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Merge tag 'audit-pr-20260203' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit
Pull audit updates from Paul Moore:
- Improve the NETFILTER_PKT audit records
Add source and destination ports to the NETFILTER_PKT audit records
while also consolidating a lot of the code into a new, singular
audit_log_nf_skb() function. This new approach to structuring the
NETFILTER_PKT record generation should eliminate some unnecessary
overhead when audit is not built into the kernel.
- Update the audit syscall classifier code
Add the listxattrat(), getxattrat(), and fchmodat2() syscall to the
audit code which classifies syscalls into categories of operations,
e.g. "read" or "change attributes".
- Move the syscall classifier declarations into audit_arch.h
Shuffle around some header file declarations to resolve some sparse
warnings.
* tag 'audit-pr-20260203' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit:
audit: move the compat_xxx_class[] extern declarations to audit_arch.h
audit: add missing syscalls to read class
audit: include source and destination ports to NETFILTER_PKT
audit: add audit_log_nf_skb helper function
audit: add fchmodat2() to change attributes class
Here are TPM driver updates for Linux v7.0.
BR, Jarkko
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Merge tag 'tpmdd-next-7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd
Pull tpm updates from Jarkko Sakkinen.
* tag 'tpmdd-next-7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd:
tpm: st33zp24: Fix missing cleanup on get_burstcount() error
tpm: tpm_i2c_infineon: Fix locality leak on get_burstcount() failure
- 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 that
were advertised as supported to userspace when running with
KVM_CAP_ENFORCE_PV_FEATURE_CPUID enabled.
- Fix a bug where KVM would attempt to read protect guest state (CR3) when
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. Explicitly allow
the few exports that are intended for external usage.
- Ignore -EBUSY when checking nested events after a vCPU exits blocking as
the WARN is user-triggerable, and because exiting to userspace on -EBUSY
does more harm than good in pretty much every situation.
- Throw in the towel and drop the WARN on INIT/SIPI being blocked when vCPU is
in Wait-For-SIPI, as playing whack-a-mole with syzkaller turned out to be an
unwinnable game.
- 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).
- Minor cleanups.
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Merge tag 'kvm-x86-misc-6.20' of https://github.com/kvm-x86/linux into HEAD
KVM x86 misc changes for 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 that
were advertised as supported to userspace when running with
KVM_CAP_ENFORCE_PV_FEATURE_CPUID enabled.
- Fix a bug where KVM would attempt to read protect guest state (CR3) when
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. Explicitly allow
the few exports that are intended for external usage.
- Ignore -EBUSY when checking nested events after a vCPU exits blocking as
the WARN is user-triggerable, and because exiting to userspace on -EBUSY
does more harm than good in pretty much every situation.
- Throw in the towel and drop the WARN on INIT/SIPI being blocked when vCPU is
in Wait-For-SIPI, as playing whack-a-mole with syzkaller turned out to be an
unwinnable game.
- 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).
- Minor cleanups.
- 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.
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Merge tag 'kvm-x86-svm-6.20' of https://github.com/kvm-x86/linux into HEAD
KVM SVM changes for 6.20
- 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.
- Fix an SGX bug where KVM would incorrectly try to handle EPCM #PFs by always
relecting EPCM #PFs back into the guest. KVM doesn't shadow EPCM entries,
and so 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.
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Merge tag 'kvm-x86-vmx-6.20' of https://github.com/kvm-x86/linux into HEAD
KVM VMX changes for 6.20
- Fix an SGX bug where KVM would incorrectly try to handle EPCM #PFs by always
relecting EPCM #PFs back into the guest. KVM doesn't shadow EPCM entries,
and so 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.
RCU Tasks Trace:
Re-implement RCU tasks trace in term of SRCU-fast, not only more than 500 lines
of code are saved because of the reimplementation, a new set of API,
rcu_read_{,un}lock_tasks_trace(), becomes possible as well. Compared to the
previous rcu_read_{,un}lock_trace(), the new API avoid the task_struct accesses
thanks to the SRCU-fast semantics. As a result, the old
rcu_read{,un}lock_trace() API is now deprecated.
RCU Torture Test:
- Multiple improvements on kvm-series.sh (parallel run and progress showing
metrics)
- Add context checks to rcu_torture_timer().
- Make config2csv.sh properly handle comments in .boot files.
- Include commit discription in testid.txt.
Miscellaneous RCU changes:
- Reduce synchronize_rcu() latency by reporting GP kthread's CPU QS early.
- Use suitable gfp_flags for the init_srcu_struct_nodes().
- Fix rcu_read_unlock() deadloop due to softirq.
- Correctly compute probability to invoke ->exp_current() in rcutorture.
- Make expedited RCU CPU stall warnings detect stall-end races.
RCU nocb:
- Remove unnecessary WakeOvfIsDeferred wake path and callback overload
handling.
- Extract nocb_defer_wakeup_cancel() helper.
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Merge tag 'rcu.release.v7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux
Pull RCU updates from Boqun Feng:
- RCU Tasks Trace:
Re-implement RCU tasks trace in term of SRCU-fast, not only more than
500 lines of code are saved because of the reimplementation, a new
set of API, rcu_read_{,un}lock_tasks_trace(), becomes possible as
well. Compared to the previous rcu_read_{,un}lock_trace(), the new
API avoid the task_struct accesses thanks to the SRCU-fast semantics.
As a result, the old rcu_read{,un}lock_trace() API is now deprecated.
- RCU Torture Test:
- Multiple improvements on kvm-series.sh (parallel run and
progress showing metrics)
- Add context checks to rcu_torture_timer()
- Make config2csv.sh properly handle comments in .boot files
- Include commit discription in testid.txt
- Miscellaneous RCU changes:
- Reduce synchronize_rcu() latency by reporting GP kthread's
CPU QS early
- Use suitable gfp_flags for the init_srcu_struct_nodes()
- Fix rcu_read_unlock() deadloop due to softirq
- Correctly compute probability to invoke ->exp_current()
in rcutorture
- Make expedited RCU CPU stall warnings detect stall-end races
- RCU nocb:
- Remove unnecessary WakeOvfIsDeferred wake path and callback
overload handling
- Extract nocb_defer_wakeup_cancel() helper
* tag 'rcu.release.v7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux: (25 commits)
rcu/nocb: Extract nocb_defer_wakeup_cancel() helper
rcu/nocb: Remove dead callback overload handling
rcu/nocb: Remove unnecessary WakeOvfIsDeferred wake path
rcu: Reduce synchronize_rcu() latency by reporting GP kthread's CPU QS early
srcu: Use suitable gfp_flags for the init_srcu_struct_nodes()
rcu: Fix rcu_read_unlock() deadloop due to softirq
rcutorture: Correctly compute probability to invoke ->exp_current()
rcu: Make expedited RCU CPU stall warnings detect stall-end races
rcutorture: Add --kill-previous option to terminate previous kvm.sh runs
rcutorture: Prevent concurrent kvm.sh runs on same source tree
torture: Include commit discription in testid.txt
torture: Make config2csv.sh properly handle comments in .boot files
torture: Make kvm-series.sh give run numbers and totals
torture: Make kvm-series.sh give build numbers and totals
torture: Parallelize kvm-series.sh guest-OS execution
rcutorture: Add context checks to rcu_torture_timer()
rcutorture: Test rcu_tasks_trace_expedite_current()
srcu: Create an rcu_tasks_trace_expedite_current() function
checkpatch: Deprecate rcu_read_{,un}lock_trace()
rcu: Update Requirements.rst for RCU Tasks Trace
...
resctrl test:
- fixes a devision by zero error on Hygon
- fixes non-contiguous CBM check for Hygon
- defines CPU vendor IDs as bits to match usage
- adds CPU vendor detection for Hygon
- coredeump test: changes to use __builtin_trap() instead of a null pointer
- anon_inode: replaces null pointers with empty arrays
- kublk: includes message in _Static_assert for C11 compatibility
- run_kselftest.sh: adds `--skip` argument option
- pidfd: fixes typo in comment
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Merge tag 'linux_kselftest-next-6.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
Pull kselftest updates from Shuah Khan:
"resctrl test:
- fix division by zero error on Hygon
- fix non-contiguous CBM check for Hygon
- define CPU vendor IDs as bits to match usage
- add CPU vendor detection for Hygon
misc:
- coredeump test: use __builtin_trap() instead of a null pointer
- anon_inode: replace null pointers with empty arrays
- kublk: include message in _Static_assert for C11 compatibility
- run_kselftest.sh: add `--skip` argument option
- pidfd: fix typo in comment"
* tag 'linux_kselftest-next-6.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
selftests/pidfd: fix typo in comment
selftests/run_kselftest.sh: Add `--skip` argument option
selftests/resctrl: Fix non-contiguous CBM check for Hygon
selftests/resctrl: Add CPU vendor detection for Hygon
selftests/resctrl: Define CPU vendor IDs as bits to match usage
selftests/resctrl: Fix a division by zero error on Hygon
kselftest/kublk: include message in _Static_assert for C11 compatibility
kselftest/anon_inode: replace null pointers with empty arrays
kselftest/coredump: use __builtin_trap() instead of null pointer
- 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.
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Merge tag 'kvm-x86-selftests-6.20' of https://github.com/kvm-x86/linux into HEAD
KVM selftests changes for 6.20
- 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.
kunit:
- adds __rust_helper to helpers
- fixes up const mis-match in many assert functions
- fixes up const mismatch in test_list_sort
- protects KUNIT_BINARY_STR_ASSERTION against ERR_PTR values
- respects KBUILD_OUTPUT env variable by default
- adds bash completion
kunit tool:
- adds test for nested test result reporting
- fixes to not overwrite test status based on subtest counts
- adds 32-bit big endian ARM configuration to qemu_configs
- renames test_data_path() to _test_data_path()
- fixes relying on implicit working directory change
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Merge tag 'linux_kselftest-kunit-6.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
Pull kunit updates from Shuah Khan:
"kunit:
- add __rust_helper to helpers
- fix up const mismatch in many assert functions
- fix up const mismatch in test_list_sort
- protect KUNIT_BINARY_STR_ASSERTION against ERR_PTR values
- respect KBUILD_OUTPUT env variable by default
- add bash completion
kunit tool:
- add test for nested test result reporting
- do not overwrite test status based on subtest counts
- add 32-bit big endian ARM configuration to qemu_configs
- rename test_data_path() to _test_data_path()
- do not rely on implicit working directory change"
* tag 'linux_kselftest-kunit-6.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
kunit: add bash completion
kunit: tool: test: Don't rely on implicit working directory change
kunit: tool: test: Rename test_data_path() to _test_data_path()
kunit: qemu_configs: Add 32-bit big endian ARM configuration
kunit: tool: Don't overwrite test status based on subtest counts
kunit: tool: Add test for nested test result reporting
kunit: respect KBUILD_OUTPUT env variable by default
kunit: Protect KUNIT_BINARY_STR_ASSERTION against ERR_PTR values
test_list_sort: fix up const mismatch
kunit: fix up const mis-match in many assert functions
rust: kunit: add __rust_helper to helpers
* A good refactoring of arm-charlcd to use modern kernel APIs
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Merge tag 'auxdisplay-v6.20-1' of git://git.kernel.org/pub/scm/linux/kernel/git/andy/linux-auxdisplay
Pull auxdisplay updates from Andy Shevchenko:
- A good refactoring of arm-charlcd to use modern kernel APIs
* tag 'auxdisplay-v6.20-1' of git://git.kernel.org/pub/scm/linux/kernel/git/andy/linux-auxdisplay:
auxdisplay: max6959: Replace slab.h with device/devres.h
auxdisplay: arm-charlcd: Remove redundant ternary operators
auxdisplay: arm-charlcd: Join string literals back
auxdisplay: arm-charlcd: Use readl_poll_timeout
auxdisplay: arm-charlcd: Don't use "proxy" headers
auxdisplay: arm-charlcd: drop of_match_ptr()
auxdisplay: arm-charlcd: Remove unneeded info message
auxdisplay: arm-charlcd: convert to use device managed APIs
auxdisplay: arm-charlcd: fix release_mem_region() size
The vduse_iova_range_v2 and vduse_iotlb_entry_v2 structures are both
defined in a way that adds implicit padding and is incompatible between
i386 and x86_64 userspace because of the different structure alignment
requirements. Building the header with -Wpadded shows these new warnings:
vduse.h:305:1: error: padding struct size to alignment boundary with 4 bytes [-Werror=padded]
vduse.h:374:1: error: padding struct size to alignment boundary with 4 bytes [-Werror=padded]
Change the amount of padding in these two structures to align them to
64 bit words and avoid those problems. Since the v1 vduse_iotlb_entry
already has an inconsistent size, do not attempt to reuse the structure
but rather list the members indiviudally, with a fixed amount of
padding.
Fixes: 079212f687 ("vduse: add vq group asid support")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Message-Id: <20260202224835.559538-1-arnd@kernel.org>
- 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.
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Merge tag 'kvmarm-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD
KVM/arm64 updates for 7.0
- 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.
1. Add more CPUCFG mask bits.
2. Improve feature detection.
3. Add FPU/LBT delay load support.
4. Set default return value in KVM IO bus ops.
5. Add paravirt preempt feature support.
6. Add KVM steal time test case for tools/selftests.
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Merge tag 'loongarch-kvm-6.20' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson into HEAD
LoongArch KVM changes for v6.20
1. Add more CPUCFG mask bits.
2. Improve feature detection.
3. Add FPU/LBT delay load support.
4. Set default return value in KVM IO bus ops.
5. Add paravirt preempt feature support.
6. Add KVM steal time test case for tools/selftests.
This release is almost all abut driers, there's very little core work
here, although some of that driver work is in more generic areas like
SDCA and SOF:
- Generic SDCA support for reporting jack events.
- Continuing platform support, cleanup and feature improements for the
AMD, Intel, Qualcomm and SOF code.
- Platform description improvements for the Cirrus drivers.
- Support for NXP i.MX952, Realtek RT1320 and RT5575, and Sophogo
CV1800B.
We also pulled in one small SPI API update and some more substantial
regmap work (cache description improvements) for use in drivers.
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Merge tag 'asoc-v6.20' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus
ASoC: Updates for v7.0
This release is almost all abut driers, there's very little core work
here, although some of that driver work is in more generic areas like
SDCA and SOF:
- Generic SDCA support for reporting jack events.
- Continuing platform support, cleanup and feature improements for the
AMD, Intel, Qualcomm and SOF code.
- Platform description improvements for the Cirrus drivers.
- Support for NXP i.MX952, Realtek RT1320 and RT5575, and Sophogo
CV1800B.
We also pulled in one small SPI API update and some more substantial
regmap work (cache description improvements) for use in drivers.
When ntfs_read_run_nb_ra() is invoked with run == NULL the code later
assumes run is valid and may call run_get_entry(NULL, ...), and also
uses clen/idx without initializing them. Smatch reported uninitialized
variable warnings and this can lead to undefined behaviour. This patch
fixes it.
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Closes: https://lore.kernel.org/r/202512230646.v5hrYXL0-lkp@intel.com/
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Vendor ID 0x0661 is assigned to Hamamatsu Photonics K.K.,
but is used by iBasso for iBasso DC04U (0x0661:0x0883),
which supports native DSD playback.
This patch adds QUIRK_FLAG_DSD_RAW for iBasso DC04U, enabling
native DSD playback (DSD_U32_BE). The change has been verified
on Arch Linux using mpd and pw-cat.
Signed-off-by: Qihang Guo <v-conet@outlook.com>
Link: https://patch.msgid.link/TYYPR01MB14098529E0BD900921BE6F42CF465A@TYYPR01MB14098.jpnprd01.prod.outlook.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
ksmbd_chann_list xarray lacks synchronization, allowing use-after-free in
multi-channel sessions (between lookup_chann_list() and ksmbd_chann_del).
Adds rw_semaphore chann_lock to struct ksmbd_session and protects
all xa_load/xa_store/xa_erase accesses.
Cc: stable@vger.kernel.org
Reported-by: Igor Stepansky <igor.stepansky@orca.security>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Features in FEATURE_TESTS_BASIC will be set as being available if
test-all.c builds, so since the rust test isn't included in test-all.c,
we can't have 'rust' in there, remove it from FEATURE_TESTS_BASIC and
use feature-check so that it tries to build test-rust.bin, doing the
actual feature detection.
On a system lacking a rust compiler:
Makefile.config:1158: Rust is not found. Test workloads with rust are disabled.
Auto-detecting system features:
... libdw: [ on ]
... glibc: [ on ]
... libelf: [ on ]
... libnuma: [ on ]
... numa_num_possible_cpus: [ on ]
... libpython: [ on ]
... libcapstone: [ on ]
... llvm-perf: [ on ]
... zlib: [ on ]
... lzma: [ on ]
... bpf: [ on ]
... libaio: [ on ]
... libzstd: [ on ]
... libopenssl: [ on ]
... rust: [ OFF ]
$ cat /tmp/build/perf-tools-next/feature/test-rust.make.output
/bin/sh: line 1: rustc: command not found
$ file /tmp/build/perf-tools-next/feature/test-rust.bin
/tmp/build/perf-tools-next/feature/test-rust.bin: cannot open `/tmp/build/perf-tools-next/feature/test-rust.bin' (No such file or directory)
$
$ perf -vv | grep RUST
rust: [ OFF ] # HAVE_RUST_SUPPORT
$
And after installing it:
... rust: [ on ]
$ cat /tmp/build/perf-tools-next/feature/test-rust.make.output
$ file /tmp/build/perf-tools-next/feature/test-rust.bin
/tmp/build/perf-tools-next/feature/test-rust.bin: ELF 64-bit LSB pie executable, x86-64, version 1 (SYSV), dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2, BuildID[sha1]=9c416edf673ee3705b97bae893a99a6fcf1ee258, for GNU/Linux 3.2.0, with debug_info, not stripped
$
$ perf -vv | grep RUST
rust: [ on ] # HAVE_RUST_SUPPORT
$
Fixes: 6a32fa5ccd ("tools build: Add a feature test for rust compiler")
Cc: Dmitrii Dolgov <9erthalion6@gmail.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Fix the copyright banner on smb1maperror.c to be the same as netmisc.c.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
ARM big-endian has two different binary formats. BE8 and the older BE32.
They are incompatible with each other.
Handle those when evaluating ARCH_CC_CAN_LINK by using the respective
configuration of the kernel itself.
Fixes: 3df8585afd ("ARM: 9469/1: Implement ARCH_HAS_CC_CAN_LINK")
Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Update the device ID for Dell XPS 13 7390 2-in-1 in the quirk
`QUIRK_EDP_LIMIT_RATE_HBR2` entry. The previous ID (0x8a12) was
incorrect; the correct ID is 0x8a52.
Closes: https://gitlab.freedesktop.org/drm/i915/kernel/-/issues/5969
Fixes: 21c586d923 ("drm/i915/dp: Add device specific quirk to limit eDP rate to HBR2")
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Cc: <stable@vger.kernel.org> # v6.18+
Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Reviewed-by: Suraj Kandpal <suraj.kandpal@intel.com>
Link: https://patch.msgid.link/20251226043359.2553-1-ankit.k.nautiyal@intel.com
(cherry picked from commit c7c30c4093)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
* ras/edac-drivers:
EDAC/r82600: Remove this obsolete driver
EDAC/i82443bxgx: Remove driver that has been marked broken since 2007
EDAC/igen6: Add more Intel Panther Lake-H SoCs support
EDAC/igen6: Make masks of {MCHBAR, TOM, TOUUD, ECC_ERROR_LOG} configurable
EDAC/igen6: Add two Intel Amston Lake SoCs support
EDAC/i5400: Fix snprintf() limit calculation in calculate_dimm_size()
EDAC/i5000: Fix snprintf() size calculation in calculate_dimm_size()
* ras/edac-misc:
EDAC/amd64: Avoid a -Wformat-security warning
* ras/edac-amd-atl:
RAS/AMD/ATL: Remove an unneeded semicolon
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
ALSA OSS mixer layer calls the kcontrol ops rather individually, and
pending calls might be not always caught at disconnecting the device.
For avoiding the potential UAF scenarios, add sanity checks of the
card disconnection at each entry point of OSS mixer accesses. The
rwsem is taken just before that check, hence the rest context should
be covered by that properly.
Link: https://patch.msgid.link/20260209121212.171430-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
The Makefile for the SPI tools creates an include/linux/spi folder and some
symlinks inside it. After running `make -C spi/tools`, this folder shows up
as untracked in the git status.
Add the above folder to the .gitignore file.
Fixes: f325b73dc4 ("spi: tools: move to tools buildsystem")
Signed-off-by: Francesco Lavra <flavra@baylibre.com>
Link: https://patch.msgid.link/20260209095001.556495-1-flavra@baylibre.com
Signed-off-by: Mark Brown <broonie@kernel.org>
The _hda_dsp_stream_put() function now depends on the
snd_hdac_ext_stream_release() interface from SND_HDA_EXT_CORE:
x86_64-linux-ld: vmlinux.o: in function `_hda_dsp_stream_put':
hda-stream.c:(.text+0xfac605): undefined reference to `snd_hdac_ext_stream_release'
Select this symbol the same way the other users do.
Fixes: 89e1d632bb ("ASoC: SOF: Intel: add hda_dsp_stream_pair_get/put helpers")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://patch.msgid.link/20260209070901.857700-1-arnd@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Some platforms rely on modalias to customize configuration,
the product family helps to identify the hardware.
Add product_family to modalias for better utilization.
This patch mimics commit e26f023e01 ("firmware/dmi:
Include product_sku info to modalias") that did the same
for product_sku, and commit f97a2103f1 ("firmware: dmi:
Move product_sku info to the end of the modalias") that
fixed regressions caused by the added field not being in
the end of the list.
Signed-off-by: Antoine Lassagne <antoine.lassagne@canonical.com>
Signed-off-by: Jean Delvare <jdelvare@suse.de>
The ceph_uninline_data function was missing proper snapshot context
handling for its OSD write operations. Both CEPH_OSD_OP_CREATE and
CEPH_OSD_OP_WRITE requests were passing NULL instead of the appropriate
snapshot context, which could lead to unnecessary object clone.
Reproducer:
../src/vstart.sh --new -x --localhost --bluestore
// turn on cephfs inline data
./bin/ceph fs set a inline_data true --yes-i-really-really-mean-it
// allow fs_a client to take snapshot
./bin/ceph auth caps client.fs_a mds 'allow rwps fsname=a' mon 'allow r fsname=a' osd 'allow rw tag cephfs data=a'
// mount cephfs with fuse, since kernel cephfs doesn't support inline write
ceph-fuse --id fs_a -m 127.0.0.1:40318 --conf ceph.conf -d /mnt/mycephfs/
// bump snapshot seq
mkdir /mnt/mycephfs/.snap/snap1
echo "foo" > /mnt/mycephfs/test
// umount and mount it again using kernel cephfs client
umount /mnt/mycephfs
mount -t ceph fs_a@.a=/ /mnt/mycephfs/ -o conf=./ceph.conf
echo "bar" >> /mnt/mycephfs/test
./bin/rados listsnaps -p cephfs.a.data $(printf "%x\n" $(stat -c %i /mnt/mycephfs/test)).00000000
will see this object does unnecessary clone
1000000000a.00000000 (seq:2):
cloneid snaps size overlap
2 2 4 []
head - 8
but it's expected to see
10000000000.00000000 (seq:2):
cloneid snaps size overlap
head - 8
since there's no snapshot between these 2 writes
clone happened because the first osd request CEPH_OSD_OP_CREATE doesn't
pass snap context so object is created with snap seq 0, but later data
writeback is equipped with snapshot context.
snap.seq(1) > object snap seq(0), so osd does object clone.
This fix properly acquiring the snapshot context before performing
write operations.
Signed-off-by: ethanwu <ethanwu@synology.com>
Reviewed-by: Viacheslav Dubeyko <Slava.Dubeyko@ibm.com>
Tested-by: Viacheslav Dubeyko <Slava.Dubeyko@ibm.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
The generic CC_CAN_LINK detection does not handle different byte orders
or ABIs. This may lead to userprogs which are not actually runnable on
the target kernel.
Use architecture-specific logic supporting byte orders instead.
Modern 64-bit toolchains default to a n32 libc, which are not
supported by all kernel configurations, as MIPS32_N32 is optional.
On 64-bit, test for a n32 ABI libc first and fall back to o64 and
o32 if necessary.
Link: https://lore.kernel.org/lkml/20260105100507-14db55e3-aa71-48bf-a6ac-33b186bd082f@linutronix.de/
Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Since commit 6e690d54cf ("serial: 8250: fix return error code in
serial8250_request_std_resource()"), registering an 8250 MMIO port
without mapbase no longer works, as the resource range is derived from
mapbase/mapsize.
Populate mapbase and mapsize accordingly. Also drop ugly membase KSEG1
pointer and set UPF_IOREMAP instead, letting the 8250 core perform the
ioremap.
Fixes: 6e690d54cf ("serial: 8250: fix return error code in serial8250_request_std_resource()")
Cc: stable@vger.kernel.org
Reported-by: Waldemar Brodkorb <wbx@openadk.org>
Link: https://lore.kernel.org/linux-mips/aX-d0ShTplHKZT33@waldemar-brodkorb.de/
Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
On MIPS, __current_thread_info is defined as global register variable
locating in $gp, and is simply assigned with new address during kernel
relocation.
This however is broken with LLVM, which always restores $gp if it finds
$gp is clobbered in any form, including when intentionally through a
global register variable. This is against GCC's documentation[1], which
requires a callee-saved register used as global register variable not to
be restored if it's clobbered.
As a result, $gp will continue to point to the unrelocated kernel after
the epilog of relocate_kernel(), leading to an early crash in init_idle,
[ 0.000000] CPU 0 Unable to handle kernel paging request at virtual address 0000000000000000, epc == ffffffff81afada8, ra == ffffffff81afad90
[ 0.000000] Oops[#1]:
[ 0.000000] CPU: 0 UID: 0 PID: 0 Comm: swapper Tainted: G W 6.19.0-rc5-00262-gd3eeb99bbc99-dirty #188 VOLUNTARY
[ 0.000000] Tainted: [W]=WARN
[ 0.000000] Hardware name: loongson,loongson64v-4core-virtio
[ 0.000000] $ 0 : 0000000000000000 0000000000000000 0000000000000001 0000000000000000
[ 0.000000] $ 4 : ffffffff80b80ec0 ffffffff80b53d48 0000000000000000 00000000000f4240
[ 0.000000] $ 8 : 0000000000000100 ffffffff81d82f80 ffffffff81d82f80 0000000000000001
[ 0.000000] $12 : 0000000000000000 ffffffff81776f58 00000000000005da 0000000000000002
[ 0.000000] $16 : ffffffff80b80e40 0000000000000000 ffffffff80b81614 9800000005dfbe80
[ 0.000000] $20 : 00000000540000e0 ffffffff81980000 0000000000000000 ffffffff80f81c80
[ 0.000000] $24 : 0000000000000a26 ffffffff8114fb90
[ 0.000000] $28 : ffffffff80b50000 ffffffff80b53d40 0000000000000000 ffffffff81afad90
[ 0.000000] Hi : 0000000000000000
[ 0.000000] Lo : 0000000000000000
[ 0.000000] epc : ffffffff81afada8 init_idle+0x130/0x270
[ 0.000000] ra : ffffffff81afad90 init_idle+0x118/0x270
[ 0.000000] Status: 540000e2 KX SX UX KERNEL EXL
[ 0.000000] Cause : 00000008 (ExcCode 02)
[ 0.000000] BadVA : 0000000000000000
[ 0.000000] PrId : 00006305 (ICT Loongson-3)
[ 0.000000] Process swapper (pid: 0, threadinfo=(____ptrval____), task=(____ptrval____), tls=0000000000000000)
[ 0.000000] Stack : 9800000005dfbf00 ffffffff8178e950 0000000000000000 0000000000000000
[ 0.000000] 0000000000000000 ffffffff81970000 000000000000003f ffffffff810a6528
[ 0.000000] 0000000000000001 9800000005dfbe80 9800000005dfbf00 ffffffff81980000
[ 0.000000] ffffffff810a6450 ffffffff81afb6c0 0000000000000000 ffffffff810a2258
[ 0.000000] ffffffff81d82ec8 ffffffff8198d010 ffffffff81b67e80 ffffffff8197dd98
[ 0.000000] ffffffff81d81c80 ffffffff81930000 0000000000000040 0000000000000000
[ 0.000000] 0000000000000000 0000000000000000 0000000000000000 0000000000000000
[ 0.000000] 0000000000000000 000000000000009e ffffffff9fc01000 0000000000000000
[ 0.000000] 0000000000000000 0000000000000000 0000000000000000 0000000000000000
[ 0.000000] 0000000000000000 ffffffff81ae86dc ffffffff81b3c741 0000000000000002
[ 0.000000] ...
[ 0.000000] Call Trace:
[ 0.000000] [<ffffffff81afada8>] init_idle+0x130/0x270
[ 0.000000] [<ffffffff81afb6c0>] sched_init+0x5c8/0x6c0
[ 0.000000] [<ffffffff81ae86dc>] start_kernel+0x27c/0x7a8
This bug has been reported to LLVM[2] and affects version from (at
least) 18 to 21. Let's work around this by using inline assembly to
assign $gp before a fix is widely available.
Cc: stable@vger.kernel.org
Link: https://gcc.gnu.org/onlinedocs/gcc-15.2.0/gcc/Global-Register-Variables.html # [1]
Link: https://github.com/llvm/llvm-project/issues/176546 # [2]
Signed-off-by: Yao Zi <me@ziyao.cc>
Acked-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
The existing approach where ceph_x_challenge_blob is encrypted with the
client's secret key and then the digest derived from the ciphertext is
used for the test doesn't work with CEPH_CRYPTO_AES256KRB5 because the
confounder randomizes the ciphertext: the client and the server get two
different ciphertexts and therefore two different digests.
msgr1 signatures are affected the same way: a digest derived from the
ciphertext for the message's "sigblock" is what becomes a signature and
the two sides disagree on the expected value.
For CEPH_CRYPTO_AES256KRB5 (and potential future encryption schemes),
switch to HMAC-SHA256 function keyed in the same way as the existing
encryption. For CEPH_CRYPTO_AES, everything is preserved as is.
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
This is based on AES256-CTS-HMAC384-192 crypto algorithm per RFC 8009
(i.e. Kerberos 5, hence the name) with custom-defined key usage numbers.
The implementation allows a given key to have/be linked to between one
and three usage numbers.
The existing CEPH_CRYPTO_AES remains in place and unchanged. The
usage_slot parameter that needed to be added to ceph_crypt() and its
wrappers is simply ignored there.
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
In preparation for bringing in a new encryption scheme/key type,
decouple decoding or cloning the key from allocating required crypto
API objects and setting them up. The rationale is that a) in some
cases a shallow clone is sufficient and b) ceph_crypto_key_prepare()
may grow additional parameters that would be inconvenient to provide
at the point the key is originally decoded.
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
- introduce the notion of a data offset for ceph_x_encrypt_offset()
to allow for e.g. confounder to be prepended before the encryption
header in the future. For CEPH_CRYPTO_AES, the data offset is 0
(i.e. nothing is prepended).
- adjust ceph_x_encrypt_buflen() accordingly and make it account for
PKCS#7 padding that is used by CEPH_CRYPTO_AES precisely instead of
just always adding 16.
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
When decoding the key, verify that the key material would fit into
a fixed-size buffer in process_auth_done() and generally has a sane
length.
The new CEPH_MAX_KEY_LEN check replaces the existing check for a key
with no key material which is a) not universal since CEPH_CRYPTO_NONE
has to be excluded and b) doesn't provide much value since a smaller
than needed key is just as invalid as no key -- this has to be handled
elsewhere anyway.
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
In case getting VDDIO regulator returned an error, WCN power sequencing
driver passes ret to dev_err_probe() as the error code, however it is
known that ret is 0 at this point. Pass PTR_ERR(ctx->vddio) instead.
Fixes: 0eb85f468e ("power: sequencing: qcom-wcn: add support for WCN39xx")
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Closes: https://lore.kernel.org/r/aYXvQxKqmjP_sdCd@stanley.mountain/
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Link: https://patch.msgid.link/20260207-fix-wcn39xx-v1-1-df0606108ce2@oss.qualcomm.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
syzbot is reporting that "struct xfrm_state" refcount is leaking.
unregister_netdevice: waiting for netdevsim0 to become free. Usage count = 2
ref_tracker: netdev@ffff888052f24618 has 1/1 users at
__netdev_tracker_alloc include/linux/netdevice.h:4400 [inline]
netdev_tracker_alloc include/linux/netdevice.h:4412 [inline]
xfrm_dev_state_add+0x3a5/0x1080 net/xfrm/xfrm_device.c:316
xfrm_state_construct net/xfrm/xfrm_user.c:986 [inline]
xfrm_add_sa+0x34ff/0x5fa0 net/xfrm/xfrm_user.c:1022
xfrm_user_rcv_msg+0x58e/0xc00 net/xfrm/xfrm_user.c:3507
netlink_rcv_skb+0x158/0x420 net/netlink/af_netlink.c:2550
xfrm_netlink_rcv+0x71/0x90 net/xfrm/xfrm_user.c:3529
netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
netlink_unicast+0x5aa/0x870 net/netlink/af_netlink.c:1344
netlink_sendmsg+0x8c8/0xdd0 net/netlink/af_netlink.c:1894
sock_sendmsg_nosec net/socket.c:727 [inline]
__sock_sendmsg net/socket.c:742 [inline]
____sys_sendmsg+0xa5d/0xc30 net/socket.c:2592
___sys_sendmsg+0x134/0x1d0 net/socket.c:2646
__sys_sendmsg+0x16d/0x220 net/socket.c:2678
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xcd/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
This is because commit d77e38e612 ("xfrm: Add an IPsec hardware
offloading API") implemented xfrm_dev_unregister() as no-op despite
xfrm_dev_state_add() from xfrm_state_construct() acquires a reference
to "struct net_device".
I guess that that commit expected that NETDEV_DOWN event is fired before
NETDEV_UNREGISTER event fires, and also assumed that xfrm_dev_state_add()
is called only if (dev->features & NETIF_F_HW_ESP) != 0.
Sabrina Dubroca identified steps to reproduce the same symptoms as below.
echo 0 > /sys/bus/netdevsim/new_device
dev=$(ls -1 /sys/bus/netdevsim/devices/netdevsim0/net/)
ip xfrm state add src 192.168.13.1 dst 192.168.13.2 proto esp \
spi 0x1000 mode tunnel aead 'rfc4106(gcm(aes))' $key 128 \
offload crypto dev $dev dir out
ethtool -K $dev esp-hw-offload off
echo 0 > /sys/bus/netdevsim/del_device
Like these steps indicate, the NETIF_F_HW_ESP bit can be cleared after
xfrm_dev_state_add() acquired a reference to "struct net_device".
Also, xfrm_dev_state_add() does not check for the NETIF_F_HW_ESP bit
when acquiring a reference to "struct net_device".
Commit 03891f820c ("xfrm: handle NETDEV_UNREGISTER for xfrm device")
re-introduced the NETDEV_UNREGISTER event to xfrm_dev_event(), but that
commit for unknown reason chose to share xfrm_dev_down() between the
NETDEV_DOWN event and the NETDEV_UNREGISTER event.
I guess that that commit missed the behavior in the previous paragraph.
Therefore, we need to re-introduce xfrm_dev_unregister() in order to
release the reference to "struct net_device" by unconditionally flushing
state and policy.
Reported-by: syzbot+881d65229ca4f9ae8c84@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=881d65229ca4f9ae8c84
Fixes: d77e38e612 ("xfrm: Add an IPsec hardware offloading API")
Cc: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Setting up the interface when suspended/resumeing fail on this card.
Adding a reset and delay quirk will eliminate this problem.
usb 1-1: New USB device found, idVendor=001f, idProduct=0b21
usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
usb 1-1: Product: AB13X USB Audio
usb 1-1: Manufacturer: Generic
usb 1-1: SerialNumber: 20210926172016
Signed-off-by: Lianqin Hu <hulianqin@vivo.com>
Link: https://patch.msgid.link/TYUPR06MB6217522D0DB6E2C9DF46B56ED265A@TYUPR06MB6217.apcprd06.prod.outlook.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Enable p2pdma on the mlx5 PCI device to allow DMABUF-based peer-to-peer
DMA mappings.
Add implementation of the mmap_get_pfns and pgoff_to_mmap_entry device
operations required for DMABUF support in the mlx5 RDMA driver.
The pgoff_to_mmap_entry operation converts a page offset to the
corresponding rdma_user_mmap_entry by extracting the command and index
from the offset and looking it up in the ucontext's mmap_xa.
The mmap_get_pfns operation retrieves the physical address and length
from the mmap entry and obtains the p2pdma provider for the underlying
PCI device, which is needed for peer-to-peer DMA operations with
DMABUFs.
Signed-off-by: Yishai Hadas <yishaih@nvidia.com>
Signed-off-by: Edward Srouji <edwards@nvidia.com>
Link: https://patch.msgid.link/20260201-dmabuf-export-v3-3-da238b614fe3@nvidia.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
