Some people like to replace the default Tux boot logo by an image of
their own. There exist a few tutorials here [1] and there [2]. But
this requires modifying the source tree which is a bit cumbersome.
Add a string entry in Kbuild for each of the logo categories
(monochrome, 16-colors, 224-colors). The string entry takes a path to
a .pbm or .ppm image allowing the user to more easily provide a custom
logo without having to modify the sources.
Add an help entry with a short hint on how to convert images to the
portable pixmap file format.
Update the Makefile accordingly. When converted to .c file, the logo
will have one of these fixed file name:
- logo_linux_mono.c
- logo_linux_vga16.c
- logo_linux_clut224.c:
depending on the image type and this regardless of the name of the
.pgm/.ppm source filename. This will allow for further simplifications
in an upcoming change.
[1] ArmadeuS Project wiki -- Linux Boot Logo
Link: https://www.armadeus.org/wiki/index.php?title=Linux_Boot_Logo
[2] Timesys -- How To Use a Custom Boot Logo / Splash Screen
Link: https://linuxlink.timesys.com/docs/wiki/engineering/HOWTO_Use_a_custom_boot_logo
Signed-off-by: Vincent Mailhol <mailhol@kernel.org>
Signed-off-by: Helge Deller <deller@gmx.de>
When translating a portable pixmap file into a .c file, the pnmtologo
tool expects to receive the image type (either mono, vga16 or clut224)
as an argument under the -t option.
Currently, this information is stored in the file name. Because we
will allow for custom logo in an upcoming change, it is preferable to
decouple the image name from its type.
Add a new $2 parameter to the Makefile logo function which contains
the image type.
Update all the individual targets to provide this new argument.
Signed-off-by: Vincent Mailhol <mailhol@kernel.org>
Signed-off-by: Helge Deller <deller@gmx.de>
The kernel has no actual grey-scale logos. And looking at the git
history, it seems that there never was one (or maybe there was in the
pre-git history? I did not check that far…)
Remove the Makefile rule for the .pgm grey scale images.
Signed-off-by: Vincent Mailhol <mailhol@kernel.org>
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Helge Deller <deller@gmx.de>
We know "size" is non-zero because it is checked on the line before.
Delete the duplicate check and pull the code in a tab.
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Helge Deller <deller@gmx.de>
The sh_mobile_lcdc driver exposes overlay configuration via sysfs, but the
core driver does not require CONFIG_FB_DEVICE.
Make overlay sysfs optional so that the driver can build and operate
even when FB_DEVICE is disabled. The kernel naturally ignores the
missing attribute group, preserving buildability and type safety.
Suggested-by: Helge Deller <deller@gmx.de>
Signed-off-by: Chintan Patel <chintanlike@gmail.com>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Helge Deller <deller@gmx.de>
omapfb provides several sysfs interfaces for framebuffer configuration
and debugging, but these are not required for the core driver.
Remove the hard dependency on CONFIG_FB_DEVICE and make sysfs support
optional by using dev_of_fbinfo() to obtain the backing device at runtime.
When FB_DEVICE is disabled, sysfs operations are skipped while the code
still builds and is type-checked.
Suggested-by: Helge Deller <deller@gmx.de>
Signed-off-by: Chintan Patel <chintanlike@gmail.com>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Helge Deller <deller@gmx.de>
fbtft provides sysfs interfaces for debugging and gamma configuration,
but these are not required for the core driver.
Drop the hard dependency on CONFIG_FB_DEVICE and make sysfs support
optional by using dev_of_fbinfo() at runtime. When FB_DEVICE is disabled,
sysfs operations are skipped while the code remains buildable and
type-checked.
Suggested-by: Thomas Zimmermann <tzimmermann@suse.de>
Suggested-by: Helge Deller <deller@gmx.de>
Reviewed-by: Helge Deller <deller@gmx.de>
Signed-off-by: Chintan Patel <chintanlike@gmail.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Helge Deller <deller@gmx.de>
Add dev_of_fbinfo() to return the framebuffer struct device when
CONFIG_FB_DEVICE is enabled, or NULL otherwise.
This allows fbdev drivers to use sysfs interfaces via runtime checks
instead of CONFIG_FB_DEVICE ifdefs, keeping the code clean while
remaining fully buildable.
Suggested-by: Helge Deller <deller@gmx.de>
Reviewed-by: Helge Deller <deller@gmx.de>
Reviewed-by: Andy Shevchenko <andy@kernel.org>
Signed-off-by: Chintan Patel <chintanlike@gmail.com>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Helge Deller <deller@gmx.de>
Remove hyperv_fb reference as the driver is removed.
Signed-off-by: Prasanna Kumar T S M <ptsm@linux.microsoft.com>
Signed-off-by: Helge Deller <deller@gmx.de>
Remove hyperv_fb reference as the driver is removed.
Signed-off-by: Prasanna Kumar T S M <ptsm@linux.microsoft.com>
Signed-off-by: Helge Deller <deller@gmx.de>
If fbcon_open() fails when called from con2fb_acquire_newinfo() then
info->fbcon_par pointer remains NULL which is later dereferenced.
Add check for return value of the function con2fb_acquire_newinfo() to
avoid it.
Found by Linux Verification Center (linuxtesting.org) with SVACE.
Fixes: d1baa4ffa6 ("fbcon: set_con2fb_map fixes")
Cc: stable@vger.kernel.org
Signed-off-by: Andrey Vatoropin <a.vatoropin@crpt.ru>
Signed-off-by: Helge Deller <deller@gmx.de>
The HyperV DRM driver is available since 5.14. This makes the hyperv_fb
driver redundant, remove it.
Signed-off-by: Prasanna Kumar T S M <ptsm@linux.microsoft.com>
Signed-off-by: Helge Deller <deller@gmx.de>
The fbdev sysfs attributes are registered after sending the uevent for
the device creation, leaving a race window where e.g. udev rules may
not be able to access the sysfs attributes because the registration is
not done yet.
Fix this by switching to device_create_with_groups(). This also results in
a nice cleanup. After switching to device_create_with_groups() all that
is left of fb_init_device() is setting the drvdata and that can be passed
to device_create[_with_groups]() too. After which fb_init_device() can
be completely removed.
Dropping fb_init_device() + fb_cleanup_device() in turn allows removing
fb_info.class_flag as they were the only user of this field.
Fixes: 5fc830d6ac ("fbdev: Register sysfs groups through device_add_group")
Cc: stable@vger.kernel.org
Cc: Shixiong Ou <oushixiong@kylinos.cn>
Signed-off-by: Hans de Goede <johannes.goede@oss.qualcomm.com>
Signed-off-by: Helge Deller <deller@gmx.de>
The UFX_IOCTL_REPORT_DAMAGE ioctl does not properly copy data from
userspace to kernelspace, and instead directly references the memory,
which can cause problems if invalid data is passed from userspace. Fix
this all up by correctly copying the memory before accessing it within
the kernel.
Reported-by: Tianchu Chen <flynnnchen@tencent.com>
Cc: stable <stable@kernel.org>
Cc: Steve Glendinning <steve.glendinning@shawell.net>
Cc: Helge Deller <deller@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Helge Deller <deller@gmx.de>
A userspace program can trigger the RIVA NV3 arbitration code by calling
the FBIOPUT_VSCREENINFO ioctl on /dev/fb*. When doing so, the driver
recomputes FIFO arbitration parameters in nv3_arb(), using state->mclk_khz
(derived from the PRAMDAC MCLK PLL) as a divisor without validating it
first.
In a normal setup, state->mclk_khz is provided by the real hardware and is
non-zero. However, an attacker can construct a malicious or misconfigured
device (e.g. a crafted/emulated PCI device) that exposes a bogus PLL
configuration, causing state->mclk_khz to become zero. Once
nv3_get_param() calls nv3_arb(), the division by state->mclk_khz in the gns
calculation causes a divide error and crashes the kernel.
Fix this by checking whether state->mclk_khz is zero and bailing out before
doing the division.
The following log reveals it:
rivafb: setting virtual Y resolution to 2184
divide error: 0000 [#1] PREEMPT SMP KASAN PTI
CPU: 0 PID: 2187 Comm: syz-executor.0 Not tainted 5.18.0-rc1+ #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014
RIP: 0010:nv3_arb drivers/video/fbdev/riva/riva_hw.c:439 [inline]
RIP: 0010:nv3_get_param+0x3ab/0x13b0 drivers/video/fbdev/riva/riva_hw.c:546
Call Trace:
nv3CalcArbitration.constprop.0+0x255/0x460 drivers/video/fbdev/riva/riva_hw.c:603
nv3UpdateArbitrationSettings drivers/video/fbdev/riva/riva_hw.c:637 [inline]
CalcStateExt+0x447/0x1b90 drivers/video/fbdev/riva/riva_hw.c:1246
riva_load_video_mode+0x8a9/0xea0 drivers/video/fbdev/riva/fbdev.c:779
rivafb_set_par+0xc0/0x5f0 drivers/video/fbdev/riva/fbdev.c:1196
fb_set_var+0x604/0xeb0 drivers/video/fbdev/core/fbmem.c:1033
do_fb_ioctl+0x234/0x670 drivers/video/fbdev/core/fbmem.c:1109
fb_ioctl+0xdd/0x130 drivers/video/fbdev/core/fbmem.c:1188
__x64_sys_ioctl+0x122/0x190 fs/ioctl.c:856
Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Cc: stable@vger.kernel.org
Signed-off-by: Guangshuo Li <lgs201920130244@gmail.com>
Signed-off-by: Helge Deller <deller@gmx.de>
- Update the bootconfig parser to stop searching for a value when it
encounters a newline character.
Note that this changes the bootconfig formatting but this should not
fall under the don't break user space rule as users of bootconfig is
for booting the kernel and not about applications running in the
kernel's user space.
- Update the tests for bootconfig parser to ensure the good examples
to be parsed correctly by comparing the expected results.
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Merge tag 'bootconfig-v7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull bootconfig updates from Masami Hiramatsu:
- Update the bootconfig parser to stop searching for a value when it
encounters a newline character
- Update the tests for bootconfig parser to ensure the good examples to
be parsed correctly by comparing the expected results
* tag 'bootconfig-v7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
bootconfig: Check the parsed output of the good examples
bootconfig: Terminate value search if it hits a newline
User visible changes:
- Add an entry into MAINTAINERS file for RUST versions of code
There's now RUST code for tracing and static branches. To differentiate
that code from the C code, add entries in for the RUST version (with "[RUST]"
around it) so that the right maintainers get notified on changes.
- New bitmask-list option added to tracefs
When this is set, bitmasks in trace event are not displayed as hex
numbers, but instead as lists: e.g. 0-5,7,9 instead of 0000015f
- New show_event_filters file in tracefs
Instead of having to search all events/*/*/filter for any active filters
enabled in the trace instance, the file show_event_filters will list them
so that there's only one file that needs to be examined to see if any
filters are active.
- New show_event_triggers file in tracefs
Instead of having to search all events/*/*/trigger for any active triggers
enabled in the trace instance, the file show_event_triggers will list them
so that there's only one file that needs to be examined to see if any
triggers are active.
- Have traceoff_on_warning disable trace pintk buffer too
Recently recording of trace_printk() could go to other trace instances
instead of the top level instance. But if traceoff_on_warning triggers, it
doesn't stop the buffer with trace_printk() and that data can easily be
lost by being overwritten. Have traceoff_on_warning also disable the
instance that has trace_printk() being written to it.
- Update the hist_debug file to show what function the field uses
When CONFIG_HIST_TRIGGERS_DEBUG is enabled, a hist_debug file exists for
every event. This displays the internal data of any histogram enabled for
that event. But it is lacking the function that is called to process one
of its fields. This is very useful information that was missing when
debugging histograms.
- Up the histogram stack size from 16 to 31
Stack traces can be used as keys for event histograms. Currently the size
of the stack that is stored is limited to just 16 entries. But the storage
space in the histogram is 256 bytes, meaning that it can store up to 31
entries (plus one for the count of entries). Instead of letting that space
go to waste, up the limit from 16 to 31. This makes the keys much more
useful.
- Fix permissions of per CPU file buffer_size_kb
The per CPU file of buffer_size_kb was incorrectly set to read only in a
previous cleanup. It should be writable.
- Reset "last_boot_info" if the persistent buffer is cleared
The last_boot_info shows address information of a persistent ring buffer
if it contains data from a previous boot. It is cleared when recording
starts again, but it is not cleared when the buffer is reset. The data is
useless after a reset so clear it on reset too.
Internal changes:
- A change was made to allow tracepoint callbacks to have preemption
enabled, and instead be protected by SRCU. This required some updates to
the callbacks for perf and BPF.
perf needed to disable preemption directly in its callback because it
expects preemption disabled in the later code.
BPF needed to disable migration, as its code expects to run completely on
the same CPU.
- Have irq_work wake up other CPU if current CPU is "isolated"
When there's a waiter waiting on ring buffer data and a new event happens,
an irq work is triggered to wake up that waiter. This is noisy on isolated
CPUs (running NO_HZ_FULL). Trigger an IPI to a house keeping CPU instead.
- Use proper free of trigger_data instead of open coding it in.
- Remove redundant call of event_trigger_reset_filter()
It was called immediately in a function that was called right after it.
- Workqueue cleanups
- Report errors if tracing_update_buffers() were to fail.
- Make the enum update workqueue generic for other parts of tracing
On boot up, a work queue is created to convert enum names into their
numbers in the trace event format files. This work queue can also be used
for other aspects of tracing that takes some time and shouldn't be called
by the init call code.
The blk_trace initialization takes a bit of time. Have the initialization
code moved to the new tracing generic work queue function.
- Skip kprobe boot event creation call if there's no kprobes defined on cmdline
The kprobe initialization to set up kprobes if they are defined on the
cmdline requires taking the event_mutex lock. This can be held by other
tracing code doing initialization for a long time. Since kprobes added to
the kernel command line need to be setup immediately, as they may be
tracing early initialization code, they cannot be postponed in a work
queue and must be setup in the initcall code.
If there's no kprobe on the kernel cmdline, there's no reason to take the
mutex and slow down the boot up code waiting to get the lock only to find
out there's nothing to do. Simply exit out early if there's no kprobes on
the kernel cmdline.
If there are kprobes on the cmdline, then someone cares more about tracing
over the speed of boot up.
- Clean up the trigger code a bit
- Move code out of trace.c and into their own files
trace.c is now over 11,000 lines of code and has become more difficult to
maintain. Start splitting it up so that related code is in their own
files.
Move all the trace_printk() related code into trace_printk.c.
Move the __always_inline stack functions into trace.h.
Move the pid filtering code into a new trace_pid.c file.
- Better define the max latency and snapshot code
The latency tracers have a "max latency" buffer that is a copy of the main
buffer and gets swapped with it when a new high latency is detected. This
keeps the trace up to the highest latency around where this max_latency
buffer is never written to. It is only used to save the last max latency
trace.
A while ago a snapshot feature was added to tracefs to allow user space to
perform the same logic. It could also enable events to trigger a
"snapshot" if one of their fields hit a new high. This was built on top of
the latency max_latency buffer logic.
Because snapshots came later, they were dependent on the latency tracers
to be enabled. In reality, the latency tracers depend on the snapshot code
and not the other way around. It was just that they came first.
Restructure the code and the kconfigs to have the latency tracers depend
on snapshot code instead. This actually simplifies the logic a bit and
allows to disable more when the latency tracers are not defined and the
snapshot code is.
- Fix a "false sharing" in the hwlat tracer code
The loop to search for latency in hardware was using a variable that could
be changed by user space for each sample. If the user change this
variable, it could cause a bus contention, and reading that variable can
show up as a large latency in the trace causing a false positive. Read
this variable at the start of the sample with a READ_ONCE() into a local
variable and keep the code from sharing cache lines with readers.
- Fix function graph tracer static branch optimization code
When only one tracer is defined for function graph tracing, it uses a
static branch to call that tracer directly. When another tracer is added,
it goes into loop logic to call all the registered callbacks.
The code was incorrect when going back to one tracer and never re-enabled
the static branch again to do the optimization code.
- And other small fixes and cleanups.
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Merge tag 'trace-v7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull tracing updates from Steven Rostedt:
"User visible changes:
- Add an entry into MAINTAINERS file for RUST versions of code
There's now RUST code for tracing and static branches. To
differentiate that code from the C code, add entries in for the
RUST version (with "[RUST]" around it) so that the right
maintainers get notified on changes.
- New bitmask-list option added to tracefs
When this is set, bitmasks in trace event are not displayed as hex
numbers, but instead as lists: e.g. 0-5,7,9 instead of 0000015f
- New show_event_filters file in tracefs
Instead of having to search all events/*/*/filter for any active
filters enabled in the trace instance, the file show_event_filters
will list them so that there's only one file that needs to be
examined to see if any filters are active.
- New show_event_triggers file in tracefs
Instead of having to search all events/*/*/trigger for any active
triggers enabled in the trace instance, the file
show_event_triggers will list them so that there's only one file
that needs to be examined to see if any triggers are active.
- Have traceoff_on_warning disable trace pintk buffer too
Recently recording of trace_printk() could go to other trace
instances instead of the top level instance. But if
traceoff_on_warning triggers, it doesn't stop the buffer with
trace_printk() and that data can easily be lost by being
overwritten. Have traceoff_on_warning also disable the instance
that has trace_printk() being written to it.
- Update the hist_debug file to show what function the field uses
When CONFIG_HIST_TRIGGERS_DEBUG is enabled, a hist_debug file
exists for every event. This displays the internal data of any
histogram enabled for that event. But it is lacking the function
that is called to process one of its fields. This is very useful
information that was missing when debugging histograms.
- Up the histogram stack size from 16 to 31
Stack traces can be used as keys for event histograms. Currently
the size of the stack that is stored is limited to just 16 entries.
But the storage space in the histogram is 256 bytes, meaning that
it can store up to 31 entries (plus one for the count of entries).
Instead of letting that space go to waste, up the limit from 16 to
31. This makes the keys much more useful.
- Fix permissions of per CPU file buffer_size_kb
The per CPU file of buffer_size_kb was incorrectly set to read only
in a previous cleanup. It should be writable.
- Reset "last_boot_info" if the persistent buffer is cleared
The last_boot_info shows address information of a persistent ring
buffer if it contains data from a previous boot. It is cleared when
recording starts again, but it is not cleared when the buffer is
reset. The data is useless after a reset so clear it on reset too.
Internal changes:
- A change was made to allow tracepoint callbacks to have preemption
enabled, and instead be protected by SRCU. This required some
updates to the callbacks for perf and BPF.
perf needed to disable preemption directly in its callback because
it expects preemption disabled in the later code.
BPF needed to disable migration, as its code expects to run
completely on the same CPU.
- Have irq_work wake up other CPU if current CPU is "isolated"
When there's a waiter waiting on ring buffer data and a new event
happens, an irq work is triggered to wake up that waiter. This is
noisy on isolated CPUs (running NO_HZ_FULL). Trigger an IPI to a
house keeping CPU instead.
- Use proper free of trigger_data instead of open coding it in.
- Remove redundant call of event_trigger_reset_filter()
It was called immediately in a function that was called right after
it.
- Workqueue cleanups
- Report errors if tracing_update_buffers() were to fail.
- Make the enum update workqueue generic for other parts of tracing
On boot up, a work queue is created to convert enum names into
their numbers in the trace event format files. This work queue can
also be used for other aspects of tracing that takes some time and
shouldn't be called by the init call code.
The blk_trace initialization takes a bit of time. Have the
initialization code moved to the new tracing generic work queue
function.
- Skip kprobe boot event creation call if there's no kprobes defined
on cmdline
The kprobe initialization to set up kprobes if they are defined on
the cmdline requires taking the event_mutex lock. This can be held
by other tracing code doing initialization for a long time. Since
kprobes added to the kernel command line need to be setup
immediately, as they may be tracing early initialization code, they
cannot be postponed in a work queue and must be setup in the
initcall code.
If there's no kprobe on the kernel cmdline, there's no reason to
take the mutex and slow down the boot up code waiting to get the
lock only to find out there's nothing to do. Simply exit out early
if there's no kprobes on the kernel cmdline.
If there are kprobes on the cmdline, then someone cares more about
tracing over the speed of boot up.
- Clean up the trigger code a bit
- Move code out of trace.c and into their own files
trace.c is now over 11,000 lines of code and has become more
difficult to maintain. Start splitting it up so that related code
is in their own files.
Move all the trace_printk() related code into trace_printk.c.
Move the __always_inline stack functions into trace.h.
Move the pid filtering code into a new trace_pid.c file.
- Better define the max latency and snapshot code
The latency tracers have a "max latency" buffer that is a copy of
the main buffer and gets swapped with it when a new high latency is
detected. This keeps the trace up to the highest latency around
where this max_latency buffer is never written to. It is only used
to save the last max latency trace.
A while ago a snapshot feature was added to tracefs to allow user
space to perform the same logic. It could also enable events to
trigger a "snapshot" if one of their fields hit a new high. This
was built on top of the latency max_latency buffer logic.
Because snapshots came later, they were dependent on the latency
tracers to be enabled. In reality, the latency tracers depend on
the snapshot code and not the other way around. It was just that
they came first.
Restructure the code and the kconfigs to have the latency tracers
depend on snapshot code instead. This actually simplifies the logic
a bit and allows to disable more when the latency tracers are not
defined and the snapshot code is.
- Fix a "false sharing" in the hwlat tracer code
The loop to search for latency in hardware was using a variable
that could be changed by user space for each sample. If the user
change this variable, it could cause a bus contention, and reading
that variable can show up as a large latency in the trace causing a
false positive. Read this variable at the start of the sample with
a READ_ONCE() into a local variable and keep the code from sharing
cache lines with readers.
- Fix function graph tracer static branch optimization code
When only one tracer is defined for function graph tracing, it uses
a static branch to call that tracer directly. When another tracer
is added, it goes into loop logic to call all the registered
callbacks.
The code was incorrect when going back to one tracer and never
re-enabled the static branch again to do the optimization code.
- And other small fixes and cleanups"
* tag 'trace-v7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: (46 commits)
function_graph: Restore direct mode when callbacks drop to one
tracing: Fix indentation of return statement in print_trace_fmt()
tracing: Reset last_boot_info if ring buffer is reset
tracing: Fix to set write permission to per-cpu buffer_size_kb
tracing: Fix false sharing in hwlat get_sample()
tracing: Move d_max_latency out of CONFIG_FSNOTIFY protection
tracing: Better separate SNAPSHOT and MAX_TRACE options
tracing: Add tracer_uses_snapshot() helper to remove #ifdefs
tracing: Rename trace_array field max_buffer to snapshot_buffer
tracing: Move pid filtering into trace_pid.c
tracing: Move trace_printk functions out of trace.c and into trace_printk.c
tracing: Use system_state in trace_printk_init_buffers()
tracing: Have trace_printk functions use flags instead of using global_trace
tracing: Make tracing_update_buffers() take NULL for global_trace
tracing: Make printk_trace global for tracing system
tracing: Move ftrace_trace_stack() out of trace.c and into trace.h
tracing: Move __trace_buffer_{un}lock_*() functions to trace.h
tracing: Make tracing_selftest_running global to the tracing subsystem
tracing: Make tracing_disabled global for tracing system
tracing: Clean up use of trace_create_maxlat_file()
...
Highlights:
- amd/pmf:
- Avoid overwriting BIOS input values when events occur rapidly
- Fix PMF driver issues related to S4 (in part on crypto/ccp side)
- Add NPU metrics API (for accel side consumers)
- Allow disabling Smart PC function through a module parameter
- asus-wmi & HID/asus:
- Unification of backlight control (replaces quirks)
- Support multiple interfaces for controlling keyboard/RGB brightness
- Simplify init sequence
- hp-wmi:
- Add manual fan control for Victus S models
- Add fan mode keep-alive
- Fix platform profile values for Omen 16-wf1xxx
- Add EC offset to get the thermal profile
- intel/pmc: Show substate residencies also for non-primary PMCs
- intel/ISST:
- Store and restore data for all domains
- Write interface improvements
- lenovo-wmi:
- Support multiple Capability Data
- Add HWMON reporting and tuning support
- mellanox/mlx-platform: Add HI173 & HI174 support
- surface/aggregator_registry: Add Surface Pro 11 (QCOM)
- thinkpad_acpi: Add support for HW damage detection capability
- uniwill: Implement cTGP setting
- wmi:
- Introduce marshalling support
- Convert a few drivers to use the new buffer-based WMI API
- tools/power/x86/intel-speed-select: Allow read operations for non-root
- Miscellaneous cleanups / refactoring / improvements
The following is an automated shortlog grouped by driver:
amd/pmf:
- Added a module parameter to disable the Smart PC function
- Introduce new interface to export NPU metrics
- Prevent TEE errors after hibernate
- Use ring buffer to store custom BIOS input values
amd:
- Use scope-based cleanup for wbrf_record()
asus-wmi:
- add keyboard brightness event handler
- Add support for multiple kbd led handlers
- remove unused keyboard backlight quirk
crypto:
- ccp - Add an S4 restore flow
- ccp - Declare PSP dead if PSP_CMD_TEE_RING_INIT fails
- ccp - Factor out ring destroy handling to a helper
- ccp - Send PSP_CMD_TEE_RING_DESTROY when PSP_CMD_TEE_RING_INIT fails
HID: asus:
- add support for the asus-wmi brightness handler
- early return for ROG devices
- fortify keyboard handshake
- initialize additional endpoints only for certain devices
- listen to the asus-wmi brightness device instead of creating one
- move vendor initialization to probe
- simplify RGB init sequence
- use same report_id in response
hp-wmi:
- Add EC offsets to read Victus S thermal profile
- add manual fan control for Victus S models
- fix platform profile values for Omen 16-wf1xxx
- implement fan keep-alive
- order include headers
ideadpad-laptop:
- Clean up style warnings and checks
intel/pmc:
- Change LPM mode fields to u8
- Enable substate residencies for multiple PMCs
- Move LPM mode attributes to PMC
- Remove double empty line
intel/pmt:
- Replace sprintf() with sysfs_emit()
intel/uncore-freq:
- Replace sprintf() with scnprintf()
- Replace sprintf() with sysfs_emit()
intel-wmi-sbl-fw-update:
- Use new buffer-based WMI API
intel/wmi: thunderbolt:
- Use new buffer-based WMI API
ISST:
- Add missing write block check
- Check for admin capability for write commands
- Optimize suspend/resume callbacks
- Store and restore all domains data
lenovo-wmi-capdata:
- Add support for Capability Data 00
- Add support for Fan Test Data
lenovo-wmi-{capdata,other}:
- Fix HWMON channel visibility
- Support multiple Capability Data
lenovo-wmi-capdata:
- Wire up Fan Test Data
lenovo-wmi-helpers:
- Convert returned buffer into u32
lenovo-wmi-other:
- Add HWMON for fan reporting/tuning
mlx-platform:
- Add support DGX flavor of next-generation 800GB/s ethernet switch.
- Add support for new Nvidia DGX system based on class VMOD0010
Rename lenovo-wmi-capdata01 to lenovo-wmi-capdata:
- Rename lenovo-wmi-capdata01 to lenovo-wmi-capdata
surface: aggregator_registry:
- Add Surface Pro 11 (QCOM)
surface:
- Replace deprecated strcpy() in surface_button_add()
thinkpad_acpi:
- Add support to detect hardware damage detection capability.
- Add sysfs to display details of damaged device.
tools/power/x86/intel-speed-select:
- Allow non root users
- Fix file descriptor leak in isolate_cpus()
- Use pkg-config for libnl-3.0 detection
- v1.25 release
uniwill:
- Implement cTGP setting
uniwill-laptop:
- Introduce device descriptor system
wmi:
- Add helper functions for WMI string conversions
- Add kunit test for the marshalling code
- Add kunit test for the string conversion code
wmi-bmof:
- Use new buffer-based WMI API
wmi:
- Introduce marshalling support
wmi: string-kunit:
- Add missing oversized string test case
wmi:
- Update driver development guide
xiaomi-wmi:
- Use new buffer-based WMI API
yogabook:
- Clean up code style
Merges:
- Merge branch 'fixes' of into for-next
- Merge branch 'intel-sst' of https://github.com/spandruvada/linux-kernel into for-next
- Merge branch 'platform-drivers-x86-asus-kbd' into for-next
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Merge tag 'platform-drivers-x86-v7.0-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86
Pull x86 platform driver updates from Ilpo Järvinen:
"Highlights:
- amd/pmf:
- Avoid overwriting BIOS input values when events occur rapidly
- Fix PMF driver issues related to S4 (in part on crypto/ccp side)
- Add NPU metrics API (for accel side consumers)
- Allow disabling Smart PC function through a module parameter
- asus-wmi & HID/asus:
- Unification of backlight control (replaces quirks)
- Support multiple interfaces for controlling keyboard/RGB brightness
- Simplify init sequence
- hp-wmi:
- Add manual fan control for Victus S models
- Add fan mode keep-alive
- Fix platform profile values for Omen 16-wf1xxx
- Add EC offset to get the thermal profile
- intel/pmc: Show substate residencies also for non-primary PMCs
- intel/ISST:
- Store and restore data for all domains
- Write interface improvements
- lenovo-wmi:
- Support multiple Capability Data
- Add HWMON reporting and tuning support
- mellanox/mlx-platform: Add HI173 & HI174 support
- surface/aggregator_registry: Add Surface Pro 11 (QCOM)
- thinkpad_acpi: Add support for HW damage detection capability
- uniwill: Implement cTGP setting
- wmi:
- Introduce marshalling support
- Convert a few drivers to use the new buffer-based WMI API
- tools/power/x86/intel-speed-select: Allow read operations for non-root
- Miscellaneous cleanups / refactoring / improvements"
* tag 'platform-drivers-x86-v7.0-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (68 commits)
platform/x86: lenovo-wmi-{capdata,other}: Fix HWMON channel visibility
platform/x86: hp-wmi: Add EC offsets to read Victus S thermal profile
platform: mellanox: mlx-platform: Add support DGX flavor of next-generation 800GB/s ethernet switch.
platform: mellanox: mlx-platform: Add support for new Nvidia DGX system based on class VMOD0010
HID: asus: add support for the asus-wmi brightness handler
platform/x86: asus-wmi: add keyboard brightness event handler
platform/x86: asus-wmi: remove unused keyboard backlight quirk
HID: asus: listen to the asus-wmi brightness device instead of creating one
platform/x86: asus-wmi: Add support for multiple kbd led handlers
HID: asus: early return for ROG devices
HID: asus: move vendor initialization to probe
HID: asus: fortify keyboard handshake
HID: asus: use same report_id in response
HID: asus: initialize additional endpoints only for certain devices
HID: asus: simplify RGB init sequence
platform/wmi: string-kunit: Add missing oversized string test case
platform/x86/amd/pmf: Added a module parameter to disable the Smart PC function
platform/x86/uniwill: Implement cTGP setting
platform/x86: uniwill-laptop: Introduce device descriptor system
platform/x86/amd: Use scope-based cleanup for wbrf_record()
...
The ofpart parsing in physmap-core has been prioritized.
There has been a series of conversion to scoped for each OF child
loops.
* Bindings
The bulk of the changes consists in binding fixes/updates to restrict
the use of undefined properties, which was almost inefficient in the
current form because of the nesting of partition nodes and the lack of
compatible strings sometimes.
These changes are accompanied by YAML conversions and the addition of a
dma-coherent property in the cdns,hp-nfc driver.
* SPI NAND
The major feature this release is the support for octal DTR
modes (8D-8D-8D).
Support for Foresee F35SQB002G chips has been added.
Other changes are small misc fixes.
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Merge tag 'mtd/for-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux
Pull MTD updates from Miquel Raynal:
"MTD:
- prioritize ofpart in physmap-core probing
- conversions to scoped for each OF child loops
Bindings:
- The bulk of the changes consists of binding fixes/updates to
restrict the use of undefined properties, which was mostly
ineffective in the current form because of the nesting of partition
nodes and the lack of compatible strings
- YAML conversions and the addition of a dma-coherent property in the
cdns,hp-nfc driver
SPI NAND:
- support for octal DTR modes (8D-8D-8D)
- support for Foresee F35SQB002G chips
And small misc fixes"
* tag 'mtd/for-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux: (65 commits)
mtd: spi-nor: hisi-sfc: fix refcounting bug in hisi_spi_nor_register_all()
mtd: spinand: fix NULL pointer dereference in spinand_support_vendor_ops()
mtd: rawnand: pl353: Add message about ECC mode
mtd: rawnand: pl353: Fix software ECC support
mtd: spinand: winbond: Remove unneeded semicolon
dt-bindings: mtd: cdns,hp-nfc: Add dma-coherent property
mtd: spinand: Disable continuous read during probe
mtd: spinand: add Foresee F35SQB002G flash support
mtd: spinand: winbond: W35N octal DTR support
mtd: spinand: Add octal DTR support
mtd: spinand: Warn if using SSDR-only vendor commands in a non SSDR mode
mtd: spinand: Give the bus interface to the configuration helper
mtd: spinand: Propagate the bus interface across core helpers
mtd: spinand: Add support for setting a bus interface
mtd: spinand: Gather all the bus interface steps in one single function
mtd: spinand: winbond: Configure the IO mode after the dummy cycles
mtd: spinand: winbond: Rename IO_MODE register macro
mtd: spinand: winbond: Fix style
mtd: spinand: winbond: Register W35N vendor specific operation
mtd: spinand: winbond: Register W25N vendor specific operation
...
A small code cleanup for DMA-mapping subsystem:
- removal of unused hooks (Robin Murphy)
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Merge tag 'dma-mapping-7.0-2026-02-13' of git://git.kernel.org/pub/scm/linux/kernel/git/mszyprowski/linux
Pull dma-mapping update from Marek Szyprowski:
"A small code cleanup for the DMA-mapping subsystem: removal of unused
hooks (Robin Murphy)"
* tag 'dma-mapping-7.0-2026-02-13' of git://git.kernel.org/pub/scm/linux/kernel/git/mszyprowski/linux:
dma-mapping: Remove dma_mark_clean (again)
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Merge tag 'mm-hotfixes-stable-2026-02-13-07-14' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull MM fixes from Andrew Morton:
"Three MM hotfixes, all three are cc:stable"
* tag 'mm-hotfixes-stable-2026-02-13-07-14' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
procfs: fix possible double mmput() in do_procmap_query()
mm/page_alloc: skip debug_check_no_{obj,locks}_freed with FPI_TRYLOCK
mm/hugetlb: restore failed global reservations to subpool
- in order support in virtio core
- multiple address space support in vduse
- fixes, cleanups all over the place, notably
- dma alignment fixes for non cache coherent systems
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:
- in-order support in virtio core
- multiple address space support in vduse
- fixes, cleanups all over the place, notably dma alignment fixes for
non-cache-coherent systems
* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: (59 commits)
vduse: avoid adding implicit padding
vhost: fix caching attributes of MMIO regions by setting them explicitly
vdpa/mlx5: update MAC address handling in mlx5_vdpa_set_attr()
vdpa/mlx5: reuse common function for MAC address updates
vdpa/mlx5: update mlx_features with driver state check
crypto: virtio: Replace package id with numa node id
crypto: virtio: Remove duplicated virtqueue_kick in virtio_crypto_skcipher_crypt_req
crypto: virtio: Add spinlock protection with virtqueue notification
Documentation: Add documentation for VDUSE Address Space IDs
vduse: bump version number
vduse: add vq group asid support
vduse: merge tree search logic of IOTLB_GET_FD and IOTLB_GET_INFO ioctls
vduse: take out allocations from vduse_dev_alloc_coherent
vduse: remove unused vaddr parameter of vduse_domain_free_coherent
vduse: refactor vdpa_dev_add for goto err handling
vhost: forbid change vq groups ASID if DRIVER_OK is set
vdpa: document set_group_asid thread safety
vduse: return internal vq group struct as map token
vduse: add vq group support
vduse: add v1 API definition
...
- Add more CPUCFG mask bits.
- Improve feature detection.
- Add lazy load support for FPU and binary translation (LBT) register state.
- Fix return value for memory reads from and writes to in-kernel devices.
- Add support for detecting preemption from within a guest.
- Add KVM steal time test case to tools/selftests.
ARM:
- Add support for FEAT_IDST, allowing ID registers that are not
implemented to be reported as a normal trap rather than as an UNDEF
exception.
- Add sanitisation of the VTCR_EL2 register, fixing a number of
UXN/PXN/XN bugs in the process.
- Full handling of RESx bits, instead of only RES0, and resulting in
SCTLR_EL2 being added to the list of sanitised registers.
- More pKVM fixes for features that are not supposed to be exposed to
guests.
- Make sure that MTE being disabled on the pKVM host doesn't give it
the ability to attack the hypervisor.
- Allow pKVM's host stage-2 mappings to use the Force Write Back
version of the memory attributes by using the "pass-through'
encoding.
- Fix trapping of ICC_DIR_EL1 on GICv5 hosts emulating GICv3 for the
guest.
- Preliminary work for guest GICv5 support.
- A bunch of debugfs fixes, removing pointless custom iterators stored
in guest data structures.
- A small set of FPSIMD cleanups.
- Selftest fixes addressing the incorrect alignment of page
allocation.
- Other assorted low-impact fixes and spelling fixes.
RISC-V:
- Fixes for issues discoverd by KVM API fuzzing in
kvm_riscv_aia_imsic_has_attr(), kvm_riscv_aia_imsic_rw_attr(),
and kvm_riscv_vcpu_aia_imsic_update()
- Allow Zalasr, Zilsd and Zclsd extensions for Guest/VM
- Transparent huge page support for hypervisor page tables
- Adjust the number of available guest irq files based on MMIO
register sizes found in the device tree or the ACPI tables
- Add RISC-V specific paging modes to KVM selftests
- Detect paging mode at runtime for selftests
s390:
- Performance improvement for vSIE (aka nested virtualization)
- Completely new memory management. s390 was a special snowflake that enlisted
help from the architecture's page table management to build hypervisor
page tables, in particular enabling sharing the last level of page
tables. This however was a lot of code (~3K lines) in order to support
KVM, and also blocked several features. The biggest advantages is
that the page size of userspace is completely independent of the
page size used by the guest: userspace can mix normal pages, THPs and
hugetlbfs as it sees fit, and in fact transparent hugepages were not
possible before. It's also now possible to have nested guests and
guests with huge pages running on the same host.
- Maintainership change for s390 vfio-pci
- Small quality of life improvement for protected guests
x86:
- Add support for giving the guest full ownership of PMU hardware (contexted
switched around the fastpath run loop) and allowing direct access to data
MSRs and PMCs (restricted by the vPMU model). KVM still intercepts
access to control registers, e.g. to enforce event filtering and to
prevent the guest from profiling sensitive host state. This is more
accurate, since it has no risk of contention and thus dropped events, and
also has significantly less overhead.
For more information, see the commit message for merge commit bf2c3138ae
("Merge tag 'kvm-x86-pmu-6.20' of https://github.com/kvm-x86/linux into HEAD").
- Disallow changing the virtual CPU model if L2 is active, for all the same
reasons KVM disallows change the model after the first KVM_RUN.
- Fix a bug where KVM would incorrectly reject host accesses to PV MSRs
when running with KVM_CAP_ENFORCE_PV_FEATURE_CPUID enabled, even if those
were advertised as supported to userspace,
- Fix a bug with protected guest state (SEV-ES/SNP and TDX) VMs, where KVM
would attempt to read CR3 configuring an async #PF entry.
- Fail the build if EXPORT_SYMBOL_GPL or EXPORT_SYMBOL is used in KVM (for x86
only) to enforce usage of EXPORT_SYMBOL_FOR_KVM_INTERNAL. Only a few exports
that are intended for external usage, and those are allowed explicitly.
- When checking nested events after a vCPU is unblocked, ignore -EBUSY instead
of WARNing. Userspace can sometimes put the vCPU into what should be an
impossible state, and spurious exit to userspace on -EBUSY does not really
do anything to solve the issue.
- Also throw in the towel and drop the WARN on INIT/SIPI being blocked when vCPU
is in Wait-For-SIPI, which also resulted in playing whack-a-mole with syzkaller
stuffing architecturally impossible states into KVM.
- Add support for new Intel instructions that don't require anything beyond
enumerating feature flags to userspace.
- Grab SRCU when reading PDPTRs in KVM_GET_SREGS2.
- Add WARNs to guard against modifying KVM's CPU caps outside of the intended
setup flow, as nested VMX in particular is sensitive to unexpected changes
in KVM's golden configuration.
- Add a quirk to allow userspace to opt-in to actually suppress EOI broadcasts
when the suppression feature is enabled by the guest (currently limited to
split IRQCHIP, i.e. userspace I/O APIC). Sadly, simply fixing KVM to honor
Suppress EOI Broadcasts isn't an option as some userspaces have come to rely
on KVM's buggy behavior (KVM advertises Supress EOI Broadcast irrespective
of whether or not userspace I/O APIC supports Directed EOIs).
- Clean up KVM's handling of marking mapped vCPU pages dirty.
- Drop a pile of *ancient* sanity checks hidden behind in KVM's unused
ASSERT() macro, most of which could be trivially triggered by the guest
and/or user, and all of which were useless.
- Fold "struct dest_map" into its sole user, "struct rtc_status", to make it
more obvious what the weird parameter is used for, and to allow fropping
these RTC shenanigans if CONFIG_KVM_IOAPIC=n.
- Bury all of ioapic.h, i8254.h and related ioctls (including
KVM_CREATE_IRQCHIP) behind CONFIG_KVM_IOAPIC=y.
- Add a regression test for recent APICv update fixes.
- Handle "hardware APIC ISR", a.k.a. SVI, updates in kvm_apic_update_apicv()
to consolidate the updates, and to co-locate SVI updates with the updates
for KVM's own cache of ISR information.
- Drop a dead function declaration.
- Minor cleanups.
x86 (Intel):
- Rework KVM's handling of VMCS updates while L2 is active to temporarily
switch to vmcs01 instead of deferring the update until the next nested
VM-Exit. The deferred updates approach directly contributed to several
bugs, was proving to be a maintenance burden due to the difficulty in
auditing the correctness of deferred updates, and was polluting
"struct nested_vmx" with a growing pile of booleans.
- Fix an SGX bug where KVM would incorrectly try to handle EPCM page faults,
and instead always reflect them into the guest. Since KVM doesn't shadow
EPCM entries, EPCM violations cannot be due to KVM interference and
can't be resolved by KVM.
- Fix a bug where KVM would register its posted interrupt wakeup handler even
if loading kvm-intel.ko ultimately failed.
- Disallow access to vmcb12 fields that aren't fully supported, mostly to
avoid weirdness and complexity for FRED and other features, where KVM wants
enable VMCS shadowing for fields that conditionally exist.
- Print out the "bad" offsets and values if kvm-intel.ko refuses to load (or
refuses to online a CPU) due to a VMCS config mismatch.
x86 (AMD):
- Drop a user-triggerable WARN on nested_svm_load_cr3() failure.
- Add support for virtualizing ERAPS. Note, correct virtualization of ERAPS
relies on an upcoming, publicly announced change in the APM to reduce the
set of conditions where hardware (i.e. KVM) *must* flush the RAP.
- Ignore nSVM intercepts for instructions that are not supported according to
L1's virtual CPU model.
- Add support for expedited writes to the fast MMIO bus, a la VMX's fastpath
for EPT Misconfig.
- Don't set GIF when clearing EFER.SVME, as GIF exists independently of SVM,
and allow userspace to restore nested state with GIF=0.
- Treat exit_code as an unsigned 64-bit value through all of KVM.
- Add support for fetching SNP certificates from userspace.
- Fix a bug where KVM would use vmcb02 instead of vmcb01 when emulating VMLOAD
or VMSAVE on behalf of L2.
- Misc fixes and cleanups.
x86 selftests:
- Add a regression test for TPR<=>CR8 synchronization and IRQ masking.
- Overhaul selftest's MMU infrastructure to genericize stage-2 MMU support,
and extend x86's infrastructure to support EPT and NPT (for L2 guests).
- Extend several nested VMX tests to also cover nested SVM.
- Add a selftest for nested VMLOAD/VMSAVE.
- Rework the nested dirty log test, originally added as a regression test for
PML where KVM logged L2 GPAs instead of L1 GPAs, to improve test coverage
and to hopefully make the test easier to understand and maintain.
guest_memfd:
- Remove kvm_gmem_populate()'s preparation tracking and half-baked hugepage
handling. SEV/SNP was the only user of the tracking and it can do it via
the RMP.
- Retroactively document and enforce (for SNP) that KVM_SEV_SNP_LAUNCH_UPDATE
and KVM_TDX_INIT_MEM_REGION require the source page to be 4KiB aligned, to
avoid non-trivial complexity for something that no known VMM seems to be
doing and to avoid an API special case for in-place conversion, which
simply can't support unaligned sources.
- When populating guest_memfd memory, GUP the source page in common code and
pass the refcounted page to the vendor callback, instead of letting vendor
code do the heavy lifting. Doing so avoids a looming deadlock bug with
in-place due an AB-BA conflict betwee mmap_lock and guest_memfd's filemap
invalidate lock.
Generic:
- Fix a bug where KVM would ignore the vCPU's selected address space when
creating a vCPU-specific mapping of guest memory. Actually this bug
could not be hit even on x86, the only architecture with multiple
address spaces, but it's a bug nevertheless.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull KVM updates from Paolo Bonzini:
"Loongarch:
- Add more CPUCFG mask bits
- Improve feature detection
- Add lazy load support for FPU and binary translation (LBT) register
state
- Fix return value for memory reads from and writes to in-kernel
devices
- Add support for detecting preemption from within a guest
- Add KVM steal time test case to tools/selftests
ARM:
- Add support for FEAT_IDST, allowing ID registers that are not
implemented to be reported as a normal trap rather than as an UNDEF
exception
- Add sanitisation of the VTCR_EL2 register, fixing a number of
UXN/PXN/XN bugs in the process
- Full handling of RESx bits, instead of only RES0, and resulting in
SCTLR_EL2 being added to the list of sanitised registers
- More pKVM fixes for features that are not supposed to be exposed to
guests
- Make sure that MTE being disabled on the pKVM host doesn't give it
the ability to attack the hypervisor
- Allow pKVM's host stage-2 mappings to use the Force Write Back
version of the memory attributes by using the "pass-through'
encoding
- Fix trapping of ICC_DIR_EL1 on GICv5 hosts emulating GICv3 for the
guest
- Preliminary work for guest GICv5 support
- A bunch of debugfs fixes, removing pointless custom iterators
stored in guest data structures
- A small set of FPSIMD cleanups
- Selftest fixes addressing the incorrect alignment of page
allocation
- Other assorted low-impact fixes and spelling fixes
RISC-V:
- Fixes for issues discoverd by KVM API fuzzing in
kvm_riscv_aia_imsic_has_attr(), kvm_riscv_aia_imsic_rw_attr(), and
kvm_riscv_vcpu_aia_imsic_update()
- Allow Zalasr, Zilsd and Zclsd extensions for Guest/VM
- Transparent huge page support for hypervisor page tables
- Adjust the number of available guest irq files based on MMIO
register sizes found in the device tree or the ACPI tables
- Add RISC-V specific paging modes to KVM selftests
- Detect paging mode at runtime for selftests
s390:
- Performance improvement for vSIE (aka nested virtualization)
- Completely new memory management. s390 was a special snowflake that
enlisted help from the architecture's page table management to
build hypervisor page tables, in particular enabling sharing the
last level of page tables. This however was a lot of code (~3K
lines) in order to support KVM, and also blocked several features.
The biggest advantages is that the page size of userspace is
completely independent of the page size used by the guest:
userspace can mix normal pages, THPs and hugetlbfs as it sees fit,
and in fact transparent hugepages were not possible before. It's
also now possible to have nested guests and guests with huge pages
running on the same host
- Maintainership change for s390 vfio-pci
- Small quality of life improvement for protected guests
x86:
- Add support for giving the guest full ownership of PMU hardware
(contexted switched around the fastpath run loop) and allowing
direct access to data MSRs and PMCs (restricted by the vPMU model).
KVM still intercepts access to control registers, e.g. to enforce
event filtering and to prevent the guest from profiling sensitive
host state. This is more accurate, since it has no risk of
contention and thus dropped events, and also has significantly less
overhead.
For more information, see the commit message for merge commit
bf2c3138ae ("Merge tag 'kvm-x86-pmu-6.20' ...")
- Disallow changing the virtual CPU model if L2 is active, for all
the same reasons KVM disallows change the model after the first
KVM_RUN
- Fix a bug where KVM would incorrectly reject host accesses to PV
MSRs when running with KVM_CAP_ENFORCE_PV_FEATURE_CPUID enabled,
even if those were advertised as supported to userspace,
- Fix a bug with protected guest state (SEV-ES/SNP and TDX) VMs,
where KVM would attempt to read CR3 configuring an async #PF entry
- Fail the build if EXPORT_SYMBOL_GPL or EXPORT_SYMBOL is used in KVM
(for x86 only) to enforce usage of EXPORT_SYMBOL_FOR_KVM_INTERNAL.
Only a few exports that are intended for external usage, and those
are allowed explicitly
- When checking nested events after a vCPU is unblocked, ignore
-EBUSY instead of WARNing. Userspace can sometimes put the vCPU
into what should be an impossible state, and spurious exit to
userspace on -EBUSY does not really do anything to solve the issue
- Also throw in the towel and drop the WARN on INIT/SIPI being
blocked when vCPU is in Wait-For-SIPI, which also resulted in
playing whack-a-mole with syzkaller stuffing architecturally
impossible states into KVM
- Add support for new Intel instructions that don't require anything
beyond enumerating feature flags to userspace
- Grab SRCU when reading PDPTRs in KVM_GET_SREGS2
- Add WARNs to guard against modifying KVM's CPU caps outside of the
intended setup flow, as nested VMX in particular is sensitive to
unexpected changes in KVM's golden configuration
- Add a quirk to allow userspace to opt-in to actually suppress EOI
broadcasts when the suppression feature is enabled by the guest
(currently limited to split IRQCHIP, i.e. userspace I/O APIC).
Sadly, simply fixing KVM to honor Suppress EOI Broadcasts isn't an
option as some userspaces have come to rely on KVM's buggy behavior
(KVM advertises Supress EOI Broadcast irrespective of whether or
not userspace I/O APIC supports Directed EOIs)
- Clean up KVM's handling of marking mapped vCPU pages dirty
- Drop a pile of *ancient* sanity checks hidden behind in KVM's
unused ASSERT() macro, most of which could be trivially triggered
by the guest and/or user, and all of which were useless
- Fold "struct dest_map" into its sole user, "struct rtc_status", to
make it more obvious what the weird parameter is used for, and to
allow fropping these RTC shenanigans if CONFIG_KVM_IOAPIC=n
- Bury all of ioapic.h, i8254.h and related ioctls (including
KVM_CREATE_IRQCHIP) behind CONFIG_KVM_IOAPIC=y
- Add a regression test for recent APICv update fixes
- Handle "hardware APIC ISR", a.k.a. SVI, updates in
kvm_apic_update_apicv() to consolidate the updates, and to
co-locate SVI updates with the updates for KVM's own cache of ISR
information
- Drop a dead function declaration
- Minor cleanups
x86 (Intel):
- Rework KVM's handling of VMCS updates while L2 is active to
temporarily switch to vmcs01 instead of deferring the update until
the next nested VM-Exit.
The deferred updates approach directly contributed to several bugs,
was proving to be a maintenance burden due to the difficulty in
auditing the correctness of deferred updates, and was polluting
"struct nested_vmx" with a growing pile of booleans
- Fix an SGX bug where KVM would incorrectly try to handle EPCM page
faults, and instead always reflect them into the guest. Since KVM
doesn't shadow EPCM entries, EPCM violations cannot be due to KVM
interference and can't be resolved by KVM
- Fix a bug where KVM would register its posted interrupt wakeup
handler even if loading kvm-intel.ko ultimately failed
- Disallow access to vmcb12 fields that aren't fully supported,
mostly to avoid weirdness and complexity for FRED and other
features, where KVM wants enable VMCS shadowing for fields that
conditionally exist
- Print out the "bad" offsets and values if kvm-intel.ko refuses to
load (or refuses to online a CPU) due to a VMCS config mismatch
x86 (AMD):
- Drop a user-triggerable WARN on nested_svm_load_cr3() failure
- Add support for virtualizing ERAPS. Note, correct virtualization of
ERAPS relies on an upcoming, publicly announced change in the APM
to reduce the set of conditions where hardware (i.e. KVM) *must*
flush the RAP
- Ignore nSVM intercepts for instructions that are not supported
according to L1's virtual CPU model
- Add support for expedited writes to the fast MMIO bus, a la VMX's
fastpath for EPT Misconfig
- Don't set GIF when clearing EFER.SVME, as GIF exists independently
of SVM, and allow userspace to restore nested state with GIF=0
- Treat exit_code as an unsigned 64-bit value through all of KVM
- Add support for fetching SNP certificates from userspace
- Fix a bug where KVM would use vmcb02 instead of vmcb01 when
emulating VMLOAD or VMSAVE on behalf of L2
- Misc fixes and cleanups
x86 selftests:
- Add a regression test for TPR<=>CR8 synchronization and IRQ masking
- Overhaul selftest's MMU infrastructure to genericize stage-2 MMU
support, and extend x86's infrastructure to support EPT and NPT
(for L2 guests)
- Extend several nested VMX tests to also cover nested SVM
- Add a selftest for nested VMLOAD/VMSAVE
- Rework the nested dirty log test, originally added as a regression
test for PML where KVM logged L2 GPAs instead of L1 GPAs, to
improve test coverage and to hopefully make the test easier to
understand and maintain
guest_memfd:
- Remove kvm_gmem_populate()'s preparation tracking and half-baked
hugepage handling. SEV/SNP was the only user of the tracking and it
can do it via the RMP
- Retroactively document and enforce (for SNP) that
KVM_SEV_SNP_LAUNCH_UPDATE and KVM_TDX_INIT_MEM_REGION require the
source page to be 4KiB aligned, to avoid non-trivial complexity for
something that no known VMM seems to be doing and to avoid an API
special case for in-place conversion, which simply can't support
unaligned sources
- When populating guest_memfd memory, GUP the source page in common
code and pass the refcounted page to the vendor callback, instead
of letting vendor code do the heavy lifting. Doing so avoids a
looming deadlock bug with in-place due an AB-BA conflict betwee
mmap_lock and guest_memfd's filemap invalidate lock
Generic:
- Fix a bug where KVM would ignore the vCPU's selected address space
when creating a vCPU-specific mapping of guest memory. Actually
this bug could not be hit even on x86, the only architecture with
multiple address spaces, but it's a bug nevertheless"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (267 commits)
KVM: s390: Increase permitted SE header size to 1 MiB
MAINTAINERS: Replace backup for s390 vfio-pci
KVM: s390: vsie: Fix race in acquire_gmap_shadow()
KVM: s390: vsie: Fix race in walk_guest_tables()
KVM: s390: Use guest address to mark guest page dirty
irqchip/riscv-imsic: Adjust the number of available guest irq files
RISC-V: KVM: Transparent huge page support
RISC-V: KVM: selftests: Add Zalasr extensions to get-reg-list test
RISC-V: KVM: Allow Zalasr extensions for Guest/VM
KVM: riscv: selftests: Add riscv vm satp modes
KVM: riscv: selftests: add Zilsd and Zclsd extension to get-reg-list test
riscv: KVM: allow Zilsd and Zclsd extensions for Guest/VM
RISC-V: KVM: Skip IMSIC update if vCPU IMSIC state is not initialized
RISC-V: KVM: Fix null pointer dereference in kvm_riscv_aia_imsic_rw_attr()
RISC-V: KVM: Fix null pointer dereference in kvm_riscv_aia_imsic_has_attr()
RISC-V: KVM: Remove unnecessary 'ret' assignment
KVM: s390: Add explicit padding to struct kvm_s390_keyop
KVM: LoongArch: selftests: Add steal time test case
LoongArch: KVM: Add paravirt vcpu_is_preempted() support in guest side
LoongArch: KVM: Add paravirt preempt feature in hypervisor side
...
- two signal handling fixes
- dynamic addition of virtio devices
- and a single code cleanup
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Merge tag 'uml-for-7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/uml/linux
Pull UML updates from Johannes Berg:
"UML was _really_ quiet, with just four small commits:
- two signal handling fixes
- dynamic addition of virtio devices
- a single code cleanup"
* tag 'uml-for-7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/uml/linux:
arch/um: remove unused varible err in remove_files_and_dir()
um: virtio_uml: Support adding devices via mconsole
um: Handle SIGCHLD in seccomp mode like other IRQ signals
um: Preserve errno within signal handler
The current logic to split the 64-bit argument into its 32-bit halves is
byte-order specific and a bit clunky. Use a union instead which is
easier to read and works in all cases.
GCC still generates the same machine code.
While at it, rename the arguments of the __memset64() prototype to
actually reflect their semantics.
Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
After the merge of the alpha and mm trees, this code does not compile,
as a parameter is missing in a call to page_table_check_pte_clear().
The parameter was re-added in commit d7b4b67eb6 ("mm/page_table_check:
reinstate address parameter in [__]page_table_check_pte_clear()").
The alpha-specific code was newly added in commit dd5712f337 ("alpha:
fix user-space corruption during memory compaction").
Fixes: 4cff5c05e0 ("Merge tag 'mm-stable-2026-02-11-19-22' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm")
Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Acked-by: Magnus Lindholm <linmag7@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
- The major feature this release is the support for octal DTR
modes (8D-8D-8D).
- There has been as well a series of conversion to scoped for each OF
child loops.
- Support for Foresee F35SQB002G chips has been added.
Other changes are small fixes.
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Merge tag 'nand/for-7.0' into mtd/next
SPI NAND
- The major feature this release is the support for octal DTR
modes (8D-8D-8D).
- There has been as well a series of conversion to scoped for each OF
child loops.
- Support for Foresee F35SQB002G chips has been added.
Other changes are small fixes.
When registering a second fgraph callback, direct path is disabled and
array loop is used instead. When ftrace_graph_active falls back to one,
we try to re-enable direct mode via ftrace_graph_enable_direct(true, ...).
But ftrace_graph_enable_direct() incorrectly disables the static key
rather than enabling it. This leaves fgraph_do_direct permanently off
after first multi-callback transition, so direct fast mode is never
restored.
Cc: stable@vger.kernel.org
Link: https://patch.msgid.link/20260213142932519cuWSpEXeS4-UnCvNXnK2P@zte.com.cn
Fixes: cc60ee813b ("function_graph: Use static_call and branch to optimize entry function")
Signed-off-by: Shengming Hu <hu.shengming@zte.com.cn>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
- Add support for control flow integrity for userspace processes.
This is based on the standard RISC-V ISA extensions Zicfiss and
Zicfilp
- Improve ptrace behavior regarding vector registers, and add some selftests
- Optimize our strlen() assembly
- Enable the ISO-8859-1 code page as built-in, similar to ARM64, for EFI
volume mounting
- Clean up some code slightly, including defining copy_user_page() as
copy_page() rather than memcpy(), aligning us with other
architectures; and using max3() to slightly simplify an expression
in riscv_iommu_init_check()
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Merge tag 'riscv-for-linus-7.0-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V updates from Paul Walmsley:
- Add support for control flow integrity for userspace processes.
This is based on the standard RISC-V ISA extensions Zicfiss and
Zicfilp
- Improve ptrace behavior regarding vector registers, and add some
selftests
- Optimize our strlen() assembly
- Enable the ISO-8859-1 code page as built-in, similar to ARM64, for
EFI volume mounting
- Clean up some code slightly, including defining copy_user_page() as
copy_page() rather than memcpy(), aligning us with other
architectures; and using max3() to slightly simplify an expression
in riscv_iommu_init_check()
* tag 'riscv-for-linus-7.0-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (42 commits)
riscv: lib: optimize strlen loop efficiency
selftests: riscv: vstate_exec_nolibc: Use the regular prctl() function
selftests: riscv: verify ptrace accepts valid vector csr values
selftests: riscv: verify ptrace rejects invalid vector csr inputs
selftests: riscv: verify syscalls discard vector context
selftests: riscv: verify initial vector state with ptrace
selftests: riscv: test ptrace vector interface
riscv: ptrace: validate input vector csr registers
riscv: csr: define vtype register elements
riscv: vector: init vector context with proper vlenb
riscv: ptrace: return ENODATA for inactive vector extension
kselftest/riscv: add kselftest for user mode CFI
riscv: add documentation for shadow stack
riscv: add documentation for landing pad / indirect branch tracking
riscv: create a Kconfig fragment for shadow stack and landing pad support
arch/riscv: add dual vdso creation logic and select vdso based on hw
arch/riscv: compile vdso with landing pad and shadow stack note
riscv: enable kernel access to shadow stack memory via the FWFT SBI call
riscv: add kernel command line option to opt out of user CFI
riscv/hwprobe: add zicfilp / zicfiss enumeration in hwprobe
...
New Features:
* Use an LRU list for returning unused delegations
* Introduce a KConfig option to disable NFS v4.0 and make NFS v4.1 the default
Bugfixes:
* NFS/localio: Handle short writes by retrying
* NFS/localio: prevent direct reclaim recursion into NFS via nfs_writepages
* NFS/localio: use GFP_NOIO and non-memreclaim workqueue in nfs_local_commit
* NFS/localio: remove -EAGAIN handling in nfs_local_doio()
* pNFS: fix a missing wake up while waiting on NFS_LAYOUT_DRAIN
* fs/nfs: Fix a readdir slow-start regression
* SUNRPC: fix gss_auth kref leak in gss_alloc_msg error path
Other Cleanups and Improvements:
* A few other NFS/localio cleanups
* Various other delegation handling cleanups from Christoph
* Unify security_inode_listsecurity() calls
* Improvements to NFSv4 lease handling
* Clean up SUNRPC *_debug fields when CONFIG_SUNRPC_DEBUG is not set
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Merge tag 'nfs-for-7.0-1' of git://git.linux-nfs.org/projects/anna/linux-nfs
Pull NFS client updates from Anna Schumaker:
"New Features:
- Use an LRU list for returning unused delegations
- Introduce a KConfig option to disable NFS v4.0 and make NFS v4.1
the default
Bugfixes:
- NFS/localio:
- Handle short writes by retrying
- Prevent direct reclaim recursion into NFS via nfs_writepages
- Use GFP_NOIO and non-memreclaim workqueue in nfs_local_commit
- Remove -EAGAIN handling in nfs_local_doio()
- pNFS: fix a missing wake up while waiting on NFS_LAYOUT_DRAIN
- fs/nfs: Fix a readdir slow-start regression
- SUNRPC: fix gss_auth kref leak in gss_alloc_msg error path
Other cleanups and improvements:
- A few other NFS/localio cleanups
- Various other delegation handling cleanups from Christoph
- Unify security_inode_listsecurity() calls
- Improvements to NFSv4 lease handling
- Clean up SUNRPC *_debug fields when CONFIG_SUNRPC_DEBUG is not set"
* tag 'nfs-for-7.0-1' of git://git.linux-nfs.org/projects/anna/linux-nfs: (60 commits)
SUNRPC: fix gss_auth kref leak in gss_alloc_msg error path
nfs: nfs4proc: Convert comma to semicolon
SUNRPC: Change list definition method
sunrpc: rpc_debug and others are defined even if CONFIG_SUNRPC_DEBUG unset
NFSv4: limit lease period in nfs4_set_lease_period()
NFSv4: pass lease period in seconds to nfs4_set_lease_period()
nfs: unify security_inode_listsecurity() calls
fs/nfs: Fix readdir slow-start regression
pNFS: fix a missing wake up while waiting on NFS_LAYOUT_DRAIN
NFS: fix delayed delegation return handling
NFS: simplify error handling in nfs_end_delegation_return
NFS: fold nfs_abort_delegation_return into nfs_end_delegation_return
NFS: remove the delegation == NULL check in nfs_end_delegation_return
NFS: use bool for the issync argument to nfs_end_delegation_return
NFS: return void from ->return_delegation
NFS: return void from nfs4_inode_make_writeable
NFS: Merge CONFIG_NFS_V4_1 with CONFIG_NFS_V4
NFS: Add a way to disable NFS v4.0 via KConfig
NFS: Move sequence slot operations into minorversion operations
NFS: Pass a struct nfs_client to nfs4_init_sequence()
...
People keep removing generated files from .gitignore files even when the
files stay around. Please don't do that: just because the file is no
longer being generated doesn't make it magically go away, and doesn't
make it suddenly be something that should now not be ignored any more.
Fixes: dd2c6ec24f ("selftests/mm: remove virtual_address_range test")
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: SeongJae Park <sj@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
- Cleanup IRQ masking in the handling of completed report zones
commands (Niklas).
- Improve the handling of Thunderbolt attached devices to speed up
device removal (Henry).
- Several patches to generalize the existing max_sec quirks to
facilitates quirking the maximum command size of buggy drives, many
of which have recently showed up with the recent increase of the
default max_sectors block limit (Niklas).
- Cleanup the ahci-platform and sata dt-bindings schema (Rob,
Manivannan).
- Improve device node scan in the ahci-dwc driver (Krzysztof).
- Remove clang W=1 warnings with the ahci-imx and ahci-xgene drivers
(Krzysztof).
- Fix a long standing potential command starvation situation with
non-NCQ commands issued when NCQ commands are on-going (me).
- Limit max_sectors to 8191 on the INTEL SSDSC2KG480G8 SSD (Niklas).
- Remove Vesa Local Bus (VLB) support in the pata_legacy driver
(Ethan).
- Simple fixes in the pata_cypress (typo) and pata_ftide010 (timing)
drivers (Ethan, Linus W.)
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Merge tag 'ata-6.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/libata/linux
Pull ATA updates from Damien Le Moal:
- Cleanup IRQ masking in the handling of completed report zones
commands (Niklas)
- Improve the handling of Thunderbolt attached devices to speed up
device removal (Henry)
- Several patches to generalize the existing max_sec quirks to
facilitates quirking the maximum command size of buggy drives, many
of which have recently showed up with the recent increase of the
default max_sectors block limit (Niklas)
- Cleanup the ahci-platform and sata dt-bindings schema (Rob,
Manivannan)
- Improve device node scan in the ahci-dwc driver (Krzysztof)
- Remove clang W=1 warnings with the ahci-imx and ahci-xgene drivers
(Krzysztof)
- Fix a long standing potential command starvation situation with
non-NCQ commands issued when NCQ commands are on-going (me)
- Limit max_sectors to 8191 on the INTEL SSDSC2KG480G8 SSD (Niklas)
- Remove Vesa Local Bus (VLB) support in the pata_legacy driver (Ethan)
- Simple fixes in the pata_cypress (typo) and pata_ftide010 (timing)
drivers (Ethan, Linus W)
* tag 'ata-6.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/libata/linux:
ata: pata_ftide010: Fix some DMA timings
ata: pata_cypress: fix typo in error message
ata: pata_legacy: remove VLB support
ata: libata-core: Quirk INTEL SSDSC2KG480G8 max_sectors
dt-bindings: ata: sata: Document the graph port
ata: libata-scsi: avoid Non-NCQ command starvation
ata: libata-scsi: refactor ata_scsi_translate()
ata: ahci-xgene: Fix Wvoid-pointer-to-enum-cast warning
ata: ahci-imx: Fix Wvoid-pointer-to-enum-cast warning
ata: ahci-dwc: Simplify with scoped for each OF child loop
dt-bindings: ata: ahci-platform: Drop unnecessary select schema
ata: libata: Allow more quirks
ata: libata: Add libata.force parameter max_sec
ata: libata: Add support to parse equal sign in libata.force
ata: libata: Change libata.force to use the generic ATA_QUIRK_MAX_SEC quirk
ata: libata: Add ata_force_get_fe_for_dev() helper
ata: libata: Add ATA_QUIRK_MAX_SEC and convert all device quirks
ata: libata: avoid long timeouts on hot-unplugged SATA DAS
ata: libata-scsi: Remove superfluous local_irq_save()
Usual smallish cycle:
- Various code improvements in irdma, rtrs, qedr, ocrdma, irdma, rxe
- Small driver improvements and minor bug fixes to hns, mlx5, rxe, mana,
mlx5, irdma
- Robusness improvements in completion processing for EFA
- New query_port_speed() verb to move past limited IBA defined speed steps
- Support for SG_GAPS in rts and many other small improvements
- Rare list corruption fix in iwcm
- Better support different page sizes in rxe
- Device memory support for mana
- Direct bio vec to kernel MR for use by NFS-RDMA
- QP rate limiting for bnxt_re
- Remote triggerable NULL pointer crash in siw
- DMA-buf exporter support for RDMA mmaps like doorbells
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
Pull rdma updates from Jason Gunthorpe:
"Usual smallish cycle. The NFS biovec work to push it down into RDMA
instead of indirecting through a scatterlist is pretty nice to see,
been talked about for a long time now.
- Various code improvements in irdma, rtrs, qedr, ocrdma, irdma, rxe
- Small driver improvements and minor bug fixes to hns, mlx5, rxe,
mana, mlx5, irdma
- Robusness improvements in completion processing for EFA
- New query_port_speed() verb to move past limited IBA defined speed
steps
- Support for SG_GAPS in rts and many other small improvements
- Rare list corruption fix in iwcm
- Better support different page sizes in rxe
- Device memory support for mana
- Direct bio vec to kernel MR for use by NFS-RDMA
- QP rate limiting for bnxt_re
- Remote triggerable NULL pointer crash in siw
- DMA-buf exporter support for RDMA mmaps like doorbells"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (66 commits)
RDMA/mlx5: Implement DMABUF export ops
RDMA/uverbs: Add DMABUF object type and operations
RDMA/uverbs: Support external FD uobjects
RDMA/siw: Fix potential NULL pointer dereference in header processing
RDMA/umad: Reject negative data_len in ib_umad_write
IB/core: Extend rate limit support for RC QPs
RDMA/mlx5: Support rate limit only for Raw Packet QP
RDMA/bnxt_re: Report QP rate limit in debugfs
RDMA/bnxt_re: Report packet pacing capabilities when querying device
RDMA/bnxt_re: Add support for QP rate limiting
MAINTAINERS: Drop RDMA files from Hyper-V section
RDMA/uverbs: Add __GFP_NOWARN to ib_uverbs_unmarshall_recv() kmalloc
svcrdma: use bvec-based RDMA read/write API
RDMA/core: add rdma_rw_max_sge() helper for SQ sizing
RDMA/core: add MR support for bvec-based RDMA operations
RDMA/core: use IOVA-based DMA mapping for bvec RDMA operations
RDMA/core: add bio_vec based RDMA read/write API
RDMA/irdma: Use kvzalloc for paged memory DMA address array
RDMA/rxe: Fix race condition in QP timer handlers
RDMA/mana_ib: Add device‑memory support
...
- A set of commits that introduces cxl_memdev_attach and pave way for
soft reserved handling, type2 accelerator enabling, and LSA 2.0
enabling. All these series require the endpoint driver to settle
before continuing the memdev driver probe.
dax/hmem, e820, resource: Defer Soft Reserved insertion until hmem is ready
cxl/mem: Introduce cxl_memdev_attach for CXL-dependent operation
cxl/mem: Drop @host argument to devm_cxl_add_memdev()
cxl/mem: Convert devm_cxl_add_memdev() to scope-based-cleanup
cxl/port: Arrange for always synchronous endpoint attach
cxl/mem: Arrange for always-synchronous memdev attach
cxl/mem: Fix devm_cxl_memdev_edac_release() confusion
- A set to address CXL port error protocol handling and reporting. The
large patch series was split into 3 parts. Part 1 and 2 are included
here with part 3 coming later. Part 1 consists of a series of code
refactoring to PCI AER sub-system that addresses CXL and also CXL
RAS code to prepare for port error handling. Part 2 refactors the
CXL code to move management of component registers to cxl_port
objects to allow all CXL AER errors to be handled through the
cxl_port hierarchy.
Part 2:
cxl/port: Move endpoint component register management to cxl_port
cxl/port: Map Port RAS registers
cxl/port: Move dport RAS setup to dport add time
cxl/port: Move dport probe operations to a driver event
cxl/port: Move decoder setup before dport creation
cxl/port: Cleanup dport removal with a devres group
cxl/port: Reduce number of @dport variables in cxl_port_add_dport()
cxl/port: Cleanup handling of the nr_dports 0 -> 1 transition
Part 1:
cxl: Update RAS handler interfaces to also support CXL Ports
cxl/mem: Clarify @host for devm_cxl_add_nvdimm()
PCI/AER: Update struct aer_err_info with kernel-doc formatting
PCI/AER: Report CXL or PCIe bus type in AER trace logging
PCI/AER: Use guard() in cxl_rch_handle_error_iter()
PCI/AER: Move CXL RCH error handling to aer_cxl_rch.c
PCI/AER: Update is_internal_error() to be non-static is_aer_internal_error()
PCI/AER: Export pci_aer_unmask_internal_errors()
cxl/pci: Move CXL driver's RCH error handling into core/ras_rch.c
PCI/AER: Replace PCIEAER_CXL symbol with CXL_RAS
cxl/pci: Remove CXL VH handling in CONFIG_PCIEAER_CXL conditional blocks from core/pci.c
PCI: Replace cxl_error_is_native() with pcie_aer_is_native()
cxl/pci: Remove unnecessary CXL RCH handling helper functions
cxl/pci: Remove unnecessary CXL Endpoint handling helper functions
PCI: Introduce pcie_is_cxl()
PCI: Update CXL DVSEC definitions
PCI: Move CXL DVSEC definitions into uapi/linux/pci_regs.h
- A set of patches to provide AMD Zen5 platform address translation for
CXL using ACPI PRMT. Set includes a conventions document to explain
why this is needed and how it's implemented.
cxl: Disable HPA/SPA translation handlers for Normalized Addressing
cxl/region: Factor out code into cxl_region_setup_poison()
cxl/atl: Lock decoders that need address translation
cxl: Enable AMD Zen5 address translation using ACPI PRMT
cxl/acpi: Prepare use of EFI runtime services
cxl: Introduce callback for HPA address ranges translation
cxl/region: Use region data to get the root decoder
cxl/region: Add @hpa_range argument to function cxl_calc_interleave_pos()
cxl/region: Separate region parameter setup and region construction
cxl: Simplify cxl_root_ops allocation and handling
cxl/region: Store HPA range in struct cxl_region
cxl/region: Store root decoder in struct cxl_region
cxl/region: Rename misleading variable name @hpa to @hpa_range
Documentation/driver-api/cxl: ACPI PRM Address Translation Support and AMD Zen5 enablement
cxl, doc: Moving conventions in separate files
cxl, doc: Remove isonum.txt inclusion
- A set of misc CXL patches of fixes, cleanups, and updates. Including
CXL address translation for unaligned MOD3 regions.
cxl: Fix premature commit_end increment on decoder commit failure
cxl/region: Use do_div() for 64-bit modulo operation
cxl/region: Translate HPA to DPA and memdev in unaligned regions
cxl/region: Translate DPA->HPA in unaligned MOD3 regions
cxl/core: Fix cxl_dport debugfs EINJ entries
cxl/acpi: Remove cxl_acpi_set_cache_size()
cxl/hdm: Fix newline character in dev_err() messages
cxl/pci: Remove outdated FIXME comment and BUILD_BUG_ON
Documentation/driver-api/cxl: device hotplug section
Documentation/driver-api/cxl: BIOS/EFI expectation update
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Merge tag 'cxl-for-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl
Pull CXL updates from Dave Jiang:
- Introduce cxl_memdev_attach and pave way for soft reserved handling,
type2 accelerator enabling, and LSA 2.0 enabling. All these series
require the endpoint driver to settle before continuing the memdev
driver probe.
- Address CXL port error protocol handling and reporting.
The large patch series was split into three parts. The first two
parts are included here with the final part coming later.
The first part consists of a series of code refactoring to PCI AER
sub-system that addresses CXL and also CXL RAS code to prepare for
port error handling.
The second part refactors the CXL code to move management of
component registers to cxl_port objects to allow all CXL AER errors
to be handled through the cxl_port hierarchy.
- Provide AMD Zen5 platform address translation for CXL using ACPI
PRMT. This includes a conventions document to explain why this is
needed and how it's implemented.
- Misc CXL patches of fixes, cleanups, and updates. Including CXL
address translation for unaligned MOD3 regions.
[ TLA service: CXL is "Compute Express Link" ]
* tag 'cxl-for-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl: (59 commits)
cxl: Disable HPA/SPA translation handlers for Normalized Addressing
cxl/region: Factor out code into cxl_region_setup_poison()
cxl/atl: Lock decoders that need address translation
cxl: Enable AMD Zen5 address translation using ACPI PRMT
cxl/acpi: Prepare use of EFI runtime services
cxl: Introduce callback for HPA address ranges translation
cxl/region: Use region data to get the root decoder
cxl/region: Add @hpa_range argument to function cxl_calc_interleave_pos()
cxl/region: Separate region parameter setup and region construction
cxl: Simplify cxl_root_ops allocation and handling
cxl/region: Store HPA range in struct cxl_region
cxl/region: Store root decoder in struct cxl_region
cxl/region: Rename misleading variable name @hpa to @hpa_range
Documentation/driver-api/cxl: ACPI PRM Address Translation Support and AMD Zen5 enablement
cxl, doc: Moving conventions in separate files
cxl, doc: Remove isonum.txt inclusion
cxl/port: Unify endpoint and switch port lookup
cxl/port: Move endpoint component register management to cxl_port
cxl/port: Map Port RAS registers
cxl/port: Move dport RAS setup to dport add time
...
- Update outdated mdev comment referencing the renamed
mdev_type_add() function. (Julia Lawall)
- Introduce selftest support for IOMMU mapping of PCI MMIO BARs.
(Alex Mastro)
- Relax selftest assertion relative to differences in huge page
handling between legacy (v1) TYPE1 IOMMU mapping behavior and
the compatibility mode supported by IOMMUFD. (David Matlack)
- Reintroduce memory poison handling support for non-struct-page-
backed memory in the nvgrace-gpu variant driver. (Ankit Agrawal)
- Replace dma_buf_phys_vec with phys_vec to avoid duplicate
structure and semantics. (Leon Romanovsky)
- Add missing upstream bridge locking across PCI function reset,
resolving an assertion failure when secondary bus reset is used
to provide that reset. (Anthony Pighin)
- Fixes to hisi_acc vfio-pci variant driver to resolve corner case
issues related to resets, repeated migration, and error injection
scenarios. (Longfang Liu, Weili Qian)
- Restrict vfio selftest builds to arm64 and x86_64, resolving
compiler warnings on 32-bit archs. (Ted Logan)
- Un-deprecate the fsl-mc vfio bus driver as a new maintainer has
stepped up. (Ioana Ciornei)
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Merge tag 'vfio-v7.0-rc1' of https://github.com/awilliam/linux-vfio
Pull VFIO updates from Alex Williamson:
"A small cycle with the bulk in selftests and reintroducing poison
handling in the nvgrace-gpu driver. The rest are fixes, cleanups, and
some dmabuf structure consolidation.
- Update outdated mdev comment referencing the renamed
mdev_type_add() function (Julia Lawall)
- Introduce selftest support for IOMMU mapping of PCI MMIO BARs (Alex
Mastro)
- Relax selftest assertion relative to differences in huge page
handling between legacy (v1) TYPE1 IOMMU mapping behavior and the
compatibility mode supported by IOMMUFD (David Matlack)
- Reintroduce memory poison handling support for non-struct-page-
backed memory in the nvgrace-gpu variant driver (Ankit Agrawal)
- Replace dma_buf_phys_vec with phys_vec to avoid duplicate structure
and semantics (Leon Romanovsky)
- Add missing upstream bridge locking across PCI function reset,
resolving an assertion failure when secondary bus reset is used to
provide that reset (Anthony Pighin)
- Fixes to hisi_acc vfio-pci variant driver to resolve corner case
issues related to resets, repeated migration, and error injection
scenarios (Longfang Liu, Weili Qian)
- Restrict vfio selftest builds to arm64 and x86_64, resolving
compiler warnings on 32-bit archs (Ted Logan)
- Un-deprecate the fsl-mc vfio bus driver as a new maintainer has
stepped up (Ioana Ciornei)"
* tag 'vfio-v7.0-rc1' of https://github.com/awilliam/linux-vfio:
vfio/fsl-mc: add myself as maintainer
vfio: selftests: only build tests on arm64 and x86_64
hisi_acc_vfio_pci: fix the queue parameter anomaly issue
hisi_acc_vfio_pci: resolve duplicate migration states
hisi_acc_vfio_pci: update status after RAS error
hisi_acc_vfio_pci: fix VF reset timeout issue
vfio/pci: Lock upstream bridge for vfio_pci_core_disable()
types: reuse common phys_vec type instead of DMABUF open‑coded variant
vfio/nvgrace-gpu: register device memory for poison handling
mm: add stubs for PFNMAP memory failure registration functions
vfio: selftests: Drop IOMMU mapping size assertions for VFIO_TYPE1_IOMMU
vfio: selftests: Add vfio_dma_mapping_mmio_test
vfio: selftests: Align BAR mmaps for efficient IOMMU mapping
vfio: selftests: Centralize IOMMU mode name definitions
vfio/mdev: update outdated comment
Usual driver updates (qla2xxx, mpi3mr, mpt3sas, ufs) plus assorted
cleanups and fixes. The biggest core change is the massive code
motion in the sd driver to remove forward declarations and the most
significant change is to enumify the queuecommand return.
Signed-off-by: James E.J. Bottomley <James.Bottomley@HansenPartnership.com>
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Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI updates from James Bottomley:
"Usual driver updates (qla2xxx, mpi3mr, mpt3sas, ufs) plus assorted
cleanups and fixes.
The biggest core change is the massive code motion in the sd driver to
remove forward declarations and the most significant change is to
enumify the queuecommand return"
* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (78 commits)
scsi: csiostor: Fix dereference of null pointer rn
scsi: buslogic: Reduce stack usage
scsi: ufs: host: mediatek: Require CONFIG_PM
scsi: ufs: mediatek: Fix page faults in ufs_mtk_clk_scale() trace event
scsi: smartpqi: Fix memory leak in pqi_report_phys_luns()
scsi: mpi3mr: Make driver probing asynchronous
scsi: ufs: core: Flush exception handling work when RPM level is zero
scsi: efct: Use IRQF_ONESHOT and default primary handler
scsi: ufs: core: Use a host-wide tagset in SDB mode
scsi: qla2xxx: target: Add WQ_PERCPU to alloc_workqueue() users
scsi: qla2xxx: Add WQ_PERCPU to alloc_workqueue() users
scsi: qla4xxx: Add WQ_PERCPU to alloc_workqueue() users
scsi: mpi3mr: Driver version update to 8.17.0.3.50
scsi: mpi3mr: Fixed the W=1 compilation warning
scsi: mpi3mr: Record and report controller firmware faults
scsi: mpi3mr: Update MPI Headers to revision 39
scsi: mpi3mr: Use negotiated link rate from DevicePage0
scsi: mpi3mr: Avoid redundant diag-fault resets
scsi: mpi3mr: Rename log data save helper to reflect threaded/BH context
scsi: mpi3mr: Add module parameter to control threaded IRQ polling
...
When CONFIG_DEBUG_OBJECTS_FREE is enabled,
debug_check_no_{obj,locks}_freed() functions are called.
Since both of them spin on a lock, they are not safe to be called if the
FPI_TRYLOCK flag is specified. This leads to a lockdep splat:
================================
WARNING: inconsistent lock state
6.19.0-rc5-slab-for-next+ #326 Tainted: G N
--------------------------------
inconsistent {INITIAL USE} -> {IN-NMI} usage.
kunit_try_catch/9046 [HC2[2]:SC0[0]:HE0:SE1] takes:
ffffffff84ed6bf8 (&obj_hash[i].lock){-.-.}-{2:2}, at: __debug_check_no_obj_freed+0xe0/0x300
{INITIAL USE} state was registered at:
lock_acquire+0xd9/0x2f0
_raw_spin_lock_irqsave+0x4c/0x80
__debug_object_init+0x9d/0x1f0
debug_object_init+0x34/0x50
__init_work+0x28/0x40
init_cgroup_housekeeping+0x151/0x210
init_cgroup_root+0x3d/0x140
cgroup_init_early+0x30/0x240
start_kernel+0x3e/0xcd0
x86_64_start_reservations+0x18/0x30
x86_64_start_kernel+0xf3/0x140
common_startup_64+0x13e/0x148
irq event stamp: 2998
hardirqs last enabled at (2997): [<ffffffff8298b77a>] exc_nmi+0x11a/0x240
hardirqs last disabled at (2998): [<ffffffff8298b991>] sysvec_irq_work+0x11/0x110
softirqs last enabled at (1416): [<ffffffff813c1f72>] __irq_exit_rcu+0x132/0x1c0
softirqs last disabled at (1303): [<ffffffff813c1f72>] __irq_exit_rcu+0x132/0x1c0
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0
----
lock(&obj_hash[i].lock);
<Interrupt>
lock(&obj_hash[i].lock);
*** DEADLOCK ***
Rename free_pages_prepare() to __free_pages_prepare(), add an fpi_t
parameter, and skip those checks if FPI_TRYLOCK is set. To keep the fpi_t
definition in mm/page_alloc.c, add a wrapper function free_pages_prepare()
that always passes FPI_NONE and use it in mm/compaction.c.
Link: https://lkml.kernel.org/r/20260209062639.16577-1-harry.yoo@oracle.com
Fixes: 8c57b687e8 ("mm, bpf: Introduce free_pages_nolock()")
Signed-off-by: Harry Yoo <harry.yoo@oracle.com>
Reviewed-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Zi Yan <ziy@nvidia.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Brendan Jackman <jackmanb@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Shakeel Butt <shakeel.butt@linux.dev>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Commit a833a693a4 ("mm: hugetlb: fix incorrect fallback for subpool")
fixed an underflow error for hstate->resv_huge_pages caused by incorrectly
attributing globally requested pages to the subpool's reservation.
Unfortunately, this fix also introduced the opposite problem, which would
leave spool->used_hpages elevated if the globally requested pages could
not be acquired. This is because while a subpool's reserve pages only
accounts for what is requested and allocated from the subpool, its "used"
counter keeps track of what is consumed in total, both from the subpool
and globally. Thus, we need to adjust spool->used_hpages in the other
direction, and make sure that globally requested pages are uncharged from
the subpool's used counter.
Each failed allocation attempt increments the used_hpages counter by how
many pages were requested from the global pool. Ultimately, this renders
the subpool unusable, as used_hpages approaches the max limit.
The issue can be reproduced as follows:
1. Allocate 4 hugetlb pages
2. Create a hugetlb mount with max=4, min=2
3. Consume 2 pages globally
4. Request 3 pages from the subpool (2 from subpool + 1 from global)
4.1 hugepage_subpool_get_pages(spool, 3) succeeds.
used_hpages += 3
4.2 hugetlb_acct_memory(h, 1) fails: no global pages left
used_hpages -= 2
5. Subpool now has used_hpages = 1, despite not being able to
successfully allocate any hugepages. It believes it can now only
allocate 3 more hugepages, not 4.
With each failed allocation attempt incrementing the used counter, the
subpool eventually reaches a point where its used counter equals its
max counter. At that point, any future allocations that try to
allocate hugeTLB pages from the subpool will fail, despite the subpool
not having any of its hugeTLB pages consumed by any user.
Once this happens, there is no way to make the subpool usable again,
since there is no way to decrement the used counter as no process is
really consuming the hugeTLB pages.
The underflow issue that the original commit fixes still remains fixed
as well.
Without this fix, used_hpages would keep on leaking if
hugetlb_acct_memory() fails.
Link: https://lkml.kernel.org/r/20260116204037.2270096-1-joshua.hahnjy@gmail.com
Fixes: a833a693a4 ("mm: hugetlb: fix incorrect fallback for subpool")
Signed-off-by: Joshua Hahn <joshua.hahnjy@gmail.com>
Acked-by: Usama Arif <usama.arif@linux.dev>
Cc: David Hildenbrand <david@kernel.org>
Cc: "Liam R. Howlett" <Liam.Howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Ma Wupeng <mawupeng1@huawei.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Shakeel Butt <shakeel.butt@linux.dev>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Waiman Long <longman@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Merge tag 'for-7.0/io_uring-zcrx-large-buffers-20260206' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux
Pull io_uring large rx buffer support from Jens Axboe:
"Now that the networking updates are upstream, here's the support for
large buffers for zcrx.
Using larger (bigger than 4K) rx buffers can increase the effiency of
zcrx. For example, it's been shown that using 32K buffers can decrease
CPU usage by ~30% compared to 4K buffers"
* tag 'for-7.0/io_uring-zcrx-large-buffers-20260206' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux:
io_uring/zcrx: implement large rx buffer support
* nvdimm: virtio_pmem: serialize flush requests
* drivers/nvdimm: Use local kmaps
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Merge tag 'libnvdimm-for-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
Pull libnvdimm updates from Ira Weiny:
"A kmap conversion and a bug fix this go around:
- drivers/nvdimm: Use local kmaps
- nvdimm: virtio_pmem: serialize flush requests"
* tag 'libnvdimm-for-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
nvdimm: virtio_pmem: serialize flush requests
drivers/nvdimm: Use local kmaps
- Remove unused function declarations
Some functions were removed in recent code consolidation 6.18, but
their prototypes were not removed from headers. Remove them.
- Set stop threshold after enabling instances
Prefer recording samples without stopping on them on the start of
tracing to stopping on samples that are never recorded. This fixes
flakiness of some RTLA tests and unifies behavior of sample collection
between tracefs mode and BPF mode.
- Consolidate usage help message implementation
RTLA tools (osnoise-top, osnoise-hist, timerlat-top, timerlat-hist)
each implement usage help individually. Move common logic between
them into a new function to reduce code duplication.
- Add BPF actions feature
Add option --bpf-action to attach a BPF program (passed as filename of
its ELF representation) to be executed via BPF tail call at latency
threshold.
- Consolidate command line option parsing
Each RTLA tool implements the parsing of command line options
individually. Now that we have a common structure for parameters,
unify the parsing of those options common among all four tools into
one function.
- De-duplicate cgroup common code
Two functions in utils.c, setting cgroup for comm and setting cgroup
for pid, duplicate code for constructing the cgroup path. Extract it
to a new helper function.
- String and error handling fixes and cleanups
There were several instances of unsafe string and error handling that
could cause invalid memory access; fix them. Also, remove a few unused
headers, update .gitignore, and deduplicate code.
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Merge tag 'trace-rtla-v7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull RTLA updates from Steven Rostedt:
- Remove unused function declarations
Some functions were removed in recent code consolidation 6.18, but
their prototypes were not removed from headers. Remove them.
- Set stop threshold after enabling instances
Prefer recording samples without stopping on them on the start of
tracing to stopping on samples that are never recorded. This fixes
flakiness of some RTLA tests and unifies behavior of sample
collection between tracefs mode and BPF mode.
- Consolidate usage help message implementation
RTLA tools (osnoise-top, osnoise-hist, timerlat-top, timerlat-hist)
each implement usage help individually. Move common logic between
them into a new function to reduce code duplication.
- Add BPF actions feature
Add option --bpf-action to attach a BPF program (passed as filename
of its ELF representation) to be executed via BPF tail call at
latency threshold.
- Consolidate command line option parsing
Each RTLA tool implements the parsing of command line options
individually. Now that we have a common structure for parameters,
unify the parsing of those options common among all four tools into
one function.
- De-duplicate cgroup common code
Two functions in utils.c, setting cgroup for comm and setting cgroup
for pid, duplicate code for constructing the cgroup path. Extract it
to a new helper function.
- String and error handling fixes and cleanups
There were several instances of unsafe string and error handling that
could cause invalid memory access; fix them. Also, remove a few
unused headers, update .gitignore, and deduplicate code.
* tag 'trace-rtla-v7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: (30 commits)
rtla: Fix parse_cpu_set() bug introduced by strtoi()
rtla: Fix parse_cpu_set() return value documentation
rtla: Ensure null termination after read operations in utils.c
rtla: Make stop_tracing variable volatile
rtla: Add generated output files to gitignore
rtla: Fix NULL pointer dereference in actions_parse
rtla: Remove unused headers
rtla: Remove redundant memset after calloc
rtla: Use standard exit codes for result enum
rtla: Replace atoi() with a robust strtoi()
rtla: Introduce for_each_action() helper
tools/rtla: Deduplicate cgroup path opening code
tools/rtla: Consolidate -H/--house-keeping option parsing
tools/rtla: Consolidate -P/--priority option parsing
tools/rtla: Consolidate -e/--event option parsing
tools/rtla: Consolidate -d/--duration option parsing
tools/rtla: Consolidate -D/--debug option parsing
tools/rtla: Consolidate -C/--cgroup option parsing
tools/rtla: Consolidate -c/--cpus option parsing
tools/rtla: Add common_parse_options()
...
- Refactor da_monitor to minimise macros
Complete refactor of da_monitor.h to reduce reliance on macros
generating functions. Use generic static functions and uses the
preprocessor only when strictly necessary (e.g. for tracepoint
handlers).
The change essentially relies on functions with generic names (e.g.
da_handle) instead of monitor-specific as well adding the need to
define constant (e.g. MONITOR_NAME, MONITOR_TYPE) before including the
header rather than calling macros that would define functions.
Also adapt monitors and documentation accordingly.
- Cleanup DA code generation scripts
Clean up functions in dot2c removing reimplementations of trivial
library functions (__buff_to_string) and removing some other unused
intermediate steps.
- Annotate functions with types in the rvgen python scripts
- Remove superfluous assignments and cleanup generated code
The rvgen scripts generate a superfluous assignment to 0 for enum
variables and don't add commas to the last elements, which is against
the kernel coding standards. Change the generation process for a
better compliance and slightly simpler logic.
- Remove superfluous declarations from generated code
The monitor container source files contained a declaration and a
definition for the rv_monitor variable. The former is superfluous and
was removed.
- Fix reference to outdated documentation
s/da_monitor_synthesis.rst/monitor_synthesis.rst in comment in
da_monitor.h
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Merge tag 'trace-rv-v7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull runtime verifier updates from Steven Rostedt:
- Refactor da_monitor to minimize macros
Complete refactor of da_monitor.h to reduce reliance on macros
generating functions. Use generic static functions and uses the
preprocessor only when strictly necessary (e.g. for tracepoint
handlers).
The change essentially relies on functions with generic names (e.g.
da_handle) instead of monitor-specific as well adding the need to
define constant (e.g. MONITOR_NAME, MONITOR_TYPE) before including
the header rather than calling macros that would define functions.
Also adapt monitors and documentation accordingly.
- Cleanup DA code generation scripts
Clean up functions in dot2c removing reimplementations of trivial
library functions (__buff_to_string) and removing some other unused
intermediate steps.
- Annotate functions with types in the rvgen python scripts
- Remove superfluous assignments and cleanup generated code
The rvgen scripts generate a superfluous assignment to 0 for enum
variables and don't add commas to the last elements, which is against
the kernel coding standards. Change the generation process for a
better compliance and slightly simpler logic.
- Remove superfluous declarations from generated code
The monitor container source files contained a declaration and a
definition for the rv_monitor variable. The former is superfluous and
was removed.
- Fix reference to outdated documentation
s/da_monitor_synthesis.rst/monitor_synthesis.rst in comment in
da_monitor.h
* tag 'trace-rv-v7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
rv: Fix documentation reference in da_monitor.h
verification/rvgen: Remove unused variable declaration from containers
verification/dot2c: Remove superfluous enum assignment and add last comma
verification/dot2c: Remove __buff_to_string() and cleanup
verification/rvgen: Annotate DA functions with types
verification/rvgen: Adapt dot2k and templates after refactoring da_monitor.h
Documentation/rv: Adapt documentation after da_monitor refactoring
rv: Cleanup da_monitor after refactor
rv: Refactor da_monitor to minimise macros
The main focus for this series has been to improve OpenRISC
kernel out-of-the-box support for FPGA dev boards.
- Adds device tree configurations for De0 Nano single and
multicore configurations.
- Fixes bug in OpenRISC SMP preventing the kernel from running on FPGA
boards, due to IPIs not being unmasked on secondary CPUs in some
configurations.
- Picked up a fix from Brian Masney defining the nop() macro to fix
build failures on OpenRISC for drivers using the nop() macro.
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Merge tag 'for-linus' of https://github.com/openrisc/linux
Pull OpenRISC updates from Stafford Horne:
"The main focus for this series has been to improve OpenRISC kernel
out-of-the-box support for FPGA dev boards.
- Add device tree configurations for De0 Nano single and multicore
configurations
- Fix bug in OpenRISC SMP preventing the kernel from running on FPGA
boards, due to IPIs not being unmasked on secondary CPUs in some
configurations
- Pick up a fix from Brian Masney defining the nop() macro to fix
build failures on OpenRISC for drivers using it"
* tag 'for-linus' of https://github.com/openrisc/linux:
openrisc: define arch-specific version of nop()
openrisc: dts: Add de0 nano multicore config and devicetree
openrisc: dts: Split simple smp dts to dts and dtsi
openrisc: Fix IPIs on simple multicore systems
openrisc: dts: Add de0 nano config and devicetree
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Merge tag 'configfs-for-v7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/a.hindborg/linux
Pull configfs updates from Andreas Hindborg:
- Switch the configfs rust bindings to use c string literals provided
by the compiler, rather than a macro
- A follow up on constifying `configfs_item_operations`, applying the
change to the configfs sample
* tag 'configfs-for-v7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/a.hindborg/linux:
samples: configfs: Constify struct configfs_item_operations and configfs_group_operations
rust: configfs: replace `kernel::c_str!` with C-Strings
Total patches: 107
Reviews/patch: 1.07
Reviewed rate: 67%
- The 2 patch series "ocfs2: give ocfs2 the ability to reclaim
suballocator free bg" from Heming Zhao saves disk space by teaching
ocfs2 to reclaim suballocator block group space.
- The 4 patch series "Add ARRAY_END(), and use it to fix off-by-one
bugs" from Alejandro Colomar adds the ARRAY_END() macro and uses it in
various places.
- The 2 patch series "vmcoreinfo: support VMCOREINFO_BYTES larger than
PAGE_SIZE" from Pnina Feder makes the vmcore code future-safe, if
VMCOREINFO_BYTES ever exceeds the page size.
- The 7 patch series "kallsyms: Prevent invalid access when showing
module buildid" from Petr Mladek cleans up kallsyms code related to
module buildid and fixes an invalid access crash when printing
backtraces.
- The 3 patch series "Address page fault in
ima_restore_measurement_list()" from Harshit Mogalapalli fixes a
kexec-related crash that can occur when booting the second-stage kernel
on x86.
- The 6 patch series "kho: ABI headers and Documentation updates" from
Mike Rapoport updates the kexec handover ABI documentation.
- The 4 patch series "Align atomic storage" from Finn Thain adds the
__aligned attribute to atomic_t and atomic64_t definitions to get
natural alignment of both types on csky, m68k, microblaze, nios2,
openrisc and sh.
- The 2 patch series "kho: clean up page initialization logic" from
Pratyush Yadav simplifies the page initialization logic in
kho_restore_page().
- The 6 patch series "Unload linux/kernel.h" from Yury Norov moves
several things out of kernel.h and into more appropriate places.
- The 7 patch series "don't abuse task_struct.group_leader" from Oleg
Nesterov removes the usage of ->group_leader when it is "obviously
unnecessary".
- The 5 patch series "list private v2 & luo flb" from Pasha Tatashin
adds some infrastructure improvements to the live update orchestrator.
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Merge tag 'mm-nonmm-stable-2026-02-12-10-48' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull non-MM updates from Andrew Morton:
- "ocfs2: give ocfs2 the ability to reclaim suballocator free bg" saves
disk space by teaching ocfs2 to reclaim suballocator block group
space (Heming Zhao)
- "Add ARRAY_END(), and use it to fix off-by-one bugs" adds the
ARRAY_END() macro and uses it in various places (Alejandro Colomar)
- "vmcoreinfo: support VMCOREINFO_BYTES larger than PAGE_SIZE" makes
the vmcore code future-safe, if VMCOREINFO_BYTES ever exceeds the
page size (Pnina Feder)
- "kallsyms: Prevent invalid access when showing module buildid" cleans
up kallsyms code related to module buildid and fixes an invalid
access crash when printing backtraces (Petr Mladek)
- "Address page fault in ima_restore_measurement_list()" fixes a
kexec-related crash that can occur when booting the second-stage
kernel on x86 (Harshit Mogalapalli)
- "kho: ABI headers and Documentation updates" updates the kexec
handover ABI documentation (Mike Rapoport)
- "Align atomic storage" adds the __aligned attribute to atomic_t and
atomic64_t definitions to get natural alignment of both types on
csky, m68k, microblaze, nios2, openrisc and sh (Finn Thain)
- "kho: clean up page initialization logic" simplifies the page
initialization logic in kho_restore_page() (Pratyush Yadav)
- "Unload linux/kernel.h" moves several things out of kernel.h and into
more appropriate places (Yury Norov)
- "don't abuse task_struct.group_leader" removes the usage of
->group_leader when it is "obviously unnecessary" (Oleg Nesterov)
- "list private v2 & luo flb" adds some infrastructure improvements to
the live update orchestrator (Pasha Tatashin)
* tag 'mm-nonmm-stable-2026-02-12-10-48' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (107 commits)
watchdog/hardlockup: simplify perf event probe and remove per-cpu dependency
procfs: fix missing RCU protection when reading real_parent in do_task_stat()
watchdog/softlockup: fix sample ring index wrap in need_counting_irqs()
kcsan, compiler_types: avoid duplicate type issues in BPF Type Format
kho: fix doc for kho_restore_pages()
tests/liveupdate: add in-kernel liveupdate test
liveupdate: luo_flb: introduce File-Lifecycle-Bound global state
liveupdate: luo_file: Use private list
list: add kunit test for private list primitives
list: add primitives for private list manipulations
delayacct: fix uapi timespec64 definition
panic: add panic_force_cpu= parameter to redirect panic to a specific CPU
netclassid: use thread_group_leader(p) in update_classid_task()
RDMA/umem: don't abuse current->group_leader
drm/pan*: don't abuse current->group_leader
drm/amd: kill the outdated "Only the pthreads threading model is supported" checks
drm/amdgpu: don't abuse current->group_leader
android/binder: use same_thread_group(proc->tsk, current) in binder_mmap()
android/binder: don't abuse current->group_leader
kho: skip memoryless NUMA nodes when reserving scratch areas
...
Everything:
Total patches: 325
Reviews/patch: 1.39
Reviewed rate: 72%
Excluding DAMON:
Total patches: 262
Reviews/patch: 1.63
Reviewed rate: 82%
Excluding DAMON and zram:
Total patches: 248
Reviews/patch: 1.72
Reviewed rate: 86%
- The 14 patch series "powerpc/64s: do not re-activate batched TLB
flush" from Alexander Gordeev makes arch_{enter|leave}_lazy_mmu_mode()
nest properly.
It adds a generic enter/leave layer and switches architectures to use
it. Various hacks were removed in the process.
- The 7 patch series "zram: introduce compressed data writeback" from
Richard Chang and Sergey Senozhatsky implements data compression for
zram writeback.
- The 8 patch series "mm: folio_zero_user: clear page ranges" from David
Hildenbrand adds clearing of contiguous page ranges for hugepages.
Large improvements during demand faulting are demonstrated.
- The 2 patch series "memcg cleanups" from Chen Ridong tideis up some
memcg code.
- The 12 patch series "mm/damon: introduce {,max_}nr_snapshots and
tracepoint for damos stats" from SeongJae Park improves DAMOS stat's
provided information, deterministic control, and readability.
- The 3 patch series "selftests/mm: hugetlb cgroup charging: robustness
fixes" from Li Wang fixes a few issues in the hugetlb cgroup charging
selftests.
- The 5 patch series "Fix va_high_addr_switch.sh test failure - again"
from Chunyu Hu addresses several issues in the va_high_addr_switch test.
- The 5 patch series "mm/damon/tests/core-kunit: extend existing test
scenarios" from Shu Anzai improves the KUnit test coverage for DAMON.
- The 2 patch series "mm/khugepaged: fix dirty page handling for
MADV_COLLAPSE" from Shivank Garg fixes a glitch in khugepaged which was
causing madvise(MADV_COLLAPSE) to transiently return -EAGAIN.
- The 29 patch series "arch, mm: consolidate hugetlb early reservation"
from Mike Rapoport reworks and consolidates a pile of straggly code
related to reservation of hugetlb memory from bootmem and creation of
CMA areas for hugetlb.
- The 9 patch series "mm: clean up anon_vma implementation" from Lorenzo
Stoakes cleans up the anon_vma implementation in various ways.
- The 3 patch series "tweaks for __alloc_pages_slowpath()" from
Vlastimil Babka does a little streamlining of the page allocator's
slowpath code.
- The 8 patch series "memcg: separate private and public ID namespaces"
from Shakeel Butt cleans up the memcg ID code and prevents the
internal-only private IDs from being exposed to userspace.
- The 6 patch series "mm: hugetlb: allocate frozen gigantic folio" from
Kefeng Wang cleans up the allocation of frozen folios and avoids some
atomic refcount operations.
- The 11 patch series "mm/damon: advance DAMOS-based LRU sorting" from
SeongJae Park improves DAMOS's movement of memory betewwn the active and
inactive LRUs and adds auto-tuning of the ratio-based quotas and of
monitoring intervals.
- The 18 patch series "Support page table check on PowerPC" from Andrew
Donnellan makes CONFIG_PAGE_TABLE_CHECK_ENFORCED work on powerpc.
- The 3 patch series "nodemask: align nodes_and{,not} with underlying
bitmap ops" from Yury Norov makes nodes_and() and nodes_andnot()
propagate the return values from the underlying bit operations, enabling
some cleanup in calling code.
- The 5 patch series "mm/damon: hide kdamond and kdamond_lock from API
callers" from SeongJae Park cleans up some DAMON internal interfaces.
- The 4 patch series "mm/khugepaged: cleanups and scan limit fix" from
Shivank Garg does some cleanup work in khupaged and fixes a scan limit
accounting issue.
- The 24 patch series "mm: balloon infrastructure cleanups" from David
Hildenbrand goes to town on the balloon infrastructure and its page
migration function. Mainly cleanups, also some locking simplification.
- The 2 patch series "mm/vmscan: add tracepoint and reason for
kswapd_failures reset" from Jiayuan Chen adds additional tracepoints to
the page reclaim code.
- The 3 patch series "Replace wq users and add WQ_PERCPU to
alloc_workqueue() users" from Marco Crivellari is part of Marco's
kernel-wide migration from the legacy workqueue APIs over to the
preferred unbound workqueues.
- The 9 patch series "Various mm kselftests improvements/fixes" from
Kevin Brodsky provides various unrelated improvements/fixes for the mm
kselftests.
- The 5 patch series "mm: accelerate gigantic folio allocation" from
Kefeng Wang greatly speeds up gigantic folio allocation, mainly by
avoiding unnecessary work in pfn_range_valid_contig().
- The 5 patch series "selftests/damon: improve leak detection and wss
estimation reliability" from SeongJae Park improves the reliability of
two of the DAMON selftests.
- The 8 patch series "mm/damon: cleanup kdamond, damon_call(), damos
filter and DAMON_MIN_REGION" from SeongJae Park does some cleanup work
in the core DAMON code.
- The 8 patch series "Docs/mm/damon: update intro, modules, maintainer
profile, and misc" from SeongJae Park performs maintenance work on the
DAMON documentation.
- The 10 patch series "mm: add and use vma_assert_stabilised() helper"
from Lorenzo Stoakes refactors and cleans up the core VMA code. The
main aim here is to be able to use the mmap write lock's lockdep state
to perform various assertions regarding the locking which the VMA code
requires.
- The 19 patch series "mm, swap: swap table phase II: unify swapin use"
from Kairui Song removes some old swap code (swap cache bypassing and
swap synchronization) which wasn't working very well. Various other
cleanups and simplifications were made. The end result is a 20% speedup
in one benchmark.
- The 8 patch series "enable PT_RECLAIM on more 64-bit architectures"
from Qi Zheng makes PT_RECLAIM available on 64-bit alpha, loongarch,
mips, parisc, um, Various cleanups were performed along the way.
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Merge tag 'mm-stable-2026-02-11-19-22' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull MM updates from Andrew Morton:
- "powerpc/64s: do not re-activate batched TLB flush" makes
arch_{enter|leave}_lazy_mmu_mode() nest properly (Alexander Gordeev)
It adds a generic enter/leave layer and switches architectures to use
it. Various hacks were removed in the process.
- "zram: introduce compressed data writeback" implements data
compression for zram writeback (Richard Chang and Sergey Senozhatsky)
- "mm: folio_zero_user: clear page ranges" adds clearing of contiguous
page ranges for hugepages. Large improvements during demand faulting
are demonstrated (David Hildenbrand)
- "memcg cleanups" tidies up some memcg code (Chen Ridong)
- "mm/damon: introduce {,max_}nr_snapshots and tracepoint for damos
stats" improves DAMOS stat's provided information, deterministic
control, and readability (SeongJae Park)
- "selftests/mm: hugetlb cgroup charging: robustness fixes" fixes a few
issues in the hugetlb cgroup charging selftests (Li Wang)
- "Fix va_high_addr_switch.sh test failure - again" addresses several
issues in the va_high_addr_switch test (Chunyu Hu)
- "mm/damon/tests/core-kunit: extend existing test scenarios" improves
the KUnit test coverage for DAMON (Shu Anzai)
- "mm/khugepaged: fix dirty page handling for MADV_COLLAPSE" fixes a
glitch in khugepaged which was causing madvise(MADV_COLLAPSE) to
transiently return -EAGAIN (Shivank Garg)
- "arch, mm: consolidate hugetlb early reservation" reworks and
consolidates a pile of straggly code related to reservation of
hugetlb memory from bootmem and creation of CMA areas for hugetlb
(Mike Rapoport)
- "mm: clean up anon_vma implementation" cleans up the anon_vma
implementation in various ways (Lorenzo Stoakes)
- "tweaks for __alloc_pages_slowpath()" does a little streamlining of
the page allocator's slowpath code (Vlastimil Babka)
- "memcg: separate private and public ID namespaces" cleans up the
memcg ID code and prevents the internal-only private IDs from being
exposed to userspace (Shakeel Butt)
- "mm: hugetlb: allocate frozen gigantic folio" cleans up the
allocation of frozen folios and avoids some atomic refcount
operations (Kefeng Wang)
- "mm/damon: advance DAMOS-based LRU sorting" improves DAMOS's movement
of memory betewwn the active and inactive LRUs and adds auto-tuning
of the ratio-based quotas and of monitoring intervals (SeongJae Park)
- "Support page table check on PowerPC" makes
CONFIG_PAGE_TABLE_CHECK_ENFORCED work on powerpc (Andrew Donnellan)
- "nodemask: align nodes_and{,not} with underlying bitmap ops" makes
nodes_and() and nodes_andnot() propagate the return values from the
underlying bit operations, enabling some cleanup in calling code
(Yury Norov)
- "mm/damon: hide kdamond and kdamond_lock from API callers" cleans up
some DAMON internal interfaces (SeongJae Park)
- "mm/khugepaged: cleanups and scan limit fix" does some cleanup work
in khupaged and fixes a scan limit accounting issue (Shivank Garg)
- "mm: balloon infrastructure cleanups" goes to town on the balloon
infrastructure and its page migration function. Mainly cleanups, also
some locking simplification (David Hildenbrand)
- "mm/vmscan: add tracepoint and reason for kswapd_failures reset" adds
additional tracepoints to the page reclaim code (Jiayuan Chen)
- "Replace wq users and add WQ_PERCPU to alloc_workqueue() users" is
part of Marco's kernel-wide migration from the legacy workqueue APIs
over to the preferred unbound workqueues (Marco Crivellari)
- "Various mm kselftests improvements/fixes" provides various unrelated
improvements/fixes for the mm kselftests (Kevin Brodsky)
- "mm: accelerate gigantic folio allocation" greatly speeds up gigantic
folio allocation, mainly by avoiding unnecessary work in
pfn_range_valid_contig() (Kefeng Wang)
- "selftests/damon: improve leak detection and wss estimation
reliability" improves the reliability of two of the DAMON selftests
(SeongJae Park)
- "mm/damon: cleanup kdamond, damon_call(), damos filter and
DAMON_MIN_REGION" does some cleanup work in the core DAMON code
(SeongJae Park)
- "Docs/mm/damon: update intro, modules, maintainer profile, and misc"
performs maintenance work on the DAMON documentation (SeongJae Park)
- "mm: add and use vma_assert_stabilised() helper" refactors and cleans
up the core VMA code. The main aim here is to be able to use the mmap
write lock's lockdep state to perform various assertions regarding
the locking which the VMA code requires (Lorenzo Stoakes)
- "mm, swap: swap table phase II: unify swapin use" removes some old
swap code (swap cache bypassing and swap synchronization) which
wasn't working very well. Various other cleanups and simplifications
were made. The end result is a 20% speedup in one benchmark (Kairui
Song)
- "enable PT_RECLAIM on more 64-bit architectures" makes PT_RECLAIM
available on 64-bit alpha, loongarch, mips, parisc, and um. Various
cleanups were performed along the way (Qi Zheng)
* tag 'mm-stable-2026-02-11-19-22' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (325 commits)
mm/memory: handle non-split locks correctly in zap_empty_pte_table()
mm: move pte table reclaim code to memory.c
mm: make PT_RECLAIM depends on MMU_GATHER_RCU_TABLE_FREE
mm: convert __HAVE_ARCH_TLB_REMOVE_TABLE to CONFIG_HAVE_ARCH_TLB_REMOVE_TABLE config
um: mm: enable MMU_GATHER_RCU_TABLE_FREE
parisc: mm: enable MMU_GATHER_RCU_TABLE_FREE
mips: mm: enable MMU_GATHER_RCU_TABLE_FREE
LoongArch: mm: enable MMU_GATHER_RCU_TABLE_FREE
alpha: mm: enable MMU_GATHER_RCU_TABLE_FREE
mm: change mm/pt_reclaim.c to use asm/tlb.h instead of asm-generic/tlb.h
mm/damon/stat: remove __read_mostly from memory_idle_ms_percentiles
zsmalloc: make common caches global
mm: add SPDX id lines to some mm source files
mm/zswap: use %pe to print error pointers
mm/vmscan: use %pe to print error pointers
mm/readahead: fix typo in comment
mm: khugepaged: fix NR_FILE_PAGES and NR_SHMEM in collapse_file()
mm: refactor vma_map_pages to use vm_insert_pages
mm/damon: unify address range representation with damon_addr_range
mm/cma: replace snprintf with strscpy in cma_new_area
...
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Merge tag 'fs_for_v6.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
Pull quota and isofs updates from Jan Kara:
- a fix for quotactl livelock during filesystem freezing
- a small improvement for isofs
- a documentation fix for ext2
* tag 'fs_for_v6.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
isofs: support full length file names (255 instead of 253)
quota: fix livelock between quotactl and freeze_super
doc : fix a broken link in ext2.rst
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Merge tag 'fsnotify_for_v6.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
Pull fsnotify updates from Jan Kara:
"A set of fixes to shutdown fsnotify subsystem before invalidating
dcache thus addressing some nasty possible races"
* tag 'fsnotify_for_v6.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
fsnotify: Shutdown fsnotify before destroying sb's dcache
fsnotify: Use connector list for destroying inode marks
fsnotify: Track inode connectors for a superblock
Vincent Mailhol