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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fpu updates from Borislav Petkov:
- Allow clearcpuid= to accept multiple bits (Arvind Sankar)
- Move clearcpuid= parameter handling earlier in the boot, away from
the FPU init code and to a generic location (Mike Hommey)
* tag 'x86_fpu_for_v5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/fpu: Handle FPU-related and clearcpuid command line arguments earlier
x86/fpu: Allow multiple bits in clearcpuid= parameter
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git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 updates from Will Deacon:
"There's quite a lot of code here, but much of it is due to the
addition of a new PMU driver as well as some arm64-specific selftests
which is an area where we've traditionally been lagging a bit.
In terms of exciting features, this includes support for the Memory
Tagging Extension which narrowly missed 5.9, hopefully allowing
userspace to run with use-after-free detection in production on CPUs
that support it. Work is ongoing to integrate the feature with KASAN
for 5.11.
Another change that I'm excited about (assuming they get the hardware
right) is preparing the ASID allocator for sharing the CPU page-table
with the SMMU. Those changes will also come in via Joerg with the
IOMMU pull.
We do stray outside of our usual directories in a few places, mostly
due to core changes required by MTE. Although much of this has been
Acked, there were a couple of places where we unfortunately didn't get
any review feedback.
Other than that, we ran into a handful of minor conflicts in -next,
but nothing that should post any issues.
Summary:
- Userspace support for the Memory Tagging Extension introduced by
Armv8.5. Kernel support (via KASAN) is likely to follow in 5.11.
- Selftests for MTE, Pointer Authentication and FPSIMD/SVE context
switching.
- Fix and subsequent rewrite of our Spectre mitigations, including
the addition of support for PR_SPEC_DISABLE_NOEXEC.
- Support for the Armv8.3 Pointer Authentication enhancements.
- Support for ASID pinning, which is required when sharing
page-tables with the SMMU.
- MM updates, including treating flush_tlb_fix_spurious_fault() as a
no-op.
- Perf/PMU driver updates, including addition of the ARM CMN PMU
driver and also support to handle CPU PMU IRQs as NMIs.
- Allow prefetchable PCI BARs to be exposed to userspace using normal
non-cacheable mappings.
- Implementation of ARCH_STACKWALK for unwinding.
- Improve reporting of unexpected kernel traps due to BPF JIT
failure.
- Improve robustness of user-visible HWCAP strings and their
corresponding numerical constants.
- Removal of TEXT_OFFSET.
- Removal of some unused functions, parameters and prototypes.
- Removal of MPIDR-based topology detection in favour of firmware
description.
- Cleanups to handling of SVE and FPSIMD register state in
preparation for potential future optimisation of handling across
syscalls.
- Cleanups to the SDEI driver in preparation for support in KVM.
- Miscellaneous cleanups and refactoring work"
* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (148 commits)
Revert "arm64: initialize per-cpu offsets earlier"
arm64: random: Remove no longer needed prototypes
arm64: initialize per-cpu offsets earlier
kselftest/arm64: Check mte tagged user address in kernel
kselftest/arm64: Verify KSM page merge for MTE pages
kselftest/arm64: Verify all different mmap MTE options
kselftest/arm64: Check forked child mte memory accessibility
kselftest/arm64: Verify mte tag inclusion via prctl
kselftest/arm64: Add utilities and a test to validate mte memory
perf: arm-cmn: Fix conversion specifiers for node type
perf: arm-cmn: Fix unsigned comparison to less than zero
arm64: dbm: Invalidate local TLB when setting TCR_EL1.HD
arm64: mm: Make flush_tlb_fix_spurious_fault() a no-op
arm64: Add support for PR_SPEC_DISABLE_NOEXEC prctl() option
arm64: Pull in task_stack_page() to Spectre-v4 mitigation code
KVM: arm64: Allow patching EL2 vectors even with KASLR is not enabled
arm64: Get rid of arm64_ssbd_state
KVM: arm64: Convert ARCH_WORKAROUND_2 to arm64_get_spectre_v4_state()
KVM: arm64: Get rid of kvm_arm_have_ssbd()
KVM: arm64: Simplify handling of ARCH_WORKAROUND_2
...
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git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu
Pull v5.10 RCU changes from Paul E. McKenney:
- Debugging for smp_call_function().
- Strict grace periods for KASAN. The point of this series is to find
RCU-usage bugs, so the corresponding new RCU_STRICT_GRACE_PERIOD
Kconfig option depends on both DEBUG_KERNEL and RCU_EXPERT, and is
further disabled by dfefault. Finally, the help text includes
a goodly list of scary caveats.
- New smp_call_function() torture test.
- Torture-test updates.
- Documentation updates.
- Miscellaneous fixes.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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There's now a new ReST file. Add it to the index.rst file.
Fixes: ce7a2f77f976 ("docs: gpio: Add GPIO Aggregator documentation")
Fixes: 2fd1abe99e5f ("Documentation: gpio: add documentation for gpio-mockup")
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Acked-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Link: https://lore.kernel.org/r/bad4d85c218d59c1bf69157df8e1012577680d88.1601616399.git.mchehab+huawei@kernel.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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All user of the pnp_find_card() compat wrapper are gone, so remove
the function as well.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Merge dma-contiguous.h into dma-map-ops.h, after removing the comment
describing the contiguous allocator into kernel/dma/contigous.c.
Signed-off-by: Christoph Hellwig <hch@lst.de>
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Rejecting non-native endian BTF overlapped with the addition
of support for it.
The rest were more simple overlapping changes, except the
renesas ravb binding update, which had to follow a file
move as well as a YAML conversion.
Signed-off-by: David S. Miller <davem@davemloft.net>
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* pm-cpuidle:
cpuidle: record state entry rejection statistics
cpuidle: psci: Allow PM domain to be initialized even if no OSI mode
firmware: psci: Extend psci_set_osi_mode() to allow reset to PC mode
ACPI: processor: Print more information when acpi_processor_evaluate_cst() fails
cpuidle: tegra: Correctly handle result of arm_cpuidle_simple_enter()
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Linux 5.9-rc7
* tag 'v5.9-rc7': (683 commits)
Linux 5.9-rc7
mm/thp: Split huge pmds/puds if they're pinned when fork()
mm: Do early cow for pinned pages during fork() for ptes
mm/fork: Pass new vma pointer into copy_page_range()
mm: Introduce mm_struct.has_pinned
mm: validate pmd after splitting
mm: don't rely on system state to detect hot-plug operations
mm: replace memmap_context by meminit_context
arch/x86/lib/usercopy_64.c: fix __copy_user_flushcache() cache writeback
lib/memregion.c: include memregion.h
lib/string.c: implement stpcpy
mm/migrate: correct thp migration stats
mm/gup: fix gup_fast with dynamic page table folding
mm: memcontrol: fix missing suffix of workingset_restore
mm, THP, swap: fix allocating cluster for swapfile by mistake
mm: slab: fix potential double free in ___cache_free
Documentation/llvm: Fix clang target examples
io_uring: ensure async buffered read-retry is setup properly
KVM: SVM: Add a dedicated INVD intercept routine
io_uring: don't unconditionally set plug->nowait = true
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Now that Zoran was re-added, we need to add its cardlist
to the admin guide.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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Try to make minimal changes to the document which already describes
access class 0 in a generic fashion (including IO initiatiors that
are not CPUs).
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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All slots in sysrq_key_table[] are either used, reserved or at least
commented with their intended use. This patch adds capital letter versions
available, which means adding 26 more entries.
For already existing SysRq operations the user presses Alt-SysRq-<key>, and
for the newly added ones Alt-Shift-SysRq-<key>.
Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://lore.kernel.org/r/20200818112825.6445-2-andrzej.p@collabora.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Update them according with the current support on drivers.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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There are two different variants for Hauppauge WinTV MiniCard:
[SMS1XXX_BOARD_HAUPPAUGE_TIGER_MINICARD] = {
.name = "Hauppauge WinTV MiniCard",
.type = SMS_NOVA_B0,
.fw[DEVICE_MODE_DVBT_BDA] = SMS_FW_DVBT_HCW_55XXX,
.default_mode = DEVICE_MODE_DVBT_BDA,
.lna_ctrl = 29,
.board_cfg.foreign_lna0_ctrl = 29,
.rf_switch = 17,
.board_cfg.rf_switch_uhf = 17,
},
[SMS1XXX_BOARD_HAUPPAUGE_TIGER_MINICARD_R2] = {
.name = "Hauppauge WinTV MiniCard Rev 2",
.type = SMS_NOVA_B0,
.fw[DEVICE_MODE_DVBT_BDA] = SMS_FW_DVBT_HCW_55XXX,
.default_mode = DEVICE_MODE_DVBT_BDA,
.lna_ctrl = -1,
},
As it can be seen, the RF part of the definitions are different.
So, better to use different names in order to distinguish
between them.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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There are several :c:type: definitions there, in order to
do cross-references with the driver's documentation.
Those are broken when docs are built with Sphinx 3.x, as
it would require :c:struct: instead.
For Sphinx < 3.x, the automarkup.py extension is able to do the
replacement already, and a future improvement on it should make
it also work with Sphinx 3.x.
So, get rid of the usage of the :c:type: macro there.
Reviewed-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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Fix a reStructuredText syntax error in the cpuidle PM admin-guide
documentation: the ``...'' quotation marks are parsed as partial ''...''
reStructuredText markup and break the output formatting.
This change them to "...".
Signed-off-by: Yoann Congal <yoann.congal@smile.fr>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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There's some documentation for gpio-mockup's debugfs interface in the
driver's source but it's not much. Add proper documentation for this
testing module.
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
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Initial driver for PMU event counting on the Arm CMN-600 interconnect.
CMN sports an obnoxiously complex distributed PMU system as part of
its debug and trace features, which can do all manner of things like
sampling, cross-triggering and generating CoreSight trace. This driver
covers the PMU functionality, plus the relevant aspects of watchpoints
for simply counting matching flits.
Tested-by: Tsahi Zidenberg <tsahee@amazon.com>
Tested-by: Tuan Phan <tuanphan@os.amperecomputing.com>
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>
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Add the file 'rkisp1.rst' that documents the rkisp1 driver.
Signed-off-by: Dafna Hirschfeld <dafna.hirschfeld@collabora.com>
Acked-by: Helen Koike <helen.koike@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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We forget to add the suffix to the workingset_restore string, so fix it.
And also update the documentation of cgroup-v2.rst.
Fixes: 170b04b7ae49 ("mm/workingset: prepare the workingset detection infrastructure for anon LRU")
Signed-off-by: Muchun Song <songmuchun@bytedance.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Shakeel Butt <shakeelb@google.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Tejun Heo <tj@kernel.org>
Cc: Zefan Li <lizefan@huawei.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Cc: Roman Gushchin <guro@fb.com>
Cc: Randy Dunlap <rdunlap@infradead.org>
Link: https://lkml.kernel.org/r/20200916100030.71698-1-songmuchun@bytedance.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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It was an interesting idea but nobody seems to be using it, it's buggy
at this point, and nfs4state.c is already complicated enough without it.
The new nfsd/clients/ code provides some of the same functionality, and
could probably do more if desired.
This feature has been deprecated since 9d60d93198c6 ("Deprecate nfsd
fault injection").
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
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These optionr were for Irix compatibility, probably for clustered XFS
clients in a heterogenous cluster which contained both Irix & Linux
machines, so that behavior would be consistent. That doesn't exist anymore
and it's no longer needed.
Signed-off-by: Pavel Reichl <preichl@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
[darrick: actually state when the sysctls go away]
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
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ikeep/noikeep was a workaround for old DMAPI code which is no longer
relevant.
attr2/noattr2 - is for controlling upgrade behaviour from fixed attribute
fork sizes in the inode (attr1) and dynamic attribute fork sizes (attr2).
mkfs has defaulted to setting attr2 since 2007, hence just about every
XFS filesystem out there in production right now uses attr2.
Signed-off-by: Pavel Reichl <preichl@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
[darrick: fix minor typos]
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
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https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux into dma-mapping-for-next
Pull in the latest 5.9 tree for the commit to revert the
V4L2_FLAG_MEMORY_NON_CONSISTENT uapi addition.
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The command-line parameters "dyndbg" and "async_probe" are not
parameters for kernel/module.c but instead they are for the
module that is being loaded. Try to make that distinction in the
help text.
OTOH, "module.sig_enforce" is handled as a parameter of kernel/module.c
so "module." is correct for it.
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Jessica Yu <jeyu@kernel.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: linux-doc@vger.kernel.org
Link: https://lore.kernel.org/r/67d40b6d-c073-a3bf-cbb6-6cad941cceeb@infradead.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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Following the structure used in sysctl/kernel.rst, this updates
abi.rst to use ReStructured Text more fully and updates the entries to
match current kernels:
* the list of files is now the table of contents;
* links are used to point to other documentation and other sections;
* all the existing entries are no longer present, so this removes
them;
* document vsyscall32.
Mentions of the kernel version are dropped. Since the document is
entirely rewritten, I've replaced the copyright statement.
Signed-off-by: Stephen Kitt <steve@sk2.org>
Link: https://lore.kernel.org/r/20200917072123.8847-1-steve@sk2.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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Remove use of "rdev" from blockdev/ramdisk.rst and update
admin-guide/kernel-parameters.txt.
"rdev" is considered antiquated, ancient, archaic, obsolete, deprecated
{choose any or all}.
"rdev" was removed from util-linux in 2010:
https://git.kernel.org/pub/scm/utils/util-linux/util-linux.git/commit/?id=a3e40c14651fccf18e7954f081e601389baefe3f
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Karel Zak <kzak@redhat.com>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: linux-block@vger.kernel.org
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Martin Mares <mj@ucw.cz>
Cc: linux-video@atrey.karlin.mff.cuni.cz
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: linux-doc@vger.kernel.org
Link: https://lore.kernel.org/r/20200918015640.8439-3-rdunlap@infradead.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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"rdev" is considered antiquated, ancient, archaic, obsolete, deprecated
{choose any or all}.
Remove use of "rdev" and "vidmode" (a symlink to rdev) in
admin-guide/README.rst and admin-guide/svga.rst.
"rdev" was removed from util-linux in 2010:
https://git.kernel.org/pub/scm/utils/util-linux/util-linux.git/commit/?id=a3e40c14651fccf18e7954f081e601389baefe3f
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Acked-by: Martin Mares <mj@ucw.cz>
Cc: Karel Zak <kzak@redhat.com>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: linux-block@vger.kernel.org
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Martin Mares <mj@ucw.cz>
Cc: linux-video@atrey.karlin.mff.cuni.cz
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: linux-doc@vger.kernel.org
Link: https://lore.kernel.org/r/20200918015640.8439-2-rdunlap@infradead.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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Fix typo, capitalize Korina proper noun.
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: linux-doc@vger.kernel.org
Link: https://lore.kernel.org/r/20200918054722.28713-1-rdunlap@infradead.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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Reformat "lapic=" to try to make it more understandable and similar
to the style that is mostly used in this file.
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Link: https://lore.kernel.org/r/20200918054739.2523-1-rdunlap@infradead.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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Fix punctuation and capitalization for the "io7" boot parameter.
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: linux-doc@vger.kernel.org
Link: https://lore.kernel.org/r/20200918054751.6538-1-rdunlap@infradead.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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Drop and extraneous word (if) in a sentence.
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: linux-doc@vger.kernel.org
Link: https://lore.kernel.org/r/20200918054803.6588-1-rdunlap@infradead.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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CMA only depends on MMU. It doesn't depend on arch too much. such as ARM,
ARM64, X86, MIPS etc. so We remove the dependency of cma about the
architecture in kernel-parameters.txt.
Signed-off-by: Tian Tao <tiantao6@hisilicon.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Link: https://lore.kernel.org/r/1600412758-60545-1-git-send-email-tiantao6@hisilicon.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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Since crash utility has been moved to github, the original URL is no
longer available. Let's update it accordingly.
Suggested-by: Dave Young <dyoung@redhat.com>
Signed-off-by: Lianbo Jiang <lijiang@redhat.com>
Link: https://lore.kernel.org/r/a088bff5-1174-25fa-ac26-6e46795f4085@redhat.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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For the "machtype" boot parameter,
fix word spacing, line wrap, and plural of "laptops".
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Jiaxun Yang <jiaxun.yang@flygoat.com>
Link: https://lore.kernel.org/r/c9059e35-188d-a749-1907-767b53479328@infradead.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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Add document entry for kvm_cma_resv_ratio kernel param which
is used to alter the KVM contiguous memory allocation percentage
for hash pagetable allocation used by hash mode PowerPC KVM guests.
Cc: Paul Mackerras <paulus@samba.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Satheesh Rajendran <sathnaga@linux.vnet.ibm.com>
Link: https://lore.kernel.org/r/20200921090220.14981-1-sathnaga@linux.vnet.ibm.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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CPUs may fail to enter the chosen idle state if there was a
pending interrupt, causing the cpuidle driver to return an error
value.
Record that and export it via sysfs along with the other idle state
statistics.
This could prove useful in understanding behavior of the governor
and the system during usecases that involve multiple CPUs.
Signed-off-by: Lina Iyer <ilina@codeaurora.org>
[ rjw: Changelog and documentation edits ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Two minor conflicts:
1) net/ipv4/route.c, adding a new local variable while
moving another local variable and removing it's
initial assignment.
2) drivers/net/dsa/microchip/ksz9477.c, overlapping changes.
One pretty prints the port mode differently, whilst another
changes the driver to try and obtain the port mode from
the port node rather than the switch node.
Signed-off-by: David S. Miller <davem@davemloft.net>
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Commit 27f5411a718c4 ("dm crypt: support using encrypted keys")
introduced support for encrypted keyring type.
Fix documentation in admin guide to mention this type.
Fixes: 27f5411a718c4 ("dm crypt: support using encrypted keys")
Signed-off-by: Milan Broz <gmazyland@gmail.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
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Commit 39d42fa96ba1 ("dm crypt: add flags to optionally bypass kcryptd
workqueues") introduced new dm-crypt 'no_read_workqueue' and
'no_write_workqueue' flags.
Add documentation to admin guide for them.
Fixes: 39d42fa96ba1 ("dm crypt: add flags to optionally bypass kcryptd workqueues")
Signed-off-by: Milan Broz <gmazyland@gmail.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
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Dictionaries are only used for SUBSYSTEM and DEVICE properties. The
current implementation stores the property names each time they are
used. This requires more space than otherwise necessary. Also,
because the dictionary entries are currently considered optional,
it cannot be relied upon that they are always available, even if the
writer wanted to store them. These issues will increase should new
dictionary properties be introduced.
Rather than storing the subsystem and device properties in the
dict ring, introduce a struct dev_printk_info with separate fields
to store only the property values. Embed this struct within the
struct printk_info to provide guaranteed availability.
Signed-off-by: John Ogness <john.ogness@linutronix.de>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Signed-off-by: Petr Mladek <pmladek@suse.com>
Link: https://lore.kernel.org/r/87mu1jl6ne.fsf@jogness.linutronix.de
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Following the structure used in sysctl/kernel.rst, this updates
abi.rst to use ReStructured Text more fully and updates the entries to
match current kernels:
* the list of files is now the table of contents;
* links are used to point to other documentation and other sections;
* all the existing entries are no longer present, so this removes
them;
* document vsyscall32.
Mentions of the kernel version are dropped. Since the document is
entirely rewritten, I've replaced the copyright statement.
Signed-off-by: Stephen Kitt <steve@sk2.org>
Link: https://lore.kernel.org/r/20200911190152.29730-1-steve@sk2.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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arm64 also supports disable hugeiomap,updated documentation.
Signed-off-by: Tian Tao <tiantao6@hisilicon.com>
Link: https://lore.kernel.org/r/1599740386-47210-1-git-send-email-tiantao6@hisilicon.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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The V4 filesystem format contains known weaknesses in the on-disk format
that make metadata verification diffiult. In addition, the format does
not support dates past 2038 and will not be upgraded to do so. We
should start the process of retiring the old format to close off attack
surfaces and to encourage users to migrate onto V5.
Therefore, make XFS V4 support a configurable option. For the first
period it will be default Y in case some distributors want to withdraw
support early; for the second period it will be default N so that anyone
who wishes to continue support can do so; and after that, support will
be removed from the kernel. Dates for these events have been added to
the upstream kernel.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Eric Sandeen <sandeen@redhat.com>
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Add support for extending the newest data block. For this, introduce
a new finalization state (desc_finalized) denoting a committed
descriptor that cannot be extended.
Until a record is finalized, a writer can reopen that record to
append new data. Reopening a record means transitioning from the
desc_committed state back to the desc_reserved state.
A writer can explicitly finalize a record if there is no intention
of extending it. Also, records are automatically finalized when a
new record is reserved. This relieves writers of needing to
explicitly finalize while also making such records available to
readers sooner. (Readers can only traverse finalized records.)
Four new memory barrier pairs are introduced. Two of them are
insignificant additions (data_realloc:A/desc_read:D and
data_realloc:A/data_push_tail:B) because they are alternate path
memory barriers that exactly match the purpose, pairing, and
context of the two existing memory barrier pairs they provide an
alternate path for. The other two new memory barrier pairs are
significant additions:
desc_reopen_last:A / _prb_commit:B - When reopening a descriptor,
ensure the state transitions back to desc_reserved before
fully trusting the descriptor data.
_prb_commit:B / desc_reserve:D - When committing a descriptor,
ensure the state transitions to desc_committed before checking
the head ID to see if the descriptor needs to be finalized.
Signed-off-by: John Ogness <john.ogness@linutronix.de>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Signed-off-by: Petr Mladek <pmladek@suse.com>
Link: https://lore.kernel.org/r/20200914123354.832-6-john.ogness@linutronix.de
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Rather than deriving the state by evaluating bits within the flags
area of the state variable, assign the states explicit values and
set those values in the flags area. Introduce macros to make it
simple to read and write state values for the state variable.
Although the functionality is preserved, the binary representation
for the states is changed.
Signed-off-by: John Ogness <john.ogness@linutronix.de>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Signed-off-by: Petr Mladek <pmladek@suse.com>
Link: https://lore.kernel.org/r/20200914123354.832-5-john.ogness@linutronix.de
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char / misc driver fixes from Greg KH:
"Here are a number of small driver fixes for 5.9-rc5
Included in here are:
- habanalabs driver fixes
- interconnect driver fixes
- soundwire driver fixes
- dyndbg fixes for reported issues, and then reverts to fix it all up
to a sane state.
- phy driver fixes
All of these have been in linux-next for a while with no reported
issues"
* tag 'char-misc-5.9-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
Revert "dyndbg: accept query terms like file=bar and module=foo"
Revert "dyndbg: fix problem parsing format="foo bar""
scripts/tags.sh: exclude tools directory from tags generation
video: fbdev: fix OOB read in vga_8planes_imageblit()
dyndbg: fix problem parsing format="foo bar"
dyndbg: refine export, rename to dynamic_debug_exec_queries()
dyndbg: give %3u width in pr-format, cosmetic only
interconnect: qcom: Fix small BW votes being truncated to zero
soundwire: fix double free of dangling pointer
interconnect: Show bandwidth for disabled paths as zero in debugfs
habanalabs: fix report of RAZWI initiator coordinates
habanalabs: prevent user buff overflow
phy: omap-usb2-phy: disable PHY charger detect
phy: qcom-qmp: Use correct values for ipq8074 PCIe Gen2 PHY init
soundwire: bus: fix typo in comment on INTSTAT registers
phy: qualcomm: fix return value check in qcom_ipq806x_usb_phy_probe()
phy: qualcomm: fix platform_no_drv_owner.cocci warnings
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This reverts commit 14775b04964264189caa4a0862eac05dab8c0502 as there
were still some parsing problems with it, and the follow-on patch for
it.
Let's revisit it later, just drop it for now.
Cc: <jbaron@akamai.com>
Cc: Jim Cromie <jim.cromie@gmail.com>
Reported-by: Naresh Kamboju <naresh.kamboju@linaro.org>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Fixes: 14775b049642 ("dyndbg: accept query terms like file=bar and module=foo")
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Commit
0c2a3913d6f5 ("x86/fpu: Parse clearcpuid= as early XSAVE argument")
changed clearcpuid parsing from __setup() to cmdline_find_option().
While the __setup() function would have been called for each clearcpuid=
parameter on the command line, cmdline_find_option() will only return
the last one, so the change effectively made it impossible to disable
more than one bit.
Allow a comma-separated list of bit numbers as the argument for
clearcpuid to allow multiple bits to be disabled again. Log the bits
being disabled for informational purposes.
Also fix the check on the return value of cmdline_find_option(). It
returns -1 when the option is not found, so testing as a boolean is
incorrect.
Fixes: 0c2a3913d6f5 ("x86/fpu: Parse clearcpuid= as early XSAVE argument")
Signed-off-by: Arvind Sankar <nivedita@alum.mit.edu>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20200907213919.2423441-1-nivedita@alum.mit.edu
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Linus Torvalds
Petr Mladek
Ingo Molnar
Mauro Carvalho Chehab
Christoph Hellwig
David S. Miller
Rafael J. Wysocki
Jonathan Cameron
Andrzej Pietrasiewicz
Yoann Congal
Bartosz Golaszewski
Robin Murphy
Dafna Hirschfeld
Muchun Song
J. Bruce Fields
Pavel Reichl
Randy Dunlap
Stephen Kitt
Tian Tao
lijiang
Satheesh Rajendran
Lina Iyer
Milan Broz
John Ogness
Darrick J. Wong
Greg Kroah-Hartman
Arvind Sankar