Add a new hwprobe key "RISCV_HWPROBE_KEY_VENDOR_EXT_THEAD_0" which
allows userspace to probe for the new RISCV_ISA_VENDOR_EXT_XTHEADVECTOR
vendor extension.
This new key will allow userspace code to probe for which thead vendor
extensions are supported. This API is modeled to be consistent with
RISCV_HWPROBE_KEY_IMA_EXT_0. The bitmask returned will have each bit
corresponding to a supported thead vendor extension of the cpumask set.
Just like RISCV_HWPROBE_KEY_IMA_EXT_0, this allows a userspace program
to determine all of the supported thead vendor extensions in one call.
Signed-off-by: Charlie Jenkins <charlie@rivosinc.com>
Reviewed-by: Evan Green <evan@rivosinc.com>
Tested-by: Yangyu Chen <cyy@cyyself.name>
Link: https://lore.kernel.org/r/20241113-xtheadvector-v11-10-236c22791ef9@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
xtheadvector uses different encodings than standard vector for
vsetvli and vector loads/stores. Write the instruction formats to be
used in assembly code.
Co-developed-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Charlie Jenkins <charlie@rivosinc.com>
Tested-by: Yangyu Chen <cyy@cyyself.name>
Link: https://lore.kernel.org/r/20241113-xtheadvector-v11-8-236c22791ef9@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
The VXRM vector csr for xtheadvector has an encoding of 0xa and VXSAT
has an encoding of 0x9.
Co-developed-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Charlie Jenkins <charlie@rivosinc.com>
Tested-by: Yangyu Chen <cyy@cyyself.name>
Link: https://lore.kernel.org/r/20241113-xtheadvector-v11-7-236c22791ef9@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
The VCSR CSR contains two elements VXRM[2:1] and VXSAT[0].
Define constants for those to access the elements in a readable way.
Acked-by: Guo Ren <guoren@kernel.org>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Heiko Stuebner <heiko.stuebner@vrull.eu>
Signed-off-by: Charlie Jenkins <charlie@rivosinc.com>
Tested-by: Yangyu Chen <cyy@cyyself.name>
Link: https://lore.kernel.org/r/20241113-xtheadvector-v11-6-236c22791ef9@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
If thead,vlenb is provided in the device tree, prefer that over reading
the vlenb csr.
Signed-off-by: Charlie Jenkins <charlie@rivosinc.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Tested-by: Yangyu Chen <cyy@cyyself.name>
Link: https://lore.kernel.org/r/20241113-xtheadvector-v11-5-236c22791ef9@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Add support to the kernel for THead vendor extensions with the target of
the new extension xtheadvector.
Signed-off-by: Charlie Jenkins <charlie@rivosinc.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Tested-by: Yangyu Chen <cyy@cyyself.name>
Link: https://lore.kernel.org/r/20241113-xtheadvector-v11-4-236c22791ef9@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
The D1/D1s SoCs support xtheadvector so it can be included in the
devicetree. Also include vlenb for the cpu.
Signed-off-by: Charlie Jenkins <charlie@rivosinc.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Tested-by: Yangyu Chen <cyy@cyyself.name>
Link: https://lore.kernel.org/r/20241113-xtheadvector-v11-3-236c22791ef9@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Add a property analogous to the vlenb CSR so that software can detect
the vector length of each CPU prior to it being brought online.
Currently software has to assume that the vector length read from the
boot CPU applies to all possible CPUs. On T-Head CPUs implementing
pre-ratification vector, reading the th.vlenb CSR may produce an illegal
instruction trap, so this property is required on such systems.
Signed-off-by: Charlie Jenkins <charlie@rivosinc.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Tested-by: Yangyu Chen <cyy@cyyself.name>
Link: https://lore.kernel.org/r/20241113-xtheadvector-v11-2-236c22791ef9@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
The xtheadvector ISA extension is described on the T-Head extension spec
Github page [1] at commit 95358cb2cca9.
Link: 95358cb2cc/xtheadvector.adoc [1]
Signed-off-by: Charlie Jenkins <charlie@rivosinc.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Tested-by: Yangyu Chen <cyy@cyyself.name>
Link: https://lore.kernel.org/r/20241113-xtheadvector-v11-1-236c22791ef9@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
This trips up with Xtheadvector enabled, but as far as I can tell it's
just been an issue since the original patchset.
Fixes: 7ca7a7b9b6 ("riscv: Add sysctl to set the default vector rule for new processes")
Reviewed-by: Charlie Jenkins <charlie@rivosinc.com>
Tested-by: Charlie Jenkins <charlie@rivosinc.com>
Link: https://lore.kernel.org/r/20250115180251.31444-1-palmer@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Commit d1703dc7bc ("RISC-V: Detect unaligned vector accesses
supported") removed the default handlers for handle_misaligned_load()
and handle_misaligned_store(). When the kernel is compiled without
RISCV_SCALAR_MISALIGNED, these handlers are never defined, causing
compilation errors.
Signed-off-by: Charlie Jenkins <charlie@rivosinc.com>
Fixes: d1703dc7bc ("RISC-V: Detect unaligned vector accesses supported")
Reviewed-by: Jesse Taube <mr.bossman075@gmail.com>
Link: https://lore.kernel.org/r/20241108-fix_handle_misaligned_load-v2-1-91d547ce64db@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Alexandre Ghiti <alexghiti@rivosinc.com> says:
This implements [cmp]xchgXX() macros using Zacas and Zabha extensions
and finally uses those newly introduced macros to add support for
qspinlocks: note that this implementation of qspinlocks satisfies the
forward progress guarantee.
It also uses Ziccrse to provide the qspinlock implementation.
Thanks to Guo and Leonardo for their work!
* b4-shazam-merge: (1314 commits)
riscv: Add qspinlock support
dt-bindings: riscv: Add Ziccrse ISA extension description
riscv: Add ISA extension parsing for Ziccrse
asm-generic: ticket-lock: Add separate ticket-lock.h
asm-generic: ticket-lock: Reuse arch_spinlock_t of qspinlock
riscv: Implement xchg8/16() using Zabha
riscv: Implement arch_cmpxchg128() using Zacas
riscv: Improve zacas fully-ordered cmpxchg()
riscv: Implement cmpxchg8/16() using Zabha
dt-bindings: riscv: Add Zabha ISA extension description
riscv: Implement cmpxchg32/64() using Zacas
riscv: Do not fail to build on byte/halfword operations with Zawrs
riscv: Move cpufeature.h macros into their own header
Link: https://lore.kernel.org/r/20241103145153.105097-1-alexghiti@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
In order to produce a generic kernel, a user can select
CONFIG_COMBO_SPINLOCKS which will fallback at runtime to the ticket
spinlock implementation if Zabha or Ziccrse are not present.
Note that we can't use alternatives here because the discovery of
extensions is done too late and we need to start with the qspinlock
implementation because the ticket spinlock implementation would pollute
the spinlock value, so let's use static keys.
This is largely based on Guo's work and Leonardo reviews at [1].
Link: https://lore.kernel.org/linux-riscv/20231225125847.2778638-1-guoren@kernel.org/ [1]
Signed-off-by: Guo Ren <guoren@kernel.org>
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Reviewed-by: Andrea Parri <parri.andrea@gmail.com>
Link: https://lore.kernel.org/r/20241103145153.105097-14-alexghiti@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Add description for the Ziccrse ISA extension which was ratified in
the riscv profiles specification v1.0.
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Reviewed-by: Guo Ren <guoren@kernel.org>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Reviewed-by: Andrea Parri <parri.andrea@gmail.com>
Link: https://lore.kernel.org/r/20241103145153.105097-13-alexghiti@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Add support to parse the Ziccrse string in the riscv,isa string.
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Reviewed-by: Andrea Parri <parri.andrea@gmail.com>
Link: https://lore.kernel.org/r/20241103145153.105097-12-alexghiti@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
The arch_spinlock_t of qspinlock has contained the atomic_t val, which
satisfies the ticket-lock requirement. Thus, unify the arch_spinlock_t
into qspinlock_types.h. This is the preparation for the next combo
spinlock.
Reviewed-by: Leonardo Bras <leobras@redhat.com>
Suggested-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/linux-riscv/CAK8P3a2rnz9mQqhN6-e0CGUUv9rntRELFdxt_weiD7FxH7fkfQ@mail.gmail.com/
Signed-off-by: Guo Ren <guoren@kernel.org>
Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Reviewed-by: Andrea Parri <parri.andrea@gmail.com>
Link: https://lore.kernel.org/r/20241103145153.105097-10-alexghiti@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
This adds runtime support for Zabha in xchg8/16() operations.
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Reviewed-by: Andrea Parri <parri.andrea@gmail.com>
Link: https://lore.kernel.org/r/20241103145153.105097-9-alexghiti@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Now that Zacas is supported in the kernel, let's use the double word
atomic version of amocas to improve the SLUB allocator.
Note that we have to select fixed registers, otherwise gcc fails to pick
even registers and then produces a reserved encoding which fails to
assemble.
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Reviewed-by: Andrea Parri <parri.andrea@gmail.com>
Link: https://lore.kernel.org/r/20241103145153.105097-8-alexghiti@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
The current fully-ordered cmpxchgXX() implementation results in:
amocas.X.rl a5,a4,(s1)
fence rw,rw
This provides enough sync but we can actually use the following better
mapping instead:
amocas.X.aqrl a5,a4,(s1)
Suggested-by: Andrea Parri <andrea@rivosinc.com>
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Reviewed-by: Andrea Parri <parri.andrea@gmail.com>
Link: https://lore.kernel.org/r/20241103145153.105097-7-alexghiti@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
This adds runtime support for Zabha in cmpxchg8/16() operations.
Note that in the absence of Zacas support in the toolchain, CAS
instructions from Zabha won't be used.
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Reviewed-by: Andrea Parri <parri.andrea@gmail.com>
Link: https://lore.kernel.org/r/20241103145153.105097-6-alexghiti@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Add description for the Zabha ISA extension which was ratified in April
2024.
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Reviewed-by: Guo Ren <guoren@kernel.org>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Reviewed-by: Andrea Parri <parri.andrea@gmail.com>
Link: https://lore.kernel.org/r/20241103145153.105097-5-alexghiti@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
This adds runtime support for Zacas in cmpxchg operations.
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Reviewed-by: Andrea Parri <parri.andrea@gmail.com>
Link: https://lore.kernel.org/r/20241103145153.105097-4-alexghiti@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
riscv does not have lr instructions on byte and halfword but the
qspinlock implementation actually uses such atomics provided by the
Zabha extension, so those sizes are legitimate.
Then instead of failing to build, just fallback to the !Zawrs path.
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Reviewed-by: Andrea Parri <parri.andrea@gmail.com>
Link: https://lore.kernel.org/r/20241103145153.105097-3-alexghiti@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
asm/cmpxchg.h will soon need riscv_has_extension_unlikely() macros and
then needs to include asm/cpufeature.h which introduces a lot of header
circular dependencies.
So move the riscv_has_extension_XXX() macros into their own header which
prevents such circular dependencies by including a restricted number of
headers.
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Reviewed-by: Andrea Parri <parri.andrea@gmail.com>
Link: https://lore.kernel.org/r/20241103145153.105097-2-alexghiti@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
allocated to a CoCo (SNP) guest which cannot use them and thus fail booting
- Fix the microcode loader on AMD to pay attention to the stepping of a patch
and to handle the case where a BIOS config option splits the machine into
logical NUMA nodes per L3 cache slice
- Disable LAM from being built by default due to security concerns of
a various kind
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Merge tag 'x86_urgent_for_v6.12_rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Borislav Petkov:
- Prevent a certain range of pages which get marked as hypervisor-only,
to get allocated to a CoCo (SNP) guest which cannot use them and thus
fail booting
- Fix the microcode loader on AMD to pay attention to the stepping of a
patch and to handle the case where a BIOS config option splits the
machine into logical NUMA nodes per L3 cache slice
- Disable LAM from being built by default due to security concerns
* tag 'x86_urgent_for_v6.12_rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/sev: Ensure that RMP table fixups are reserved
x86/microcode/AMD: Split load_microcode_amd()
x86/microcode/AMD: Pay attention to the stepping dynamically
x86/lam: Disable ADDRESS_MASKING in most cases
- Fix missing mutex unlock in error path of register_ftrace_graph()
A previous fix added a return on an error path and forgot to unlock the
mutex. Instead of dealing with error paths, use guard(mutex) as the mutex
is just released at the exit of the function anyway. Other functions
in this file should be updated with this, but that's a cleanup and not
a fix.
- Change cpuhp setup name to be consistent with other cpuhp states
The same fix that the above patch fixes added a cpuhp_setup_state() call
with the name of "fgraph_idle_init". I was informed that it should instead
be something like: "fgraph:online". Update that too.
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Merge tag 'ftrace-v6.12-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull ftrace fixes from Steven Rostedt:
- Fix missing mutex unlock in error path of register_ftrace_graph()
A previous fix added a return on an error path and forgot to unlock
the mutex. Instead of dealing with error paths, use guard(mutex) as
the mutex is just released at the exit of the function anyway. Other
functions in this file should be updated with this, but that's a
cleanup and not a fix.
- Change cpuhp setup name to be consistent with other cpuhp states
The same fix that the above patch fixes added a cpuhp_setup_state()
call with the name of "fgraph_idle_init". I was informed that it
should instead be something like: "fgraph:online". Update that too.
* tag 'ftrace-v6.12-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
fgraph: Change the name of cpuhp state to "fgraph:online"
fgraph: Fix missing unlock in register_ftrace_graph()
Highlights:
- Asus thermal profile fix, fixing performance issues on Lunar Lake
- Intel PMC: 1 revert for a lockdep issue + 1 bugfix
- Dell WMI: Ignore some WMI events on suspend/resume to silence warnings
The following is an automated git shortlog grouped by driver:
asus-wmi:
- Fix thermal profile initialization
dell-wmi:
- Ignore suspend notifications
intel/pmc:
- Revert "Enable the ACPI PM Timer to be turned off when suspended"
platform/x86/intel/pmc:
- Fix pmc_core_iounmap to call iounmap for valid addresses
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Merge tag 'platform-drivers-x86-v6.12-3' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86
Pull x86 platform driver fixes from Hans de Goede:
- Asus thermal profile fix, fixing performance issues on Lunar Lake
- Intel PMC: one revert for a lockdep issue and one bugfix
- Dell WMI: Ignore some WMI events on suspend/resume to silence warnings
* tag 'platform-drivers-x86-v6.12-3' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86:
platform/x86: asus-wmi: Fix thermal profile initialization
platform/x86: dell-wmi: Ignore suspend notifications
platform/x86/intel/pmc: Fix pmc_core_iounmap to call iounmap for valid addresses
platform/x86:intel/pmc: Revert "Enable the ACPI PM Timer to be turned off when suspended"
This update includes a single commit to resolve a regression existing in
v6.11 or later.
The change in 1394 OHCI driver in v6.11 kernel could cause general
protection faults when rediscovering nodes in IEEE 1394 bus while holding
a spin lock. Consequently, watchdog checks can report a hard lockup.
Currently, this issue is observed primarily during the system resume phase
when using an extra node with three ports or more is used. However, it
could potentially occur in the other cases as well.
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Merge tag 'firewire-fixes-6.12-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394
Pull firewire fix from Takashi Sakamoto:
"A single commit to resolve a regression existing in v6.11 or later.
The change in 1394 OHCI driver in v6.11 kernel could cause general
protection faults when rediscovering nodes in IEEE 1394 bus while
holding a spin lock. Consequently, watchdog checks can report a hard
lockup.
Currently, this issue is observed primarily during the system resume
phase when using an extra node with three ports or more is used.
However, it could potentially occur in the other cases as well"
* tag 'firewire-fixes-6.12-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394:
firewire: core: fix invalid port index for parent device
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Merge tag 'block-6.12-20241026' of git://git.kernel.dk/linux
Pull block fixes from Jens Axboe:
- Pull request for MD via Song fixing a few issues
- Fix a wrong check in blk_rq_map_user_bvec(), causing IO errors on
passthrough IO (Xinyu)
* tag 'block-6.12-20241026' of git://git.kernel.dk/linux:
block: fix sanity checks in blk_rq_map_user_bvec
md/raid10: fix null ptr dereference in raid10_size()
md: ensure child flush IO does not affect origin bio->bi_status
* fix recovery of allocator ops after a growfs
* Do not fail repairs on metadata files with no attr fork
Signed-off-by: Carlos Maiolino <cem@kernel.org>
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Merge tag 'xfs-6.12-fixes-5' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Pull xfs fixes from Carlos Maiolino:
- Fix recovery of allocator ops after a growfs
- Do not fail repairs on metadata files with no attr fork
* tag 'xfs-6.12-fixes-5' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
xfs: update the pag for the last AG at recovery time
xfs: don't use __GFP_RETRY_MAYFAIL in xfs_initialize_perag
xfs: error out when a superblock buffer update reduces the agcount
xfs: update the file system geometry after recoverying superblock buffers
xfs: merge the perag freeing helpers
xfs: pass the exact range to initialize to xfs_initialize_perag
xfs: don't fail repairs on metadata files with no attr fork
In a commit 24b7f8e5cd ("firewire: core: use helper functions for self
ID sequence"), the enumeration over self ID sequence was refactored with
some helper functions with KUnit tests. These helper functions are
guaranteed to work expectedly by the KUnit tests, however their application
includes a mistake to assign invalid value to the index of port connected
to parent device.
This bug affects the case that any extra node devices which has three or
more ports are connected to 1394 OHCI controller. In the case, the path
to update the tree cache could hits WARN_ON(), and gets general protection
fault due to the access to invalid address computed by the invalid value.
This commit fixes the bug to assign correct port index.
Cc: stable@vger.kernel.org
Reported-by: Edmund Raile <edmund.raile@proton.me>
Closes: https://lore.kernel.org/lkml/8a9902a4ece9329af1e1e42f5fea76861f0bf0e8.camel@proton.me/
Fixes: 24b7f8e5cd ("firewire: core: use helper functions for self ID sequence")
Link: https://lore.kernel.org/r/20241025034137.99317-1-o-takashi@sakamocchi.jp
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
When support for vivobook fan profiles was added, the initial
call to throttle_thermal_policy_set_default() was removed, which
however is necessary for full initialization.
Fix this by calling throttle_thermal_policy_set_default() again
when setting up the platform profile.
Fixes: bcbfcebda2 ("platform/x86: asus-wmi: add support for vivobook fan profiles")
Reported-by: Michael Larabel <Michael@phoronix.com>
Closes: https://www.phoronix.com/review/lunar-lake-xe2/5
Signed-off-by: Armin Wolf <W_Armin@gmx.de>
Link: https://lore.kernel.org/r/20241025191514.15032-2-W_Armin@gmx.de
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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Merge tag '9p-for-6.12-rc5' of https://github.com/martinetd/linux
Pull more 9p reverts from Dominique Martinet:
"Revert patches causing inode collision problems.
The code simplification introduced significant regressions on servers
that do not remap inode numbers when exporting multiple underlying
filesystems with colliding inodes. See the top-most revert (commit
be2ca38253) for details.
This problem had been ignored for too long and the reverts will also
head to stable (6.9+).
I'm confident this set of patches gets us back to previous behaviour
(another related patch had already been reverted back in April and
we're almost back to square 1, and the rest didn't touch inode
lifecycle)"
* tag '9p-for-6.12-rc5' of https://github.com/martinetd/linux:
Revert "fs/9p: simplify iget to remove unnecessary paths"
Revert "fs/9p: fix uaf in in v9fs_stat2inode_dotl"
Revert "fs/9p: remove redundant pointer v9ses"
Revert " fs/9p: mitigate inode collisions"
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Merge tag 'fuse-fixes-6.12-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse
Pull fuse fixes from Miklos Szeredi:
- Fix cached size after passthrough writes
This fix needed a trivial change in the backing-file API, which
resulted in some non-fuse files being touched.
- Revert a commit meant as a cleanup but which triggered a WARNING
- Remove a stray debug line left-over
* tag 'fuse-fixes-6.12-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse:
fuse: remove stray debug line
Revert "fuse: move initialization of fuse_file to fuse_writepages() instead of in callback"
fuse: update inode size after extending passthrough write
fs: pass offset and result to backing_file end_write() callback
- Fix a couple of use-after-free bugs
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Merge tag 'nfsd-6.12-2' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux
Pull nfsd fixes from Chuck Lever:
- Fix a couple of use-after-free bugs
* tag 'nfsd-6.12-2' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux:
nfsd: cancel nfsd_shrinker_work using sync mode in nfs4_state_shutdown_net
nfsd: fix race between laundromat and free_stateid
- Make acpi_parse_prmt() look for EFI_MEMORY_RUNTIME memory regions
only to comply with the UEFI specification and make PRM use
efi_guid_t instead of guid_t to avoid a compiler warning triggered
by that change (Koba Ko, Dan Carpenter).
- Add an ACPI IRQ override quirk for LG 16T90SP (Christian Heusel).
- Add a lid switch detection quirk for Samsung Galaxy Book2 (Shubham
Panwar).
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Merge tag 'acpi-6.12-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI fixes from Rafael Wysocki:
"These fix an ACPI PRM (Platform Runtime Mechanism) issue and add two
new DMI quirks, one for an ACPI IRQ override and one for lid switch
detection:
- Make acpi_parse_prmt() look for EFI_MEMORY_RUNTIME memory regions
only to comply with the UEFI specification and make PRM use
efi_guid_t instead of guid_t to avoid a compiler warning triggered
by that change (Koba Ko, Dan Carpenter)
- Add an ACPI IRQ override quirk for LG 16T90SP (Christian Heusel)
- Add a lid switch detection quirk for Samsung Galaxy Book2 (Shubham
Panwar)"
* tag 'acpi-6.12-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI: PRM: Clean up guid type in struct prm_handler_info
ACPI: button: Add DMI quirk for Samsung Galaxy Book2 to fix initial lid detection issue
ACPI: resource: Add LG 16T90SP to irq1_level_low_skip_override[]
ACPI: PRM: Find EFI_MEMORY_RUNTIME block for PRM handler and context
Update cpufreq documentation to match the code after recent
changes (Christian Loehle), fix a units conversion issue in the
CPPC cpufreq driver (liwei), and fix an error check in the
dtpm_devfreq power capping driver (Yuan Can).
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Merge tag 'pm-6.12-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management fixes from Rafael Wysocki:
"Update cpufreq documentation to match the code after recent changes
(Christian Loehle), fix a units conversion issue in the CPPC cpufreq
driver (liwei), and fix an error check in the dtpm_devfreq power
capping driver (Yuan Can)"
* tag 'pm-6.12-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
cpufreq: CPPC: fix perf_to_khz/khz_to_perf conversion exception
powercap: dtpm_devfreq: Fix error check against dev_pm_qos_add_request()
cpufreq: docs: Reflect latency changes in docs
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Merge tag 'pci-v6.12-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci
Pull pci fixes from Bjorn Helgaas:
- Hold the rescan lock while adding devices to avoid race with
concurrent pwrctl rescan that can lead to a crash (Bartosz
Golaszewski)
- Avoid binding pwrctl driver to QCom WCN wifi if the DT lacks the
necessary PMU regulator descriptions (Bartosz Golaszewski)
* tag 'pci-v6.12-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci:
PCI/pwrctl: Abandon QCom WCN probe on pre-pwrseq device-trees
PCI: Hold rescan lock while adding devices during host probe
- update MAINTAINERS with a keyword pattern for legacy GPIO API
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Merge tag 'gpio-fixes-for-v6.12-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux
Pull gpio fix from Bartosz Golaszewski:
"Update MAINTAINERS with a keyword pattern for legacy GPIO API
The goal is to alert us to anyone trying to use the deprecated, legacy
API (this happens almost every release)"
* tag 'gpio-fixes-for-v6.12-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
MAINTAINERS: add a keyword entry for the GPIO subsystem
- Fix the handling of ATA commands that timeout (command that did not
receive a completion interrupt within the configured timeout time).
Commands that timeout, while also having either the FAILFAST flag
set, or the command being a passthrough command, should never be
retried. Restore this behavior (as it was before v6.12-rc1).
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Merge tag 'ata-6.12-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/libata/linux
Pull ata fix from Niklas Cassel:
- Fix the handling of ATA commands that timeout (command that did not
receive a completion interrupt within the configured timeout time).
Commands that timeout, while also having either the FAILFAST flag
set, or the command being a passthrough command, should never be
retried. Restore this behavior (as it was before v6.12-rc1).
* tag 'ata-6.12-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/libata/linux:
ata: libata: Set DID_TIME_OUT for commands that actually timed out
The majority of changes here are about ASoC.
There are two core changes in ASoC (the bump of minimal topology
ABI version and the fix for references of components in DAPM code),
and others are mostly various device-specific fixes for SoundWire,
AMD, Intel, SOF, Qualcomm and FSL, in addition to a few usual
HD-audio quirks and fixes.
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Merge tag 'sound-6.12-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"The majority of changes here are about ASoC.
There are two core changes in ASoC (the bump of minimal topology ABI
version and the fix for references of components in DAPM code), and
others are mostly various device-specific fixes for SoundWire, AMD,
Intel, SOF, Qualcomm and FSL, in addition to a few usual HD-audio
quirks and fixes"
* tag 'sound-6.12-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (33 commits)
ALSA: hda/realtek: Update default depop procedure
ASoC: qcom: sc7280: Fix missing Soundwire runtime stream alloc
ASoC: fsl_micfil: Add sample rate constraint
ASoC: rt722-sdca: increase clk_stop_timeout to fix clock stop issue
ALSA: hda/tas2781: select CRC32 instead of CRC32_SARWATE
ALSA: hda/realtek: Add subwoofer quirk for Acer Predator G9-593
ALSA: firewire-lib: Avoid division by zero in apply_constraint_to_size()
ASoC: fsl_micfil: Add a flag to distinguish with different volume control types
ASoC: codecs: lpass-rx-macro: fix RXn(rx,n) macro for DSM_CTL and SEC7 regs
ASoC: Change my e-mail to gmail
ASoC: Intel: soc-acpi: lnl: Add match entry for TM2 laptops
ASoC: amd: yc: Fix non-functional mic on ASUS E1404FA
ASoC: SOF: Intel: hda: Always clean up link DMA during stop
soundwire: intel_ace2x: Send PDI stream number during prepare
ASoC: SOF: Intel: hda: Handle prepare without close for non-HDA DAI's
ASoC: SOF: ipc4-topology: Do not set ALH node_id for aggregated DAIs
MAINTAINERS: Update maintainer list for MICROCHIP ASOC, SSC and MCP16502 drivers
ASoC: qcom: Select missing common Soundwire module code on SDM845
ASoC: fsl_esai: change dev_warn to dev_dbg in irq handler
ASoC: rsnd: Fix probe failure on HiHope boards due to endpoint parsing
...
amdgpu:
- ACPI method handling fixes
- SMU 14.x fixes
- Display idle optimization fix
- DP link layer compliance fix
- SDMA 7.x fix
- PSR-SU fix
- SWSMU fix
i915:
- Fix DRM_I915_GVT_KVMGT dependencies in Kconfig
xe:
- Increase invalidation timeout to avoid errors in some hosts
- Flush worker on timeout
- Better handling for force wake failure
- Improve argument check on user fence creation
- Don't restart parallel queues multiple times on GT reset
bridge:
- aux: Fix assignment of OF node
- tc358767: Add missing of_node_put() in error path
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Merge tag 'drm-fixes-2024-10-25' of https://gitlab.freedesktop.org/drm/kernel
Pull drm fixes from Dave Airlie:
"Weekly drm fixes, mostly amdgpu and xe, with minor bridge and an i915
Kconfig fix. Nothing too scary and it seems to be pretty quiet.
amdgpu:
- ACPI method handling fixes
- SMU 14.x fixes
- Display idle optimization fix
- DP link layer compliance fix
- SDMA 7.x fix
- PSR-SU fix
- SWSMU fix
i915:
- Fix DRM_I915_GVT_KVMGT dependencies in Kconfig
xe:
- Increase invalidation timeout to avoid errors in some hosts
- Flush worker on timeout
- Better handling for force wake failure
- Improve argument check on user fence creation
- Don't restart parallel queues multiple times on GT reset
bridge:
- aux: Fix assignment of OF node
- tc358767: Add missing of_node_put() in error path"
* tag 'drm-fixes-2024-10-25' of https://gitlab.freedesktop.org/drm/kernel:
drm/xe: Don't restart parallel queues multiple times on GT reset
drm/xe/ufence: Prefetch ufence addr to catch bogus address
drm/xe: Handle unreliable MMIO reads during forcewake
drm/xe/guc/ct: Flush g2h worker in case of g2h response timeout
drm/xe: Enlarge the invalidation timeout from 150 to 500
drm/amdgpu: handle default profile on on devices without fullscreen 3D
drm/amd/display: Disable PSR-SU on Parade 08-01 TCON too
drm/amdgpu: fix random data corruption for sdma 7
drm/amd/display: temp w/a for DP Link Layer compliance
drm/amd/display: temp w/a for dGPU to enter idle optimizations
drm/amd/pm: update deep sleep status on smu v14.0.2/3
drm/amd/pm: update overdrive function on smu v14.0.2/3
drm/amd/pm: update the driver-fw interface file for smu v14.0.2/3
drm/amd: Guard against bad data for ATIF ACPI method
drm/bridge: tc358767: fix missing of_node_put() in for_each_endpoint_of_node()
drm/bridge: Fix assignment of the of_node of the parent to aux bridge
i915: fix DRM_I915_GVT_KVMGT dependencies
The x86 user pointer validation changes made me look at compiler output
a lot, and the wrong indentation for the ".popsection" in the generated
assembler triggered me.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
It turns out that AMD has a "Meltdown Lite(tm)" issue with non-canonical
accesses in kernel space. And so using just the high bit to decide
whether an access is in user space or kernel space ends up with the good
old "leak speculative data" if you have the right gadget using the
result:
CVE-2020-12965 “Transient Execution of Non-Canonical Accesses“
Now, the kernel surrounds the access with a STAC/CLAC pair, and those
instructions end up serializing execution on older Zen architectures,
which closes the speculation window.
But that was true only up until Zen 5, which renames the AC bit [1].
That improves performance of STAC/CLAC a lot, but also means that the
speculation window is now open.
Note that this affects not just the new address masking, but also the
regular valid_user_address() check used by access_ok(), and the asm
version of the sign bit check in the get_user() helpers.
It does not affect put_user() or clear_user() variants, since there's no
speculative result to be used in a gadget for those operations.
Reported-by: Andrew Cooper <andrew.cooper3@citrix.com>
Link: https://lore.kernel.org/all/80d94591-1297-4afb-b510-c665efd37f10@citrix.com/
Link: https://lore.kernel.org/all/20241023094448.GAZxjFkEOOF_DM83TQ@fat_crate.local/ [1]
Link: https://www.amd.com/en/resources/product-security/bulletin/amd-sb-1010.html
Link: https://arxiv.org/pdf/2108.10771
Cc: Josh Poimboeuf <jpoimboe@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Tested-by: Maciej Wieczor-Retman <maciej.wieczor-retman@intel.com> # LAM case
Fixes: 2865baf540 ("x86: support user address masking instead of non-speculative conditional")
Fixes: 6014bc2756 ("x86-64: make access_ok() independent of LAM")
Fixes: b19b74bc99 ("x86/mm: Rework address range check in get_user() and put_user()")
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Merge a dtpm_devfreq power capping driver fix for 6.12-rc5:
- Fix a dev_pm_qos_add_request() return value check in
__dtpm_devfreq_setup() to prevent it from failing if
a positive number is returned (Yuan Can).
* pm-powercap:
powercap: dtpm_devfreq: Fix error check against dev_pm_qos_add_request()
