Yves-Alexis Perez reported commit 4ef9ad19e1 ("mm: huge_memory: don't
force huge page alignment on 32 bit") didn't work for x86_32 [1]. It is
because x86_32 uses CONFIG_X86_32 instead of CONFIG_32BIT.
!CONFIG_64BIT should cover all 32 bit machines.
[1] https://lore.kernel.org/linux-mm/CAHbLzkr1LwH3pcTgM+aGQ31ip2bKqiqEQ8=FQB+t2c3dhNKNHA@mail.gmail.com/
Link: https://lkml.kernel.org/r/20240712155855.1130330-1-yang@os.amperecomputing.com
Fixes: 4ef9ad19e1 ("mm: huge_memory: don't force huge page alignment on 32 bit")
Signed-off-by: Yang Shi <yang@os.amperecomputing.com>
Reported-by: Yves-Alexis Perez <corsac@debian.org>
Tested-by: Yves-Alexis Perez <corsac@debian.org>
Acked-by: David Hildenbrand <david@redhat.com>
Cc: Ben Hutchings <ben@decadent.org.uk>
Cc: Christoph Lameter <cl@linux.com>
Cc: Jiri Slaby <jirislaby@kernel.org>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Rik van Riel <riel@surriel.com>
Cc: Salvatore Bonaccorso <carnil@debian.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: <stable@vger.kernel.org> [6.8+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Commit 3bd786f76d ("mm: convert do_set_pte() to set_pte_range()")
replaced do_set_pte() with set_pte_range() and that introduced a
regression in the following faulting path of non-anonymous vmas which
caused the PTE for the faulting address to be marked as old instead of
young.
handle_pte_fault()
do_pte_missing()
do_fault()
do_read_fault() || do_cow_fault() || do_shared_fault()
finish_fault()
set_pte_range()
The polarity of prefault calculation is incorrect. This leads to prefault
being incorrectly set for the faulting address. The following check will
incorrectly mark the PTE old rather than young. On some architectures
this will cause a double fault to mark it young when the access is
retried.
if (prefault && arch_wants_old_prefaulted_pte())
entry = pte_mkold(entry);
On a subsequent fault on the same address, the faulting path will see a
non NULL vmf->pte and instead of reaching the do_pte_missing() path, PTE
will then be correctly marked young in handle_pte_fault() itself.
Due to this bug, performance degradation in the fault handling path will
be observed due to unnecessary double faulting.
Link: https://lkml.kernel.org/r/20240710014539.746200-1-rtummala@nvidia.com
Fixes: 3bd786f76d ("mm: convert do_set_pte() to set_pte_range()")
Signed-off-by: Ram Tummala <rtummala@nvidia.com>
Reviewed-by: Yin Fengwei <fengwei.yin@intel.com>
Cc: Alistair Popple <apopple@nvidia.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Yin Fengwei <fengwei.yin@intel.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
The 'single-channel' property is an uint32, not an array, so 'items' is
an incorrect constraint. This didn't matter until dtschema recently
changed how properties are decoded. This results in this warning:
Documentation/devicetree/bindings/iio/adc/adi,ad7192.example.dtb: adc@0: \
channel@1:single-channel: 1 is not of type 'array'
Fixes: caf7b7632b ("dt-bindings: iio: adc: ad7192: Add AD7194 support")
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20240723230904.1299744-1-robh@kernel.org
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Release 2024.07.26:
Enable turbostat extensions to add both perf and PMT
(Intel Platform Monitoring Technology) counters from the cmdline.
Demonstrate PMT access with built-in support for Meteor Lake's Die%c6 counter.
This commit:
Clean up white-space nits introduced since version 2024.05.10
Signed-off-by: Len Brown <len.brown@intel.com>
Some counters, like cpu/cache-misses/, expose and require umask=%x
parameter alongside event=%x in the sysfs perf counter's event file.
This change make sure we parse and use it when opening user added
counters.
Signed-off-by: Patryk Wlazlyn <patryk.wlazlyn@linux.intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Add a general description of the user interface for adding PMT
counters with the new --add pmt,... option.
Provide a complete example for requesting two counters.
Signed-off-by: Patryk Wlazlyn <patryk.wlazlyn@linux.intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Provide a definition for metadata that allows reading DC6 residency
counter via PMT and exposes it as a builtin counter.
Note that this residency counter is updated and read via
entirely different mechanisms vs the MSR-based residency counters.
On MTL processors, there are times when Die%c6 will report above 100%.
This is still useful, but don't expect 3 digits of precision...
Signed-off-by: Patryk Wlazlyn <patryk.wlazlyn@linux.intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Allows users to read Intel PMT (Platform Monitoring Technology)
counters, providing interface similar to one used to add MSR and perf
counters. Because PMT is exposed as a raw MMIO range, without metadata,
user has to supply the necessary information to find and correctly
display the requested counter.
Signed-off-by: Patryk Wlazlyn <patryk.wlazlyn@linux.intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
- Add support for configuring the boot message on line displays,
- Miscellaneous fixes and improvements.
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Merge tag 'auxdisplay-for-v6.11-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k
Pull auxdisplay updates from Geert Uytterhoeven:
- add support for configuring the boot message on line displays
- miscellaneous fixes and improvements
* tag 'auxdisplay-for-v6.11-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
auxdisplay: ht16k33: Drop reference after LED registration
auxdisplay: Use sizeof(*pointer) instead of sizeof(type)
auxdisplay: hd44780: add missing MODULE_DESCRIPTION() macro
auxdisplay: linedisp: add missing MODULE_DESCRIPTION() macro
auxdisplay: linedisp: Support configuring the boot message
auxdisplay: charlcd: Provide a forward declaration
A collection of the fixes gathered since the previous PR.
We see a bit large LOCs at a HD-audio quirk, but that's only bulk
COEF data, hence it's safe to take. In addition to that, there
were two minor fixes for MIDI 2.0 handling for ALSA core, and the
rest are all rather random small and device-specific fixes.
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Merge tag 'sound-fix-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"A collection of fixes gathered since the previous pull.
We see a bit large LOCs at a HD-audio quirk, but that's only bulk COEF
data, hence it's safe to take. In addition to that, there were two
minor fixes for MIDI 2.0 handling for ALSA core, and the rest are all
rather random small and device-specific fixes"
* tag 'sound-fix-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ASoC: fsl-asoc-card: Dynamically allocate memory for snd_soc_dai_link_components
ASoC: amd: yc: Support mic on Lenovo Thinkpad E16 Gen 2
ALSA: hda/realtek: Implement sound init sequence for Samsung Galaxy Book3 Pro 360
ALSA: hda/realtek: cs35l41: Fixup remaining asus strix models
ASoC: SOF: ipc4-topology: Preserve the DMA Link ID for ChainDMA on unprepare
ASoC: SOF: ipc4-topology: Only handle dai_config with HW_PARAMS for ChainDMA
ALSA: ump: Force 1 Group for MIDI1 FBs
ALSA: ump: Don't update FB name for static blocks
ALSA: usb-audio: Add a quirk for Sonix HD USB Camera
ASoC: TAS2781: Fix tasdev_load_calibrated_data()
ASoC: tegra: select CONFIG_SND_SIMPLE_CARD_UTILS
ASoC: Intel: use soc_intel_is_byt_cr() only when IOSF_MBI is reachable
ALSA: usb-audio: Move HD Webcam quirk to the right place
ALSA: hda: tas2781: mark const variables as __maybe_unused
ALSA: usb-audio: Fix microphone sound on HD webcam.
ASoC: sof: amd: fix for firmware reload failure in Vangogh platform
ASoC: Intel: Fix RT5650 SSP lookup
ASOC: SOF: Intel: hda-loader: only wait for HDaudio IOC for IPC4 devices
ASoC: SOF: imx8m: Fix DSP control regmap retrieval
amdgpu:
- Bump driver version for GFX12 DCC
- DC documention warning fixes
- VCN unified queue power fix
- SMU fix
- RAS fix
- Display corruption fix
- SDMA 5.2 workaround
- GFX12 fixes
- Uninitialized variable fix
- VCN/JPEG 4.0.3 fixes
- Misc display fixes
- RAS fixes
- VCN4/5 harvest fix
- GPU reset fix
i915:
- Reset intel_dp->link_trained before retraining the link
- Don't switch the LTTPR mode on an active link
- Do not consider preemption during execlists_dequeue for gen8
- Allow NULL memory region
xe:
- xe_exec ioctl minor fix on sync entry cleanup upon error
- SRIOV: limit VF LMEM provisioning
- Wedge mode fixes
v3d:
- fix indirect dispatch on newer v3d revs
panel:
- fix panel backlight bindings
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Merge tag 'drm-next-2024-07-26' of https://gitlab.freedesktop.org/drm/kernel
Pull drm fixes from Dave Airlie:
"Fixes for rc1, mostly amdgpu, i915 and xe, with some other misc ones,
doesn't seem to be anything too serious.
amdgpu:
- Bump driver version for GFX12 DCC
- DC documention warning fixes
- VCN unified queue power fix
- SMU fix
- RAS fix
- Display corruption fix
- SDMA 5.2 workaround
- GFX12 fixes
- Uninitialized variable fix
- VCN/JPEG 4.0.3 fixes
- Misc display fixes
- RAS fixes
- VCN4/5 harvest fix
- GPU reset fix
i915:
- Reset intel_dp->link_trained before retraining the link
- Don't switch the LTTPR mode on an active link
- Do not consider preemption during execlists_dequeue for gen8
- Allow NULL memory region
xe:
- xe_exec ioctl minor fix on sync entry cleanup upon error
- SRIOV: limit VF LMEM provisioning
- Wedge mode fixes
v3d:
- fix indirect dispatch on newer v3d revs
panel:
- fix panel backlight bindings"
* tag 'drm-next-2024-07-26' of https://gitlab.freedesktop.org/drm/kernel: (39 commits)
drm/amdgpu: reset vm state machine after gpu reset(vram lost)
drm/amdgpu: add missed harvest check for VCN IP v4/v5
drm/amdgpu: Fix eeprom max record count
drm/amdgpu: fix ras UE error injection failure issue
drm/amd/display: Remove ASSERT if significance is zero in math_ceil2
drm/amd/display: Check for NULL pointer
drm/amdgpu/vcn: Use offsets local to VCN/JPEG in VF
drm/amdgpu: Add empty HDP flush function to VCN v4.0.3
drm/amdgpu: Add empty HDP flush function to JPEG v4.0.3
drm/amd/amdgpu: Fix uninitialized variable warnings
drm/amdgpu: Fix atomics on GFX12
drm/amdgpu/sdma5.2: Update wptr registers as well as doorbell
drm/i915: Allow NULL memory region
drm/i915/gt: Do not consider preemption during execlists_dequeue for gen8
dt-bindings: display: panel: samsung,atna33xc20: Document ATNA45AF01
drm/xe: Don't suspend device upon wedge
drm/xe: Wedge the entire device
drm/xe/pf: Limit fair VF LMEM provisioning
drm/xe/exec: Fix minor bug related to xe_sync_entry_cleanup
drm/amd/display: fix corruption with high refresh rates on DCN 3.0
...
Test adds several perf counters from msr, cstate_core and cstate_pkg
groups and checks if the columns for those counters show up.
The test skips the counters that are not present. It is not an error,
but the test may not be as exhaustive.
Signed-off-by: Patryk Wlazlyn <patryk.wlazlyn@linux.intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
The test requests BICs that are dependent on SMI, APERF and MPERF
counters and checks if the columns show up in the output and the
turbostat doesn't crash. Read the counters in both --no-msr
and --no-perf mode.
The test skips counters that are not present or user does not have
permissions to read. It is not an error, but the test may not be as
exhaustive.
Signed-off-by: Patryk Wlazlyn <patryk.wlazlyn@linux.intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
- Fix KMSAN build breakage caused by the conflict between s390 and
mm-stable trees
- Add KMSAN page markers for ptdump
- Add runtime constant support
- Fix __pa/__va for modules under non-GPL licenses by exporting necessary
vm_layout struct with EXPORT_SYMBOL to prevent linkage problems
- Fix an endless loop in the CF_DIAG event stop in the CPU Measurement
Counter Facility code when the counter set size is zero
- Remove the PROTECTED_VIRTUALIZATION_GUEST config option and enable
its functionality by default
- Support allocation of multiple MSI interrupts per device and improve
logging of architecture-specific limitations
- Add support for lowcore relocation as a debugging feature to catch
all null ptr dereferences in the kernel address space, improving
detection beyond the current implementation's limited write access
protection
- Clean up and rework CPU alternatives to allow for callbacks and early
patching for the lowcore relocation
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Merge tag 's390-6.11-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull more s390 updates from Vasily Gorbik:
- Fix KMSAN build breakage caused by the conflict between s390 and
mm-stable trees
- Add KMSAN page markers for ptdump
- Add runtime constant support
- Fix __pa/__va for modules under non-GPL licenses by exporting
necessary vm_layout struct with EXPORT_SYMBOL to prevent linkage
problems
- Fix an endless loop in the CF_DIAG event stop in the CPU Measurement
Counter Facility code when the counter set size is zero
- Remove the PROTECTED_VIRTUALIZATION_GUEST config option and enable
its functionality by default
- Support allocation of multiple MSI interrupts per device and improve
logging of architecture-specific limitations
- Add support for lowcore relocation as a debugging feature to catch
all null ptr dereferences in the kernel address space, improving
detection beyond the current implementation's limited write access
protection
- Clean up and rework CPU alternatives to allow for callbacks and early
patching for the lowcore relocation
* tag 's390-6.11-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (39 commits)
s390: Remove protvirt and kvm config guards for uv code
s390/boot: Add cmdline option to relocate lowcore
s390/kdump: Make kdump ready for lowcore relocation
s390/entry: Make system_call() ready for lowcore relocation
s390/entry: Make ret_from_fork() ready for lowcore relocation
s390/entry: Make __switch_to() ready for lowcore relocation
s390/entry: Make restart_int_handler() ready for lowcore relocation
s390/entry: Make mchk_int_handler() ready for lowcore relocation
s390/entry: Make int handlers ready for lowcore relocation
s390/entry: Make pgm_check_handler() ready for lowcore relocation
s390/entry: Add base register to CHECK_VMAP_STACK/CHECK_STACK macro
s390/entry: Add base register to SIEEXIT macro
s390/entry: Add base register to MBEAR macro
s390/entry: Make __sie64a() ready for lowcore relocation
s390/head64: Make startup code ready for lowcore relocation
s390: Add infrastructure to patch lowcore accesses
s390/atomic_ops: Disable flag outputs constraint for GCC versions below 14.2.0
s390/entry: Move SIE indicator flag to thread info
s390/nmi: Simplify ptregs setup
s390/alternatives: Remove alternative facility list
...
Printing information about the source and value during initialization and
reading of the counter for each cpu, while useful when debugging,
results in too verbose output.
Signed-off-by: Patryk Wlazlyn <patryk.wlazlyn@linux.intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
This leaves the stdout cleaner, having only counter data. It makes it
easier for programs to parse the output of turbostat, for example
selftests.
Signed-off-by: Patryk Wlazlyn <patryk.wlazlyn@linux.intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
- Remove some redundant Kconfig conditionals
- Fix string output in ptrace selftest
- Fix fast GUP crashes in some page-table configurations
- Remove obsolete linker option when building the vDSO
- Fix some sysreg field definitions for the GIC
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Will Deacon:
"The usual summary below, but the main fix is for the fast GUP lockless
page-table walk when we have a combination of compile-time and
run-time folding of the p4d and the pud respectively.
- Remove some redundant Kconfig conditionals
- Fix string output in ptrace selftest
- Fix fast GUP crashes in some page-table configurations
- Remove obsolete linker option when building the vDSO
- Fix some sysreg field definitions for the GIC"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: mm: Fix lockless walks with static and dynamic page-table folding
arm64/sysreg: Correct the values for GICv4.1
arm64/vdso: Remove --hash-style=sysv
kselftest: missing arg in ptrace.c
arm64/Kconfig: Remove redundant 'if HAVE_FUNCTION_GRAPH_TRACER'
arm64: remove redundant 'if HAVE_ARCH_KASAN' in Kconfig
There are cases where services need to remount (or change their
credentials files) when keys have expired, but it can be helpful
to have a dynamic trace point to make it easier to notify the
service to refresh the storage account key.
Here is sample output, one from mount with bad password, one
from a reconnect where the password has been changed or expired
and reconnect fails (requiring remount with new storage account key)
TASK-PID CPU# ||||| TIMESTAMP FUNCTION
| | | ||||| | |
mount.cifs-11362 [000] ..... 6000.241620: smb3_key_expired:
rc=-13 user=testpassu conn_id=0x2 server=localhost addr=127.0.0.1:445
kworker/4:0-8458 [004] ..... 6044.892283: smb3_key_expired:
rc=-13 user=testpassu conn_id=0x3 server=localhost addr=127.0.0.1:445
Reviewed-by: Shyam Prasad N <sprasad@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
assertion failure in the face of watch errors with -o exclusive
mappings in RBD marked for stable and some assorted CephFS fixes.
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Merge tag 'ceph-for-6.11-rc1' of https://github.com/ceph/ceph-client
Pull ceph updates from Ilya Dryomov:
"A small patchset to address bogus I/O errors and ultimately an
assertion failure in the face of watch errors with -o exclusive
mappings in RBD marked for stable and some assorted CephFS fixes"
* tag 'ceph-for-6.11-rc1' of https://github.com/ceph/ceph-client:
rbd: don't assume rbd_is_lock_owner() for exclusive mappings
rbd: don't assume RBD_LOCK_STATE_LOCKED for exclusive mappings
rbd: rename RBD_LOCK_STATE_RELEASING and releasing_wait
ceph: fix incorrect kmalloc size of pagevec mempool
ceph: periodically flush the cap releases
ceph: convert comma to semicolon in __ceph_dentry_dir_lease_touch()
ceph: use cap_wait_list only if debugfs is enabled
Add more dynamic tracepoints to help debug copy_file_range (copychunk)
and clone_range ("duplicate extents"). These are tracepoints for
entering the function and completing without error. For example:
"trace-cmd record -e smb3_copychunk_enter -e smb3_copychunk_done"
or
"trace-cmd record -e smb3_clone_enter -e smb3_clone_done"
Here is sample output:
TASK-PID CPU# ||||| TIMESTAMP FUNCTION
| | | ||||| | |
cp-5964 [005] ..... 2176.168977: smb3_clone_enter:
xid=17 sid=0xeb275be4 tid=0x7ffa7cdb source fid=0x1ed02e15
source offset=0x0 target fid=0x1ed02e15 target offset=0x0
len=0xa0000
cp-5964 [005] ..... 2176.170668: smb3_clone_done:
xid=17 sid=0xeb275be4 tid=0x7ffa7cdb source fid=0x1ed02e15
source offset=0x0 target fid=0x1ed02e15 target offset=0x0
len=0xa0000
Reviewed-by: Shyam Prasad N <sprasad@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
There are cases where debugging clone_range ("smb2_duplicate_extents"
function) and in the future copy_range ("smb2_copychunk_range") can
be helpful. Add dynamic trace points for any errors in clone, and
a followon patch will add them for copychunk.
"trace-cmd record -e smb3_clone_err"
Reviewed-by: Shyam Prasad N <sprasad@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
- Support STATX_DIOALIGN and FS_IOC_GETFSSYSFSPATH;
- Fix a race of LZ4 decompression due to recent refactoring;
- Another multi-page folio adaption in erofs_bread().
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Merge tag 'erofs-for-6.11-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs
Pull more erofs updates from Gao Xiang:
- Support STATX_DIOALIGN and FS_IOC_GETFSSYSFSPATH
- Fix a race of LZ4 decompression due to recent refactoring
- Another multi-page folio adaption in erofs_bread()
* tag 'erofs-for-6.11-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs:
erofs: convert comma to semicolon
erofs: support multi-page folios for erofs_bread()
erofs: add support for FS_IOC_GETFSSYSFSPATH
erofs: fix race in z_erofs_get_gbuf()
erofs: support STATX_DIOALIGN
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Merge tag 'pull-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull struct file leak fixes from Al Viro:
"a couple of leaks on failure exits missing fdput()"
* tag 'pull-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
lirc: rc_dev_get_from_fd(): fix file leak
powerpc: fix a file leak in kvm_vcpu_ioctl_enable_cap()
On arm64 we build compressed images, but "make install" by default will
install the old non-compressed one. To actually get the compressed
image install, you need to use "make zinstall", which is not the usual
way to install a kernel.
Which may not sound like much of an issue, but when you deal with
multiple architectures (and years of your fingers knowing the regular
"make install" incantation), this inconsistency is pretty annoying.
But as Will Deacon says:
"Sadly, bootloaders being as top quality as you might expect, I don't
think we're in a position to rely on decompressor support across the
board. Our Image.gz is literally just that -- we don't have a built-in
decompressor (nor do I think we want to rush into that again after the
fun we had on arm32) and the recent EFI zboot support solves that
problem for platforms using EFI.
Changing the default 'install' target terrifies me. There are bound to
be folks with embedded boards who've scripted this and we could really
ruin their day if we quietly give them a compressed kernel that their
bootloader doesn't know how to handle :/"
So make this conditional on a new "COMPRESSED_INSTALL" option.
Cc: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Will Deacon <will@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Random fixes for v6.11.
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Merge tag 'bitmap-6.11-rc1' of https://github.com:/norov/linux
Pull bitmap updates from Yury Norov:
"Random fixes"
* tag 'bitmap-6.11-rc1' of https://github.com:/norov/linux:
riscv: Remove unnecessary int cast in variable_fls()
radix tree test suite: put definition of bitmap_clear() into lib/bitmap.c
bitops: Add a comment explaining the double underscore macros
lib: bitmap: add missing MODULE_DESCRIPTION() macros
cpumask: introduce assign_cpu() macro
It's more natural to use ktime/ns instead of keeping around usec,
especially since we're comparing it against user provided timers,
so convert napi busy poll internal handling to ktime. It's also nicer
since the type (ktime_t vs unsigned long) now tells the unit of measure.
Keep everything as ktime, which we convert to/from micro seconds for
IORING_[UN]REGISTER_NAPI. The net/ busy polling works seems to work with
usec, however it's not real usec as shift by 10 is used to get it from
nsecs, see busy_loop_current_time(), so it's easy to get truncated nsec
back and we get back better precision.
Note, we can further improve it later by removing the truncation and
maybe convincing net/ to use ktime/ns instead.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/95e7ec8d095069a3ed5d40a4bc6f8b586698bc7e.1722003776.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Since the regulator can't be used without the USB controller also
tighten the dependency to match, as well as the default.
Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://patch.msgid.link/20240726-regulator-restrict-rzg2l-v1-1-640e508896e2@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
- Fix request without payloads cleanup (Leon)
- Use new protection information format (Francis)
- Improved debug message for lost pci link (Bart)
- Another apst quirk (Wang)
- Use appropriate sysfs api for printing chars (Markus)
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Merge tag 'nvme-6.11-2024-07-26' of git://git.infradead.org/nvme into block-6.11
Pull NVMe fixes from Keith:
"nvme fixes for Linux 6.11
- Fix request without payloads cleanup (Leon)
- Use new protection information format (Francis)
- Improved debug message for lost pci link (Bart)
- Another apst quirk (Wang)
- Use appropriate sysfs api for printing chars (Markus)"
* tag 'nvme-6.11-2024-07-26' of git://git.infradead.org/nvme:
nvme-pci: add missing condition check for existence of mapped data
nvme-core: choose PIF from QPIF if QPIFS supports and PIF is QTYPE
nvme-pci: Fix the instructions for disabling power management
nvme: remove redundant bdev local variable
nvme-fabrics: Use seq_putc() in __nvmf_concat_opt_tokens()
nvme/pci: Add APST quirk for Lenovo N60z laptop
The RISC-V architecture makes a real time counter CSR (via RDTIME
instruction) available for applications in U-mode but there is no
architected mechanism for an application to discover the frequency
the counter is running at. Some applications (e.g., DPDK) use the
time counter for basic performance analysis as well as fine grained
time-keeping.
Add support to the hwprobe system call to export the time CSR
frequency to code running in U-mode.
Signed-off-by: Yunhui Cui <cuiyunhui@bytedance.com>
Reviewed-by: Evan Green <evan@rivosinc.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Acked-by: Punit Agrawal <punit.agrawal@bytedance.com>
Link: https://lore.kernel.org/r/20240702033731.71955-2-cuiyunhui@bytedance.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
This harmonizes all virtual addressing modes which can now all map
(PGDIR_SIZE * PTRS_PER_PGD) / 4 of physical memory.
The RISCV implementation of KASAN requires that the boundary between
shallow mappings are aligned on an 8G boundary. In this case we need
VMALLOC_START to be 8G aligned. So although we only need to move the
start of the linear mapping down by 4GiB to allow 128GiB to be mapped,
we actually move it down by 8GiB (creating a 4GiB hole between the
linear mapping and KASAN shadow space) to maintain the alignment
requirement.
Signed-off-by: Stuart Menefy <stuart.menefy@codasip.com>
Reviewed-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Link: https://lore.kernel.org/r/20240630110550.1731929-1-stuart.menefy@codasip.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
This series adds support for ACPI PPTT via cacheinfo.
* b4-shazam-merge:
RISC-V: Select ACPI PPTT drivers
riscv: cacheinfo: initialize cacheinfo's level and type from ACPI PPTT
riscv: cacheinfo: remove the useless input parameter (node) of ci_leaf_init()
Link: https://lore.kernel.org/r/20240617131425.7526-1-cuiyunhui@bytedance.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Sia Jee Heng <jeeheng.sia@starfivetech.com> says:
The ACPI SPCR code has been used to enable console output for ARM64 and
X86. The same code can be reused for RISC-V. Furthermore, SPCR table is
mandated for headless system as outlined in the RISC-V BRS
Specification, chapter 6.
* b4-shazam-merge:
RISC-V: ACPI: Enable SPCR table for console output on RISC-V
Link: https://lore.kernel.org/r/20240502073751.102093-1-jeeheng.sia@starfivetech.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Add support for the stackleak feature. Whenever the kernel returns to user
space the kernel stack is filled with a poison value.
At the same time, disables the plugin in EFI stub code because EFI stub
is out of scope for the protection.
Tested on qemu and milkv duo:
/ # echo STACKLEAK_ERASING > /sys/kernel/debug/provoke-crash/DIRECT
[ 38.675575] lkdtm: Performing direct entry STACKLEAK_ERASING
[ 38.678448] lkdtm: stackleak stack usage:
[ 38.678448] high offset: 288 bytes
[ 38.678448] current: 496 bytes
[ 38.678448] lowest: 1328 bytes
[ 38.678448] tracked: 1328 bytes
[ 38.678448] untracked: 448 bytes
[ 38.678448] poisoned: 14312 bytes
[ 38.678448] low offset: 8 bytes
[ 38.689887] lkdtm: OK: the rest of the thread stack is properly erased
Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
Reviewed-by: Charlie Jenkins <charlie@rivosinc.com>
Link: https://lore.kernel.org/r/20240623235316.2010-1-jszhang@kernel.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Many CPUs implement return address branch prediction as a stack. The
RISCV architecture refers to this as a return address stack (RAS). If
this gets corrupted then the CPU will mispredict at least one but
potentally many function returns.
There are two issues with the current RISCV exception code:
- We are using the alternate link stack (x5/t0) for the indirect branch
which makes the hardware think this is a function return. This will
corrupt the RAS.
- We modify the return address of handle_exception to point to
ret_from_exception. This will also corrupt the RAS.
Testing the null system call latency before and after the patch:
Visionfive2 (StarFive JH7110 / U74)
baseline: 189.87 ns
patched: 176.76 ns
Lichee pi 4a (T-Head TH1520 / C910)
baseline: 666.58 ns
patched: 636.90 ns
Just over 7% on the U74 and just over 4% on the C910.
Signed-off-by: Anton Blanchard <antonb@tenstorrent.com>
Signed-off-by: Cyril Bur <cyrilbur@tenstorrent.com>
Tested-by: Jisheng Zhang <jszhang@kernel.org>
Reviewed-by: Jisheng Zhang <jszhang@kernel.org>
Link: https://lore.kernel.org/r/20240607061335.2197383-1-cyrilbur@tenstorrent.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Add header file for generic I3C flags to avoid hard code in dts file.
Signed-off-by: Carlos Song <carlos.song@nxp.com>
Reviewed-by: Frank Li <frank.li@nxp.com>
Acked-by: Jason Liu <jason.hui.liu@nxp.com>
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20240715225351.3237284-1-Frank.Li@nxp.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
This code has a typo so it returns positive EIO instead of negative -EIO. Fix
it!
Fixes: a7809cb368b9 ("i3c: master: svc: Improve DAA STOP handle code logic")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Link: https://lore.kernel.org/r/e017edfc-da64-496b-8516-958bec27cd9a@stanley.mountain
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Improve the visibility of i3c_bus_type to facilitate searching for
i3c devices attached to the i3c bus. Enable other drivers to use
bus_register_notifier to monitor i3c bus device events.
Signed-off-by: Bhoomik Gupta <bhoomik.gupta@nxp.com>
Link: https://lore.kernel.org/r/20240708053835.3003986-1-bhoomik.gupta@nxp.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Add support for runtime and system power management.
Handle clocks, resets, pads as part of suspend and resume.
Restore controller registers that could be lost due to suspend.
Finally add get and put calls appropriately in functions which
access controller : bus_init, do_daa, send_ccc_cmd, priv_xfers,
i2c_xfers, ibi and hot-join.
Signed-off-by: Aniket <aniketmaurya@google.com>
Link: https://lore.kernel.org/r/20240708062103.3296587-4-aniketmaurya@google.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Separate logic for setting intr/thld registers in a func.
Also modify enable function to take care of setting all fields in DEVICE_CTRL.
These functions can be reused later for power management.
Signed-off-by: Aniket <aniketmaurya@google.com>
Link: https://lore.kernel.org/r/20240708062103.3296587-3-aniketmaurya@google.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Add variables to store timing registers and other values.
These variables would be later used to restore registers
during resume without recomputation.
Signed-off-by: Aniket <aniketmaurya@google.com>
Link: https://lore.kernel.org/r/20240708062103.3296587-2-aniketmaurya@google.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
The REQUEST_PROC_DAA command behaves differently from other commands.
Sometimes the hardware can auto emit STOP, but in other conditions, it
cannot.
Improves the code logic to better handle these situations.
Hardware can auto emit STOP only when the following conditions are met:
- The previous I3C device correctly returns a PID and ACKs an I3C address.
- A NACK is received when emitting 7E to try to get the next I3C device's
PID.
In all other cases, a manual STOP emission is needed.
The code is changed to emit STOP when break the while loop and 'return 0'
only when the hardware can auto emit STOP.
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/r/20240702223107.403057-1-Frank.Li@nxp.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Move to "enabled" variant of clk_get API. It takes care
of enable and disable calls during the probe and remove.
Signed-off-by: Aniket <aniketmaurya@google.com>
Link: https://lore.kernel.org/r/20240628154603.326075-1-aniketmaurya@google.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
The dma.c: hci_dma_init() sets the CHUNK_SIZE field in the IBI_SETUP
register incorrectly if the calculated ibi_chunk_sz is not exactly
2^(n+2) bytes, where n is 0..6.
Fix this by rounding the chunk size up to nearest 2^(n+2) bytes.
Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Link: https://lore.kernel.org/r/20240628131559.502822-4-jarkko.nikula@linux.intel.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
