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git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi fixes from Mark Brown:
"A few last minute fixes for v6.11, they're all individually
unremarkable and only last minute due to when they came in"
* tag 'spi-fix-v6.11-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
spi: nxp-fspi: fix the KASAN report out-of-bounds bug
spi: geni-qcom: Fix incorrect free_irq() sequence
spi: geni-qcom: Undo runtime PM changes at driver exit time
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When CONFIG_TRACEPOINTS=y but CONFIG_PAGE_POOL=n, we end up with this
build failure that is reported by the 0-day bot:
ld: vmlinux.o: in function `mp_dmabuf_devmem_alloc_netmems':
>> (.text+0xc37286): undefined reference to `__tracepoint_page_pool_state_hold'
>> ld: (.text+0xc3729a): undefined reference to `__SCT__tp_func_page_pool_state_hold'
>> ld: vmlinux.o:(__jump_table+0x10c48): undefined reference to `__tracepoint_page_pool_state_hold'
>> ld: vmlinux.o:(.static_call_sites+0xb824): undefined reference to `__SCK__tp_func_page_pool_state_hold'
The root cause is that in this configuration, traces are enabled but the
page_pool specific trace_page_pool_state_hold is not registered.
There is no reason to build the dmabuf memory provider when
CONFIG_PAGE_POOL is not present, as it's really a provider to the
page_pool.
In fact the whole NET_DEVMEM is RX path-only at the moment, so we can
make the entire config dependent on the PAGE_POOL.
Note that this may need to be revisited after/while devmem TX is
added, as devmem TX likely does not need CONFIG_PAGE_POOL. For now this
build fix is sufficient.
Reported-by: kernel test robot <[email protected]>
Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/
Signed-off-by: Mina Almasry <[email protected]>
Reviewed-by: Simon Horman <[email protected]>
Tested-by: Simon Horman <[email protected]> # build-tested
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
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In the function soc_tplg_dai_config, the logical jump
of 'goto err' is redundant, so remove it.
Signed-off-by: Tang Bin <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Mark Brown <[email protected]>
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git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire
Pull soundwire fix from Vinod Koul:
- Revert of earlier fix sent for non-continuous port map programming
which caused regression on Intel platforms
* tag 'soundwire-6.11-fixes_2' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire:
soundwire: stream: Revert "soundwire: stream: fix programming slave ports for non-continous port maps"
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This file does not compile because <linux/mfd/sm5703.h> is missing.
In KConfig, it depends on MFD_SM5703.
Both MFD_SM5703 and the missing include rely on another patch that never
got merged. The last iteration related to this patch is [1].
So remove this dead-code and undo commit e8858ba89ca3 ("regulator:
sm5703-regulator: Add regulators support for SM5703 MFD")
[1]: https://lore.kernel.org/lkml/[email protected]/
Signed-off-by: Christophe JAILLET <[email protected]>
Link: https://patch.msgid.link/0f5da91a05e7343d290c88e3c583b674cf6219ac.1725910247.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Mark Brown <[email protected]>
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Pull drm fixes from Dave Airlie:
"Regular fixes pull, the amdgpu JPEG engine fixes are probably the
biggest, they look to block some register accessing, otherwise there
are just minor fixes and regression fixes all over.
nouveau had a regression report going back a few kernels that finally
got fixed, Not entirely happy with so many changes so late, but they
all seem quite benign apart from the jpeg one.
dma-buf/heaps:
- fix off by one in CMA heap fault handler
syncobj:
- fix syncobj leak in drm_syncobj_eventfd_ioctl
amdgpu:
- Avoid races between set_drr() functions and dc_state_destruct()
- Fix regerssion related to zpos
- Fix regression related to overlay cursor
- SMU 14.x updates
- JPEG fixes
- Silence an UBSAN warning
amdkfd:
- Fetch cacheline size from IP discovery
i915:
- Prevent a possible int overflow in wq offsets
xe:
- Remove a double include
- Fix null checks and UAF
- Fix access_ok check in user_fence_create
- Fix compat IS_DISPLAY_STEP() range
- OA fix
- Fixes in show_meminfo
nouveau:
- fix GP10x regression on boot
stm:
- add COMMON_CLK dep
rockchip:
- iommu api change
tegra:
- iommu api change"
* tag 'drm-fixes-2024-09-13' of https://gitlab.freedesktop.org/drm/kernel: (25 commits)
drm/xe/client: add missing bo locking in show_meminfo()
drm/xe/client: fix deadlock in show_meminfo()
drm/xe/oa: Enable Xe2+ PES disaggregation
drm/xe/display: fix compat IS_DISPLAY_STEP() range end
drm/xe: Fix access_ok check in user_fence_create
drm/xe: Fix possible UAF in guc_exec_queue_process_msg
drm/xe: Remove fence check from send_tlb_invalidation
drm/xe/gt: Remove double include
drm/amd/display: Add all planes on CRTC to state for overlay cursor
drm/amdgpu/atomfirmware: Silence UBSAN warning
drm/amd/amdgpu: apply command submission parser for JPEG v1
drm/amd/amdgpu: apply command submission parser for JPEG v2+
drm/amd/pm: fix the pp_dpm_pcie issue on smu v14.0.2/3
drm/amd/pm: update the features set on smu v14.0.2/3
drm/amd/display: Do not reset planes based on crtc zpos_changed
drm/amd/display: Avoid race between dcn35_set_drr() and dc_state_destruct()
drm/amd/display: Avoid race between dcn10_set_drr() and dc_state_destruct()
drm/amdkfd: Add cache line size info
drm/tegra: Use iommu_paging_domain_alloc()
drm/rockchip: Use iommu_paging_domain_alloc()
...
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_regulator_get() contains a lot of common code doing checks prior to the
regulator lookup and housekeeping work after the lookup. Almost all the
code could be shared with a OF-specific variant of _regulator_get().
Split out the common parts so that they can be reused. The OF-specific
version of _regulator_get() will be added in a subsequent patch.
No functional changes were made.
Signed-off-by: Chen-Yu Tsai <[email protected]>
Reviewed-by: Andy Shevchenko <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Mark Brown <[email protected]>
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Add calibration related kcontrol for speaker impedance calibration and
speaker leakage check for Chromebook.
Signed-off-by: Shenghao Ding <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Mark Brown <[email protected]>
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Merge series from Vijendar Mukunda <[email protected]>:
This patch series moves common Soundwire endpoint parsing and dai
creation logic to common placeholder from Intel generic SoundWire
machine driver code to make it generic. AMD SoundWire machine driver
code is refactored to use these functions for SoundWire endpoint
parsing and dai creation logic.
Link: https://github.com/thesofproject/linux/pull/5171
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The vdso.h header file, which is included at many places, includes
generated header files. This can easily lead to recursive header file
inclusions if the vdso code is changed.
Therefore move the vdso symbol code, which requires the generated
header files, to a separate header file, and include it at the two
locations which require it.
Signed-off-by: Heiko Carstens <[email protected]>
Signed-off-by: Jason A. Donenfeld <[email protected]>
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Implement the infrastructure required to allow alternatives in vdso code.
Signed-off-by: Heiko Carstens <[email protected]>
Signed-off-by: Jason A. Donenfeld <[email protected]>
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Provide find_section() helper function which can be used to find a
section by name, similar to other architectures.
Signed-off-by: Heiko Carstens <[email protected]>
Signed-off-by: Jason A. Donenfeld <[email protected]>
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Let test_facility() generate a branch instruction if the tested facility is
a constant, and where the result cannot be evaluated during compile
time. The branch instruction defaults to "false" and is patched to nop
(branch not taken) if the tested facility is available.
This avoids runtime checks and is similar to x86's static_cpu_has() and
arm64's alternative_has_cap_likely().
Signed-off-by: Heiko Carstens <[email protected]>
Signed-off-by: Jason A. Donenfeld <[email protected]>
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Patch all alternatives which depend on facilities from the decompressor.
There is no technical reason which enforces to split patching of such
alternatives to the decompressor and the kernel.
This simplifies alternative handling a bit, since one alternative type is
removed.
Signed-off-by: Heiko Carstens <[email protected]>
Signed-off-by: Jason A. Donenfeld <[email protected]>
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Disable compile time optimizations of test_facility() for the
decompressor. The decompressor should not contain any optimized code
depending on the architecture level set the kernel image is compiled
for to avoid unexpected operation exceptions.
Add a __DECOMPRESSOR check to test_facility() to enforce that
facilities are always checked during runtime for the decompressor.
Reviewed-by: Sven Schnelle <[email protected]>
Signed-off-by: Heiko Carstens <[email protected]>
Signed-off-by: Jason A. Donenfeld <[email protected]>
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Running vdso_test_correctness on s390x (aka s390 64 bit) emits a warning:
Warning: failed to find clock_gettime64 in vDSO
This is caused by the "#elif defined (__s390__)" check in vdso_config.h
which the defines VDSO_32BIT.
If __s390x__ is defined also __s390__ is defined. Therefore the correct
check must make sure that only __s390__ is defined.
Therefore add the missing !defined(__s390x__). Also use common
__s390x__ define instead of __s390X__.
Signed-off-by: Heiko Carstens <[email protected]>
Fixes: 693f5ca08ca0 ("kselftest: Extend vDSO selftest")
Signed-off-by: Jason A. Donenfeld <[email protected]>
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The vDSO self tests fail on s390x for a vDSO linked with the GNU linker
ld as follows:
# ./vdso_test_gettimeofday
Floating point exception (core dumped)
On s390x the ELF hash table entries are 64 bits instead of 32 bits in
size (see Glibc sysdeps/unix/sysv/linux/s390/bits/elfclass.h).
Fixes: 40723419f407 ("kselftest: Enable vDSO test on non x86 platforms")
Reported-by: Heiko Carstens <[email protected]>
Tested-by: Heiko Carstens <[email protected]>
Signed-off-by: Jens Remus <[email protected]>
Signed-off-by: Heiko Carstens <[email protected]>
Signed-off-by: Jason A. Donenfeld <[email protected]>
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Extend getrandom() vDSO implementation to VDSO64.
Tested on QEMU on both ppc64_defconfig and ppc64le_defconfig.
Results from a Power9 (PowerNV):
~ # ./vdso_test_getrandom bench-single
vdso: 25000000 times in 0.787943615 seconds
libc: 25000000 times in 14.101887252 seconds
syscall: 25000000 times in 14.047475082 seconds
Signed-off-by: Christophe Leroy <[email protected]>
Tested-by: Madhavan Srinivasan <[email protected]>
Acked-by: Michael Ellerman <[email protected]>
Signed-off-by: Jason A. Donenfeld <[email protected]>
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To be consistent with other VDSO functions, the function is called
__kernel_getrandom()
__arch_chacha20_blocks_nostack() fonction is implemented basically
with 32 bits operations. It performs 4 QUARTERROUND operations in
parallele. There are enough registers to avoid using the stack:
On input:
r3: output bytes
r4: 32-byte key input
r5: 8-byte counter input/output
r6: number of 64-byte blocks to write to output
During operation:
stack: pointer to counter (r5) and non-volatile registers (r14-131)
r0: counter of blocks (initialised with r6)
r4: Value '4' after key has been read, used for indexing
r5-r12: key
r14-r15: block counter
r16-r31: chacha state
At the end:
r0, r6-r12: Zeroised
r5, r14-r31: Restored
Performance on powerpc 885 (using kernel selftest):
~# ./vdso_test_getrandom bench-single
vdso: 25000000 times in 62.938002291 seconds
libc: 25000000 times in 535.581916866 seconds
syscall: 25000000 times in 531.525042806 seconds
Performance on powerpc 8321 (using kernel selftest):
~# ./vdso_test_getrandom bench-single
vdso: 25000000 times in 16.899318858 seconds
libc: 25000000 times in 131.050596522 seconds
syscall: 25000000 times in 129.794790389 seconds
This first patch adds support for VDSO32. As selftests cannot easily
be generated only for VDSO32, and because the following patch brings
support for VDSO64 anyway, this patch opts out all code in
__arch_chacha20_blocks_nostack() so that vdso_test_chacha will not
fail to compile and will not crash on PPC64/PPC64LE, allthough the
selftest itself will fail.
Signed-off-by: Christophe Leroy <[email protected]>
Acked-by: Michael Ellerman <[email protected]>
Signed-off-by: Jason A. Donenfeld <[email protected]>
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In order to avoid two much duplication when we add new VDSO
functionnalities in C like getrandom, refactor common CFLAGS.
Signed-off-by: Christophe Leroy <[email protected]>
Acked-by: Michael Ellerman <[email protected]>
Signed-off-by: Jason A. Donenfeld <[email protected]>
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Commit 08c18b63d965 ("powerpc/vdso32: Add missing _restgpr_31_x to fix
build failure") added _restgpr_31_x to the vdso for gettimeofday, but
the work on getrandom shows that we will need more of those functions.
Remove _restgpr_31_x and link in crtsavres.o so that we get all
save/restore functions when optimising the kernel for size.
Signed-off-by: Christophe Leroy <[email protected]>
Acked-by: Ard Biesheuvel <[email protected]>
Acked-by: Michael Ellerman <[email protected]>
Signed-off-by: Jason A. Donenfeld <[email protected]>
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Commit 9651fcedf7b9 ("mm: add MAP_DROPPABLE for designating always
lazily freeable mappings") only adds VM_DROPPABLE for 64 bits
architectures.
In order to also use the getrandom vDSO implementation on powerpc/32,
use VM_ARCH_1 for VM_DROPPABLE on powerpc/32. This is possible because
VM_ARCH_1 is used for VM_SAO on powerpc and VM_SAO is only for
powerpc/64. It is used in combination with PROT_SAO in some parts of
code that are restricted to CONFIG_PPC64 through #ifdefs, it is
therefore possible to define VM_SAO for CONFIG_PPC64 only.
Signed-off-by: Christophe Leroy <[email protected]>
Acked-by: Michael Ellerman <[email protected]>
Signed-off-by: Jason A. Donenfeld <[email protected]>
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When running in a non-root time namespace, the global VDSO data page
is replaced by a dedicated namespace data page and the global data
page is mapped next to it. Detailed explanations can be found at
commit 660fd04f9317 ("lib/vdso: Prepare for time namespace support").
When it happens, __kernel_get_syscall_map and __kernel_get_tbfreq
and __kernel_sync_dicache don't work anymore because they read 0
instead of the data they need.
To address that, clock_mode has to be read. When it is set to
VDSO_CLOCKMODE_TIMENS, it means it is a dedicated namespace data page
and the global data is located on the following page.
Add a macro called get_realdatapage which reads clock_mode and add
PAGE_SIZE to the pointer provided by get_datapage macro when
clock_mode is equal to VDSO_CLOCKMODE_TIMENS. Use this new macro
instead of get_datapage macro except for time functions as they handle
it internally.
Fixes: 74205b3fc2ef ("powerpc/vdso: Add support for time namespaces")
Reported-by: Jason A. Donenfeld <[email protected]>
Closes: https://lore.kernel.org/all/[email protected]/
Signed-off-by: Christophe Leroy <[email protected]>
Acked-by: Michael Ellerman <[email protected]>
Signed-off-by: Jason A. Donenfeld <[email protected]>
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It's not correct to use $(top_srcdir) for generated header files, for
builds that are done out of tree via O=, and $(objtree) isn't valid in
the selftests context. Instead, just obviate the need for these
generated header files by defining empty stubs in tools/include, which
is the same thing that's done for rwlock.h.
Reviewed-by: Adhemerval Zanella <[email protected]>
Signed-off-by: Jason A. Donenfeld <[email protected]>
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Hook up the generic vDSO implementation to the aarch64 vDSO data page.
The _vdso_rng_data required data is placed within the _vdso_data vvar
page, by using a offset larger than the vdso_data.
The vDSO function requires a ChaCha20 implementation that does not write
to the stack, and that can do an entire ChaCha20 permutation. The one
provided uses NEON on the permute operation, with a fallback to the
syscall for chips that do not support AdvSIMD.
This also passes the vdso_test_chacha test along with
vdso_test_getrandom. The vdso_test_getrandom bench-single result on
Neoverse-N1 shows:
vdso: 25000000 times in 0.783884250 seconds
libc: 25000000 times in 8.780275399 seconds
syscall: 25000000 times in 8.786581518 seconds
A small fixup to arch/arm64/include/asm/mman.h was required to avoid
pulling kernel code into the vDSO, similar to what's already done in
arch/arm64/include/asm/rwonce.h.
Signed-off-by: Adhemerval Zanella <[email protected]>
Reviewed-by: Ard Biesheuvel <[email protected]>
Acked-by: Will Deacon <[email protected]>
Signed-off-by: Jason A. Donenfeld <[email protected]>
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Currently alternative_has_cap_unlikely() can be used in VDSO code, but
alternative_has_cap_likely() cannot as it references alt_cb_patch_nops,
which is not available when linking the VDSO. This is unfortunate as it
would be useful to have alternative_has_cap_likely() available in VDSO
code.
The use of alt_cb_patch_nops was added in commit:
d926079f17bf8aa4 ("arm64: alternatives: add shared NOP callback")
... as removing duplicate NOPs within the kernel Image saved areasonable
amount of space.
Given the VDSO code will have nowhere near as many alternative branches
as the main kernel image, this isn't much of a concern, and a few extra
nops isn't a massive problem.
Change alternative_has_cap_likely() to only use alt_cb_patch_nops for
the main kernel image, and allow duplicate NOPs in VDSO code.
Signed-off-by: Mark Rutland <[email protected]>
Signed-off-by: Adhemerval Zanella <[email protected]>
Acked-by: Will Deacon <[email protected]>
Signed-off-by: Jason A. Donenfeld <[email protected]>
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The chacha vDSO selftest doesn't check the way the counter is handled by
__arch_chacha20_blocks_nostack(). It indirectly checks that the counter
is writen on exit and read back on new entry, but it doesn't check that
the format is correct. When implementing this function on powerpc, I
missed a case where the counter was writen and read in wrong byte order.
Also, the counter uses two words, but the tests with a zero counter and
uses a small amount of blocks, so at the end the upper part of the
counter is always 0, so it is not checked.
Add a verification of counter's content in addition to the verification
of the output.
Also add two tests where the counter crosses the u32 upper limit. The
first test verifies that the function properly writes back the upper
word, the second test verifies that the function properly reads back the
upper word.
Signed-off-by: Christophe Leroy <[email protected]>
Signed-off-by: Jason A. Donenfeld <[email protected]>
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Without -O2, the generated code for testing chacha function is awful.
GCC even implements rol32() as a function of 20 instructions instead of
just using the rotlwi instruction.
~# time ./vdso_test_chacha
TAP version 13
1..1
ok 1 chacha: PASS
real 0m 37.16s
user 0m 36.89s
sys 0m 0.26s
Several other selftests directory add -O2, and the kernel is also
always built with optimisation active. Do the same for vDSO selftests.
With this patch the time is reduced by approximately 15%.
~# time ./vdso_test_chacha
TAP version 13
1..1
ok 1 chacha: PASS
real 0m 32.09s
user 0m 31.86s
sys 0m 0.22s
Signed-off-by: Christophe Leroy <[email protected]>
Signed-off-by: Jason A. Donenfeld <[email protected]>
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Hook up the generic vDSO implementation to the LoongArch vDSO data page
by providing the required __arch_chacha20_blocks_nostack,
__arch_get_k_vdso_rng_data, and getrandom_syscall implementations. Also
wire up the selftests.
Signed-off-by: Xi Ruoyao <[email protected]>
Acked-by: Huacai Chen <[email protected]>
Signed-off-by: Jason A. Donenfeld <[email protected]>
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Without a prototype, we'll have to add a prototype for each architecture
implementing vDSO getrandom. As most architectures will likely have the
vDSO getrandom implemented in a near future, and we'd like to keep the
declarations compatible everywhere (to ease the libc implementor work),
we should really just have one copy of the prototype.
This also is what's already done inside of include/vdso/gettime.h for
those vDSO functions, so this continues that convention.
Suggested-by: Huacai Chen <[email protected]>
Signed-off-by: Xi Ruoyao <[email protected]>
Acked-by: Huacai Chen <[email protected]>
[Jason: rewrite docbook comment for prototype.]
Signed-off-by: Jason A. Donenfeld <[email protected]>
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Unlike the check for the standalone x86 test, the check for building the
vDSO getrandom and chacaha tests looks at the architecture for the host
rather than the architecture for the target when deciding if they should
be built. Since the chacha test includes some assembler code this means
that cross building with x86 as either the target or host is broken.
There's also some additional complications, where ARCH can legitimately
be either x86_64 or x86, but the source code we need to compile lives in
a directory path containing arch/x86. The standard SRCARCH variable
handles that. And actually, all these variables and proper substitutions
are already described in tools/scripts/Makefile.arch, so just include
that to handle it.
Similarly, ARCH=x86 can actually describe ARCH=x86_64,
just with CONFIG_64BIT, so we can't rely on ARCH for selecting
non-32-bit tests. For that, check against $(ARCH)$(CONFIG_X86_32). This
won't help for people manually running this inside the vDSO selftest
directory (which isn't really supported anyway and has problems on
various archs), but it should work for builds of the kselftests, where
the CONFIG_* variables are defined. On x86_64 machines,
$(ARCH)$(CONFIG_X86_32) will evaluate to x86. On arm64 machines, it will
evaluate to arm64. On 32-bit x86 machines, it will evaluate to x86y,
which won't match the filter list.
Reported-by: Mark Brown <[email protected]>
Reported-by: Christophe Leroy <[email protected]>
Signed-off-by: Jason A. Donenfeld <[email protected]>
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Depending on the architecture, building a 32-bit vDSO on a 64-bit kernel
is problematic when some system headers are included.
Minimise the amount of headers by moving needed items, such as
__{get,put}_unaligned_t, into dedicated common headers and in general
use more specific headers, similar to what was done in commit
8165b57bca21 ("linux/const.h: Extract common header for vDSO") and
commit 8c59ab839f52 ("lib/vdso: Enable common headers").
On some architectures this results in missing PAGE_SIZE, as was
described by commit 8b3843ae3634 ("vdso/datapage: Quick fix - use
asm/page-def.h for ARM64"), so define this if necessary, in the same way
as done prior by commit cffaefd15a8f ("vdso: Use CONFIG_PAGE_SHIFT in
vdso/datapage.h").
Removing linux/time64.h leads to missing 'struct timespec64' in
x86's asm/pvclock.h. Add a forward declaration of that struct in
that file.
Signed-off-by: Christophe Leroy <[email protected]>
Signed-off-by: Jason A. Donenfeld <[email protected]>
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With the current implementation, __cvdso_getrandom_data() calls
memset() on certain architectures, which is unexpected in the VDSO.
Rather than providing a memset(), simply rewrite opaque data
initialization to avoid memset().
Signed-off-by: Christophe Leroy <[email protected]>
Acked-by: Ard Biesheuvel <[email protected]>
Signed-off-by: Jason A. Donenfeld <[email protected]>
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Same as for the gettimeofday CVDSO implementation, add c-getrandom-y to
ease the inclusion of lib/vdso/getrandom.c in architectures' VDSO
builds.
Signed-off-by: Christophe Leroy <[email protected]>
Signed-off-by: Jason A. Donenfeld <[email protected]>
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_vdso_data is specific to x86 and __arch_get_k_vdso_data() is provided
so that all architectures can provide the requested pointer.
Do the same with _vdso_rng_data, provide __arch_get_k_vdso_rng_data()
and don't use x86 _vdso_rng_data directly.
Until now vdso/vsyscall.h was only included by time/vsyscall.c but now
it will also be included in char/random.c, leading to a duplicate
declaration of _vdso_data and _vdso_rng_data.
To fix this issue, move the declaration in a C file. vma.c looks like
the most appropriate candidate. We don't need to replace the definitions
in vsyscall.h by declarations as declarations are already in asm/vvar.h.
Signed-off-by: Christophe Leroy <[email protected]>
Signed-off-by: Jason A. Donenfeld <[email protected]>
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Performing SMP atomic operations on u64 fails on powerpc32:
CC drivers/char/random.o
In file included from <command-line>:
drivers/char/random.c: In function 'crng_reseed':
././include/linux/compiler_types.h:510:45: error: call to '__compiletime_assert_391' declared with attribute error: Need native word sized stores/loads for atomicity.
510 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ^
././include/linux/compiler_types.h:491:25: note: in definition of macro '__compiletime_assert'
491 | prefix ## suffix(); \
| ^~~~~~
././include/linux/compiler_types.h:510:9: note: in expansion of macro '_compiletime_assert'
510 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ^~~~~~~~~~~~~~~~~~~
././include/linux/compiler_types.h:513:9: note: in expansion of macro 'compiletime_assert'
513 | compiletime_assert(__native_word(t), \
| ^~~~~~~~~~~~~~~~~~
./arch/powerpc/include/asm/barrier.h:74:9: note: in expansion of macro 'compiletime_assert_atomic_type'
74 | compiletime_assert_atomic_type(*p); \
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
./include/asm-generic/barrier.h:172:55: note: in expansion of macro '__smp_store_release'
172 | #define smp_store_release(p, v) do { kcsan_release(); __smp_store_release(p, v); } while (0)
| ^~~~~~~~~~~~~~~~~~~
drivers/char/random.c:286:9: note: in expansion of macro 'smp_store_release'
286 | smp_store_release(&__arch_get_k_vdso_rng_data()->generation, next_gen + 1);
| ^~~~~~~~~~~~~~~~~
The kernel-side generation counter in the random driver is handled as an
unsigned long, not as a u64, in base_crng and struct crng.
But on the vDSO side, it needs to be an u64, not just an unsigned long,
in order to support a 32-bit vDSO atop a 64-bit kernel.
On kernel side, however, it is an unsigned long, hence a 32-bit value on
32-bit architectures, so just cast it to unsigned long for the
smp_store_release(). A side effect is that on big endian architectures
the store will be performed in the upper 32 bits. It is not an issue on
its own because the vDSO site doesn't mind the value, as it only checks
differences. Just make sure that the vDSO side checks the full 64 bits.
For that, the local current_generation has to be u64 as well.
Signed-off-by: Christophe Leroy <[email protected]>
Suggested-by: Thomas Gleixner <[email protected]>
Signed-off-by: Jason A. Donenfeld <[email protected]>
|
|
Linking to libsodium makes building this test annoying in cross
compilation environments and is just way too much. Since this is just a
basic correctness test, simply open code a simple, unoptimized, dumb
chacha, rather than linking to libsodium.
This also fixes a correctness issue on big endian systems. The kernel's
random.c doesn't bother doing a le32_to_cpu operation on the random
bytes that are passed as the key, and consequently neither does
vgetrandom-chacha.S. However, libsodium's chacha _does_ do this, since
it takes the key as an array of bytes. This meant that the test was
broken on big endian systems, which this commit rectifies.
Signed-off-by: Jason A. Donenfeld <[email protected]>
|
|
Having the prototype for __arch_chacha20_blocks_nostack in
arch/x86/include/asm/vdso/getrandom.h meant that the prototype and large
doc comment were cloned by every architecture, which has been causing
unnecessary churn. Instead move it into include/vdso/getrandom.h, where
it can be shared by all archs implementing it.
As a side bonus, this then lets us use that prototype in the
vdso_test_chacha self test, to ensure that it matches the source, and
indeed doing so turned up some inconsistencies, which are rectified
here.
Suggested-by: Christophe Leroy <[email protected]>
Signed-off-by: Jason A. Donenfeld <[email protected]>
|
|
After verifying that vDSO getrandom does work, which ensures that the
RNG is initialized, test to see if it also works inside of a time
namespace. This is important to test, because the vvar pages get
swizzled around there. If the arch code isn't careful, the RNG will
appear uninitialized inside of a time namespace.
Because broken code makes the RNG appear uninitialized, test that
everything works by issuing a call to vgetrandom from a fork in a time
namespace, and use ptrace to ensure that the actual syscall getrandom
doesn't get called. If it doesn't get called, then the test succeeds.
Signed-off-by: Jason A. Donenfeld <[email protected]>
|
|
for-6.12/block
Pull NVMe fixes from Keith:
"nvme fixes for Linux 6.12
- A syntax cleanup (Shen)
- Fix a Kconfig linking error (Arnd)
- New queue-depth quirk (Keith)"
* tag 'nvme-6.12-2024-09-13' of git://git.infradead.org/nvme:
nvme-pci: qdepth 1 quirk
nvme-tcp: fix link failure for TCP auth
nvme: Convert comma to semicolon
|
|
Another device has been reported to be unreliable if we have more than
one outstanding command. In this new case, data corruption may occur.
Since we have two devices now needing this quirky behavior, make a
generic quirk flag.
The same Apple quirk is clearly not "temporary", so update the comment
while moving it.
Link: https://lore.kernel.org/linux-nvme/[email protected]/
Reported-by: Robert Beckett <[email protected]>
Reviewed-by: Christoph Hellwig [email protected]>
Signed-off-by: Keith Busch <[email protected]>
|
|
devm_hwmon_device_unregister() has no in-tree user, and its implementation
is wrong since it does not pass the to-be-removed hardware monitoring
device as parameter. I do not envision a valid use for it; drivers needing
it should not have called devm_hwmon_device_register_with_info() in the
first place. Remove it.
Reported-by: Matthew Sanders <[email protected]>
Closes: https://lore.kernel.org/linux-hwmon/[email protected]/
Signed-off-by: Guenter Roeck <[email protected]>
|
|
Refactor Soundwire machine driver code by using common SoundWire
endpoint parsing helper functions.
Signed-off-by: Vijendar Mukunda <[email protected]>
Reviewed-by: Bard Liao <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Mark Brown <[email protected]>
|
|
Move SoundWire endpoint parsing helper functions to common place holder.
These functions will be used by other platform machine driver code.
Signed-off-by: Vijendar Mukunda <[email protected]>
Reviewed-by: Bard Liao <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Mark Brown <[email protected]>
|
|
Move Soundwire endpoint and dai link structures from Intel generic machine
driver code to common place holder(soc_sdw_utils.h). These structures will
be used in other platform SoundWire machine driver code.
Signed-off-by: Vijendar Mukunda <[email protected]>
Reviewed-by: Bard Liao <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Mark Brown <[email protected]>
|
|
Rename SoundWire parsing helper functions with 'asoc_sdw' tag
to make it generic.
Signed-off-by: Vijendar Mukunda <[email protected]>
Reviewed-by: Bard Liao <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Mark Brown <[email protected]>
|
|
Rename SoundWire endpoint and dai link structures with asoc tag to make it
generic.
Signed-off-by: Vijendar Mukunda <[email protected]>
Reviewed-by: Bard Liao <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Mark Brown <[email protected]>
|
|
Use the new cmpxchg_emu_u8() to emulate one-byte cmpxchg() on xtensa.
[ paulmck: Apply kernel test robot feedback. ]
[ paulmck: Drop two-byte support per Arnd Bergmann feedback. ]
[ Apply Geert Uytterhoeven feedback. ]
Signed-off-by: Paul E. McKenney <[email protected]>
Tested-by: Yujie Liu <[email protected]>
Cc: Andi Shyti <[email protected]>
Cc: Geert Uytterhoeven <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Cc: "Peter Zijlstra (Intel)" <[email protected]>
|
|
Use the new cmpxchg_emu_u8() to emulate one-byte cmpxchg() on sh.
[ paulmck: Drop two-byte support per Arnd Bergmann feedback. ]
[ paulmck: Apply feedback from Naresh Kamboju. ]
[ Apply Geert Uytterhoeven feedback. ]
Signed-off-by: Paul E. McKenney <[email protected]>
Cc: Andi Shyti <[email protected]>
Cc: Palmer Dabbelt <[email protected]>
Cc: Masami Hiramatsu <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Cc: <[email protected]>
Acked-by: John Paul Adrian Glaubitz <[email protected]>
|
|
Use the new cmpxchg_emu_u8() to emulate one-byte cmpxchg() on arc.
[ paulmck: Drop two-byte support per Arnd Bergmann feedback. ]
[ paulmck: Apply feedback from Naresh Kamboju. ]
[ paulmck: Apply kernel test robot feedback. ]
[ paulmck: Apply feedback from Vineet Gupta. ]
Signed-off-by: Paul E. McKenney <[email protected]>
Cc: Andi Shyti <[email protected]>
Cc: Andrzej Hajda <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Cc: Palmer Dabbelt <[email protected]>
Cc: <[email protected]>
Acked-by: Vineet Gupta <[email protected]>
|