Locally-generated MC packets have so far not been subject to MC routing.
Instead an MC-enabled installation would maintain the MC routing tables,
and separately from that the list of interfaces to send packets to as part
of the VXLAN FDB and MDB.
In a previous patch, a ip_mr_output() and ip6_mr_output() routines were
added for IPv4 and IPv6. All locally generated MC traffic is now passed
through these functions. For reasons of backward compatibility, an SKB
(IPCB / IP6CB) flag guards the actual MC routing.
This patch adds logic to set the flag, and the UAPI to enable the behavior.
Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Nikolay Aleksandrov <razor@blackwall.org>
Link: https://patch.msgid.link/d899655bb7e9b2521ee8c793e67056b9fd02ba12.1750113335.git.petrm@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Add enum dpll_feature_state for control over features.
Add dpll device level attribute:
DPLL_A_PHASE_OFFSET_MONITOR - to allow control over a phase offset monitor
feature. Attribute is present and shall return current state of a feature
(enum dpll_feature_state), if the device driver provides such capability,
otherwie attribute shall not be present.
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Reviewed-by: Milena Olech <milena.olech@intel.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Arkadiusz Kubalewski <arkadiusz.kubalewski@intel.com>
Acked-by: Vadim Fedorenko <vadim.fedorenko@linux.dev>
Link: https://patch.msgid.link/20250612152835.1703397-2-arkadiusz.kubalewski@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
A decade ago commit 6d08acd2d3 ("in6: fix conflict with glibc")
hid the definitions of IPV6 options, because GCC was complaining
about duplicates. The commit did not list the warnings seen, but
trying to recreate them now I think they are (building iproute2):
In file included from ./include/uapi/rdma/rdma_user_cm.h:39,
from rdma.h:16,
from res.h:9,
from res-ctx.c:7:
../include/uapi/linux/in6.h:171:9: warning: ‘IPV6_ADD_MEMBERSHIP’ redefined
171 | #define IPV6_ADD_MEMBERSHIP 20
| ^~~~~~~~~~~~~~~~~~~
In file included from /usr/include/netinet/in.h:37,
from rdma.h:13:
/usr/include/bits/in.h:233:10: note: this is the location of the previous definition
233 | # define IPV6_ADD_MEMBERSHIP IPV6_JOIN_GROUP
| ^~~~~~~~~~~~~~~~~~~
../include/uapi/linux/in6.h:172:9: warning: ‘IPV6_DROP_MEMBERSHIP’ redefined
172 | #define IPV6_DROP_MEMBERSHIP 21
| ^~~~~~~~~~~~~~~~~~~~
/usr/include/bits/in.h:234:10: note: this is the location of the previous definition
234 | # define IPV6_DROP_MEMBERSHIP IPV6_LEAVE_GROUP
| ^~~~~~~~~~~~~~~~~~~~
Compilers don't complain about redefinition if the defines
are identical, but here we have the kernel using the literal
value, and glibc using an indirection (defining to a name
of another define, with the same numerical value).
Problem is, the commit in question hid all the IPV6 socket
options, and glibc has a pretty sparse list. For instance
it lacks Flow Label related options. Willem called this out
in commit 3fb321fde2 ("selftests/net: ipv6 flowlabel"):
/* uapi/glibc weirdness may leave this undefined */
#ifndef IPV6_FLOWINFO
#define IPV6_FLOWINFO 11
#endif
More interestingly some applications (socat) use
a #ifdef IPV6_FLOWINFO to gate compilation of thier
rudimentary flow label support. (For added confusion
socat misspells it as IPV4_FLOWINFO in some places.)
Hide only the two defines we know glibc has a problem
with. If we discover more warnings we can hide more
but we should avoid covering the entire block of
defines for "IPV6 socket options".
Link: https://patch.msgid.link/20250609143933.1654417-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'block-6.16-20250606' of git://git.kernel.dk/linux
Pull more block updates from Jens Axboe:
- NVMe pull request via Christoph:
- TCP error handling fix (Shin'ichiro Kawasaki)
- TCP I/O stall handling fixes (Hannes Reinecke)
- fix command limits status code (Keith Busch)
- support vectored buffers also for passthrough (Pavel Begunkov)
- spelling fixes (Yi Zhang)
- MD pull request via Yu:
- fix REQ_RAHEAD and REQ_NOWAIT IO err handling for raid1/10
- fix max_write_behind setting for dm-raid
- some minor cleanups
- Integrity data direction fix and cleanup
- bcache NULL pointer fix
- Fix for loop missing write start/end handling
- Decouple hardware queues and IO threads in ublk
- Slew of ublk selftests additions and updates
* tag 'block-6.16-20250606' of git://git.kernel.dk/linux: (29 commits)
nvme: spelling fixes
nvme-tcp: fix I/O stalls on congested sockets
nvme-tcp: sanitize request list handling
nvme-tcp: remove tag set when second admin queue config fails
nvme: enable vectored registered bufs for passthrough cmds
nvme: fix implicit bool to flags conversion
nvme: fix command limits status code
selftests: ublk: kublk: improve behavior on init failure
block: flip iter directions in blk_rq_integrity_map_user()
block: drop direction param from bio_integrity_copy_user()
selftests: ublk: cover PER_IO_DAEMON in more stress tests
Documentation: ublk: document UBLK_F_PER_IO_DAEMON
selftests: ublk: add stress test for per io daemons
selftests: ublk: add functional test for per io daemons
selftests: ublk: kublk: decouple ublk_queues from ublk server threads
selftests: ublk: kublk: move per-thread data out of ublk_queue
selftests: ublk: kublk: lift queue initialization out of thread
selftests: ublk: kublk: tie sqe allocation to io instead of queue
selftests: ublk: kublk: plumb q_id in io_uring user_data
ublk: have a per-io daemon instead of a per-queue daemon
...
Here is the big set of USB and Thunderbolt changes for 6.16-rc1.
Included in here are the following:
- USB offload support for audio devices. I think this takes the
record for the most number of patch series (30+) over the longest
period of time (2+ years) to get merged properly. Many props go to
Wesley Cheng for seeing this effort through, they took a major
out-of-tree hacked-up-monstrosity that was created by multiple
vendors for their specific devices, got it all merged into a
semi-coherent set of changes, and got all of the different major
subsystems to agree on how this should be implemented both with
changes to their code as well as userspace apis, AND wrangled the
hardware companies into agreeing to go forward with this, despite
making them all redo work they had already done in their private
device trees. This feature offers major power savings on embedded
devices where a USB audio stream can continue to flow while the rest
of the system is sleeping, something that devices running on battery
power really care about. There are still some more small tweaks
left to be done here, and those patches are still out for review and
arguing among the different hardware companies, but this is a major
step forward and a great example of how to do upstream development
well.
- small number of thunderbolt fixes and updates, things seem to be
slowing down here (famous last words...)
- xhci refactors and reworking to try to handle some rough corner
cases in some hardware implementations where things don't always
work properly
- typec driver updates
- USB3 power management reworking and updates
- Removal of some old and orphaned UDC gadget drivers that had not
been used in a very long time, dropping over 11 thousand lines from
the tree, always a nice thing, making up for the 12k lines added for
the USB offload feature.
- lots of little updates and fixes in different drivers
All of these have been in linux-next for over 2 weeks, the USB offload
logic has been in there for 8 weeks now, with no reported issues
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-6.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB / Thunderbolt updates from Greg KH:
"Here is the big set of USB and Thunderbolt changes for 6.16-rc1.
Included in here are the following:
- USB offload support for audio devices.
I think this takes the record for the most number of patch series
(30+) over the longest period of time (2+ years) to get merged
properly.
Many props go to Wesley Cheng for seeing this effort through, they
took a major out-of-tree hacked-up-monstrosity that was created by
multiple vendors for their specific devices, got it all merged into
a semi-coherent set of changes, and got all of the different major
subsystems to agree on how this should be implemented both with
changes to their code as well as userspace apis, AND wrangled the
hardware companies into agreeing to go forward with this, despite
making them all redo work they had already done in their private
device trees.
This feature offers major power savings on embedded devices where a
USB audio stream can continue to flow while the rest of the system
is sleeping, something that devices running on battery power really
care about. There are still some more small tweaks left to be done
here, and those patches are still out for review and arguing among
the different hardware companies, but this is a major step forward
and a great example of how to do upstream development well.
- small number of thunderbolt fixes and updates, things seem to be
slowing down here (famous last words...)
- xhci refactors and reworking to try to handle some rough corner
cases in some hardware implementations where things don't always
work properly
- typec driver updates
- USB3 power management reworking and updates
- Removal of some old and orphaned UDC gadget drivers that had not
been used in a very long time, dropping over 11 thousand lines from
the tree, always a nice thing, making up for the 12k lines added
for the USB offload feature.
- lots of little updates and fixes in different drivers
All of these have been in linux-next for over 2 weeks, the USB offload
logic has been in there for 8 weeks now, with no reported issues"
* tag 'usb-6.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (172 commits)
ALSA: usb-audio: qcom: fix USB_XHCI dependency
ASoC: qdsp6: fix compile-testing without CONFIG_OF
usb: misc: onboard_usb_dev: fix build warning for CONFIG_USB_ONBOARD_DEV_USB5744=n
usb: typec: tipd: fix typo in TPS_STATUS_HIGH_VOLAGE_WARNING macro
USB: typec: fix const issue in typec_match()
USB: gadget: udc: fix const issue in gadget_match_driver()
USB: gadget: fix up const issue with struct usb_function_instance
USB: serial: pl2303: add new chip PL2303GC-Q20 and PL2303GT-2AB
USB: serial: bus: fix const issue in usb_serial_device_match()
usb: usbtmc: Fix timeout value in get_stb
usb: usbtmc: Fix read_stb function and get_stb ioctl
ALSA: qc_audio_offload: try to reduce address space confusion
ALSA: qc_audio_offload: avoid leaking xfer_buf allocation
ALSA: qc_audio_offload: rename dma/iova/va/cpu/phys variables
ALSA: usb-audio: qcom: Fix an error handling path in qc_usb_audio_probe()
usb: misc: onboard_usb_dev: Fix usb5744 initialization sequence
dt-bindings: usb: ti,usb8041: Add binding for TI USB8044 hub controller
usb: misc: onboard_usb_dev: Add support for TI TUSB8044 hub
usb: gadget: lpc32xx_udc: Use USB API functions rather than constants
usb: gadget: epautoconf: Use USB API functions rather than constants
...
Here is the big set of tty and serial driver changes for 6.16-rc1.
A little more churn than normal in this portion of the kernel for this
development cycle, Jiri and Nicholas were busy with cleanups and reviews
and fixes for the vt unicode handling logic which composed most of the
overall work in here.
Major changes are:
- vt unicode changes/reverts/changes from Nicholas. This should help
out a lot with screen readers and others that rely on vt console
support
- lock guard additions to the core tty/serial code to clean up lots of
error handling logic
- 8250 driver updates and fixes
- device tree conversions to yaml
- sh-sci driver updates
- other small cleanups and updates for serial drivers and tty core
portions
All of these have been in linux-next for 2 weeks with no reported issues
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-6.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty/serial updates from Greg KH:
"Here is the big set of tty and serial driver changes for 6.16-rc1.
A little more churn than normal in this portion of the kernel for this
development cycle, Jiri and Nicholas were busy with cleanups and
reviews and fixes for the vt unicode handling logic which composed
most of the overall work in here.
Major changes are:
- vt unicode changes/reverts/changes from Nicholas. This should help
out a lot with screen readers and others that rely on vt console
support
- lock guard additions to the core tty/serial code to clean up lots
of error handling logic
- 8250 driver updates and fixes
- device tree conversions to yaml
- sh-sci driver updates
- other small cleanups and updates for serial drivers and tty core
portions
All of these have been in linux-next for 2 weeks with no reported issues"
* tag 'tty-6.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (105 commits)
tty: serial: 8250_omap: fix TX with DMA for am33xx
vt: add VT_GETCONSIZECSRPOS to retrieve console size and cursor position
vt: bracketed paste support
vt: remove VT_RESIZE and VT_RESIZEX from vt_compat_ioctl()
vt: process the full-width ASCII fallback range programmatically
vt: make use of ucs_get_fallback() when glyph is unavailable
vt: add ucs_get_fallback()
vt: create ucs_fallback_table.h_shipped with gen_ucs_fallback_table.py
vt: introduce gen_ucs_fallback_table.py to create ucs_fallback_table.h
vt: move glyph determination to a separate function
vt: make sure displayed double-width characters are remembered as such
vt: ucs.c: fix misappropriate in_range() usage
serial: max3100: Replace open-coded parity calculation with parity8()
dt-bindings: serial: 8250_omap: Drop redundant properties
dt-bindings: serial: Convert socionext,milbeaut-usio-uart to DT schema
dt-bindings: serial: Convert microchip,pic32mzda-uart to DT schema
dt-bindings: serial: Convert arm,sbsa-uart to DT schema
dt-bindings: serial: Convert snps,arc-uart to DT schema
dt-bindings: serial: Convert marvell,armada-3700-uart to DT schema
dt-bindings: serial: Convert lantiq,asc to DT schema
...
Current release - regressions:
- Revert "kunit: configs: Enable CONFIG_INIT_STACK_ALL_PATTERN
in all_tests", makes kunit error out if compiler is old
- wifi: iwlwifi: mvm: fix assert on suspend
- rxrpc: fix return from none_validate_challenge()
Current release - new code bugs:
- ovpn: couple of fixes for socket cleanup and UDP-tunnel teardown
- can: kvaser_pciefd: refine error prone echo_skb_max handling logic
- fix net_devmem_bind_dmabuf() stub when DEVMEM not compiled
- eth: airoha: fixes for config / accel in bridge mode
Previous releases - regressions:
- Bluetooth: hci_qca: move the SoC type check to the right place,
fix GPIO integration
- prevent a NULL deref in rtnl_create_link() after locking changes
- fix udp gso skb_segment after pull from frag_list
- hv_netvsc: fix potential deadlock in netvsc_vf_setxdp()
Previous releases - always broken:
- netfilter:
- nf_nat: also check reverse tuple to obtain clashing entry
- nf_set_pipapo_avx2: fix initial map fill (zeroing)
- fix the helper for incremental update of packet checksums after
modifying the IP address, used by ILA and BPF
- eth: stmmac: prevent div by 0 when clock rate is misconfigured
- eth: ice: fix Tx scheduler handling of XDP and changing queue count
- eth: b53: fix support for the RGMII interface when delays configured
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-6.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"Including fixes from CAN, wireless, Bluetooth, and Netfilter.
Current release - regressions:
- Revert "kunit: configs: Enable CONFIG_INIT_STACK_ALL_PATTERN in
all_tests", makes kunit error out if compiler is old
- wifi: iwlwifi: mvm: fix assert on suspend
- rxrpc: fix return from none_validate_challenge()
Current release - new code bugs:
- ovpn: couple of fixes for socket cleanup and UDP-tunnel teardown
- can: kvaser_pciefd: refine error prone echo_skb_max handling logic
- fix net_devmem_bind_dmabuf() stub when DEVMEM not compiled
- eth: airoha: fixes for config / accel in bridge mode
Previous releases - regressions:
- Bluetooth: hci_qca: move the SoC type check to the right place, fix
GPIO integration
- prevent a NULL deref in rtnl_create_link() after locking changes
- fix udp gso skb_segment after pull from frag_list
- hv_netvsc: fix potential deadlock in netvsc_vf_setxdp()
Previous releases - always broken:
- netfilter:
- nf_nat: also check reverse tuple to obtain clashing entry
- nf_set_pipapo_avx2: fix initial map fill (zeroing)
- fix the helper for incremental update of packet checksums after
modifying the IP address, used by ILA and BPF
- eth:
- stmmac: prevent div by 0 when clock rate is misconfigured
- ice: fix Tx scheduler handling of XDP and changing queue count
- eth: fix support for the RGMII interface when delays configured"
* tag 'net-6.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (76 commits)
calipso: unlock rcu before returning -EAFNOSUPPORT
seg6: Fix validation of nexthop addresses
net: prevent a NULL deref in rtnl_create_link()
net: annotate data-races around cleanup_net_task
selftests: drv-net: tso: make bkg() wait for socat to quit
selftests: drv-net: tso: fix the GRE device name
selftests: drv-net: add configs for the TSO test
wireguard: device: enable threaded NAPI
netlink: specs: rt-link: decode ip6gre
netlink: specs: rt-link: add missing byte-order properties
net: wwan: mhi_wwan_mbim: use correct mux_id for multiplexing
wifi: cfg80211/mac80211: correctly parse S1G beacon optional elements
net: dsa: b53: do not touch DLL_IQQD on bcm53115
net: dsa: b53: allow RGMII for bcm63xx RGMII ports
net: dsa: b53: do not configure bcm63xx's IMP port interface
net: dsa: b53: do not enable RGMII delay on bcm63xx
net: dsa: b53: do not enable EEE on bcm63xx
net: ti: icssg-prueth: Fix swapped TX stats for MII interfaces.
selftests: netfilter: nft_nat.sh: add test for reverse clash with nat
netfilter: nf_nat: also check reverse tuple to obtain clashing entry
...
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Merge tag 'pci-v6.16-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci
Pull pci updates from Bjorn Helgaas:
"Enumeration:
- Print the actual delay time in pci_bridge_wait_for_secondary_bus()
instead of assuming it was 1000ms (Wilfred Mallawa)
- Revert 'iommu/amd: Prevent binding other PCI drivers to IOMMU PCI
devices', which broke resume from system sleep on AMD platforms and
has been fixed by other commits (Lukas Wunner)
Resource management:
- Remove mtip32xx use of pcim_iounmap_regions(), which is deprecated
and unnecessary (Philipp Stanner)
- Remove pcim_iounmap_regions() and pcim_request_region_exclusive()
and related flags since all uses have been removed (Philipp
Stanner)
- Rework devres 'request' functions so they are no longer 'hybrid',
i.e., their behavior no longer depends on whether
pcim_enable_device or pci_enable_device() was used, and remove
related code (Philipp Stanner)
- Warn (not BUG()) about failure to assign optional resources (Ilpo
Järvinen)
Error handling:
- Log the DPC Error Source ID only when it's actually valid (when
ERR_FATAL or ERR_NONFATAL was received from a downstream device)
and decode into bus/device/function (Bjorn Helgaas)
- Determine AER log level once and save it so all related messages
use the same level (Karolina Stolarek)
- Use KERN_WARNING, not KERN_ERR, when logging PCIe Correctable
Errors (Karolina Stolarek)
- Ratelimit PCIe Correctable and Non-Fatal error logging, with sysfs
controls on interval and burst count, to avoid flooding logs and
RCU stall warnings (Jon Pan-Doh)
Power management:
- Increment PM usage counter when probing reset methods so we don't
try to read config space of a powered-off device (Alex Williamson)
- Set all devices to D0 during enumeration to ensure ACPI opregion is
connected via _REG (Mario Limonciello)
Power control:
- Rename pwrctrl Kconfig symbols from 'PWRCTL' to 'PWRCTRL' to match
the filename paths. Retain old deprecated symbols for
compatibility, except for the pwrctrl slot driver
(PCI_PWRCTRL_SLOT) (Johan Hovold)
- When unregistering pwrctrl, cancel outstanding rescan work before
cleaning up data structures to avoid use-after-free issues (Brian
Norris)
Bandwidth control:
- Simplify link bandwidth controller by replacing the count of Link
Bandwidth Management Status (LBMS) events with a PCI_LINK_LBMS_SEEN
flag (Ilpo Järvinen)
- Update the Link Speed after retraining, since the Link Speed may
have changed (Ilpo Järvinen)
PCIe native device hotplug:
- Ignore Presence Detect Changed caused by DPC.
pciehp already ignores Link Down/Up events caused by DPC, but on
slots using in-band presence detect, DPC causes a spurious Presence
Detect Changed event (Lukas Wunner)
- Ignore Link Down/Up caused by Secondary Bus Reset.
On hotplug ports using in-band presence detect, the reset causes a
Presence Detect Changed event, which mistakenly caused teardown and
re-enumeration of the device. Drivers may need to annotate code
that resets their device (Lukas Wunner)
Virtualization:
- Add an ACS quirk for Loongson Root Ports that don't advertise ACS
but don't allow peer-to-peer transactions between Root Ports; the
quirk allows each Root Port to be in a separate IOMMU group (Huacai
Chen)
Endpoint framework:
- For fixed-size BARs, retain both the actual size and the possibly
larger size allocated to accommodate iATU alignment requirements
(Jerome Brunet)
- Simplify ctrl/SPAD space allocation and avoid allocating more space
than needed (Jerome Brunet)
- Correct MSI-X PBA offset calculations for DesignWare and Cadence
endpoint controllers (Niklas Cassel)
- Align the return value (number of interrupts) encoding for
pci_epc_get_msi()/pci_epc_ops::get_msi() and
pci_epc_get_msix()/pci_epc_ops::get_msix() (Niklas Cassel)
- Align the nr_irqs parameter encoding for
pci_epc_set_msi()/pci_epc_ops::set_msi() and
pci_epc_set_msix()/pci_epc_ops::set_msix() (Niklas Cassel)
Common host controller library:
- Convert pci-host-common to a library so platforms that don't need
native host controller drivers don't need to include these helper
functions (Manivannan Sadhasivam)
Apple PCIe controller driver:
- Extract ECAM bridge creation helper from pci_host_common_probe() to
separate driver-specific things like MSI from PCI things (Marc
Zyngier)
- Dynamically allocate RID-to_SID bitmap to prepare for SoCs with
varying capabilities (Marc Zyngier)
- Skip ports disabled in DT when setting up ports (Janne Grunau)
- Add t6020 compatible string (Alyssa Rosenzweig)
- Add T602x PCIe support (Hector Martin)
- Directly set/clear INTx mask bits because T602x dropped the
accessors that could do this without locking (Marc Zyngier)
- Move port PHY registers to their own reg items to accommodate
T602x, which moves them around; retain default offsets for existing
DTs that lack phy%d entries with the reg offsets (Hector Martin)
- Stop polling for core refclk, which doesn't work on T602x and the
bootloader has already done anyway (Hector Martin)
- Use gpiod_set_value_cansleep() when asserting PERST# in probe
because we're allowed to sleep there (Hector Martin)
Cadence PCIe controller driver:
- Drop a runtime PM 'put' to resolve a runtime atomic count underflow
(Hans Zhang)
- Make the cadence core buildable as a module (Kishon Vijay Abraham I)
- Add cdns_pcie_host_disable() and cdns_pcie_ep_disable() for use by
loadable drivers when they are removed (Siddharth Vadapalli)
Freescale i.MX6 PCIe controller driver:
- Apply link training workaround only on IMX6Q, IMX6SX, IMX6SP
(Richard Zhu)
- Remove redundant dw_pcie_wait_for_link() from
imx_pcie_start_link(); since the DWC core does this, imx6 only
needs it when retraining for a faster link speed (Richard Zhu)
- Toggle i.MX95 core reset to align with PHY powerup (Richard Zhu)
- Set SYS_AUX_PWR_DET to work around i.MX95 ERR051624 erratum: in
some cases, the controller can't exit 'L23 Ready' through Beacon or
PERST# deassertion (Richard Zhu)
- Clear GEN3_ZRXDC_NONCOMPL to work around i.MX95 ERR051586 erratum:
controller can't meet 2.5 GT/s ZRX-DC timing when operating at 8
GT/s, causing timeouts in L1 (Richard Zhu)
- Wait for i.MX95 PLL lock before enabling controller (Richard Zhu)
- Save/restore i.MX95 LUT for suspend/resume (Richard Zhu)
Mobiveil PCIe controller driver:
- Return bool (not int) for link-up check in
mobiveil_pab_ops.link_up() and layerscape-gen4, mobiveil (Hans
Zhang)
NVIDIA Tegra194 PCIe controller driver:
- Create debugfs directory for 'aspm_state_cnt' only when
CONFIG_PCIEASPM is enabled, since there are no other entries (Hans
Zhang)
Qualcomm PCIe controller driver:
- Add OF support for parsing DT 'eq-presets-<N>gts' property for lane
equalization presets (Krishna Chaitanya Chundru)
- Read Maximum Link Width from the Link Capabilities register if DT
lacks 'num-lanes' property (Krishna Chaitanya Chundru)
- Add Physical Layer 64 GT/s Capability ID and register offsets for
8, 32, and 64 GT/s lane equalization registers (Krishna Chaitanya
Chundru)
- Add generic dwc support for configuring lane equalization presets
(Krishna Chaitanya Chundru)
- Add DT and driver support for PCIe on IPQ5018 SoC (Nitheesh Sekar)
Renesas R-Car PCIe controller driver:
- Describe endpoint BAR 4 as being fixed size (Jerome Brunet)
- Document how to obtain R-Car V4H (r8a779g0) controller firmware
(Yoshihiro Shimoda)
Rockchip PCIe controller driver:
- Reorder rockchip_pci_core_rsts because
reset_control_bulk_deassert() deasserts in reverse order, to fix a
link training regression (Jensen Huang)
- Mark RK3399 as being capable of raising INTx interrupts (Niklas
Cassel)
Rockchip DesignWare PCIe controller driver:
- Check only PCIE_LINKUP, not LTSSM status, to determine whether the
link is up (Shawn Lin)
- Increase N_FTS (used in L0s->L0 transitions) and enable ASPM L0s
for Root Complex and Endpoint modes (Shawn Lin)
- Hide the broken ATS Capability in rockchip_pcie_ep_init() instead
of rockchip_pcie_ep_pre_init() so it stays hidden after PERST#
resets non-sticky registers (Shawn Lin)
- Call phy_power_off() before phy_exit() in rockchip_pcie_phy_deinit()
(Diederik de Haas)
Synopsys DesignWare PCIe controller driver:
- Set PORT_LOGIC_LINK_WIDTH to one lane to make initial link training
more robust; this will not affect the intended link width if all
lanes are functional (Wenbin Yao)
- Return bool (not int) for link-up check in dw_pcie_ops.link_up()
and armada8k, dra7xx, dw-rockchip, exynos, histb, keembay,
keystone, kirin, meson, qcom, qcom-ep, rcar_gen4, spear13xx,
tegra194, uniphier, visconti (Hans Zhang)
- Add debugfs support for exposing DWC device-specific PTM context
(Manivannan Sadhasivam)
TI J721E PCIe driver:
- Make j721e buildable as a loadable and removable module (Siddharth
Vadapalli)
- Fix j721e host/endpoint dependencies that result in link failures
in some configs (Arnd Bergmann)
Device tree bindings:
- Add qcom DT binding for 'global' interrupt (PCIe controller and
link-specific events) for ipq8074, ipq8074-gen3, ipq6018, sa8775p,
sc7280, sc8180x sdm845, sm8150, sm8250, sm8350 (Manivannan
Sadhasivam)
- Add qcom DT binding for 8 MSI SPI interrupts for msm8998, ipq8074,
ipq8074-gen3, ipq6018 (Manivannan Sadhasivam)
- Add dw rockchip DT binding for rk3576 and rk3562 (Kever Yang)
- Correct indentation and style of examples in brcm,stb-pcie,
cdns,cdns-pcie-ep, intel,keembay-pcie-ep, intel,keembay-pcie,
microchip,pcie-host, rcar-pci-ep, rcar-pci-host, xilinx-versal-cpm
(Krzysztof Kozlowski)
- Convert Marvell EBU (dove, kirkwood, armada-370, armada-xp) and
armada8k from text to schema DT bindings (Rob Herring)
- Remove obsolete .txt DT bindings for content that has been moved to
schemas (Rob Herring)
- Add qcom DT binding for MHI registers in IPQ5332, IPQ6018, IPQ8074
and IPQ9574 (Varadarajan Narayanan)
- Convert v3,v360epc-pci from text to DT schema binding (Rob Herring)
- Change microchip,pcie-host DT binding to be 'dma-noncoherent' since
PolarFire may be configured that way (Conor Dooley)
Miscellaneous:
- Drop 'pci' suffix from intel_mid_pci.c filename to match similar
files (Andy Shevchenko)
- All platforms with PCI have an MMU, so add PCI Kconfig dependency
on MMU to simplify build testing and avoid inadvertent build
regressions (Arnd Bergmann)
- Update Krzysztof Wilczyński's email address in MAINTAINERS
(Krzysztof Wilczyński)
- Update Manivannan Sadhasivam's email address in MAINTAINERS
(Manivannan Sadhasivam)"
* tag 'pci-v6.16-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci: (147 commits)
MAINTAINERS: Update Manivannan Sadhasivam email address
PCI: j721e: Fix host/endpoint dependencies
PCI: j721e: Add support to build as a loadable module
PCI: cadence-ep: Introduce cdns_pcie_ep_disable() helper for cleanup
PCI: cadence-host: Introduce cdns_pcie_host_disable() helper for cleanup
PCI: cadence: Add support to build pcie-cadence library as a kernel module
MAINTAINERS: Update Krzysztof Wilczyński email address
PCI: Remove unnecessary linesplit in __pci_setup_bridge()
PCI: WARN (not BUG()) when we fail to assign optional resources
PCI: Remove unused pci_printk()
PCI: qcom: Replace PERST# sleep time with proper macro
PCI: dw-rockchip: Replace PERST# sleep time with proper macro
PCI: host-common: Convert to library for host controller drivers
PCI/ERR: Remove misleading TODO regarding kernel panic
PCI: cadence: Remove duplicate message code definitions
PCI: endpoint: Align pci_epc_set_msix(), pci_epc_ops::set_msix() nr_irqs encoding
PCI: endpoint: Align pci_epc_set_msi(), pci_epc_ops::set_msi() nr_irqs encoding
PCI: endpoint: Align pci_epc_get_msix(), pci_epc_ops::get_msix() return value encoding
PCI: endpoint: Align pci_epc_get_msi(), pci_epc_ops::get_msi() return value encoding
PCI: cadence-ep: Correct PBA offset in .set_msix() callback
...
- dm-delay: don't busy-wait in kthread
- dm: use use generic disable_* functions instead of open coding them
- dm: lock queue limits when reading them
- dm-verity: use softirq context only when !need_resched()
- dm-bufio: remove maximum age based eviction
- dm: remove unneeded kvfree from alloc_targets
- dm-flakey: various fixes
- dm-mpath: interface for explicit probing of active paths
- dm: fix BLK_FEAT_ATOMIC_WRITES
- dm: pass through operations on wrapped inline crypto keys
- dm vdo indexer: don't read request structure after enqueuing
- dm-zone: Use bdev_*() helper functions where applicable
- dm-mpath: replace spin_lock_irqsave with spin_lock_irq
- dm-mirror: fix a tiny race condition
- dm-verity: fix a memory leak if some arguments are specified multiple times
- dm-stripe: small code cleanup
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Merge tag 'for-6.16/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
Pull device mapper updates from Mikulas Patocka:
- better error handling when reloading a table
- use use generic disable_* functions instead of open coding them
- lock queue limits when reading them
- remove unneeded kvfree from alloc_targets
- fix BLK_FEAT_ATOMIC_WRITES
- pass through operations on wrapped inline crypto keys
- dm-verity:
- use softirq context only when !need_resched()
- fix a memory leak if some arguments are specified multiple times
- dm-mpath:
- interface for explicit probing of active paths
- replace spin_lock_irqsave with spin_lock_irq
- dm-delay: don't busy-wait in kthread
- dm-bufio: remove maximum age based eviction
- dm-flakey: various fixes
- vdo indexer: don't read request structure after enqueuing
- dm-zone: Use bdev_*() helper functions where applicable
- dm-mirror: fix a tiny race condition
- dm-stripe: small code cleanup
* tag 'for-6.16/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm: (29 commits)
dm-stripe: small code cleanup
dm-verity: fix a memory leak if some arguments are specified multiple times
dm-mirror: fix a tiny race condition
dm-table: check BLK_FEAT_ATOMIC_WRITES inside limits_lock
dm mpath: replace spin_lock_irqsave with spin_lock_irq
dm-mpath: Don't grab work_mutex while probing paths
dm-zone: Use bdev_*() helper functions where applicable
dm vdo indexer: don't read request structure after enqueuing
dm: pass through operations on wrapped inline crypto keys
blk-crypto: export wrapped key functions
dm-table: Set BLK_FEAT_ATOMIC_WRITES for target queue limits
dm mpath: Interface for explicit probing of active paths
dm: Allow .prepare_ioctl to handle ioctls directly
dm-flakey: make corrupting read bios work
dm-flakey: remove useless ERROR_READS check in flakey_end_io
dm-flakey: error all IOs when num_features is absent
dm-flakey: Clean up parsing messages
dm: remove unneeded kvfree from alloc_targets
dm-bufio: remove maximum age based eviction
dm-verity: use softirq context only when !need_resched()
...
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Merge tag 'fuse-update-6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse
Pull fuse updates from Miklos Szeredi:
- Remove tmp page copying in writeback path (Joanne).
This removes ~300 lines and with that a lot of complexity related to
avoiding reclaim related deadlock. The old mechanism is replaced with
a mapping flag that tells the MM not to block reclaim waiting for
writeback to complete. The MM parts have been reviewed/acked by
respective maintainers.
- Convert more code to handle large folios (Joanne). This still just
adds the code to deal with large folios and does not enable them yet.
- Allow invalidating all cached lookups atomically (Luis Henriques).
This feature is useful for CernVMFS, which currently does this
iteratively.
- Align write prefaulting in fuse with generic one (Dave Hansen)
- Fix race causing invalid data to be cached when setting attributes on
different nodes of a distributed fs (Guang Yuan Wu)
- Update documentation for passthrough (Chen Linxuan)
- Add fdinfo about the device number associated with an opened
/dev/fuse instance (Chen Linxuan)
- Increase readdir buffer size (Miklos). This depends on a patch to VFS
readdir code that was already merged through Christians tree.
- Optimize io-uring request expiration (Joanne)
- Misc cleanups
* tag 'fuse-update-6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse: (25 commits)
fuse: increase readdir buffer size
readdir: supply dir_context.count as readdir buffer size hint
fuse: don't allow signals to interrupt getdents copying
fuse: support large folios for writeback
fuse: support large folios for readahead
fuse: support large folios for queued writes
fuse: support large folios for stores
fuse: support large folios for symlinks
fuse: support large folios for folio reads
fuse: support large folios for writethrough writes
fuse: refactor fuse_fill_write_pages()
fuse: support large folios for retrieves
fuse: support copying large folios
fs: fuse: add dev id to /dev/fuse fdinfo
docs: filesystems: add fuse-passthrough.rst
MAINTAINERS: update filter of FUSE documentation
fuse: fix race between concurrent setattrs from multiple nodes
fuse: remove tmp folio for writebacks and internal rb tree
mm: skip folio reclaim in legacy memcg contexts for deadlockable mappings
fuse: optimize over-io-uring request expiration check
...
simplifies the act of creating a pte which addresses the first page in a
folio and reduces the amount of plumbing which architecture must
implement to provide this.
- The 8 patch series "Misc folio patches for 6.16" from Matthew Wilcox
is a shower of largely unrelated folio infrastructure changes which
clean things up and better prepare us for future work.
- The 3 patch series "memory,x86,acpi: hotplug memory alignment
advisement" from Gregory Price adds early-init code to prevent x86 from
leaving physical memory unused when physical address regions are not
aligned to memory block size.
- The 2 patch series "mm/compaction: allow more aggressive proactive
compaction" from Michal Clapinski provides some tuning of the (sadly,
hard-coded (more sadly, not auto-tuned)) thresholds for our invokation
of proactive compaction. In a simple test case, the reduction of a guest
VM's memory consumption was dramatic.
- The 8 patch series "Minor cleanups and improvements to swap freeing
code" from Kemeng Shi provides some code cleaups and a small efficiency
improvement to this part of our swap handling code.
- The 6 patch series "ptrace: introduce PTRACE_SET_SYSCALL_INFO API"
from Dmitry Levin adds the ability for a ptracer to modify syscalls
arguments. At this time we can alter only "system call information that
are used by strace system call tampering, namely, syscall number,
syscall arguments, and syscall return value.
This series should have been incorporated into mm.git's "non-MM"
branch, but I goofed.
- The 3 patch series "fs/proc: extend the PAGEMAP_SCAN ioctl to report
guard regions" from Andrei Vagin extends the info returned by the
PAGEMAP_SCAN ioctl against /proc/pid/pagemap. This permits CRIU to more
efficiently get at the info about guard regions.
- The 2 patch series "Fix parameter passed to page_mapcount_is_type()"
from Gavin Shan implements that fix. No runtime effect is expected
because validate_page_before_insert() happens to fix up this error.
- The 3 patch series "kernel/events/uprobes: uprobe_write_opcode()
rewrite" from David Hildenbrand basically brings uprobe text poking into
the current decade. Remove a bunch of hand-rolled implementation in
favor of using more current facilities.
- The 3 patch series "mm/ptdump: Drop assumption that pxd_val() is u64"
from Anshuman Khandual provides enhancements and generalizations to the
pte dumping code. This might be needed when 128-bit Page Table
Descriptors are enabled for ARM.
- The 12 patch series "Always call constructor for kernel page tables"
from Kevin Brodsky "ensures that the ctor/dtor is always called for
kernel pgtables, as it already is for user pgtables". This permits the
addition of more functionality such as "insert hooks to protect page
tables". This change does result in various architectures performing
unnecesary work, but this is fixed up where it is anticipated to occur.
- The 9 patch series "Rust support for mm_struct, vm_area_struct, and
mmap" from Alice Ryhl adds plumbing to permit Rust access to core MM
structures.
- The 3 patch series "fix incorrectly disallowed anonymous VMA merges"
from Lorenzo Stoakes takes advantage of some VMA merging opportunities
which we've been missing for 15 years.
- The 4 patch series "mm/madvise: batch tlb flushes for MADV_DONTNEED
and MADV_FREE" from SeongJae Park optimizes process_madvise()'s TLB
flushing. Instead of flushing each address range in the provided iovec,
we batch the flushing across all the iovec entries. The syscall's cost
was approximately halved with a microbenchmark which was designed to
load this particular operation.
- The 6 patch series "Track node vacancy to reduce worst case allocation
counts" from Sidhartha Kumar makes the maple tree smarter about its node
preallocation. stress-ng mmap performance increased by single-digit
percentages and the amount of unnecessarily preallocated memory was
dramaticelly reduced.
- The 3 patch series "mm/gup: Minor fix, cleanup and improvements" from
Baoquan He removes a few unnecessary things which Baoquan noted when
reading the code.
- The 3 patch series ""Enhance sysfs handling for memory hotplug in
weighted interleave" from Rakie Kim "enhances the weighted interleave
policy in the memory management subsystem by improving sysfs handling,
fixing memory leaks, and introducing dynamic sysfs updates for memory
hotplug support". Fixes things on error paths which we are unlikely to
hit.
- The 7 patch series "mm/damon: auto-tune DAMOS for NUMA setups
including tiered memory" from SeongJae Park introduces new DAMOS quota
goal metrics which eliminate the manual tuning which is required when
utilizing DAMON for memory tiering.
- The 5 patch series "mm/vmalloc.c: code cleanup and improvements" from
Baoquan He provides cleanups and small efficiency improvements which
Baoquan found via code inspection.
- The 2 patch series "vmscan: enforce mems_effective during demotion"
from Gregory Price "changes reclaim to respect cpuset.mems_effective
during demotion when possible". because "presently, reclaim explicitly
ignores cpuset.mems_effective when demoting, which may cause the cpuset
settings to violated." "This is useful for isolating workloads on a
multi-tenant system from certain classes of memory more consistently."
- The 2 patch series ""Clean up split_huge_pmd_locked() and remove
unnecessary folio pointers" from Gavin Guo provides minor cleanups and
efficiency gains in in the huge page splitting and migrating code.
- The 3 patch series "Use kmem_cache for memcg alloc" from Huan Yang
creates a slab cache for `struct mem_cgroup', yielding improved memory
utilization.
- The 4 patch series "add max arg to swappiness in memory.reclaim and
lru_gen" from Zhongkun He adds a new "max" argument to the "swappiness="
argument for memory.reclaim MGLRU's lru_gen. This directs proactive
reclaim to reclaim from only anon folios rather than file-backed folios.
- The 17 patch series "kexec: introduce Kexec HandOver (KHO)" from Mike
Rapoport is the first step on the path to permitting the kernel to
maintain existing VMs while replacing the host kernel via file-based
kexec. At this time only memblock's reserve_mem is preserved.
- The 7 patch series "mm: Introduce for_each_valid_pfn()" from David
Woodhouse provides and uses a smarter way of looping over a pfn range.
By skipping ranges of invalid pfns.
- The 2 patch series "sched/numa: Skip VMA scanning on memory pinned to
one NUMA node via cpuset.mems" from Libo Chen removes a lot of pointless
VMA scanning when a task is pinned a single NUMA mode. Dramatic
performance benefits were seen in some real world cases.
- The 2 patch series "JFS: Implement migrate_folio for
jfs_metapage_aops" from Shivank Garg addresses a warning which occurs
during memory compaction when using JFS.
- The 4 patch series "move all VMA allocation, freeing and duplication
logic to mm" from Lorenzo Stoakes moves some VMA code from kernel/fork.c
into the more appropriate mm/vma.c.
- The 6 patch series "mm, swap: clean up swap cache mapping helper" from
Kairui Song provides code consolidation and cleanups related to the
folio_index() function.
- The 2 patch series "mm/gup: Cleanup memfd_pin_folios()" from Vishal
Moola does that.
- The 8 patch series "memcg: Fix test_memcg_min/low test failures" from
Waiman Long addresses some bogus failures which are being reported by
the test_memcontrol selftest.
- The 3 patch series "eliminate mmap() retry merge, add .mmap_prepare
hook" from Lorenzo Stoakes commences the deprecation of
file_operations.mmap() in favor of the new
file_operations.mmap_prepare(). The latter is more restrictive and
prevents drivers from messing with things in ways which, amongst other
problems, may defeat VMA merging.
- The 4 patch series "memcg: decouple memcg and objcg stocks"" from
Shakeel Butt decouples the per-cpu memcg charge cache from the objcg's
one. This is a step along the way to making memcg and objcg charging
NMI-safe, which is a BPF requirement.
- The 6 patch series "mm/damon: minor fixups and improvements for code,
tests, and documents" from SeongJae Park is "yet another batch of
miscellaneous DAMON changes. Fix and improve minor problems in code,
tests and documents."
- The 7 patch series "memcg: make memcg stats irq safe" from Shakeel
Butt converts memcg stats to be irq safe. Another step along the way to
making memcg charging and stats updates NMI-safe, a BPF requirement.
- The 4 patch series "Let unmap_hugepage_range() and several related
functions take folio instead of page" from Fan Ni provides folio
conversions in the hugetlb code.
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Merge tag 'mm-stable-2025-05-31-14-50' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull MM updates from Andrew Morton:
- "Add folio_mk_pte()" from Matthew Wilcox simplifies the act of
creating a pte which addresses the first page in a folio and reduces
the amount of plumbing which architecture must implement to provide
this.
- "Misc folio patches for 6.16" from Matthew Wilcox is a shower of
largely unrelated folio infrastructure changes which clean things up
and better prepare us for future work.
- "memory,x86,acpi: hotplug memory alignment advisement" from Gregory
Price adds early-init code to prevent x86 from leaving physical
memory unused when physical address regions are not aligned to memory
block size.
- "mm/compaction: allow more aggressive proactive compaction" from
Michal Clapinski provides some tuning of the (sadly, hard-coded (more
sadly, not auto-tuned)) thresholds for our invokation of proactive
compaction. In a simple test case, the reduction of a guest VM's
memory consumption was dramatic.
- "Minor cleanups and improvements to swap freeing code" from Kemeng
Shi provides some code cleaups and a small efficiency improvement to
this part of our swap handling code.
- "ptrace: introduce PTRACE_SET_SYSCALL_INFO API" from Dmitry Levin
adds the ability for a ptracer to modify syscalls arguments. At this
time we can alter only "system call information that are used by
strace system call tampering, namely, syscall number, syscall
arguments, and syscall return value.
This series should have been incorporated into mm.git's "non-MM"
branch, but I goofed.
- "fs/proc: extend the PAGEMAP_SCAN ioctl to report guard regions" from
Andrei Vagin extends the info returned by the PAGEMAP_SCAN ioctl
against /proc/pid/pagemap. This permits CRIU to more efficiently get
at the info about guard regions.
- "Fix parameter passed to page_mapcount_is_type()" from Gavin Shan
implements that fix. No runtime effect is expected because
validate_page_before_insert() happens to fix up this error.
- "kernel/events/uprobes: uprobe_write_opcode() rewrite" from David
Hildenbrand basically brings uprobe text poking into the current
decade. Remove a bunch of hand-rolled implementation in favor of
using more current facilities.
- "mm/ptdump: Drop assumption that pxd_val() is u64" from Anshuman
Khandual provides enhancements and generalizations to the pte dumping
code. This might be needed when 128-bit Page Table Descriptors are
enabled for ARM.
- "Always call constructor for kernel page tables" from Kevin Brodsky
ensures that the ctor/dtor is always called for kernel pgtables, as
it already is for user pgtables.
This permits the addition of more functionality such as "insert hooks
to protect page tables". This change does result in various
architectures performing unnecesary work, but this is fixed up where
it is anticipated to occur.
- "Rust support for mm_struct, vm_area_struct, and mmap" from Alice
Ryhl adds plumbing to permit Rust access to core MM structures.
- "fix incorrectly disallowed anonymous VMA merges" from Lorenzo
Stoakes takes advantage of some VMA merging opportunities which we've
been missing for 15 years.
- "mm/madvise: batch tlb flushes for MADV_DONTNEED and MADV_FREE" from
SeongJae Park optimizes process_madvise()'s TLB flushing.
Instead of flushing each address range in the provided iovec, we
batch the flushing across all the iovec entries. The syscall's cost
was approximately halved with a microbenchmark which was designed to
load this particular operation.
- "Track node vacancy to reduce worst case allocation counts" from
Sidhartha Kumar makes the maple tree smarter about its node
preallocation.
stress-ng mmap performance increased by single-digit percentages and
the amount of unnecessarily preallocated memory was dramaticelly
reduced.
- "mm/gup: Minor fix, cleanup and improvements" from Baoquan He removes
a few unnecessary things which Baoquan noted when reading the code.
- ""Enhance sysfs handling for memory hotplug in weighted interleave"
from Rakie Kim "enhances the weighted interleave policy in the memory
management subsystem by improving sysfs handling, fixing memory
leaks, and introducing dynamic sysfs updates for memory hotplug
support". Fixes things on error paths which we are unlikely to hit.
- "mm/damon: auto-tune DAMOS for NUMA setups including tiered memory"
from SeongJae Park introduces new DAMOS quota goal metrics which
eliminate the manual tuning which is required when utilizing DAMON
for memory tiering.
- "mm/vmalloc.c: code cleanup and improvements" from Baoquan He
provides cleanups and small efficiency improvements which Baoquan
found via code inspection.
- "vmscan: enforce mems_effective during demotion" from Gregory Price
changes reclaim to respect cpuset.mems_effective during demotion when
possible. because presently, reclaim explicitly ignores
cpuset.mems_effective when demoting, which may cause the cpuset
settings to violated.
This is useful for isolating workloads on a multi-tenant system from
certain classes of memory more consistently.
- "Clean up split_huge_pmd_locked() and remove unnecessary folio
pointers" from Gavin Guo provides minor cleanups and efficiency gains
in in the huge page splitting and migrating code.
- "Use kmem_cache for memcg alloc" from Huan Yang creates a slab cache
for `struct mem_cgroup', yielding improved memory utilization.
- "add max arg to swappiness in memory.reclaim and lru_gen" from
Zhongkun He adds a new "max" argument to the "swappiness=" argument
for memory.reclaim MGLRU's lru_gen.
This directs proactive reclaim to reclaim from only anon folios
rather than file-backed folios.
- "kexec: introduce Kexec HandOver (KHO)" from Mike Rapoport is the
first step on the path to permitting the kernel to maintain existing
VMs while replacing the host kernel via file-based kexec. At this
time only memblock's reserve_mem is preserved.
- "mm: Introduce for_each_valid_pfn()" from David Woodhouse provides
and uses a smarter way of looping over a pfn range. By skipping
ranges of invalid pfns.
- "sched/numa: Skip VMA scanning on memory pinned to one NUMA node via
cpuset.mems" from Libo Chen removes a lot of pointless VMA scanning
when a task is pinned a single NUMA mode.
Dramatic performance benefits were seen in some real world cases.
- "JFS: Implement migrate_folio for jfs_metapage_aops" from Shivank
Garg addresses a warning which occurs during memory compaction when
using JFS.
- "move all VMA allocation, freeing and duplication logic to mm" from
Lorenzo Stoakes moves some VMA code from kernel/fork.c into the more
appropriate mm/vma.c.
- "mm, swap: clean up swap cache mapping helper" from Kairui Song
provides code consolidation and cleanups related to the folio_index()
function.
- "mm/gup: Cleanup memfd_pin_folios()" from Vishal Moola does that.
- "memcg: Fix test_memcg_min/low test failures" from Waiman Long
addresses some bogus failures which are being reported by the
test_memcontrol selftest.
- "eliminate mmap() retry merge, add .mmap_prepare hook" from Lorenzo
Stoakes commences the deprecation of file_operations.mmap() in favor
of the new file_operations.mmap_prepare().
The latter is more restrictive and prevents drivers from messing with
things in ways which, amongst other problems, may defeat VMA merging.
- "memcg: decouple memcg and objcg stocks"" from Shakeel Butt decouples
the per-cpu memcg charge cache from the objcg's one.
This is a step along the way to making memcg and objcg charging
NMI-safe, which is a BPF requirement.
- "mm/damon: minor fixups and improvements for code, tests, and
documents" from SeongJae Park is yet another batch of miscellaneous
DAMON changes. Fix and improve minor problems in code, tests and
documents.
- "memcg: make memcg stats irq safe" from Shakeel Butt converts memcg
stats to be irq safe. Another step along the way to making memcg
charging and stats updates NMI-safe, a BPF requirement.
- "Let unmap_hugepage_range() and several related functions take folio
instead of page" from Fan Ni provides folio conversions in the
hugetlb code.
* tag 'mm-stable-2025-05-31-14-50' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (285 commits)
mm: pcp: increase pcp->free_count threshold to trigger free_high
mm/hugetlb: convert use of struct page to folio in __unmap_hugepage_range()
mm/hugetlb: refactor __unmap_hugepage_range() to take folio instead of page
mm/hugetlb: refactor unmap_hugepage_range() to take folio instead of page
mm/hugetlb: pass folio instead of page to unmap_ref_private()
memcg: objcg stock trylock without irq disabling
memcg: no stock lock for cpu hot-unplug
memcg: make __mod_memcg_lruvec_state re-entrant safe against irqs
memcg: make count_memcg_events re-entrant safe against irqs
memcg: make mod_memcg_state re-entrant safe against irqs
memcg: move preempt disable to callers of memcg_rstat_updated
memcg: memcg_rstat_updated re-entrant safe against irqs
mm: khugepaged: decouple SHMEM and file folios' collapse
selftests/eventfd: correct test name and improve messages
alloc_tag: check mem_profiling_support in alloc_tag_init
Docs/damon: update titles and brief introductions to explain DAMOS
selftests/damon/_damon_sysfs: read tried regions directories in order
mm/damon/tests/core-kunit: add a test for damos_set_filters_default_reject()
mm/damon/paddr: remove unused variable, folio_list, in damon_pa_stat()
mm/damon/sysfs-schemes: fix wrong comment on damons_sysfs_quota_goal_metric_strs
...
Currently, ublk_drv associates to each hardware queue (hctx) a unique
task (called the queue's ubq_daemon) which is allowed to issue
COMMIT_AND_FETCH commands against the hctx. If any other task attempts
to do so, the command fails immediately with EINVAL. When considered
together with the block layer architecture, the result is that for each
CPU C on the system, there is a unique ublk server thread which is
allowed to handle I/O submitted on CPU C. This can lead to suboptimal
performance under imbalanced load generation. For an extreme example,
suppose all the load is generated on CPUs mapping to a single ublk
server thread. Then that thread may be fully utilized and become the
bottleneck in the system, while other ublk server threads are totally
idle.
This issue can also be addressed directly in the ublk server without
kernel support by having threads dequeue I/Os and pass them around to
ensure even load. But this solution requires inter-thread communication
at least twice for each I/O (submission and completion), which is
generally a bad pattern for performance. The problem gets even worse
with zero copy, as more inter-thread communication would be required to
have the buffer register/unregister calls to come from the correct
thread.
Therefore, address this issue in ublk_drv by allowing each I/O to have
its own daemon task. Two I/Os in the same queue are now allowed to be
serviced by different daemon tasks - this was not possible before.
Imbalanced load can then be balanced across all ublk server threads by
having the ublk server threads issue FETCH_REQs in a round-robin manner.
As a small toy example, consider a system with a single ublk device
having 2 queues, each of depth 4. A ublk server having 4 threads could
issue its FETCH_REQs against this device as follows (where each entry is
the qid,tag pair that the FETCH_REQ targets):
ublk server thread: T0 T1 T2 T3
0,0 0,1 0,2 0,3
1,3 1,0 1,1 1,2
This setup allows for load that is concentrated on one hctx/ublk_queue
to be spread out across all ublk server threads, alleviating the issue
described above.
Add the new UBLK_F_PER_IO_DAEMON feature to ublk_drv, which ublk servers
can use to essentially test for the presence of this change and tailor
their behavior accordingly.
Signed-off-by: Uday Shankar <ushankar@purestorage.com>
Reviewed-by: Caleb Sander Mateos <csander@purestorage.com>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Jens Axboe <axboe@kernel.dk>
Link: https://lore.kernel.org/r/20250529-ublk_task_per_io-v8-1-e9d3b119336a@purestorage.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
In Cilium, we use bpf_csum_diff + bpf_l4_csum_replace to, among other
things, update the L4 checksum after reverse SNATing IPv6 packets. That
use case is however not currently supported and leads to invalid
skb->csum values in some cases. This patch adds support for IPv6 address
changes in bpf_l4_csum_update via a new flag.
When calling bpf_l4_csum_replace in Cilium, it ends up calling
inet_proto_csum_replace_by_diff:
1: void inet_proto_csum_replace_by_diff(__sum16 *sum, struct sk_buff *skb,
2: __wsum diff, bool pseudohdr)
3: {
4: if (skb->ip_summed != CHECKSUM_PARTIAL) {
5: csum_replace_by_diff(sum, diff);
6: if (skb->ip_summed == CHECKSUM_COMPLETE && pseudohdr)
7: skb->csum = ~csum_sub(diff, skb->csum);
8: } else if (pseudohdr) {
9: *sum = ~csum_fold(csum_add(diff, csum_unfold(*sum)));
10: }
11: }
The bug happens when we're in the CHECKSUM_COMPLETE state. We've just
updated one of the IPv6 addresses. The helper now updates the L4 header
checksum on line 5. Next, it updates skb->csum on line 7. It shouldn't.
For an IPv6 packet, the updates of the IPv6 address and of the L4
checksum will cancel each other. The checksums are set such that
computing a checksum over the packet including its checksum will result
in a sum of 0. So the same is true here when we update the L4 checksum
on line 5. We'll update it as to cancel the previous IPv6 address
update. Hence skb->csum should remain untouched in this case.
The same bug doesn't affect IPv4 packets because, in that case, three
fields are updated: the IPv4 address, the IP checksum, and the L4
checksum. The change to the IPv4 address and one of the checksums still
cancel each other in skb->csum, but we're left with one checksum update
and should therefore update skb->csum accordingly. That's exactly what
inet_proto_csum_replace_by_diff does.
This special case for IPv6 L4 checksums is also described atop
inet_proto_csum_replace16, the function we should be using in this case.
This patch introduces a new bpf_l4_csum_replace flag, BPF_F_IPV6,
to indicate that we're updating the L4 checksum of an IPv6 packet. When
the flag is set, inet_proto_csum_replace_by_diff will skip the
skb->csum update.
Fixes: 7d672345ed ("bpf: add generic bpf_csum_diff helper")
Signed-off-by: Paul Chaignon <paul.chaignon@gmail.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://patch.msgid.link/96a6bc3a443e6f0b21ff7b7834000e17fb549e05.1748509484.git.paul.chaignon@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Highlights:
- alienware-wmi-wmax:
- Add HWMON support
- Add ABI and admin-guide documentation
- Expose GPIO debug methods through debug FS
- Support manual fan control and "custom" thermal profile
- amd/hsmp:
- Add sysfs files to show HSMP telemetry
- Report power readings and limits via hwmon
- amd/isp4: Add AMD ISP platform config for OV05C10
- asus-wmi:
- Refactor Ally suspend/resume to work better with older FW
- hid-asus: check ROG Ally MCU version and warn about old FW versions
- dasharo-acpi: Add driver for Dasharo devices supporting fans and
temperatures monitoring
- dell-ddv:
- Expose the battery health and manufacture date to userspace using
power supply extensions
- Implement the battery matching algorithm
- dell-pc:
- Improve error propagation
- Use faux device
- int3472:
- Add delays to avoid GPIO regulator spikes
- Add handshake pin support
- Make regulator supply name configurable and allow registering more
than 1 GPIO regulator
- Map mt9m114 powerdown pin to powerenable
- intel/pmc: Add separate SSRAM Telemetry driver
- intel-uncore-freq: Add attributes to show agent types and die ID
- ISST:
- Support SST-TF revision 2 (allows more cores per bucket)
- Support SST-PP revision 2 (fabric 1 frequencies)
- Remove unnecessary SST MSRs restore (the package retains MSRs
despite CPU offlining)
- mellanox: Add support for SN2201, SN4280, SN5610, and SN5640
- mellanox: mlxbf-pmc: Support additional PMC blocks
- oxpec:
- Add OneXFly variants
- Add support for charge limit, charge thresholds, and turbo LED
- Distinguish current X1 variants to avoid unwanted matching to new
variants
- Follow hwmon conventions
- Move from hwmon/oxp-sensors to platform/x86 to match the enlarged
scope
- power: supply:
- Add inhibit-charge-awake (needed by oxpec)
- Add additional battery health status values ("blown fuse" and "cell
imbalance") (needed by dell-ddv)
- powerwell-ec: Add driver for Portwell EC supporting GPIO and watchdog
- thinkpad-acpi: Support camera shutter switch hotkey
- tuxedo: Add virtual LampArray for TUXEDO NB04 devices
- tools/power/x86/intel-speed-select:
- Support displaying SST-PP revision 2 fields
- Skip uncore frequency update on newer generations of CPUs
- Miscellaneous cleanups / refactoring / improvements
The following is an automated shortlog grouped by driver:
ABI: testing: sysfs-class-oxp:
- add missing documentation
- add tt_led attribute documentation
Add AMD ISP platform config for OV05C10:
- Add AMD ISP platform config for OV05C10
alienware-wmi-wmax:
- Add a DebugFS interface
- Add HWMON support
- Add support for manual fan control
- Add support for the "custom" thermal profile
- Expose GPIO debug methods
- Fix awcc_hwmon_fans_init() label logic
- Fix uninitialized bitmap in awcc_hwmon_fans_init()
- Improve ID processing
- Improve internal AWCC API
- Improve platform profile probe
- Modify supported_thermal_profiles[]
- Rename thermal related symbols
amd/hsmp: acpi:
- Add sysfs files to display HSMP telemetry
amd/hsmp:
- fix building with CONFIG_HWMON=m
- Report power via hwmon sensors
- Use a single DRIVER_VERSION for all hsmp modules
arm64: huawei-gaokun-ec:
- Remove unneeded semicolon
asus-wmi:
- fix build without CONFIG_SUSPEND
- Refactor Ally suspend/resume
Avoid -Wflex-array-member-not-at-end warning:
- Avoid -Wflex-array-member-not-at-end warning
barco-p50:
- use new GPIO line value setter callbacks
dell-ddv:
- Expose the battery health to userspace
- Expose the battery manufacture date to userspace
- Implement the battery matching algorithm
dell-pc:
- Propagate errors when detecting feature support
- Transition to faux device
- Use non-atomic bitmap operations
docs: ABI:
- Fix "aassociated" to "associated"
Documentation/ABI:
- Add new attribute for mlxreg-io sysfs interfaces
Documentation: ABI:
- Add sysfs platform and debugfs ABI documentation for alienware-wmi
Documentation: admin-guide: laptops:
- Add documentation for alienware-wmi
Documentation: admin-guide: pm:
- Add documentation for agent_types
- Add documentation for die_id
Documentation: wmi: alienware-wmi:
- Add GPIO control documentation
Documentation: wmi:
- Improve and update alienware-wmi documentation
Do not enable by default during compile testing:
- Do not enable by default during compile testing
hid-asus:
- check ROG Ally MCU version and warn
hwmon:
- (oxp-sensors) Add all OneXFly variants
- (oxp-sensors) Distinguish the X1 variants
int0002:
- use new GPIO line value setter callbacks
int3472:
- Add handshake pin support
- Add skl_int3472_register_clock() helper
- Avoid GPIO regulator spikes
- Debug log when remapping pins
- Drop unused gpio field from struct int3472_gpio_regulator
- Export int3472_discrete_parse_crs()
- For mt9m114 sensors map powerdown to powerenable
- Make regulator supply name configurable
- Move common.h to public includes, symbols to INTEL_INT3472
- Prepare for registering more than 1 GPIO regulator
- Remove unused sensor_config struct member
- Rework AVDD second sensor quirk handling
- Stop setting a supply-name for GPIO regulators
- Stop using devm_gpiod_get()
intel/pmc:
- Convert index variables to be unsigned
- Create Intel PMC SSRAM Telemetry driver
- Improve pmc_core_get_lpm_req()
- Move error handling to init function
- Move PMC Core related functions
- Move PMC devid to core.h
- Remove unneeded header file inclusion
- Remove unneeded io operations
- Rename core_ssram to ssram_telemetry
- Use devm for mutex_init
intel: power-domains:
- Add interface to get Linux die ID
intel-uncore-freq:
- Add attributes to show agent types
- Add attributes to show die_id
intel/vsec:
- Change return type of intel_vsec_register
Introduce dasharo-acpi platform driver:
- Introduce dasharo-acpi platform driver
ISST:
- Do Not Restore SST MSRs on CPU Online Operation
- Support SST-PP revision 2
- Support SST-TF revision 2
- Update minor version
mellanox:
- Cosmetic changes to improve code style
- Introduce support of Nvidia smart switch
- Rename field to improve code readability
mlxbf-pmc:
- Support additional PMC blocks
mlx-platform:
- Add support for new Nvidia system
mlxreg-dpu:
- Add initial support for Nvidia DPU
- Fix smatch warnings
nvsw-sn2200:
- Add support for new system flavour
- Fix .items in nvsw_sn2201_busbar_hotplug
oxpec:
- Add a lower bounds check in oxp_psy_ext_set_prop()
- Add charge threshold and behaviour to OneXPlayer
- Add support for the OneXPlayer G1
- Add turbo led support to X1 devices
- Adhere to sysfs-class-hwmon and enable pwm on 2
- Convert defines to using tabs
- Follow reverse xmas convention for tt_toggle
- Make turbo val apply a bitmask
- Move fan speed read to separate function
- Move hwmon/oxp-sensors to platform/x86
- Move pwm_enable read to its own function
- Move pwm value read/write to separate functions
- Rename ec group to tt_toggle
- Rename rval to ret in tt_toggle
portwell-ec:
- Add GPIO and WDT driver for Portwell EC
power: supply:
- add inhibit-charge-awake to charge_behaviour
power: supply: core:
- Add additional health status values
silicom:
- use new GPIO line value setter callbacks
sony-laptop:
- Remove unused sony laptop camera code
thermal/drivers/acerhdf:
- Constify struct thermal_zone_device_ops
thinkpad-acpi:
- Add support for new hotkey for camera shutter switch
tools/power/x86/intel-speed-select:
- Skip uncore frequency update
- Support SST PP revision 2 fields
- v1.23 release
tuxedo:
- Add virtual LampArray for TUXEDO NB04 devices
- Prevent invalid Kconfig state
Use strscpy()/scnprintf() with acpi_device_name/class():
- Use strscpy()/scnprintf() with acpi_device_name/class()
Merges:
- Merge branch 'fixes' into for-next
- Merge branch 'intel-sst' of https://github.com/spandruvada/linux-kernel into for-next
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Merge tag 'platform-drivers-x86-v6.16-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86
Pull x86 platform drivers updates from Ilpo Järvinen:
"The changes are mostly business as usual. Besides pdx86 changes, there
are a few power supply changes needed for related pdx86 features, move
of oxpec driver from hwmon (oxp-sensors) to pdx86, and one FW version
warning to hid-asus.
Highlights:
- alienware-wmi-wmax:
- Add HWMON support
- Add ABI and admin-guide documentation
- Expose GPIO debug methods through debug FS
- Support manual fan control and "custom" thermal profile
- amd/hsmp:
- Add sysfs files to show HSMP telemetry
- Report power readings and limits via hwmon
- amd/isp4: Add AMD ISP platform config for OV05C10
- asus-wmi:
- Refactor Ally suspend/resume to work better with older FW
- hid-asus: check ROG Ally MCU version and warn about old FW versions
- dasharo-acpi:
- Add driver for Dasharo devices supporting fans and temperatures
monitoring
- dell-ddv:
- Expose the battery health and manufacture date to userspace
using power supply extensions
- Implement the battery matching algorithm
- dell-pc:
- Improve error propagation
- Use faux device
- int3472:
- Add delays to avoid GPIO regulator spikes
- Add handshake pin support
- Make regulator supply name configurable and allow registering
more than 1 GPIO regulator
- Map mt9m114 powerdown pin to powerenable
- intel/pmc: Add separate SSRAM Telemetry driver
- intel-uncore-freq: Add attributes to show agent types and die ID
- ISST:
- Support SST-TF revision 2 (allows more cores per bucket)
- Support SST-PP revision 2 (fabric 1 frequencies)
- Remove unnecessary SST MSRs restore (the package retains MSRs
despite CPU offlining)
- mellanox: Add support for SN2201, SN4280, SN5610, and SN5640
- mellanox: mlxbf-pmc: Support additional PMC blocks
- oxpec:
- Add OneXFly variants
- Add support for charge limit, charge thresholds, and turbo LED
- Distinguish current X1 variants to avoid unwanted matching to
new variants
- Follow hwmon conventions
- Move from hwmon/oxp-sensors to platform/x86 to match the
enlarged scope
- power supply:
- Add inhibit-charge-awake (needed by oxpec)
- Add additional battery health status values ("blown fuse" and
"cell imbalance") (needed by dell-ddv)
- powerwell-ec: Add driver for Portwell EC supporting GPIO and watchdog
- thinkpad-acpi: Support camera shutter switch hotkey
- tuxedo: Add virtual LampArray for TUXEDO NB04 devices
- tools/power/x86/intel-speed-select:
- Support displaying SST-PP revision 2 fields
- Skip uncore frequency update on newer generations of CPUs
- Miscellaneous cleanups / refactoring / improvements"
* tag 'platform-drivers-x86-v6.16-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (112 commits)
thermal/drivers/acerhdf: Constify struct thermal_zone_device_ops
platform/x86/amd/hsmp: fix building with CONFIG_HWMON=m
platform/x86: asus-wmi: fix build without CONFIG_SUSPEND
docs: ABI: Fix "aassociated" to "associated"
platform/x86: Add AMD ISP platform config for OV05C10
Documentation: admin-guide: pm: Add documentation for die_id
platform/x86/intel-uncore-freq: Add attributes to show die_id
platform/x86/intel: power-domains: Add interface to get Linux die ID
Documentation: admin-guide: pm: Add documentation for agent_types
platform/x86/intel-uncore-freq: Add attributes to show agent types
platform/x86/tuxedo: Prevent invalid Kconfig state
platform/x86: dell-ddv: Expose the battery health to userspace
platform/x86: dell-ddv: Expose the battery manufacture date to userspace
platform/x86: dell-ddv: Implement the battery matching algorithm
power: supply: core: Add additional health status values
platform/x86/amd/hsmp: acpi: Add sysfs files to display HSMP telemetry
platform/x86/amd/hsmp: Report power via hwmon sensors
platform/x86/amd/hsmp: Use a single DRIVER_VERSION for all hsmp modules
platform/mellanox: mlxreg-dpu: Fix smatch warnings
platform: mellanox: nvsw-sn2200: Fix .items in nvsw_sn2201_busbar_hotplug
...
A new virtio RTC driver.
vhost scsi now logs write descriptors so migration works.
Some hardening work in virtio core.
An old spec compliance issue fixed in vhost net.
A couple of cleanups, fixes in vringh, virtio-pci, vdpa.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
Pull virtio updates from Michael Tsirkin:
- A new virtio RTC driver
- vhost scsi now logs write descriptors so migration works
- Some hardening work in virtio core
- An old spec compliance issue fixed in vhost net
- A couple of cleanups, fixes in vringh, virtio-pci, vdpa
* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
virtio: reject shm region if length is zero
virtio_rtc: Add RTC class driver
virtio_rtc: Add Arm Generic Timer cross-timestamping
virtio_rtc: Add PTP clocks
virtio_rtc: Add module and driver core
vringh: use bvec_kmap_local
vhost: vringh: Use matching allocation type in resize_iovec()
virtio-pci: Fix result size returned for the admin command completion
vdpa/octeon_ep: Control PCI dev enabling manually
vhost-scsi: log event queue write descriptors
vhost-scsi: log control queue write descriptors
vhost-scsi: log I/O queue write descriptors
vhost-scsi: adjust vhost_scsi_get_desc() to log vring descriptors
vhost: modify vhost_log_write() for broader users
* Add large stage-2 mapping (THP) support for non-protected guests when
pKVM is enabled, clawing back some performance.
* Enable nested virtualisation support on systems that support it,
though it is disabled by default.
* Add UBSAN support to the standalone EL2 object used in nVHE/hVHE and
protected modes.
* Large rework of the way KVM tracks architecture features and links
them with the effects of control bits. While this has no functional
impact, it ensures correctness of emulation (the data is automatically
extracted from the published JSON files), and helps dealing with the
evolution of the architecture.
* Significant changes to the way pKVM tracks ownership of pages,
avoiding page table walks by storing the state in the hypervisor's
vmemmap. This in turn enables the THP support described above.
* New selftest checking the pKVM ownership transition rules
* Fixes for FEAT_MTE_ASYNC being accidentally advertised to guests
even if the host didn't have it.
* Fixes for the address translation emulation, which happened to be
rather buggy in some specific contexts.
* Fixes for the PMU emulation in NV contexts, decoupling PMCR_EL0.N
from the number of counters exposed to a guest and addressing a
number of issues in the process.
* Add a new selftest for the SVE host state being corrupted by a
guest.
* Keep HCR_EL2.xMO set at all times for systems running with the
kernel at EL2, ensuring that the window for interrupts is slightly
bigger, and avoiding a pretty bad erratum on the AmpereOne HW.
* Add workaround for AmpereOne's erratum AC04_CPU_23, which suffers
from a pretty bad case of TLB corruption unless accesses to HCR_EL2
are heavily synchronised.
* Add a per-VM, per-ITS debugfs entry to dump the state of the ITS
tables in a human-friendly fashion.
* and the usual random cleanups.
LoongArch:
* Don't flush tlb if the host supports hardware page table walks.
* Add KVM selftests support.
RISC-V:
* Add vector registers to get-reg-list selftest
* VCPU reset related improvements
* Remove scounteren initialization from VCPU reset
* Support VCPU reset from userspace using set_mpstate() ioctl
x86:
* Initial support for TDX in KVM. This finally makes it possible to use the
TDX module to run confidential guests on Intel processors. This is quite a
large series, including support for private page tables (managed by the
TDX module and mirrored in KVM for efficiency), forwarding some TDVMCALLs
to userspace, and handling several special VM exits from the TDX module.
This has been in the works for literally years and it's not really possible
to describe everything here, so I'll defer to the various merge commits
up to and including commit 7bcf7246c4 ("Merge branch 'kvm-tdx-finish-initial'
into HEAD").
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull kvm updates from Paolo Bonzini:
"As far as x86 goes this pull request "only" includes TDX host support.
Quotes are appropriate because (at 6k lines and 100+ commits) it is
much bigger than the rest, which will come later this week and
consists mostly of bugfixes and selftests. s390 changes will also come
in the second batch.
ARM:
- Add large stage-2 mapping (THP) support for non-protected guests
when pKVM is enabled, clawing back some performance.
- Enable nested virtualisation support on systems that support it,
though it is disabled by default.
- Add UBSAN support to the standalone EL2 object used in nVHE/hVHE
and protected modes.
- Large rework of the way KVM tracks architecture features and links
them with the effects of control bits. While this has no functional
impact, it ensures correctness of emulation (the data is
automatically extracted from the published JSON files), and helps
dealing with the evolution of the architecture.
- Significant changes to the way pKVM tracks ownership of pages,
avoiding page table walks by storing the state in the hypervisor's
vmemmap. This in turn enables the THP support described above.
- New selftest checking the pKVM ownership transition rules
- Fixes for FEAT_MTE_ASYNC being accidentally advertised to guests
even if the host didn't have it.
- Fixes for the address translation emulation, which happened to be
rather buggy in some specific contexts.
- Fixes for the PMU emulation in NV contexts, decoupling PMCR_EL0.N
from the number of counters exposed to a guest and addressing a
number of issues in the process.
- Add a new selftest for the SVE host state being corrupted by a
guest.
- Keep HCR_EL2.xMO set at all times for systems running with the
kernel at EL2, ensuring that the window for interrupts is slightly
bigger, and avoiding a pretty bad erratum on the AmpereOne HW.
- Add workaround for AmpereOne's erratum AC04_CPU_23, which suffers
from a pretty bad case of TLB corruption unless accesses to HCR_EL2
are heavily synchronised.
- Add a per-VM, per-ITS debugfs entry to dump the state of the ITS
tables in a human-friendly fashion.
- and the usual random cleanups.
LoongArch:
- Don't flush tlb if the host supports hardware page table walks.
- Add KVM selftests support.
RISC-V:
- Add vector registers to get-reg-list selftest
- VCPU reset related improvements
- Remove scounteren initialization from VCPU reset
- Support VCPU reset from userspace using set_mpstate() ioctl
x86:
- Initial support for TDX in KVM.
This finally makes it possible to use the TDX module to run
confidential guests on Intel processors. This is quite a large
series, including support for private page tables (managed by the
TDX module and mirrored in KVM for efficiency), forwarding some
TDVMCALLs to userspace, and handling several special VM exits from
the TDX module.
This has been in the works for literally years and it's not really
possible to describe everything here, so I'll defer to the various
merge commits up to and including commit 7bcf7246c4 ('Merge
branch 'kvm-tdx-finish-initial' into HEAD')"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (248 commits)
x86/tdx: mark tdh_vp_enter() as __flatten
Documentation: virt/kvm: remove unreferenced footnote
RISC-V: KVM: lock the correct mp_state during reset
KVM: arm64: Fix documentation for vgic_its_iter_next()
KVM: arm64: np-guest CMOs with PMD_SIZE fixmap
KVM: arm64: Stage-2 huge mappings for np-guests
KVM: arm64: Add a range to pkvm_mappings
KVM: arm64: Convert pkvm_mappings to interval tree
KVM: arm64: Add a range to __pkvm_host_test_clear_young_guest()
KVM: arm64: Add a range to __pkvm_host_wrprotect_guest()
KVM: arm64: Add a range to __pkvm_host_unshare_guest()
KVM: arm64: Add a range to __pkvm_host_share_guest()
KVM: arm64: Introduce for_each_hyp_page
KVM: arm64: Handle huge mappings for np-guest CMOs
KVM: arm64: nv: Release faulted-in VNCR page from mmu_lock critical section
KVM: arm64: nv: Handle TLBI S1E2 for VNCR invalidation with mmu_lock held
KVM: arm64: nv: Hold mmu_lock when invalidating VNCR SW-TLB before translating
RISC-V: KVM: add KVM_CAP_RISCV_MP_STATE_RESET
RISC-V: KVM: Remove scounteren initialization
KVM: RISC-V: remove unnecessary SBI reset state
...
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Merge tag 'bpf-next-6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
Pull bpf updates from Alexei Starovoitov:
- Fix and improve BTF deduplication of identical BTF types (Alan
Maguire and Andrii Nakryiko)
- Support up to 12 arguments in BPF trampoline on arm64 (Xu Kuohai and
Alexis Lothoré)
- Support load-acquire and store-release instructions in BPF JIT on
riscv64 (Andrea Parri)
- Fix uninitialized values in BPF_{CORE,PROBE}_READ macros (Anton
Protopopov)
- Streamline allowed helpers across program types (Feng Yang)
- Support atomic update for hashtab of BPF maps (Hou Tao)
- Implement json output for BPF helpers (Ihor Solodrai)
- Several s390 JIT fixes (Ilya Leoshkevich)
- Various sockmap fixes (Jiayuan Chen)
- Support mmap of vmlinux BTF data (Lorenz Bauer)
- Support BPF rbtree traversal and list peeking (Martin KaFai Lau)
- Tests for sockmap/sockhash redirection (Michal Luczaj)
- Introduce kfuncs for memory reads into dynptrs (Mykyta Yatsenko)
- Add support for dma-buf iterators in BPF (T.J. Mercier)
- The verifier support for __bpf_trap() (Yonghong Song)
* tag 'bpf-next-6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (135 commits)
bpf, arm64: Remove unused-but-set function and variable.
selftests/bpf: Add tests with stack ptr register in conditional jmp
bpf: Do not include stack ptr register in precision backtracking bookkeeping
selftests/bpf: enable many-args tests for arm64
bpf, arm64: Support up to 12 function arguments
bpf: Check rcu_read_lock_trace_held() in bpf_map_lookup_percpu_elem()
bpf: Avoid __bpf_prog_ret0_warn when jit fails
bpftool: Add support for custom BTF path in prog load/loadall
selftests/bpf: Add unit tests with __bpf_trap() kfunc
bpf: Warn with __bpf_trap() kfunc maybe due to uninitialized variable
bpf: Remove special_kfunc_set from verifier
selftests/bpf: Add test for open coded dmabuf_iter
selftests/bpf: Add test for dmabuf_iter
bpf: Add open coded dmabuf iterator
bpf: Add dmabuf iterator
dma-buf: Rename debugfs symbols
bpf: Fix error return value in bpf_copy_from_user_dynptr
libbpf: Use mmap to parse vmlinux BTF from sysfs
selftests: bpf: Add a test for mmapable vmlinux BTF
btf: Allow mmap of vmlinux btf
...
Core
----
- Implement the Device Memory TCP transmit path, allowing zero-copy
data transmission on top of TCP from e.g. GPU memory to the wire.
- Move all the IPv6 routing tables management outside the RTNL scope,
under its own lock and RCU. The route control path is now 3x times
faster.
- Convert queue related netlink ops to instance lock, reducing
again the scope of the RTNL lock. This improves the control plane
scalability.
- Refactor the software crc32c implementation, removing unneeded
abstraction layers and improving significantly the related
micro-benchmarks.
- Optimize the GRO engine for UDP-tunneled traffic, for a 10%
performance improvement in related stream tests.
- Cover more per-CPU storage with local nested BH locking; this is a
prep work to remove the current per-CPU lock in local_bh_disable()
on PREMPT_RT.
- Introduce and use nlmsg_payload helper, combining buffer bounds
verification with accessing payload carried by netlink messages.
Netfilter
---------
- Rewrite the procfs conntrack table implementation, improving
considerably the dump performance. A lot of user-space tools
still use this interface.
- Implement support for wildcard netdevice in netdev basechain
and flowtables.
- Integrate conntrack information into nft trace infrastructure.
- Export set count and backend name to userspace, for better
introspection.
BPF
---
- BPF qdisc support: BPF-qdisc can be implemented with BPF struct_ops
programs and can be controlled in similar way to traditional qdiscs
using the "tc qdisc" command.
- Refactor the UDP socket iterator, addressing long standing issues
WRT duplicate hits or missed sockets.
Protocols
---------
- Improve TCP receive buffer auto-tuning and increase the default
upper bound for the receive buffer; overall this improves the single
flow maximum thoughput on 200Gbs link by over 60%.
- Add AFS GSSAPI security class to AF_RXRPC; it provides transport
security for connections to the AFS fileserver and VL server.
- Improve TCP multipath routing, so that the sources address always
matches the nexthop device.
- Introduce SO_PASSRIGHTS for AF_UNIX, to allow disabling SCM_RIGHTS,
and thus preventing DoS caused by passing around problematic FDs.
- Retire DCCP socket. DCCP only receives updates for bugs, and major
distros disable it by default. Its removal allows for better
organisation of TCP fields to reduce the number of cache lines hit
in the fast path.
- Extend TCP drop-reason support to cover PAWS checks.
Driver API
----------
- Reorganize PTP ioctl flag support to require an explicit opt-in for
the drivers, avoiding the problem of drivers not rejecting new
unsupported flags.
- Converted several device drivers to timestamping APIs.
- Introduce per-PHY ethtool dump helpers, improving the support for
dump operations targeting PHYs.
Tests and tooling
-----------------
- Add support for classic netlink in user space C codegen, so that
ynl-c can now read, create and modify links, routes addresses and
qdisc layer configuration.
- Add ynl sub-types for binary attributes, allowing ynl-c to output
known struct instead of raw binary data, clarifying the classic
netlink output.
- Extend MPTCP selftests to improve the code-coverage.
- Add tests for XDP tail adjustment in AF_XDP.
New hardware / drivers
----------------------
- OpenVPN virtual driver: offload OpenVPN data channels processing
to the kernel-space, increasing the data transfer throughput WRT
the user-space implementation.
- Renesas glue driver for the gigabit ethernet RZ/V2H(P) SoC.
- Broadcom asp-v3.0 ethernet driver.
- AMD Renoir ethernet device.
- ReakTek MT9888 2.5G ethernet PHY driver.
- Aeonsemi 10G C45 PHYs driver.
Drivers
-------
- Ethernet high-speed NICs:
- nVidia/Mellanox (mlx5):
- refactor the stearing table handling to reduce significantly
the amount of memory used
- add support for complex matches in H/W flow steering
- improve flow streeing error handling
- convert to netdev instance locking
- Intel (100G, ice, igb, ixgbe, idpf):
- ice: add switchdev support for LLDP traffic over VF
- ixgbe: add firmware manipulation and regions devlink support
- igb: introduce support for frame transmission premption
- igb: adds persistent NAPI configuration
- idpf: introduce RDMA support
- idpf: add initial PTP support
- Meta (fbnic):
- extend hardware stats coverage
- add devlink dev flash support
- Broadcom (bnxt):
- add support for RX-side device memory TCP
- Wangxun (txgbe):
- implement support for udp tunnel offload
- complete PTP and SRIOV support for AML 25G/10G devices
- Ethernet NICs embedded and virtual:
- Google (gve):
- add device memory TCP TX support
- Amazon (ena):
- support persistent per-NAPI config
- Airoha:
- add H/W support for L2 traffic offload
- add per flow stats for flow offloading
- RealTek (rtl8211): add support for WoL magic packet
- Synopsys (stmmac):
- dwmac-socfpga 1000BaseX support
- add Loongson-2K3000 support
- introduce support for hardware-accelerated VLAN stripping
- Broadcom (bcmgenet):
- expose more H/W stats
- Freescale (enetc, dpaa2-eth):
- enetc: add MAC filter, VLAN filter RSS and loopback support
- dpaa2-eth: convert to H/W timestamping APIs
- vxlan: convert FDB table to rhashtable, for better scalabilty
- veth: apply qdisc backpressure on full ring to reduce TX drops
- Ethernet switches:
- Microchip (kzZ88x3): add ETS scheduler support
- Ethernet PHYs:
- RealTek (rtl8211):
- add support for WoL magic packet
- add support for PHY LEDs
- CAN:
- Adds RZ/G3E CANFD support to the rcar_canfd driver.
- Preparatory work for CAN-XL support.
- Add self-tests framework with support for CAN physical interfaces.
- WiFi:
- mac80211:
- scan improvements with multi-link operation (MLO)
- Qualcomm (ath12k):
- enable AHB support for IPQ5332
- add monitor interface support to QCN9274
- add multi-link operation support to WCN7850
- add 802.11d scan offload support to WCN7850
- monitor mode for WCN7850, better 6 GHz regulatory
- Qualcomm (ath11k):
- restore hibernation support
- MediaTek (mt76):
- WiFi-7 improvements
- implement support for mt7990
- Intel (iwlwifi):
- enhanced multi-link single-radio (EMLSR) support on 5 GHz links
- rework device configuration
- RealTek (rtw88):
- improve throughput for RTL8814AU
- RealTek (rtw89):
- add multi-link operation support
- STA/P2P concurrency improvements
- support different SAR configs by antenna
- Bluetooth:
- introduce HCI Driver protocol
- btintel_pcie: do not generate coredump for diagnostic events
- btusb: add HCI Drv commands for configuring altsetting
- btusb: add RTL8851BE device 0x0bda:0xb850
- btusb: add new VID/PID 13d3/3584 for MT7922
- btusb: add new VID/PID 13d3/3630 and 13d3/3613 for MT7925
- btnxpuart: implement host-wakeup feature
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Merge tag 'net-next-6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
Pull networking updates from Paolo Abeni:
"Core:
- Implement the Device Memory TCP transmit path, allowing zero-copy
data transmission on top of TCP from e.g. GPU memory to the wire.
- Move all the IPv6 routing tables management outside the RTNL scope,
under its own lock and RCU. The route control path is now 3x times
faster.
- Convert queue related netlink ops to instance lock, reducing again
the scope of the RTNL lock. This improves the control plane
scalability.
- Refactor the software crc32c implementation, removing unneeded
abstraction layers and improving significantly the related
micro-benchmarks.
- Optimize the GRO engine for UDP-tunneled traffic, for a 10%
performance improvement in related stream tests.
- Cover more per-CPU storage with local nested BH locking; this is a
prep work to remove the current per-CPU lock in local_bh_disable()
on PREMPT_RT.
- Introduce and use nlmsg_payload helper, combining buffer bounds
verification with accessing payload carried by netlink messages.
Netfilter:
- Rewrite the procfs conntrack table implementation, improving
considerably the dump performance. A lot of user-space tools still
use this interface.
- Implement support for wildcard netdevice in netdev basechain and
flowtables.
- Integrate conntrack information into nft trace infrastructure.
- Export set count and backend name to userspace, for better
introspection.
BPF:
- BPF qdisc support: BPF-qdisc can be implemented with BPF struct_ops
programs and can be controlled in similar way to traditional qdiscs
using the "tc qdisc" command.
- Refactor the UDP socket iterator, addressing long standing issues
WRT duplicate hits or missed sockets.
Protocols:
- Improve TCP receive buffer auto-tuning and increase the default
upper bound for the receive buffer; overall this improves the
single flow maximum thoughput on 200Gbs link by over 60%.
- Add AFS GSSAPI security class to AF_RXRPC; it provides transport
security for connections to the AFS fileserver and VL server.
- Improve TCP multipath routing, so that the sources address always
matches the nexthop device.
- Introduce SO_PASSRIGHTS for AF_UNIX, to allow disabling SCM_RIGHTS,
and thus preventing DoS caused by passing around problematic FDs.
- Retire DCCP socket. DCCP only receives updates for bugs, and major
distros disable it by default. Its removal allows for better
organisation of TCP fields to reduce the number of cache lines hit
in the fast path.
- Extend TCP drop-reason support to cover PAWS checks.
Driver API:
- Reorganize PTP ioctl flag support to require an explicit opt-in for
the drivers, avoiding the problem of drivers not rejecting new
unsupported flags.
- Converted several device drivers to timestamping APIs.
- Introduce per-PHY ethtool dump helpers, improving the support for
dump operations targeting PHYs.
Tests and tooling:
- Add support for classic netlink in user space C codegen, so that
ynl-c can now read, create and modify links, routes addresses and
qdisc layer configuration.
- Add ynl sub-types for binary attributes, allowing ynl-c to output
known struct instead of raw binary data, clarifying the classic
netlink output.
- Extend MPTCP selftests to improve the code-coverage.
- Add tests for XDP tail adjustment in AF_XDP.
New hardware / drivers:
- OpenVPN virtual driver: offload OpenVPN data channels processing to
the kernel-space, increasing the data transfer throughput WRT the
user-space implementation.
- Renesas glue driver for the gigabit ethernet RZ/V2H(P) SoC.
- Broadcom asp-v3.0 ethernet driver.
- AMD Renoir ethernet device.
- ReakTek MT9888 2.5G ethernet PHY driver.
- Aeonsemi 10G C45 PHYs driver.
Drivers:
- Ethernet high-speed NICs:
- nVidia/Mellanox (mlx5):
- refactor the steering table handling to significantly
reduce the amount of memory used
- add support for complex matches in H/W flow steering
- improve flow streeing error handling
- convert to netdev instance locking
- Intel (100G, ice, igb, ixgbe, idpf):
- ice: add switchdev support for LLDP traffic over VF
- ixgbe: add firmware manipulation and regions devlink support
- igb: introduce support for frame transmission premption
- igb: adds persistent NAPI configuration
- idpf: introduce RDMA support
- idpf: add initial PTP support
- Meta (fbnic):
- extend hardware stats coverage
- add devlink dev flash support
- Broadcom (bnxt):
- add support for RX-side device memory TCP
- Wangxun (txgbe):
- implement support for udp tunnel offload
- complete PTP and SRIOV support for AML 25G/10G devices
- Ethernet NICs embedded and virtual:
- Google (gve):
- add device memory TCP TX support
- Amazon (ena):
- support persistent per-NAPI config
- Airoha:
- add H/W support for L2 traffic offload
- add per flow stats for flow offloading
- RealTek (rtl8211): add support for WoL magic packet
- Synopsys (stmmac):
- dwmac-socfpga 1000BaseX support
- add Loongson-2K3000 support
- introduce support for hardware-accelerated VLAN stripping
- Broadcom (bcmgenet):
- expose more H/W stats
- Freescale (enetc, dpaa2-eth):
- enetc: add MAC filter, VLAN filter RSS and loopback support
- dpaa2-eth: convert to H/W timestamping APIs
- vxlan: convert FDB table to rhashtable, for better scalabilty
- veth: apply qdisc backpressure on full ring to reduce TX drops
- Ethernet switches:
- Microchip (kzZ88x3): add ETS scheduler support
- Ethernet PHYs:
- RealTek (rtl8211):
- add support for WoL magic packet
- add support for PHY LEDs
- CAN:
- Adds RZ/G3E CANFD support to the rcar_canfd driver.
- Preparatory work for CAN-XL support.
- Add self-tests framework with support for CAN physical interfaces.
- WiFi:
- mac80211:
- scan improvements with multi-link operation (MLO)
- Qualcomm (ath12k):
- enable AHB support for IPQ5332
- add monitor interface support to QCN9274
- add multi-link operation support to WCN7850
- add 802.11d scan offload support to WCN7850
- monitor mode for WCN7850, better 6 GHz regulatory
- Qualcomm (ath11k):
- restore hibernation support
- MediaTek (mt76):
- WiFi-7 improvements
- implement support for mt7990
- Intel (iwlwifi):
- enhanced multi-link single-radio (EMLSR) support on 5 GHz links
- rework device configuration
- RealTek (rtw88):
- improve throughput for RTL8814AU
- RealTek (rtw89):
- add multi-link operation support
- STA/P2P concurrency improvements
- support different SAR configs by antenna
- Bluetooth:
- introduce HCI Driver protocol
- btintel_pcie: do not generate coredump for diagnostic events
- btusb: add HCI Drv commands for configuring altsetting
- btusb: add RTL8851BE device 0x0bda:0xb850
- btusb: add new VID/PID 13d3/3584 for MT7922
- btusb: add new VID/PID 13d3/3630 and 13d3/3613 for MT7925
- btnxpuart: implement host-wakeup feature"
* tag 'net-next-6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1611 commits)
selftests/bpf: Fix bpf selftest build warning
selftests: netfilter: Fix skip of wildcard interface test
net: phy: mscc: Stop clearing the the UDPv4 checksum for L2 frames
net: openvswitch: Fix the dead loop of MPLS parse
calipso: Don't call calipso functions for AF_INET sk.
selftests/tc-testing: Add a test for HFSC eltree double add with reentrant enqueue behaviour on netem
net_sched: hfsc: Address reentrant enqueue adding class to eltree twice
octeontx2-pf: QOS: Refactor TC_HTB_LEAF_DEL_LAST callback
octeontx2-pf: QOS: Perform cache sync on send queue teardown
net: mana: Add support for Multi Vports on Bare metal
net: devmem: ncdevmem: remove unused variable
net: devmem: ksft: upgrade rx test to send 1K data
net: devmem: ksft: add 5 tuple FS support
net: devmem: ksft: add exit_wait to make rx test pass
net: devmem: ksft: add ipv4 support
net: devmem: preserve sockc_err
page_pool: fix ugly page_pool formatting
net: devmem: move list_add to net_devmem_bind_dmabuf.
selftests: netfilter: nft_queue.sh: include file transfer duration in log message
net: phy: mscc: Fix memory leak when using one step timestamping
...
new drivers:
- bring in the asahi uapi header standalone
- nova-drm: stub driver
rust dependencies (for nova-core):
- auxiliary
- bus abstractions
- driver registration
- sample driver
- devres changes from driver-core
- revocable changes
core:
- add Apple fourcc modifiers
- add virtio capset definitions
- extend EXPORT_SYNC_FILE for timeline syncobjs
- convert to devm_platform_ioremap_resource
- refactor shmem helper page pinning
- DP powerup/down link helpers
- remove disgusting turds
- extended %p4cc in vsprintf.c to support fourcc prints
- change vsprintf %p4cn to %p4chR, remove %p4cn
- Add drm_file_err function
- IN_FORMATS_ASYNC property
- move sitronix from tiny to their own subdir
rust:
- add drm core infrastructure rust abstractions
(device/driver, ioctl, file, gem)
dma-buf:
- adjust sg handling to not cache map on attach
- allow setting dma-device for import
- Add a helper to sort and deduplicate dma_fence arrays
docs:
- updated drm scheduler docs
- fbdev todo update
- fb rendering
- actual brightness
ttm:
- fix delayed destroy resv object
bridge:
- add kunit tests
- convert tc358775 to atomic
- convert drivers to devm_drm_bridge_alloc
- convert rk3066_hdmi to bridge driver
scheduler:
- add kunit tests
panel:
- refcount panels to improve lifetime handling
- Powertip PH128800T004-ZZA01
- NLT NL13676BC25-03F, Tianma TM070JDHG34-00
- Himax HX8279/HX8279-D DDIC
- Visionox G2647FB105
- Sitronix ST7571
- ZOTAC rotation quirk
vkms:
- allow attaching more displays
i915:
- xe3lpd display updates
- vrr refactor
- intel_display struct conversions
- xe2hpd memory type identification
- add link rate/count to i915_display_info
- cleanup VGA plane handling
- refactor HDCP GSC
- fix SLPC wait boosting reference counting
- add 20ms delay to engine reset
- fix fence release on early probe errors
xe:
- SRIOV updates
- BMG PCI ID update
- support separate firmware for each GT
- SVM fix, prelim SVM multi-device work
- export fan speed
- temp disable d3cold on BMG
- backup VRAM in PM notifier instead of suspend/freeze
- update xe_ttm_access_memory to use GPU for non-visible access
- fix guc_info debugfs for VFs
- use copy_from_user instead of __copy_from_user
- append PCIe gen5 limitations to xe_firmware document
amdgpu:
- DSC cleanup
- DC Scaling updates
- Fused I2C-over-AUX updates
- DMUB updates
- Use drm_file_err in amdgpu
- Enforce isolation updates
- Use new dma_fence helpers
- USERQ fixes
- Documentation updates
- SR-IOV updates
- RAS updates
- PSP 12 cleanups
- GC 9.5 updates
- SMU 13.x updates
- VCN / JPEG SR-IOV updates
amdkfd:
- Update error messages for SDMA
- Userptr updates
- XNACK fixes
radeon:
- CIK doorbell cleanup
nouveau:
- add support for NVIDIA r570 GSP firmware
- enable Hopper/Blackwell support
nova-core:
- fix task list
- register definition infrastructure
- move firmware into own rust module
- register auxiliary device for nova-drm
nova-drm:
- initial driver skeleton
msm:
- GPU:
- ACD (adaptive clock distribution) for X1-85
- drop fictional address_space_size
- improve GMU HFI response time out robustness
- fix crash when throttling during boot
- DPU:
- use single CTL path for flushing on DPU 5.x+
- improve SSPP allocation code for better sharing
- Enabled SmartDMA on SM8150, SC8180X, SC8280XP, SM8550
- Added SAR2130P support
- Disabled DSC support on MSM8937, MSM8917, MSM8953, SDM660
- DP:
- switch to new audio helpers
- better LTTPR handling
- DSI:
- Added support for SA8775P
- Added SAR2130P support
- HDMI:
- Switched to use new helpers for ACR data
- Fixed old standing issue of HPD not working in some cases
amdxdna:
- add dma-buf support
- allow empty command submits
renesas:
- add dma-buf support
- add zpos, alpha, blend support
panthor:
- fail properly for NO_MMAP bos
- add SET_LABEL ioctl
- debugfs BO dumping support
imagination:
- update DT bindings
- support TI AM68 GPU
hibmc:
- improve interrupt handling and HPD support
virtio:
- add panic handler support
rockchip:
- add RK3588 support
- add DP AUX bus panel support
ivpu:
- add heartbeat based hangcheck
mediatek:
- prepares support for MT8195/99 HDMIv2/DDCv2
anx7625:
- improve HPD
tegra:
- speed up firmware loading
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Merge tag 'drm-next-2025-05-28' of https://gitlab.freedesktop.org/drm/kernel
Pull drm updates from Dave Airlie:
"As part of building up nova-core/nova-drm pieces we've brought in some
rust abstractions through this tree, aux bus being the main one, with
devres changes also in the driver-core tree. Along with the drm core
abstractions and enough nova-core/nova-drm to use them. This is still
all stub work under construction, to build the nova driver upstream.
The other big NVIDIA related one is nouveau adds support for
Hopper/Blackwell GPUs, this required a new GSP firmware update to
570.144, and a bunch of rework in order to support multiple fw
interfaces.
There is also the introduction of an asahi uapi header file as a
precursor to getting the real driver in later, but to unblock
userspace mesa packages while the driver is trapped behind rust
enablement.
Otherwise it's the usual mixture of stuff all over, amdgpu, i915/xe,
and msm being the main ones, and some changes to vsprintf.
new drivers:
- bring in the asahi uapi header standalone
- nova-drm: stub driver
rust dependencies (for nova-core):
- auxiliary
- bus abstractions
- driver registration
- sample driver
- devres changes from driver-core
- revocable changes
core:
- add Apple fourcc modifiers
- add virtio capset definitions
- extend EXPORT_SYNC_FILE for timeline syncobjs
- convert to devm_platform_ioremap_resource
- refactor shmem helper page pinning
- DP powerup/down link helpers
- extended %p4cc in vsprintf.c to support fourcc prints
- change vsprintf %p4cn to %p4chR, remove %p4cn
- Add drm_file_err function
- IN_FORMATS_ASYNC property
- move sitronix from tiny to their own subdir
rust:
- add drm core infrastructure rust abstractions
(device/driver, ioctl, file, gem)
dma-buf:
- adjust sg handling to not cache map on attach
- allow setting dma-device for import
- Add a helper to sort and deduplicate dma_fence arrays
docs:
- updated drm scheduler docs
- fbdev todo update
- fb rendering
- actual brightness
ttm:
- fix delayed destroy resv object
bridge:
- add kunit tests
- convert tc358775 to atomic
- convert drivers to devm_drm_bridge_alloc
- convert rk3066_hdmi to bridge driver
scheduler:
- add kunit tests
panel:
- refcount panels to improve lifetime handling
- Powertip PH128800T004-ZZA01
- NLT NL13676BC25-03F, Tianma TM070JDHG34-00
- Himax HX8279/HX8279-D DDIC
- Visionox G2647FB105
- Sitronix ST7571
- ZOTAC rotation quirk
vkms:
- allow attaching more displays
i915:
- xe3lpd display updates
- vrr refactor
- intel_display struct conversions
- xe2hpd memory type identification
- add link rate/count to i915_display_info
- cleanup VGA plane handling
- refactor HDCP GSC
- fix SLPC wait boosting reference counting
- add 20ms delay to engine reset
- fix fence release on early probe errors
xe:
- SRIOV updates
- BMG PCI ID update
- support separate firmware for each GT
- SVM fix, prelim SVM multi-device work
- export fan speed
- temp disable d3cold on BMG
- backup VRAM in PM notifier instead of suspend/freeze
- update xe_ttm_access_memory to use GPU for non-visible access
- fix guc_info debugfs for VFs
- use copy_from_user instead of __copy_from_user
- append PCIe gen5 limitations to xe_firmware document
amdgpu:
- DSC cleanup
- DC Scaling updates
- Fused I2C-over-AUX updates
- DMUB updates
- Use drm_file_err in amdgpu
- Enforce isolation updates
- Use new dma_fence helpers
- USERQ fixes
- Documentation updates
- SR-IOV updates
- RAS updates
- PSP 12 cleanups
- GC 9.5 updates
- SMU 13.x updates
- VCN / JPEG SR-IOV updates
amdkfd:
- Update error messages for SDMA
- Userptr updates
- XNACK fixes
radeon:
- CIK doorbell cleanup
nouveau:
- add support for NVIDIA r570 GSP firmware
- enable Hopper/Blackwell support
nova-core:
- fix task list
- register definition infrastructure
- move firmware into own rust module
- register auxiliary device for nova-drm
nova-drm:
- initial driver skeleton
msm:
- GPU:
- ACD (adaptive clock distribution) for X1-85
- drop fictional address_space_size
- improve GMU HFI response time out robustness
- fix crash when throttling during boot
- DPU:
- use single CTL path for flushing on DPU 5.x+
- improve SSPP allocation code for better sharing
- Enabled SmartDMA on SM8150, SC8180X, SC8280XP, SM8550
- Added SAR2130P support
- Disabled DSC support on MSM8937, MSM8917, MSM8953, SDM660
- DP:
- switch to new audio helpers
- better LTTPR handling
- DSI:
- Added support for SA8775P
- Added SAR2130P support
- HDMI:
- Switched to use new helpers for ACR data
- Fixed old standing issue of HPD not working in some cases
amdxdna:
- add dma-buf support
- allow empty command submits
renesas:
- add dma-buf support
- add zpos, alpha, blend support
panthor:
- fail properly for NO_MMAP bos
- add SET_LABEL ioctl
- debugfs BO dumping support
imagination:
- update DT bindings
- support TI AM68 GPU
hibmc:
- improve interrupt handling and HPD support
virtio:
- add panic handler support
rockchip:
- add RK3588 support
- add DP AUX bus panel support
ivpu:
- add heartbeat based hangcheck
mediatek:
- prepares support for MT8195/99 HDMIv2/DDCv2
anx7625:
- improve HPD
tegra:
- speed up firmware loading
* tag 'drm-next-2025-05-28' of https://gitlab.freedesktop.org/drm/kernel: (1627 commits)
drm/nouveau/tegra: Fix error pointer vs NULL return in nvkm_device_tegra_resource_addr()
drm/xe: Default auto_link_downgrade status to false
drm/xe/guc: Make creation of SLPC debugfs files conditional
drm/i915/display: Add check for alloc_ordered_workqueue() and alloc_workqueue()
drm/i915/dp_mst: Work around Thunderbolt sink disconnect after SINK_COUNT_ESI read
drm/i915/ptl: Use everywhere the correct DDI port clock select mask
drm/nouveau/kms: add support for GB20x
drm/dp: add option to disable zero sized address only transactions.
drm/nouveau: add support for GB20x
drm/nouveau/gsp: add hal for fifo.chan.doorbell_handle
drm/nouveau: add support for GB10x
drm/nouveau/gf100-: track chan progress with non-WFI semaphore release
drm/nouveau/nv50-: separate CHANNEL_GPFIFO handling out from CHANNEL_DMA
drm/nouveau: add helper functions for allocating pinned/cpu-mapped bos
drm/nouveau: add support for GH100
drm/nouveau: improve handling of 64-bit BARs
drm/nouveau/gv100-: switch to volta semaphore methods
drm/nouveau/gsp: support deeper page tables in COPY_SERVER_RESERVED_PDES
drm/nouveau/gsp: init client VMMs with NV0080_CTRL_DMA_SET_PAGE_DIRECTORY
drm/nouveau/gsp: fetch level shift and PDE from BAR2 VMM
...
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Merge tag 'media/v6.16-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
Pull media updates from Mauro Carvalho Chehab:
- v4l2-core fix: V4L2_BUF_TYPE_VIDEO_OVERLAY is capture, not output
- New driver: Amlogic C3 ISP
- New sensor drivers: ST VD55G1 and VD56G3, OmniVision OV02C10
- amlogic: c3-mipi-csi2: Handle 64-bits division
- a fix for 64-bits division at the amlogic c3-mipi-csi2 driver
- Changes at atomisp to support mainline mt9m114 driver and remove
deprecated GPIO APIs
- various cleanups, fixes and enhancements
* tag 'media/v6.16-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (314 commits)
media: rkvdec: h264: Support High 10 and 4:2:2 profiles
media: rkvdec: Add get_image_fmt ops
media: rkvdec: Initialize the m2m context before the controls
media: rkvdec: h264: Limit minimum profile to constrained baseline
media: mediatek: jpeg: support 34bits
media: verisilicon: Free post processor buffers on error
media: platform: mtk-mdp3: Remove unused mdp_get_plat_device
media: amlogic: c3-mipi-csi2: Handle 64-bits division
media: uvcvideo: Use dev_err_probe for devm_gpiod_get_optional
media: uvcvideo: Fix deferred probing error
media: uvcvideo: Rollback non processed entities on error
media: uvcvideo: Send control events for partial succeeds
media: uvcvideo: Return the number of processed controls
media: uvcvideo: Do not turn on the camera for some ioctls
media: uvcvideo: Make power management granular
media: uvcvideo: Increase/decrease the PM counter per IOCTL
media: uvcvideo: Create uvc_pm_(get|put) functions
media: uvcvideo: Keep streaming state in the file handle
Documentation: media: Add documentation file c3-isp.rst
Documentation: media: Add documentation file metafmt-c3-isp.rst
...
Expose the virtio-rtc UTC-like clock as an RTC clock to userspace - if it
is present, and if it does not step on leap seconds. The RTC class enables
the virtio-rtc device to resume the system from sleep states on RTC alarm.
Support RTC alarm if the virtio-rtc alarm feature is present. The
virtio-rtc device signals an alarm by marking an alarmq buffer as used.
Peculiarities
-------------
A virtio-rtc clock is a bit special for an RTC clock in that
- the clock may step (also backwards) autonomously at any time and
- the device, and its notification mechanism, will be reset during boot or
resume from sleep.
The virtio-rtc device avoids that the driver might miss an alarm. The
device signals an alarm whenever the clock has reached or passed the alarm
time, and also when the device is reset (on boot or resume from sleep), if
the alarm time is in the past.
Open Issue
----------
The CLOCK_BOOTTIME_ALARM will use the RTC clock to wake up from sleep, and
implicitly assumes that no RTC clock steps will occur during sleep. The RTC
class driver does not know whether the current alarm is a real-time alarm
or a boot-time alarm.
Perhaps this might be handled by the driver also setting a virtio-rtc
monotonic alarm (which uses a clock similar to CLOCK_BOOTTIME_ALARM). The
virtio-rtc monotonic alarm would just be used to wake up in case it was a
CLOCK_BOOTTIME_ALARM alarm.
Otherwise, the behavior should not differ from other RTC class drivers.
Signed-off-by: Peter Hilber <quic_philber@quicinc.com>
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Message-Id: <20250509160734.1772-5-quic_philber@quicinc.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Add the virtio_rtc module and driver core. The virtio_rtc module implements
a driver compatible with the proposed Virtio RTC device specification.
The Virtio RTC (Real Time Clock) device provides information about current
time. The device can provide different clocks, e.g. for the UTC or TAI time
standards, or for physical time elapsed since some past epoch. The driver
can read the clocks with simple or more accurate methods.
Implement the core, which interacts with the Virtio RTC device. Apart from
this, the core does not expose functionality outside of the virtio_rtc
module. Follow-up patches will expose PTP clocks and an RTC Class device.
Provide synchronous messaging, which is enough for the expected time
synchronization use cases through PTP clocks (similar to ptp_kvm) or RTC
Class device.
Signed-off-by: Peter Hilber <quic_philber@quicinc.com>
Message-Id: <20250509160734.1772-2-quic_philber@quicinc.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
The current netlink API for WireGuard does not directly support removal
of allowed ips from a peer. A user can remove an allowed ip from a peer
in one of two ways:
1. By using the WGPEER_F_REPLACE_ALLOWEDIPS flag and providing a new
list of allowed ips which omits the allowed ip that is to be removed.
2. By reassigning an allowed ip to a "dummy" peer then removing that
peer with WGPEER_F_REMOVE_ME.
With the first approach, the driver completely rebuilds the allowed ip
list for a peer. If my current configuration is such that a peer has
allowed ips 192.168.0.2 and 192.168.0.3 and I want to remove 192.168.0.2
the actual transition looks like this.
[192.168.0.2, 192.168.0.3] <-- Initial state
[] <-- Step 1: Allowed ips removed for peer
[192.168.0.3] <-- Step 2: Allowed ips added back for peer
This is true even if the allowed ip list is small and the update does
not need to be batched into multiple WG_CMD_SET_DEVICE requests, as the
removal and subsequent addition of ips is non-atomic within a single
request. Consequently, wg_allowedips_lookup_dst and
wg_allowedips_lookup_src may return NULL while reconfiguring a peer even
for packets bound for ips a user did not intend to remove leading to
unintended interruptions in connectivity. This presents in userspace as
failed calls to sendto and sendmsg for UDP sockets. In my case, I ran
netperf while repeatedly reconfiguring the allowed ips for a peer with
wg.
/usr/local/bin/netperf -H 10.102.73.72 -l 10m -t UDP_STREAM -- -R 1 -m 1024
send_data: data send error: No route to host (errno 113)
netperf: send_omni: send_data failed: No route to host
While this may not be of particular concern for environments where peers
and allowed ips are mostly static, systems like Cilium manage peers and
allowed ips in a dynamic environment where peers (i.e. Kubernetes nodes)
and allowed ips (i.e. pods running on those nodes) can frequently
change making WGPEER_F_REPLACE_ALLOWEDIPS problematic.
The second approach avoids any possible connectivity interruptions
but is hacky and less direct, requiring the creation of a temporary
peer just to dispose of an allowed ip.
Introduce a new flag called WGALLOWEDIP_F_REMOVE_ME which in the same
way that WGPEER_F_REMOVE_ME allows a user to remove a single peer from
a WireGuard device's configuration allows a user to remove an ip from a
peer's set of allowed ips. This enables incremental updates to a
device's configuration without any connectivity blips or messy
workarounds.
A corresponding patch for wg extends the existing `wg set` interface to
leverage this feature.
$ wg set wg0 peer <PUBKEY> allowed-ips +192.168.88.0/24,-192.168.0.1/32
When '+' or '-' is prepended to any ip in the list, wg clears
WGPEER_F_REPLACE_ALLOWEDIPS and sets the WGALLOWEDIP_F_REMOVE_ME flag on
any ip prefixed with '-'.
Signed-off-by: Jordan Rife <jordan@jrife.io>
[Jason: minor style nits, fixes to selftest, bump of wireguard-tools version]
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Link: https://patch.msgid.link/20250521212707.1767879-5-Jason@zx2c4.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Core & generic-arch updates:
- Add support for dynamic constraints and propagate it to
the Intel driver (Kan Liang)
- Fix & enhance driver-specific throttling support (Kan Liang)
- Record sample last_period before updating on the
x86 and PowerPC platforms (Mark Barnett)
- Make perf_pmu_unregister() usable (Peter Zijlstra)
- Unify perf_event_free_task() / perf_event_exit_task_context()
(Peter Zijlstra)
- Simplify perf_event_release_kernel() and perf_event_free_task()
(Peter Zijlstra)
- Allocate non-contiguous AUX pages by default (Yabin Cui)
Uprobes updates:
- Add support to emulate NOP instructions (Jiri Olsa)
- selftests/bpf: Add 5-byte NOP uprobe trigger benchmark (Jiri Olsa)
x86 Intel PMU enhancements:
- Support Intel Auto Counter Reload [ACR] (Kan Liang)
- Add PMU support for Clearwater Forest (Dapeng Mi)
- Arch-PEBS preparatory changes: (Dapeng Mi)
- Parse CPUID archPerfmonExt leaves for non-hybrid CPUs
- Decouple BTS initialization from PEBS initialization
- Introduce pairs of PEBS static calls
x86 AMD PMU enhancements:
- Use hrtimer for handling overflows in the AMD uncore driver
(Sandipan Das)
- Prevent UMC counters from saturating (Sandipan Das)
Fixes and cleanups:
- Fix put_ctx() ordering (Frederic Weisbecker)
- Fix irq work dereferencing garbage (Frederic Weisbecker)
- Misc fixes and cleanups (Changbin Du, Frederic Weisbecker,
Ian Rogers, Ingo Molnar, Kan Liang, Peter Zijlstra, Qing Wang,
Sandipan Das, Thorsten Blum)
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'perf-core-2025-05-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf events updates from Ingo Molnar:
"Core & generic-arch updates:
- Add support for dynamic constraints and propagate it to the Intel
driver (Kan Liang)
- Fix & enhance driver-specific throttling support (Kan Liang)
- Record sample last_period before updating on the x86 and PowerPC
platforms (Mark Barnett)
- Make perf_pmu_unregister() usable (Peter Zijlstra)
- Unify perf_event_free_task() / perf_event_exit_task_context()
(Peter Zijlstra)
- Simplify perf_event_release_kernel() and perf_event_free_task()
(Peter Zijlstra)
- Allocate non-contiguous AUX pages by default (Yabin Cui)
Uprobes updates:
- Add support to emulate NOP instructions (Jiri Olsa)
- selftests/bpf: Add 5-byte NOP uprobe trigger benchmark (Jiri Olsa)
x86 Intel PMU enhancements:
- Support Intel Auto Counter Reload [ACR] (Kan Liang)
- Add PMU support for Clearwater Forest (Dapeng Mi)
- Arch-PEBS preparatory changes: (Dapeng Mi)
- Parse CPUID archPerfmonExt leaves for non-hybrid CPUs
- Decouple BTS initialization from PEBS initialization
- Introduce pairs of PEBS static calls
x86 AMD PMU enhancements:
- Use hrtimer for handling overflows in the AMD uncore driver
(Sandipan Das)
- Prevent UMC counters from saturating (Sandipan Das)
Fixes and cleanups:
- Fix put_ctx() ordering (Frederic Weisbecker)
- Fix irq work dereferencing garbage (Frederic Weisbecker)
- Misc fixes and cleanups (Changbin Du, Frederic Weisbecker, Ian
Rogers, Ingo Molnar, Kan Liang, Peter Zijlstra, Qing Wang, Sandipan
Das, Thorsten Blum)"
* tag 'perf-core-2025-05-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (60 commits)
perf/headers: Clean up <linux/perf_event.h> a bit
perf/uapi: Clean up <uapi/linux/perf_event.h> a bit
perf/uapi: Fix PERF_RECORD_SAMPLE comments in <uapi/linux/perf_event.h>
mips/perf: Remove driver-specific throttle support
xtensa/perf: Remove driver-specific throttle support
sparc/perf: Remove driver-specific throttle support
loongarch/perf: Remove driver-specific throttle support
csky/perf: Remove driver-specific throttle support
arc/perf: Remove driver-specific throttle support
alpha/perf: Remove driver-specific throttle support
perf/apple_m1: Remove driver-specific throttle support
perf/arm: Remove driver-specific throttle support
s390/perf: Remove driver-specific throttle support
powerpc/perf: Remove driver-specific throttle support
perf/x86/zhaoxin: Remove driver-specific throttle support
perf/x86/amd: Remove driver-specific throttle support
perf/x86/intel: Remove driver-specific throttle support
perf: Only dump the throttle log for the leader
perf: Fix the throttle logic for a group
perf/core: Add the is_event_in_freq_mode() helper to simplify the code
...
Futexes:
- Add support for task local hash maps (Sebastian Andrzej Siewior,
Peter Zijlstra)
- Implement the FUTEX2_NUMA ABI, which feature extends the futex
interface to be NUMA-aware. On NUMA-aware futexes a second u32
word containing the NUMA node is added to after the u32 futex value
word. (Peter Zijlstra)
- Implement the FUTEX2_MPOL ABI, which feature extends the futex
interface to be mempolicy-aware as well, to further refine futex
node mappings and lookups. (Peter Zijlstra)
Locking primitives:
- Misc cleanups (Andy Shevchenko, Borislav Petkov, Colin Ian King,
Ingo Molnar, Nam Cao, Peter Zijlstra)
Lockdep:
- Prevent abuse of lockdep subclasses (Waiman Long)
- Add number of dynamic keys to /proc/lockdep_stats (Waiman Long)
Plus misc cleanups and fixes.
Note that the tree includes the following dependent out-of-subsystem
changes as well:
- rcuref: Provide rcuref_is_dead()
- mm: Add vmalloc_huge_node()
- mm: Add the mmap_read_lock guard to <linux/mmap_lock.h>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'locking-core-2025-05-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking updates from Ingo Molnar:
"Futexes:
- Add support for task local hash maps (Sebastian Andrzej Siewior,
Peter Zijlstra)
- Implement the FUTEX2_NUMA ABI, which feature extends the futex
interface to be NUMA-aware. On NUMA-aware futexes a second u32 word
containing the NUMA node is added to after the u32 futex value word
(Peter Zijlstra)
- Implement the FUTEX2_MPOL ABI, which feature extends the futex
interface to be mempolicy-aware as well, to further refine futex
node mappings and lookups (Peter Zijlstra)
Locking primitives:
- Misc cleanups (Andy Shevchenko, Borislav Petkov, Colin Ian King,
Ingo Molnar, Nam Cao, Peter Zijlstra)
Lockdep:
- Prevent abuse of lockdep subclasses (Waiman Long)
- Add number of dynamic keys to /proc/lockdep_stats (Waiman Long)
Plus misc cleanups and fixes"
* tag 'locking-core-2025-05-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (35 commits)
selftests/futex: Fix spelling mistake "unitiliazed" -> "uninitialized"
futex: Correct the kernedoc return value for futex_wait_setup().
tools headers: Synchronize prctl.h ABI header
futex: Use RCU_INIT_POINTER() in futex_mm_init().
selftests/futex: Use TAP output in futex_numa_mpol
selftests/futex: Use TAP output in futex_priv_hash
futex: Fix kernel-doc comments
futex: Relax the rcu_assign_pointer() assignment of mm->futex_phash in futex_mm_init()
futex: Fix outdated comment in struct restart_block
locking/lockdep: Add number of dynamic keys to /proc/lockdep_stats
locking/lockdep: Prevent abuse of lockdep subclass
locking/lockdep: Move hlock_equal() to the respective #ifdeffery
futex,selftests: Add another FUTEX2_NUMA selftest
selftests/futex: Add futex_numa_mpol
selftests/futex: Add futex_priv_hash
selftests/futex: Build without headers nonsense
tools/perf: Allow to select the number of hash buckets
tools headers: Synchronize prctl.h ABI header
futex: Implement FUTEX2_MPOL
futex: Implement FUTEX2_NUMA
...
Add support for "hardware-wrapped inline encryption keys" to fscrypt.
When enabled on supported platforms, this feature protects file contents
keys from certain attacks, such as cold boot attacks.
This feature uses the block layer support for wrapped keys which was
merged in 6.15. Wrapped key support has existed out-of-tree in Android
for a long time, and it's finally ready for upstream now that there is a
platform on which it works end-to-end with upstream. Specifically,
it works on the Qualcomm SM8650 HDK, using the Qualcomm ICE (Inline
Crypto Engine) and HWKM (Hardware Key Manager). The corresponding
driver support is included in the SCSI tree for 6.16. Validation for
this feature includes two new tests that were already merged into
xfstests (generic/368 and generic/369).
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Merge tag 'fscrypt-for-linus' of git://git.kernel.org/pub/scm/fs/fscrypt/linux
Pull fscrypt update from Eric Biggers:
"Add support for 'hardware-wrapped inline encryption keys' to fscrypt.
When enabled on supported platforms, this feature protects file
contents keys from certain attacks, such as cold boot attacks.
This feature uses the block layer support for wrapped keys which was
merged in 6.15. Wrapped key support has existed out-of-tree in Android
for a long time, and it's finally ready for upstream now that there is
a platform on which it works end-to-end with upstream.
Specifically, it works on the Qualcomm SM8650 HDK, using the Qualcomm
ICE (Inline Crypto Engine) and HWKM (Hardware Key Manager). The
corresponding driver support is included in the SCSI tree for 6.16.
Validation for this feature includes two new tests that were already
merged into xfstests (generic/368 and generic/369)"
* tag 'fscrypt-for-linus' of git://git.kernel.org/pub/scm/fs/fscrypt/linux:
fscrypt: add support for hardware-wrapped keys
* New features:
- Add large stage-2 mapping support for non-protected pKVM guests,
clawing back some performance.
- Add UBSAN support to the standalone EL2 object used in nVHE/hVHE and
protected modes.
- Enable nested virtualisation support on systems that support it
(yes, it has been a long time coming), though it is disabled by
default.
* Improvements, fixes and cleanups:
- Large rework of the way KVM tracks architecture features and links
them with the effects of control bits. This ensures correctness of
emulation (the data is automatically extracted from the published
JSON files), and helps dealing with the evolution of the
architecture.
- Significant changes to the way pKVM tracks ownership of pages,
avoiding page table walks by storing the state in the hypervisor's
vmemmap. This in turn enables the THP support described above.
- New selftest checking the pKVM ownership transition rules
- Fixes for FEAT_MTE_ASYNC being accidentally advertised to guests
even if the host didn't have it.
- Fixes for the address translation emulation, which happened to be
rather buggy in some specific contexts.
- Fixes for the PMU emulation in NV contexts, decoupling PMCR_EL0.N
from the number of counters exposed to a guest and addressing a
number of issues in the process.
- Add a new selftest for the SVE host state being corrupted by a
guest.
- Keep HCR_EL2.xMO set at all times for systems running with the
kernel at EL2, ensuring that the window for interrupts is slightly
bigger, and avoiding a pretty bad erratum on the AmpereOne HW.
- Add workaround for AmpereOne's erratum AC04_CPU_23, which suffers
from a pretty bad case of TLB corruption unless accesses to HCR_EL2
are heavily synchronised.
- Add a per-VM, per-ITS debugfs entry to dump the state of the ITS
tables in a human-friendly fashion.
- and the usual random cleanups.
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Merge tag 'kvmarm-6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD
KVM/arm64 updates for 6.16
* New features:
- Add large stage-2 mapping support for non-protected pKVM guests,
clawing back some performance.
- Add UBSAN support to the standalone EL2 object used in nVHE/hVHE and
protected modes.
- Enable nested virtualisation support on systems that support it
(yes, it has been a long time coming), though it is disabled by
default.
* Improvements, fixes and cleanups:
- Large rework of the way KVM tracks architecture features and links
them with the effects of control bits. This ensures correctness of
emulation (the data is automatically extracted from the published
JSON files), and helps dealing with the evolution of the
architecture.
- Significant changes to the way pKVM tracks ownership of pages,
avoiding page table walks by storing the state in the hypervisor's
vmemmap. This in turn enables the THP support described above.
- New selftest checking the pKVM ownership transition rules
- Fixes for FEAT_MTE_ASYNC being accidentally advertised to guests
even if the host didn't have it.
- Fixes for the address translation emulation, which happened to be
rather buggy in some specific contexts.
- Fixes for the PMU emulation in NV contexts, decoupling PMCR_EL0.N
from the number of counters exposed to a guest and addressing a
number of issues in the process.
- Add a new selftest for the SVE host state being corrupted by a
guest.
- Keep HCR_EL2.xMO set at all times for systems running with the
kernel at EL2, ensuring that the window for interrupts is slightly
bigger, and avoiding a pretty bad erratum on the AmpereOne HW.
- Add workaround for AmpereOne's erratum AC04_CPU_23, which suffers
from a pretty bad case of TLB corruption unless accesses to HCR_EL2
are heavily synchronised.
- Add a per-VM, per-ITS debugfs entry to dump the state of the ITS
tables in a human-friendly fashion.
- and the usual random cleanups.
Signed-off-by: Carlos Maiolino <cem@kernel.org>
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Merge tag 'xfs-merge-6.16' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Pull xfs updates from Carlos Maiolino:
- Atomic writes for XFS
- Remove experimental warnings for pNFS, scrub and parent pointers
* tag 'xfs-merge-6.16' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux: (26 commits)
xfs: add inode to zone caching for data placement
xfs: free the item in xfs_mru_cache_insert on failure
xfs: remove the EXPERIMENTAL warning for pNFS
xfs: remove some EXPERIMENTAL warnings
xfs: Remove deprecated xfs_bufd sysctl parameters
xfs: stop using set_blocksize
xfs: allow sysadmins to specify a maximum atomic write limit at mount time
xfs: update atomic write limits
xfs: add xfs_calc_atomic_write_unit_max()
xfs: add xfs_file_dio_write_atomic()
xfs: commit CoW-based atomic writes atomically
xfs: add large atomic writes checks in xfs_direct_write_iomap_begin()
xfs: add xfs_atomic_write_cow_iomap_begin()
xfs: refine atomic write size check in xfs_file_write_iter()
xfs: refactor xfs_reflink_end_cow_extent()
xfs: allow block allocator to take an alignment hint
xfs: ignore HW which cannot atomic write a single block
xfs: add helpers to compute transaction reservation for finishing intent items
xfs: add helpers to compute log item overhead
xfs: separate out setting buftarg atomic writes limits
...
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Merge tag 'for-6.16/io_uring-20250523' of git://git.kernel.dk/linux
Pull io_uring updates from Jens Axboe:
- Avoid indirect function calls in io-wq for executing and freeing
work.
The design of io-wq is such that it can be a generic mechanism, but
as it's just used by io_uring now, may as well avoid these indirect
calls
- Clean up registered buffers for networking
- Add support for IORING_OP_PIPE. Pretty straight forward, allows
creating pipes with io_uring, particularly useful for having these be
instantiated as direct descriptors
- Clean up the coalescing support fore registered buffers
- Add support for multiple interface queues for zero-copy rx
networking. As this feature was merged for 6.15 it supported just a
single ifq per ring
- Clean up the eventfd support
- Add dma-buf support to zero-copy rx
- Clean up and improving the request draining support
- Clean up provided buffer support, most notably with an eye toward
making the legacy support less intrusive
- Minor fdinfo cleanups, dropping support for dumping what credentials
are registered
- Improve support for overflow CQE handling, getting rid of GFP_ATOMIC
for allocating overflow entries where possible
- Improve detection of cases where io-wq doesn't need to spawn a new
worker unnecessarily
- Various little cleanups
* tag 'for-6.16/io_uring-20250523' of git://git.kernel.dk/linux: (59 commits)
io_uring/cmd: warn on reg buf imports by ineligible cmds
io_uring/io-wq: only create a new worker if it can make progress
io_uring/io-wq: ignore non-busy worker going to sleep
io_uring/io-wq: move hash helpers to the top
trace/io_uring: fix io_uring_local_work_run ctx documentation
io_uring: finish IOU_OK -> IOU_COMPLETE transition
io_uring: add new helpers for posting overflows
io_uring: pass in struct io_big_cqe to io_alloc_ocqe()
io_uring: make io_alloc_ocqe() take a struct io_cqe pointer
io_uring: split alloc and add of overflow
io_uring: open code io_req_cqe_overflow()
io_uring/fdinfo: get rid of dumping credentials
io_uring/fdinfo: only compile if CONFIG_PROC_FS is set
io_uring/kbuf: unify legacy buf provision and removal
io_uring/kbuf: refactor __io_remove_buffers
io_uring/kbuf: don't compute size twice on prep
io_uring/kbuf: drop extra vars in io_register_pbuf_ring
io_uring/kbuf: use mem_is_zero()
io_uring/kbuf: account ring io_buffer_list memory
io_uring: drain based on allocates reqs
...
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Merge tag 'for-6.16/block-20250523' of git://git.kernel.dk/linux
Pull block updates from Jens Axboe:
- ublk updates:
- Add support for updating the size of a ublk instance
- Zero-copy improvements
- Auto-registering of buffers for zero-copy
- Series simplifying and improving GET_DATA and request lookup
- Series adding quiesce support
- Lots of selftests additions
- Various cleanups
- NVMe updates via Christoph:
- add per-node DMA pools and use them for PRP/SGL allocations
(Caleb Sander Mateos, Keith Busch)
- nvme-fcloop refcounting fixes (Daniel Wagner)
- support delayed removal of the multipath node and optionally
support the multipath node for private namespaces (Nilay Shroff)
- support shared CQs in the PCI endpoint target code (Wilfred
Mallawa)
- support admin-queue only authentication (Hannes Reinecke)
- use the crc32c library instead of the crypto API (Eric Biggers)
- misc cleanups (Christoph Hellwig, Marcelo Moreira, Hannes
Reinecke, Leon Romanovsky, Gustavo A. R. Silva)
- MD updates via Yu:
- Fix that normal IO can be starved by sync IO, found by mkfs on
newly created large raid5, with some clean up patches for bdev
inflight counters
- Clean up brd, getting rid of atomic kmaps and bvec poking
- Add loop driver specifically for zoned IO testing
- Eliminate blk-rq-qos calls with a static key, if not enabled
- Improve hctx locking for when a plug has IO for multiple queues
pending
- Remove block layer bouncing support, which in turn means we can
remove the per-node bounce stat as well
- Improve blk-throttle support
- Improve delay support for blk-throttle
- Improve brd discard support
- Unify IO scheduler switching. This should also fix a bunch of lockdep
warnings we've been seeing, after enabling lockdep support for queue
freezing/unfreezeing
- Add support for block write streams via FDP (flexible data placement)
on NVMe
- Add a bunch of block helpers, facilitating the removal of a bunch of
duplicated boilerplate code
- Remove obsolete BLK_MQ pci and virtio Kconfig options
- Add atomic/untorn write support to blktrace
- Various little cleanups and fixes
* tag 'for-6.16/block-20250523' of git://git.kernel.dk/linux: (186 commits)
selftests: ublk: add test for UBLK_F_QUIESCE
ublk: add feature UBLK_F_QUIESCE
selftests: ublk: add test case for UBLK_U_CMD_UPDATE_SIZE
traceevent/block: Add REQ_ATOMIC flag to block trace events
ublk: run auto buf unregisgering in same io_ring_ctx with registering
io_uring: add helper io_uring_cmd_ctx_handle()
ublk: remove io argument from ublk_auto_buf_reg_fallback()
ublk: handle ublk_set_auto_buf_reg() failure correctly in ublk_fetch()
selftests: ublk: add test for covering UBLK_AUTO_BUF_REG_FALLBACK
selftests: ublk: support UBLK_F_AUTO_BUF_REG
ublk: support UBLK_AUTO_BUF_REG_FALLBACK
ublk: register buffer to local io_uring with provided buf index via UBLK_F_AUTO_BUF_REG
ublk: prepare for supporting to register request buffer automatically
ublk: convert to refcount_t
selftests: ublk: make IO & device removal test more stressful
nvme: rename nvme_mpath_shutdown_disk to nvme_mpath_remove_disk
nvme: introduce multipath_always_on module param
nvme-multipath: introduce delayed removal of the multipath head node
nvme-pci: derive and better document max segments limits
nvme-pci: use struct_size for allocation struct nvme_dev
...
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Merge tag 'vfs-6.16-rc1.coredump' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull coredump updates from Christian Brauner:
"This adds support for sending coredumps over an AF_UNIX socket. It
also makes (implicit) use of the new SO_PEERPIDFD ability to hand out
pidfds for reaped peer tasks
The new coredump socket will allow userspace to not have to rely on
usermode helpers for processing coredumps and provides a saf way to
handle them instead of relying on super privileged coredumping helpers
This will also be significantly more lightweight since the kernel
doens't have to do a fork()+exec() for each crashing process to spawn
a usermodehelper. Instead the kernel just connects to the AF_UNIX
socket and userspace can process it concurrently however it sees fit.
Support for userspace is incoming starting with systemd-coredump
There's more work coming in that direction next cycle. The rest below
goes into some details and background
Coredumping currently supports two modes:
(1) Dumping directly into a file somewhere on the filesystem.
(2) Dumping into a pipe connected to a usermode helper process
spawned as a child of the system_unbound_wq or kthreadd
For simplicity I'm mostly ignoring (1). There's probably still some
users of (1) out there but processing coredumps in this way can be
considered adventurous especially in the face of set*id binaries
The most common option should be (2) by now. It works by allowing
userspace to put a string into /proc/sys/kernel/core_pattern like:
|/usr/lib/systemd/systemd-coredump %P %u %g %s %t %c %h
The "|" at the beginning indicates to the kernel that a pipe must be
used. The path following the pipe indicator is a path to a binary that
will be spawned as a usermode helper process. Any additional
parameters pass information about the task that is generating the
coredump to the binary that processes the coredump
In the example the core_pattern shown causes the kernel to spawn
systemd-coredump as a usermode helper. There's various conceptual
consequences of this (non-exhaustive list):
- systemd-coredump is spawned with file descriptor number 0 (stdin)
connected to the read-end of the pipe. All other file descriptors
are closed. That specifically includes 1 (stdout) and 2 (stderr).
This has already caused bugs because userspace assumed that this
cannot happen (Whether or not this is a sane assumption is
irrelevant)
- systemd-coredump will be spawned as a child of system_unbound_wq.
So it is not a child of any userspace process and specifically not
a child of PID 1. It cannot be waited upon and is in a weird hybrid
upcall which are difficult for userspace to control correctly
- systemd-coredump is spawned with full kernel privileges. This
necessitates all kinds of weird privilege dropping excercises in
userspace to make this safe
- A new usermode helper has to be spawned for each crashing process
This adds a new mode:
(3) Dumping into an AF_UNIX socket
Userspace can set /proc/sys/kernel/core_pattern to:
@/path/to/coredump.socket
The "@" at the beginning indicates to the kernel that an AF_UNIX
coredump socket will be used to process coredumps
The coredump socket must be located in the initial mount namespace.
When a task coredumps it opens a client socket in the initial network
namespace and connects to the coredump socket:
- The coredump server uses SO_PEERPIDFD to get a stable handle on the
connected crashing task. The retrieved pidfd will provide a stable
reference even if the crashing task gets SIGKILLed while generating
the coredump. That is a huge attack vector right now
- By setting core_pipe_limit non-zero userspace can guarantee that
the crashing task cannot be reaped behind it's back and thus
process all necessary information in /proc/<pid>. The SO_PEERPIDFD
can be used to detect whether /proc/<pid> still refers to the same
process
The core_pipe_limit isn't used to rate-limit connections to the
socket. This can simply be done via AF_UNIX socket directly
- The pidfd for the crashing task will contain information how the
task coredumps. The PIDFD_GET_INFO ioctl gained a new flag
PIDFD_INFO_COREDUMP which can be used to retreive the coredump
information
If the coredump gets a new coredump client connection the kernel
guarantees that PIDFD_INFO_COREDUMP information is available.
Currently the following information is provided in the new
@coredump_mask extension to struct pidfd_info:
* PIDFD_COREDUMPED is raised if the task did actually coredump
* PIDFD_COREDUMP_SKIP is raised if the task skipped coredumping
(e.g., undumpable)
* PIDFD_COREDUMP_USER is raised if this is a regular coredump and
doesn't need special care by the coredump server
* PIDFD_COREDUMP_ROOT is raised if the generated coredump should
be treated as sensitive and the coredump server should restrict
access to the generated coredump to sufficiently privileged
users"
* tag 'vfs-6.16-rc1.coredump' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
mips, net: ensure that SOCK_COREDUMP is defined
selftests/coredump: add tests for AF_UNIX coredumps
selftests/pidfd: add PIDFD_INFO_COREDUMP infrastructure
coredump: validate socket name as it is written
coredump: show supported coredump modes
pidfs, coredump: add PIDFD_INFO_COREDUMP
coredump: add coredump socket
coredump: reflow dump helpers a little
coredump: massage do_coredump()
coredump: massage format_corename()
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Merge tag 'vfs-6.16-rc1.pidfs' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull pidfs updates from Christian Brauner:
"Features:
- Allow handing out pidfds for reaped tasks for AF_UNIX SO_PEERPIDFD
socket option
SO_PEERPIDFD is a socket option that allows to retrieve a pidfd for
the process that called connect() or listen(). This is heavily used
to safely authenticate clients in userspace avoiding security bugs
due to pid recycling races (dbus, polkit, systemd, etc.)
SO_PEERPIDFD currently doesn't support handing out pidfds if the
sk->sk_peer_pid thread-group leader has already been reaped. In
this case it currently returns EINVAL. Userspace still wants to get
a pidfd for a reaped process to have a stable handle it can pass
on. This is especially useful now that it is possible to retrieve
exit information through a pidfd via the PIDFD_GET_INFO ioctl()'s
PIDFD_INFO_EXIT flag
Another summary has been provided by David Rheinsberg:
> A pidfd can outlive the task it refers to, and thus user-space
> must already be prepared that the task underlying a pidfd is
> gone at the time they get their hands on the pidfd. For
> instance, resolving the pidfd to a PID via the fdinfo must be
> prepared to read `-1`.
>
> Despite user-space knowing that a pidfd might be stale, several
> kernel APIs currently add another layer that checks for this. In
> particular, SO_PEERPIDFD returns `EINVAL` if the peer-task was
> already reaped, but returns a stale pidfd if the task is reaped
> immediately after the respective alive-check.
>
> This has the unfortunate effect that user-space now has two ways
> to check for the exact same scenario: A syscall might return
> EINVAL/ESRCH/... *or* the pidfd might be stale, even though
> there is no particular reason to distinguish both cases. This
> also propagates through user-space APIs, which pass on pidfds.
> They must be prepared to pass on `-1` *or* the pidfd, because
> there is no guaranteed way to get a stale pidfd from the kernel.
>
> Userspace must already deal with a pidfd referring to a reaped
> task as the task may exit and get reaped at any time will there
> are still many pidfds referring to it
In order to allow handing out reaped pidfd SO_PEERPIDFD needs to
ensure that PIDFD_INFO_EXIT information is available whenever a
pidfd for a reaped task is created by PIDFD_INFO_EXIT. The uapi
promises that reaped pidfds are only handed out if it is guaranteed
that the caller sees the exit information:
TEST_F(pidfd_info, success_reaped)
{
struct pidfd_info info = {
.mask = PIDFD_INFO_CGROUPID | PIDFD_INFO_EXIT,
};
/*
* Process has already been reaped and PIDFD_INFO_EXIT been set.
* Verify that we can retrieve the exit status of the process.
*/
ASSERT_EQ(ioctl(self->child_pidfd4, PIDFD_GET_INFO, &info), 0);
ASSERT_FALSE(!!(info.mask & PIDFD_INFO_CREDS));
ASSERT_TRUE(!!(info.mask & PIDFD_INFO_EXIT));
ASSERT_TRUE(WIFEXITED(info.exit_code));
ASSERT_EQ(WEXITSTATUS(info.exit_code), 0);
}
To hand out pidfds for reaped processes we thus allocate a pidfs
entry for the relevant sk->sk_peer_pid at the time the
sk->sk_peer_pid is stashed and drop it when the socket is
destroyed. This guarantees that exit information will always be
recorded for the sk->sk_peer_pid task and we can hand out pidfds
for reaped processes
- Hand a pidfd to the coredump usermode helper process
Give userspace a way to instruct the kernel to install a pidfd for
the crashing process into the process started as a usermode helper.
There's still tricky race-windows that cannot be easily or
sometimes not closed at all by userspace. There's various ways like
looking at the start time of a process to make sure that the
usermode helper process is started after the crashing process but
it's all very very brittle and fraught with peril
The crashed-but-not-reaped process can be killed by userspace
before coredump processing programs like systemd-coredump have had
time to manually open a PIDFD from the PID the kernel provides
them, which means they can be tricked into reading from an
arbitrary process, and they run with full privileges as they are
usermode helper processes
Even if that specific race-window wouldn't exist it's still the
safest and cleanest way to let the kernel provide the pidfd
directly instead of requiring userspace to do it manually. In
parallel with this commit we already have systemd adding support
for this in [1]
When the usermode helper process is forked we install a pidfd file
descriptor three into the usermode helper's file descriptor table
so it's available to the exec'd program
Since usermode helpers are either children of the system_unbound_wq
workqueue or kthreadd we know that the file descriptor table is
empty and can thus always use three as the file descriptor number
Note, that we'll install a pidfd for the thread-group leader even
if a subthread is calling do_coredump(). We know that task linkage
hasn't been removed yet and even if this @current isn't the actual
thread-group leader we know that the thread-group leader cannot be
reaped until
@current has exited
- Allow telling when a task has not been found from finding the wrong
task when creating a pidfd
We currently report EINVAL whenever a struct pid has no tasked
attached anymore thereby conflating two concepts:
(1) The task has already been reaped
(2) The caller requested a pidfd for a thread-group leader but the
pid actually references a struct pid that isn't used as a
thread-group leader
This is causing issues for non-threaded workloads as in where they
expect ESRCH to be reported, not EINVAL
So allow userspace to reliably distinguish between (1) and (2)
- Make it possible to detect when a pidfs entry would outlive the
struct pid it pinned
- Add a range of new selftests
Cleanups:
- Remove unneeded NULL check from pidfd_prepare() for passed struct
pid
- Avoid pointless reference count bump during release_task()
Fixes:
- Various fixes to the pidfd and coredump selftests
- Fix error handling for replace_fd() when spawning coredump usermode
helper"
* tag 'vfs-6.16-rc1.pidfs' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
pidfs: detect refcount bugs
coredump: hand a pidfd to the usermode coredump helper
coredump: fix error handling for replace_fd()
pidfs: move O_RDWR into pidfs_alloc_file()
selftests: coredump: Raise timeout to 2 minutes
selftests: coredump: Fix test failure for slow machines
selftests: coredump: Properly initialize pointer
net, pidfs: enable handing out pidfds for reaped sk->sk_peer_pid
pidfs: get rid of __pidfd_prepare()
net, pidfs: prepare for handing out pidfds for reaped sk->sk_peer_pid
pidfs: register pid in pidfs
net, pidfd: report EINVAL for ESRCH
release_task: kill the no longer needed get/put_pid(thread_pid)
pidfs: ensure consistent ENOENT/ESRCH reporting
exit: move wake_up_all() pidfd waiters into __unhash_process()
selftest/pidfd: add test for thread-group leader pidfd open for thread
pidfd: improve uapi when task isn't found
pidfd: remove unneeded NULL check from pidfd_prepare()
selftests/pidfd: adapt to recent changes
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Merge tag 'nf-next-25-05-23' of git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf-next
Pablo Neira Ayuso says:
====================
Netfilter updates for net-next
The following batch contains Netfilter updates for net-next,
specifically 26 patches: 5 patches adding/updating selftests,
4 fixes, 3 PREEMPT_RT fixes, and 14 patches to enhance nf_tables):
1) Improve selftest coverage for pipapo 4 bit group format, from
Florian Westphal.
2) Fix incorrect dependencies when compiling a kernel without
legacy ip{6}tables support, also from Florian.
3) Two patches to fix nft_fib vrf issues, including selftest updates
to improve coverage, also from Florian Westphal.
4) Fix incorrect nesting in nft_tunnel's GENEVE support, from
Fernando F. Mancera.
5) Three patches to fix PREEMPT_RT issues with nf_dup infrastructure
and nft_inner to match in inner headers, from Sebastian Andrzej Siewior.
6) Integrate conntrack information into nft trace infrastructure,
from Florian Westphal.
7) A series of 13 patches to allow to specify wildcard netdevice in
netdev basechain and flowtables, eg.
table netdev filter {
chain ingress {
type filter hook ingress devices = { eth0, eth1, vlan* } priority 0; policy accept;
}
}
This also allows for runtime hook registration on NETDEV_{UN}REGISTER
event, from Phil Sutter.
netfilter pull request 25-05-23
* tag 'nf-next-25-05-23' of git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf-next: (26 commits)
selftests: netfilter: Torture nftables netdev hooks
netfilter: nf_tables: Add notifications for hook changes
netfilter: nf_tables: Support wildcard netdev hook specs
netfilter: nf_tables: Sort labels in nft_netdev_hook_alloc()
netfilter: nf_tables: Handle NETDEV_CHANGENAME events
netfilter: nf_tables: Wrap netdev notifiers
netfilter: nf_tables: Respect NETDEV_REGISTER events
netfilter: nf_tables: Prepare for handling NETDEV_REGISTER events
netfilter: nf_tables: Have a list of nf_hook_ops in nft_hook
netfilter: nf_tables: Pass nf_hook_ops to nft_unregister_flowtable_hook()
netfilter: nf_tables: Introduce nft_register_flowtable_ops()
netfilter: nf_tables: Introduce nft_hook_find_ops{,_rcu}()
netfilter: nf_tables: Introduce functions freeing nft_hook objects
netfilter: nf_tables: add packets conntrack state to debug trace info
netfilter: conntrack: make nf_conntrack_id callable without a module dependency
netfilter: nf_dup_netdev: Move the recursion counter struct netdev_xmit
netfilter: nft_inner: Use nested-BH locking for nft_pcpu_tun_ctx
netfilter: nf_dup{4, 6}: Move duplication check to task_struct
netfilter: nft_tunnel: fix geneve_opt dump
selftests: netfilter: nft_fib.sh: add type and oif tests with and without VRFs
...
====================
Link: https://patch.msgid.link/20250523132712.458507-1-pablo@netfilter.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Add feature UBLK_F_QUIESCE, which adds control command `UBLK_U_CMD_QUIESCE_DEV`
for quiescing device, then device state can become `UBLK_S_DEV_QUIESCED`
or `UBLK_S_DEV_FAIL_IO` finally from ublk_ch_release() with ublk server
cooperation.
This feature can help to support to upgrade ublk server application by
shutting down ublk server gracefully, meantime keep ublk block device
persistent during the upgrading period.
The feature is only available for UBLK_F_USER_RECOVERY.
Suggested-by: Yoav Cohen <yoav@nvidia.com>
Link: https://lore.kernel.org/linux-block/DM4PR12MB632807AB7CDCE77D1E5AB7D0A9B92@DM4PR12MB6328.namprd12.prod.outlook.com/
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Link: https://lore.kernel.org/r/20250522163523.406289-3-ming.lei@redhat.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Notify user space if netdev hooks are updated due to netdev add/remove
events. Send minimal notification messages by introducing
NFT_MSG_NEWDEV/DELDEV message types describing a single device only.
Upon NETDEV_CHANGENAME, the callback has no information about the
interface's old name. To provide a clear message to user space, include
the hook's stored interface name in the notification.
Signed-off-by: Phil Sutter <phil@nwl.cc>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Add the minimal relevant info needed for userspace ("nftables monitor
trace") to provide the conntrack view of the packet:
- state (new, related, established)
- direction (original, reply)
- status (e.g., if connection is subject to dnat)
- id (allows to query ctnetlink for remaining conntrack state info)
Example:
trace id a62 inet filter PRE_RAW packet: iif "enp0s3" ether [..]
[..]
trace id a62 inet filter PRE_MANGLE conntrack: ct direction original ct state new ct id 32
trace id a62 inet filter PRE_MANGLE packet: [..]
[..]
trace id a62 inet filter IN conntrack: ct direction original ct state new ct status dnat-done ct id 32
[..]
In this case one can see that while NAT is active, the new connection
isn't subject to a translation.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* kvm-arm64/nv-nv:
: .
: Flick the switch on the NV support by adding the missing piece
: in the form of the VNCR page management. From the cover letter:
:
: "This is probably the most interesting bit of the whole NV adventure.
: So far, everything else has been a walk in the park, but this one is
: where the real fun takes place.
:
: With FEAT_NV2, most of the NV support revolves around tricking a guest
: into accessing memory while it tries to access system registers. The
: hypervisor's job is to handle the context switch of the actual
: registers with the state in memory as needed."
: .
KVM: arm64: nv: Release faulted-in VNCR page from mmu_lock critical section
KVM: arm64: nv: Handle TLBI S1E2 for VNCR invalidation with mmu_lock held
KVM: arm64: nv: Hold mmu_lock when invalidating VNCR SW-TLB before translating
KVM: arm64: Document NV caps and vcpu flags
KVM: arm64: Allow userspace to request KVM_ARM_VCPU_EL2*
KVM: arm64: nv: Remove dead code from ERET handling
KVM: arm64: nv: Plumb TLBI S1E2 into system instruction dispatch
KVM: arm64: nv: Add S1 TLB invalidation primitive for VNCR_EL2
KVM: arm64: nv: Program host's VNCR_EL2 to the fixmap address
KVM: arm64: nv: Handle VNCR_EL2 invalidation from MMU notifiers
KVM: arm64: nv: Handle mapping of VNCR_EL2 at EL2
KVM: arm64: nv: Handle VNCR_EL2-triggered faults
KVM: arm64: nv: Add userspace and guest handling of VNCR_EL2
KVM: arm64: nv: Add pseudo-TLB backing VNCR_EL2
KVM: arm64: nv: Don't adjust PSTATE.M when L2 is nesting
KVM: arm64: nv: Move TLBI range decoding to a helper
KVM: arm64: nv: Snapshot S1 ASID tagging information during walk
KVM: arm64: nv: Extract translation helper from the AT code
KVM: arm64: nv: Allocate VNCR page when required
arm64: sysreg: Add layout for VNCR_EL2
Signed-off-by: Marc Zyngier <maz@kernel.org>
UBLK_F_AUTO_BUF_REG requires that the buffer registered automatically
is unregistered in same `io_ring_ctx`, so check it explicitly.
Document this requirement for UBLK_F_AUTO_BUF_REG.
Drop WARN_ON_ONCE() which is triggered from userspace code path.
Fixes: 99c1e4eb6a ("ublk: register buffer to local io_uring with provided buf index via UBLK_F_AUTO_BUF_REG")
Reported-by: Caleb Sander Mateos <csander@purestorage.com>
Reviewed-by: Caleb Sander Mateos <csander@purestorage.com>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Link: https://lore.kernel.org/r/20250522152043.399824-3-ming.lei@redhat.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Multi-PTP source support within a network topology has been merged,
but the hardware timestamp source is not yet exposed to users.
Currently, users only see the PTP index, which does not indicate
whether the timestamp comes from a PHY or a MAC.
Add support for reporting the hwtstamp source using a
hwtstamp-source field, alongside hwtstamp-phyindex, to describe
the origin of the hardware timestamp.
Remove HWTSTAMP_SOURCE_UNSPEC enum value as it is not used at all.
Signed-off-by: Kory Maincent <kory.maincent@bootlin.com>
Link: https://patch.msgid.link/20250519-feature_ptp_source-v4-1-5d10e19a0265@bootlin.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
When applying a recent commit to the <uapi/linux/perf_event.h>
header I noticed that we have accumulated quite a bit of
historic noise in this header, so do a bit of spring cleaning:
- Define bitfields in a vertically aligned fashion, like
perf_event_mmap_page::capabilities already does. This
makes it easier to see the distribution and sizing of
bits within a word, at a glance. The following is much
more readable:
__u64 cap_bit0 : 1,
cap_bit0_is_deprecated : 1,
cap_user_rdpmc : 1,
cap_user_time : 1,
cap_user_time_zero : 1,
cap_user_time_short : 1,
cap_____res : 58;
Than:
__u64 cap_bit0:1,
cap_bit0_is_deprecated:1,
cap_user_rdpmc:1,
cap_user_time:1,
cap_user_time_zero:1,
cap_user_time_short:1,
cap_____res:58;
So convert all bitfield definitions from the latter style to the
former style.
- Fix typos and grammar
- Fix capitalization
- Remove whitespace noise
- Harmonize the definitions of various generations and groups of
PERF_MEM_ ABI values.
- Vertically align all definitions and assignments to the same
column (48), as the first definition (enum perf_type_id),
throughout the entire header.
- And in general make the code and comments to be more in sync
with each other and to be more readable overall.
No change in functionality.
Copy the changes over to tools/include/uapi/linux/perf_event.h.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Ian Rogers <irogers@google.com>
Link: https://lore.kernel.org/r/20250521221529.2547099-1-irogers@google.com
AAUX data for PERF_SAMPLE_AUX appears last. PERF_SAMPLE_CGROUP is
missing from the comment.
This makes the <uapi/linux/perf_event.h> comment match that in the
perf_event_open man page.
Signed-off-by: Ian Rogers <irogers@google.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: James Clark <james.clark@linaro.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: linux-perf-users@vger.kernel.org
Link: https://lore.kernel.org/r/20250521221529.2547099-1-irogers@google.com
Extend the PIDFD_INFO_COREDUMP ioctl() with the new PIDFD_INFO_COREDUMP
mask flag. This adds the @coredump_mask field to struct pidfd_info.
When a task coredumps the kernel will provide the following information
to userspace in @coredump_mask:
* PIDFD_COREDUMPED is raised if the task did actually coredump.
* PIDFD_COREDUMP_SKIP is raised if the task skipped coredumping (e.g.,
undumpable).
* PIDFD_COREDUMP_USER is raised if this is a regular coredump and
doesn't need special care by the coredump server.
* PIDFD_COREDUMP_ROOT is raised if the generated coredump should be
treated as sensitive and the coredump server should restrict to the
generated coredump to sufficiently privileged users.
The kernel guarantees that by the time the connection is made the all
PIDFD_INFO_COREDUMP info is available.
Link: https://lore.kernel.org/20250516-work-coredump-socket-v8-5-664f3caf2516@kernel.org
Acked-by: Luca Boccassi <luca.boccassi@gmail.com>
Reviewed-by: Alexander Mikhalitsyn <aleksandr.mikhalitsyn@canonical.com>
Reviewed-by: Jann Horn <jannh@google.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>
The console dimension and cursor position are available through the
/dev/vcsa interface already. However the /dev/vcsa header format uses
single-byte fields therefore those values are clamped to 255.
As surprizing as this may seem, some people do use 240-column 67-row
screens (a 1920x1080 monitor with 8x16 pixel fonts) which is getting
close to the limit. Monitors with higher resolution are not uncommon
these days (3840x2160 producing a 480x135 character display) and it is
just a matter of time before someone with, say, a braille display using
the Linux VT console and BRLTTY on such a screen reports a bug about
missing and oddly misaligned screen content.
Let's add VT_GETCONSIZECSRPOS for the retrieval of console size and cursor
position without byte-sized limitations. The actual console size limit as
encoded in vt.c is 32767x32767 so using a short here is appropriate. Then
this can be used to get the cursor position when /dev/vcsa reports 255.
The screen dimension may already be obtained using TIOCGWINSZ and adding
the same information to VT_GETCONSIZECSRPOS might be redundant. However
applications that care about cursor position also care about display
size and having 2 separate system calls to obtain them separately is
wasteful. Also, the cursor position can be queried by writing "\e[6n" to
a tty and reading back the result but that may be done only by the actual
application using that tty and not a sideline observer.
Signed-off-by: Nicolas Pitre <npitre@baylibre.com>
Link: https://lore.kernel.org/r/20250520171851.1219676-3-nico@fluxnic.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This is comprised of 3 aspects:
- Take note of when applications advertise bracketed paste support via
"\e[?2004h" and "\e[?2004l".
- Insert bracketed paste markers ("\e[200~" and "\e[201~") around pasted
content in paste_selection() when bracketed paste is active.
- Add TIOCL_GETBRACKETEDPASTE to return bracketed paste status so user
space daemons implementing cut-and-paste functionality (e.g. gpm,
BRLTTY) may know when to insert bracketed paste markers.
Link: https://en.wikipedia.org/wiki/Bracketed-paste
Signed-off-by: Nicolas Pitre <npitre@baylibre.com>
Reviewed-by: Jiri Slaby <jirislaby@kernel.org>
Link: https://lore.kernel.org/r/20250520171851.1219676-2-nico@fluxnic.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Problem
========
commit 658eb5ab91 ("delayacct: add delay max to record delay peak")
- adding more fields
commit f65c64f311 ("delayacct: add delay min to record delay peak")
- adding more fields
commit b016d08737 ("taskstats: modify taskstats version")
- version bump to 15
Since version 15 (TASKSTATS_VERSION=15) the new layout of the structure
adds fields in the middle of the structure, rendering all old software
incompatible with newer kernels and software compiled against the new
kernel headers incompatible with older kernels.
Solution
=========
move delay max and delay min to the end of taskstat, and bump
the version to 16 after the change
[wang.yaxin@zte.com.cn: adjust indentation]
Link: https://lkml.kernel.org/r/202505192131489882NSciXV4EGd8zzjLuwoOK@zte.com.cn
Link: https://lkml.kernel.org/r/20250510155413259V4JNRXxukdDgzsaL0Fo6a@zte.com.cn
Fixes: f65c64f311 ("delayacct: add delay min to record delay peak")
Signed-off-by: Wang Yaxin <wang.yaxin@zte.com.cn>
Signed-off-by: xu xin <xu.xin16@zte.com.cn>
Signed-off-by: Kun Jiang <jiang.kun2@zte.com.cn>
Reviewed-by: Yang Yang <yang.yang29@zte.com.cn>
Cc: Balbir Singh <bsingharora@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Petr Machata