first steps in trying to make channels properly reconnect.
* add cifs_ses_find_chan() function to find the enclosing cifs_chan
struct it belongs to
* while we have the session lock and are redoing negprot and
sess.setup in smb2_reconnect() redo the binding of channels.
Signed-off-by: Aurelien Aptel <aaptel@suse.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Add a cifs_chan pointer in struct cifs_ses that points to the channel
currently being bound if ses->binding is true.
Previously it was always the channel past the established count.
This will make reconnecting (and rebinding) a channel easier later on.
Signed-off-by: Aurelien Aptel <aaptel@suse.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Remove static checker warning pointed out by Dan Carpenter:
The patch feeaec621c09: "cifs: multichannel: move channel selection
above transport layer" from Apr 24, 2020, leads to the following
static checker warning:
fs/cifs/smb2pdu.c:149 smb2_hdr_assemble()
error: we previously assumed 'tcon->ses' could be null (see line 133)
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
CC: Aurelien Aptel <aptel@suse.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Move the channel (TCP_Server_Info*) selection from the tranport
layer to higher in the call stack so that:
- credit handling is done with the server that will actually be used
to send.
* ->wait_mtu_credit
* ->set_credits / set_credits
* ->add_credits / add_credits
* add_credits_and_wake_if
- potential reconnection (smb2_reconnect) done when initializing a
request is checked and done with the server that will actually be
used to send.
To do this:
- remove the cifs_pick_channel() call out of compound_send_recv()
- select channel and pass it down by adding a cifs_pick_channel(ses)
call in:
- smb311_posix_mkdir
- SMB2_open
- SMB2_ioctl
- __SMB2_close
- query_info
- SMB2_change_notify
- SMB2_flush
- smb2_async_readv (if none provided in context param)
- SMB2_read (if none provided in context param)
- smb2_async_writev (if none provided in context param)
- SMB2_write (if none provided in context param)
- SMB2_query_directory
- send_set_info
- SMB2_oplock_break
- SMB311_posix_qfs_info
- SMB2_QFS_info
- SMB2_QFS_attr
- smb2_lockv
- SMB2_lease_break
- smb2_compound_op
- smb2_set_ea
- smb2_ioctl_query_info
- smb2_query_dir_first
- smb2_query_info_comound
- smb2_query_symlink
- cifs_writepages
- cifs_write_from_iter
- cifs_send_async_read
- cifs_read
- cifs_readpages
- add TCP_Server_Info *server param argument to:
- cifs_send_recv
- compound_send_recv
- SMB2_open_init
- SMB2_query_info_init
- SMB2_set_info_init
- SMB2_close_init
- SMB2_ioctl_init
- smb2_iotcl_req_init
- SMB2_query_directory_init
- SMB2_notify_init
- SMB2_flush_init
- build_qfs_info_req
- smb2_hdr_assemble
- smb2_reconnect
- fill_small_buf
- smb2_plain_req_init
- __smb2_plain_req_init
The read/write codepath is different than the rest as it is using
pages, io iterators and async calls. To deal with those we add a
server pointer in the cifs_writedata/cifs_readdata/cifs_io_parms
context struct and set it in:
- cifs_writepages (wdata)
- cifs_write_from_iter (wdata)
- cifs_readpages (rdata)
- cifs_send_async_read (rdata)
The [rw]data->server pointer is eventually copied to
cifs_io_parms->server to pass it down to SMB2_read/SMB2_write.
If SMB2_read/SMB2_write is called from a different place that doesn't
set the server field it will pick a channel.
Some places do not pick a channel and just use ses->server or
cifs_ses_server(ses). All cifs_ses_server(ses) calls are in codepaths
involving negprot/sess.setup.
- SMB2_negotiate (binding channel)
- SMB2_sess_alloc_buffer (binding channel)
- SMB2_echo (uses provided one)
- SMB2_logoff (uses master)
- SMB2_tdis (uses master)
(list not exhaustive)
Signed-off-by: Aurelien Aptel <aaptel@suse.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
SMB2_read/SMB2_write check and use cifs_io_parms->server, which might
be uninitialized memory.
This change makes all callers zero-initialize the struct.
Signed-off-by: Aurelien Aptel <aaptel@suse.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Currently the end user is unaware with what sec type the
cifs share is mounted if no sec=<type> option is parsed.
With this patch one can easily check from DebugData.
Example:
1) Name: x.x.x.x Uses: 1 Capability: 0x8001f3fc Session Status: 1 Security type: RawNTLMSSP
Signed-off-by: Kenneth D'souza <kdsouza@redhat.com>
Signed-off-by: Roberto Bergantinos Corpas <rbergant@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Acked-by: Aurelien Aptel <aaptel@suse.com>
In case a compressed file is getting overwritten, the current retry
logic doesn't include the current page to be retried now as it sets
the new start index as 0 and new end index as writeback_index - 1.
This causes the corresponding cluster to be uncompressed and written
as normal pages without compression. Fix this by allowing writeback to
be retried for the current page as well (in case of compressed page
getting retried due to index mismatch with cluster index). So that
this cluster can be written compressed in case of overwrite.
Also, align f2fs_write_cache_pages() according to the change -
<64081362e8ff>("mm/page-writeback.c: fix range_cyclic writeback vs
writepages deadlock").
Signed-off-by: Sahitya Tummala <stummala@codeaurora.org>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Consolidate the code and correct the comments to show that the actions
taken to update existing mappings to disable or enable dirty logging
are not necessary when creating, moving, or deleting a memslot.
Signed-off-by: Anthony Yznaga <anthony.yznaga@oracle.com>
Message-Id: <1591128450-11977-4-git-send-email-anthony.yznaga@oracle.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
On large memory guests it has been observed that creating a memslot
for a very large range can take noticeable amount of time.
Investigation showed that the time is spent walking the rmaps to update
existing sptes to remove write access or set/clear dirty bits to support
dirty logging. These rmap walks are unnecessary when creating or moving
a memslot. A newly created memslot will not have any existing mappings,
and the existing mappings of a moved memslot will have been invalidated
and flushed. Any mappings established once the new/moved memslot becomes
visible will be set using the properties of the new slot.
Signed-off-by: Anthony Yznaga <anthony.yznaga@oracle.com>
Message-Id: <1591128450-11977-3-git-send-email-anthony.yznaga@oracle.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
There's no write access to remove. An existing memslot cannot be updated
to set or clear KVM_MEM_READONLY, and any mappings established in a newly
created or moved read-only memslot will already be read-only.
Signed-off-by: Anthony Yznaga <anthony.yznaga@oracle.com>
Message-Id: <1591128450-11977-2-git-send-email-anthony.yznaga@oracle.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Pull livepatching updates from Jiri Kosina:
- simplifications and improvements for issues Peter Ziljstra found
during his previous work on W^X cleanups.
This allows us to remove livepatch arch-specific .klp.arch sections
and add proper support for jump labels in patched code.
Also, this patchset removes the last module_disable_ro() usage in the
tree.
Patches from Josh Poimboeuf and Peter Zijlstra
- a few other minor cleanups
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/livepatching/livepatching:
MAINTAINERS: add lib/livepatch to LIVE PATCHING
livepatch: add arch-specific headers to MAINTAINERS
livepatch: Make klp_apply_object_relocs static
MAINTAINERS: adjust to livepatch .klp.arch removal
module: Make module_enable_ro() static again
x86/module: Use text_mutex in apply_relocate_add()
module: Remove module_disable_ro()
livepatch: Remove module_disable_ro() usage
x86/module: Use text_poke() for late relocations
s390/module: Use s390_kernel_write() for late relocations
s390: Change s390_kernel_write() return type to match memcpy()
livepatch: Prevent module-specific KLP rela sections from referencing vmlinux symbols
livepatch: Remove .klp.arch
livepatch: Apply vmlinux-specific KLP relocations early
livepatch: Disallow vmlinux.ko
Remove KVM_DEBUG_FS, which can easily be misconstrued as controlling
KVM-as-a-host. The sole user of CONFIG_KVM_DEBUG_FS was removed by
commit cfd8983f03 ("x86, locking/spinlocks: Remove ticket (spin)lock
implementation").
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Message-Id: <20200528031121.28904-1-sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Pull HID updates from Jiri Kosina:
- hid-mcp2221 GPIO support, from Rishi Gupta
- MT_CLS_WIN_8_DUAL obsolete quirk removal from hid-multitouch, from
Kai-Heng Feng
- a bunch of new hardware support to hid-asus driver, from Hans de
Goede
- other assorted small fixes, cleanups and device-specific quirks
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid:
HID: multitouch: Remove MT_CLS_WIN_8_DUAL
HID: multitouch: enable multi-input as a quirk for some devices
HID: sony: Fix for broken buttons on DS3 USB dongles
HID: Add quirks for Trust Panora Graphic Tablet
HID: apple: Swap the Fn and Left Control keys on Apple keyboards
HID: asus: Add depends on USB_HID to HID_ASUS Kconfig option
HID: asus: Fix mute and touchpad-toggle keys on Medion Akoya E1239T
HID: asus: Add support for multi-touch touchpad on Medion Akoya E1239T
HID: asus: Add report_size to struct asus_touchpad_info
HID: asus: Add hid_is_using_ll_driver(usb_hid_driver) check
HID: asus: Simplify skipping of mappings for Asus T100CHI keyboard-dock
HID: asus: Only set EV_REP if we are adding a mapping
HID: i2c-hid: add Schneider SCL142ALM to descriptor override
HID: intel-ish-hid: avoid bogus uninitialized-variable warning
HID: mcp2221: add GPIO functionality support
HID: fix typo in Kconfig
HID: logitech: drop outdated references to unifying receivers
It was another busy development cycle, and the majority of changes
are found in ASoC side. Below are Some highlights.
ASoC core:
- Lots of core cleanups and refactorings, still on-going work by
Morimoto-san
ASoC drivers:
- Continued work on cleaning up and improving the Intel SOF stuff,
along with new platform support including SoundWire
- Fixes to make the Marvell SSPA driver work upstream
- Support for AMD Renoir ACP, Dialog DA7212, Freescale EASRC and
i.MX8M, Intel Elkhard Lake, Maxim MAX98390, Nuvoton NAU8812 and
NAU8814 and Realtek RT1016.
USB-audio:
- Improvement for sync and implicit feedback streams with the more
accurate frame size calculation and full-duplex support
- Support for RME Babyface Pro and Prioneer DJ DJM
HD-audio:
- Fixes for Mic mute LED on HP machines
- Re-enable support of Intel SST driver for SKL/KBL platforms
FireWire:
- Lots of refactoring, add support for RME FireFace and MOTU
UltraLite-mk3
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Merge tag 'sound-5.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound updates from Takashi Iwai:
"It was another busy development cycle, and the majority of changes are
found in ASoC side. Below are Some highlights.
ASoC core:
- Lots of core cleanups and refactorings, still on-going work by
Morimoto-san
ASoC drivers:
- Continued work on cleaning up and improving the Intel SOF stuff,
along with new platform support including SoundWire
- Fixes to make the Marvell SSPA driver work upstream
- Support for AMD Renoir ACP, Dialog DA7212, Freescale EASRC and
i.MX8M, Intel Elkhard Lake, Maxim MAX98390, Nuvoton NAU8812 and
NAU8814 and Realtek RT1016.
USB-audio:
- Improvement for sync and implicit feedback streams with the more
accurate frame size calculation and full-duplex support
- Support for RME Babyface Pro and Prioneer DJ DJM
HD-audio:
- Fixes for Mic mute LED on HP machines
- Re-enable support of Intel SST driver for SKL/KBL platforms
FireWire:
- Lots of refactoring, add support for RME FireFace and MOTU
UltraLite-mk3"
* tag 'sound-5.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (428 commits)
ALSA: es1688: Add the missed snd_card_free()
ALSA: hda: add sienna_cichlid audio asic id for sienna_cichlid up
ALSA: usb-audio: Add Pioneer DJ DJM-900NXS2 support
ASoC: qcom: q6asm-dai: kCFI fix
ASoC: soc-card: add snd_soc_card_remove_dai_link()
ASoC: soc-card: add snd_soc_card_add_dai_link()
ASoC: soc-card: add snd_soc_card_set_bias_level_post()
ASoC: soc-card: add snd_soc_card_set_bias_level()
ASoC: soc-card: add snd_soc_card_remove()
ASoC: soc-card: add snd_soc_card_late_probe()
ASoC: soc-card: add snd_soc_card_probe()
ASoC: soc-card: add probed bit field to snd_soc_card
ASoC: soc-card: add snd_soc_card_resume_post()
ASoC: soc-card: add snd_soc_card_resume_pre()
ASoC: soc-card: add snd_soc_card_suspend_post()
ASoC: soc-card: add snd_soc_card_suspend_pre()
ASoC: soc-card: move snd_soc_card_subclass to soc-card
ASoC: soc-card: move snd_soc_card_get_codec_dai() to soc-card
ASoC: soc-card: move snd_soc_card_set/get_drvdata() to soc-card
ASoC: soc-card: move snd_soc_card_jack_new() to soc-card
...
Pull pcmcia updates from Dominik Brodowski:
"Two minor PCMCIA odd fixes: one replacing zero-length arrays with a
flexible-array member, and one making a local function static"
* 'pcmcia-next' of git://git.kernel.org/pub/scm/linux/kernel/git/brodo/linux:
pcmcia: make pccard_loop_tuple() static
pcmcia: Replace zero-length array with flexible-array
New drivers: aw2013, sgm3140, some fixes. Nothing much to see here,
next release should be more interesting.
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Merge tag 'leds-5.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/pavel/linux-leds
Pull LED updates from Pavel Machek:
"New drivers: aw2013, sgm3140, some fixes
Nothing much to see here, next release should be more interesting"
* tag 'leds-5.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/pavel/linux-leds:
leds: add aw2013 driver
dt-bindings: leds: Add binding for aw2013
leds: trigger: remove redundant assignment to variable ret
leds: netxbig: Convert to use GPIO descriptors
leds: add sgm3140 driver
dt-bindings: leds: Add binding for sgm3140
leds: ariel: Add driver for status LEDs on Dell Wyse 3020
leds: pwm: check result of led_pwm_set() in led_pwm_add()
leds: tlc591xxt: hide error on EPROBE_DEFER
leds: tca6507: Include the right header
leds: lt3593: Drop surplus include
leds: lp3952: Include the right header
leds: lm355x: Drop surplus include
- Fix conflicts in pci-bridge-emul descriptions of Device Status and Slot
Control (Jon Derrick)
- Add emulation for more Device Status, Link Control, and Slot Control
bits (Jon Derrick)
- Improve emulation of reserved bits (Jon Derrick)
* remotes/lorenzo/pci/pci-bridge-emul:
PCI: pci-bridge-emul: Eliminate the 'reserved' member
PCI: pci-bridge-emul: Update for PCIe 5.0 r1.0
PCI: pci-bridge-emul: Fix Root Cap/Status comment
PCI: pci-bridge-emul: Fix PCIe bit conflicts
- Release resource in probe failure path (Wei Hu)
- Retry PCI bus D0 entry if device state is invalid (Wei Hu)
- Use struct_size() to help avoid type mistakes (Gustavo A. R. Silva)
* remotes/lorenzo/pci/hv:
PCI: hv: Use struct_size() helper
PCI: hv: Retry PCI bus D0 entry on invalid device state
PCI: hv: Fix the PCI HyperV probe failure path to release resource properly
- Constify struct pci_ecam_ops (Rob Herring)
- Support building as modules (Rob Herring)
- Eliminate wrappers for pci_host_common_probe() by using DT match table
data (Rob Herring)
* remotes/lorenzo/pci/host-generic:
PCI: host-generic: Eliminate pci_host_common_probe wrappers
PCI: host-generic: Support building as modules
PCI: Constify struct pci_ecam_ops
# Conflicts:
# drivers/pci/controller/dwc/pcie-hisi.c
- Deprecate 'cdns,max-outbound-regions' and 'cdns,no-bar-match-nbits'
bindings in favor of deriving them from 'ranges' and 'dma-ranges'
(Kishon Vijay Abraham I)
- Read Vendor and Device ID as 32 bits (not 16) from DT (Kishon Vijay
Abraham I)
* remotes/lorenzo/pci/cadence:
PCI: cadence: Fix to read 32-bit Vendor ID/Device ID property from DT
PCI: cadence: Remove "cdns,max-outbound-regions" DT property
dt-bindings: PCI: cadence: Deprecate inbound/outbound specific bindings
- Train link immediately after enabling link training to avoid issues
with Compex WLE900VX and Turris MOX devices (Pali Rohár)
- Remove ASPM config and let the PCI core do it (Pali Rohár)
- Interpret zero 'max-link-speed' value as invalid (Pali Rohár)
- Respect the 'max-link-speed' property and improve link training (Marek
Behún)
- Issue PERST via GPIO (Pali Rohár)
- Add PHY support (Marek Behún)
- Use standard PCIe capability macros (Pali Rohár)
- Document new 'max-link-speed', 'phys', and 'reset-gpios' properties
(Marek Behún)
* remotes/lorenzo/pci/aardvark:
dt-bindings: PCI: aardvark: Describe new properties
PCI: aardvark: Replace custom macros by standard linux/pci_regs.h macros
PCI: aardvark: Add PHY support
PCI: aardvark: Add FIXME comment for PCIE_CORE_CMD_STATUS_REG access
PCI: aardvark: Issue PERST via GPIO
PCI: aardvark: Improve link training
PCI: of: Zero max-link-speed value is invalid
PCI: aardvark: Don't blindly enable ASPM L0s and don't write to read-only register
PCI: aardvark: Train link immediately after enabling training
- Check .bridge_d3() hook for NULL before calling it (Bjorn Helgaas)
- Disable PME# for Pericom OHCI/UHCI USB controllers because it's
not reliably asserted on USB hotplug (Kai-Heng Feng)
- Assume ports without DLL Link Active train links in 100 ms to work
around Thunderbolt bridge defects (Mika Westerberg)
* pci/pm:
PCI/PM: Assume ports without DLL Link Active train links in 100 ms
PCI/PM: Adjust pcie_wait_for_link_delay() for caller delay
PCI: Avoid Pericom USB controller OHCI/EHCI PME# defect
serial: 8250_pci: Move Pericom IDs to pci_ids.h
PCI/PM: Call .bridge_d3() hook only if non-NULL
- Add AMD Zen Raven and Renoir Root Ports to P2PDMA whitelist (Alex
Deucher)
* pci/p2pdma:
PCI/P2PDMA: Add AMD Zen Raven and Renoir Root Ports to whitelist
- Clarify that platform_get_irq() should never return 0 (Bjorn Helgaas)
- Check for platform_get_irq() failure consistently (Bjorn Helgaas)
- Replace zero-length array with flexible-array (Gustavo A. R. Silva)
- Unify pcie_find_root_port() and pci_find_pcie_root_port() (Yicong Yang)
- Quirk Intel C620 MROMs, which have non-BARs in BAR locations (Xiaochun
Lee)
- Fix pcie_pme_resume() and pcie_pme_remove() kernel-doc (Jay Fang)
- Rename _DSM constants to align with spec (Krzysztof Wilczyński)
* pci/misc:
PCI: Rename _DSM constants to align with spec
PCI/PME: Fix kernel-doc of pcie_pme_resume() and pcie_pme_remove()
x86/PCI: Mark Intel C620 MROMs as having non-compliant BARs
PCI: Unify pcie_find_root_port() and pci_find_pcie_root_port()
PCI: Replace zero-length array with flexible-array
PCI: Check for platform_get_irq() failure consistently
driver core: platform: Clarify that IRQ 0 is invalid
- Remove unused pciehp EMI() and HP_SUPR_RM() macros (Ani Sinha)
- Use of_node_name_eq() for node name comparisons (Rob Herring)
- Convert shpchp_unconfigure_device() to void (Krzysztof Wilczynski)
* pci/hotplug:
PCI: shpchp: Make shpchp_unconfigure_device() void
PCI: Use of_node_name_eq() for node name comparisons
PCI: pciehp: Remove unused EMI() and HP_SUPR_RM() macros
- Log only ACPI_NOTIFY_DISCONNECT_RECOVER events for EDR, not all ACPI
SYSTEM-level events (Kuppuswamy Sathyanarayanan)
- Rely only on _OSC (not _OSC + HEST FIRMWARE_FIRST) to negotiate AER
Capability ownership (Alexandru Gagniuc)
- Remove HEST/FIRMWARE_FIRST parsing that was previously used to help
intuit AER Capability ownership (Kuppuswamy Sathyanarayanan)
- Remove redundant pci_is_pcie() and dev->aer_cap checks (Kuppuswamy
Sathyanarayanan)
- Print IRQ number used by DPC (Yicong Yang)
* pci/error:
PCI/DPC: Print IRQ number used by port
PCI/AER: Use "aer" variable for capability offset
PCI/AER: Remove redundant dev->aer_cap checks
PCI/AER: Remove redundant pci_is_pcie() checks
PCI/AER: Remove HEST/FIRMWARE_FIRST parsing for AER ownership
PCI/AER: Use only _OSC to determine AER ownership
PCI/EDR: Log only ACPI_NOTIFY_DISCONNECT_RECOVER events
* cros_ec_typec
- Add notifier for update, and register port partner
* Sensors/iio:
- Fixes to cros_ec_sensorhub around allocation of resources, and send_sample.
* Wilco EC
- Fix to output format of h1_gpio
* Misc
- Misc fixes to appease kernel-doc and other warnings.
- Set user space log size in chromeos_pstore
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Merge tag 'tag-chrome-platform-for-v5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/chrome-platform/linux
Pull chrome platform updates from Benson Leung:
"cros_ec_typec:
- Add notifier for update, and register port partner
Sensors/iio:
- Fixes to cros_ec_sensorhub around allocation of resources, and
send_sample
Wilco EC:
- Fix to output format of h1_gpio
Misc:
- Misc fixes to appease kernel-doc and other warnings
- Set user space log size in chromeos_pstore"
* tag 'tag-chrome-platform-for-v5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/chrome-platform/linux:
platform/chrome: cros_usbpd_logger: Add __printf annotation to append_str()
platform/chrome: cros_ec_i2c: Appease the kernel-doc deity
platform/chrome: typec: Fix ret value check error
platform/chrome: cros_ec_typec: Register port partner
platform/chrome: cros_ec_typec: Add struct for port data
platform/chrome: cros_ec_typec: Use notifier for updates
platform/chrome: cros_ec_ishtp: free ishtp buffer before sending event
platform/chrome: cros_ec_ishtp: skip old cros_ec responses
platform/chrome: wilco_ec: Provide correct output format to 'h1_gpio' file
platform/chrome: chromeos_pstore: set user space log size
This patch enable KVM support for Loongson-3 by selecting HAVE_KVM, but
only enable KVM/VZ on Loongson-3A R4+ (because VZ of early processors
are incomplete). Besides, Loongson-3 support SMP guests, so we clear the
linked load bit of LLAddr in kvm_vz_vcpu_load() if the guest has more
than one VCPUs.
Acked-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Reviewed-by: Aleksandar Markovic <aleksandar.qemu.devel@gmail.com>
Signed-off-by: Huacai Chen <chenhc@lemote.com>
Co-developed-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Message-Id: <1590220602-3547-15-git-send-email-chenhc@lemote.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This patch add more MMIO load/store instructions emulation, which can
be observed in QXL and some other device drivers:
1, LWL, LWR, LDW, LDR, SWL, SWR, SDL and SDR for all MIPS;
2, GSLBX, GSLHX, GSLWX, GSLDX, GSSBX, GSSHX, GSSWX and GSSDX for
Loongson-3.
Reviewed-by: Aleksandar Markovic <aleksandar.qemu.devel@gmail.com>
Signed-off-by: Huacai Chen <chenhc@lemote.com>
Co-developed-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Message-Id: <1590220602-3547-14-git-send-email-chenhc@lemote.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Loongson-3 has CONFIG6 and DIAG registers which need to be emulated.
CONFIG6 is mostly used to enable/disable FTLB and SFB, while DIAG is
mostly used to flush BTB, ITLB, DTLB, VTLB and FTLB.
Acked-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Reviewed-by: Aleksandar Markovic <aleksandar.qemu.devel@gmail.com>
Signed-off-by: Huacai Chen <chenhc@lemote.com>
Co-developed-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Message-Id: <1590220602-3547-13-git-send-email-chenhc@lemote.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Loongson-3 overrides lwc2 instructions to implement CPUCFG and CSR
read/write functions. These instructions all cause guest exit so CSR
doesn't benifit KVM guest (and there are always legacy methods to
provide the same functions as CSR). So, we only emulate CPUCFG and let
it return a reduced feature list (which means the virtual CPU doesn't
have any other advanced features, including CSR) in KVM.
Reviewed-by: Aleksandar Markovic <aleksandar.qemu.devel@gmail.com>
Signed-off-by: Huacai Chen <chenhc@lemote.com>
Co-developed-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Message-Id: <1590220602-3547-12-git-send-email-chenhc@lemote.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This patch add Loongson-3 Virtual IPI interrupt support in the kernel.
The current implementation of IPI emulation in QEMU is based on GIC for
MIPS, but Loongson-3 doesn't use GIC. Furthermore, IPI emulation in QEMU
is too expensive for performance (because of too many context switches
between Host and Guest). With current solution, the IPI delay may even
cause RCU stall warnings in a multi-core Guest. So, we design a faster
solution that emulate IPI interrupt in kernel (only used by Loongson-3
now).
Reviewed-by: Aleksandar Markovic <aleksandar.qemu.devel@gmail.com>
Signed-off-by: Huacai Chen <chenhc@lemote.com>
Co-developed-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Message-Id: <1590220602-3547-11-git-send-email-chenhc@lemote.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Merge tag 'linux-watchdog-5.8-rc1' of git://www.linux-watchdog.org/linux-watchdog
Pull watchdog updates from Wim Van Sebroeck:
- add new arm_smc_wdt watchdog driver
- da9062 and da9063 improvements
- clarify documentation about stop() that became optional
- document r8a7742 support
- some overall fixes and improvements
* tag 'linux-watchdog-5.8-rc1' of git://www.linux-watchdog.org/linux-watchdog:
watchdog: m54xx: Add missing include
dt-bindings: watchdog: renesas,wdt: Document r8a7742 support
watchdog: Fix runtime PM imbalance on error
watchdog: riowd: remove unneeded semicolon
watchdog: Add new arm_smc_wdt watchdog driver
dt-bindings: watchdog: Add ARM smc wdt for mt8173 watchdog
watchdog: imx2_wdt: update contact email
watchdog: iTCO: fix link error
watchdog: da9062: No need to ping manually before setting timeout
watchdog: da9063: Make use of pre-configured timeout during probe
watchdog: da9062: Initialize timeout during probe
watchdog: clarify that stop() is optional
watchdog: imx_sc_wdt: Fix reboot on crash
watchdog: ts72xx_wdt: fix build error
Steve French