forked from Minki/linux
33806e7cb8
42455 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Nathan Chancellor
|
33806e7cb8 |
x86/Kconfig: Drop check for -mabi=ms for CONFIG_EFI_STUB
A recent change in LLVM made CONFIG_EFI_STUB unselectable because it no longer pretends to support -mabi=ms, breaking the dependency in Kconfig. Lack of CONFIG_EFI_STUB can prevent kernels from booting via EFI in certain circumstances. This check was added by |
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Chang S. Bae
|
a401f45e38 |
x86/fpu: Exclude dynamic states from init_fpstate
== Background ==
The XSTATE init code initializes all enabled and supported components.
Then, the init states are saved in the init_fpstate buffer that is
statically allocated in about one page.
The AMX TILE_DATA state is large (8KB) but its init state is zero. And the
feature comes only with the compacted format with these established
dependencies: AMX->XFD->XSAVES. So this state is excludable from
init_fpstate.
== Problem ==
But the buffer is formatted to include that large state. Then, this can be
the cause of a noisy splat like the below.
This came from XRSTORS for the task with init_fpstate in its XSAVE buffer.
It is reproducible on AMX systems when the running kernel is built with
CONFIG_DEBUG_PAGEALLOC=y and CONFIG_DEBUG_PAGEALLOC_ENABLE_DEFAULT=y:
Bad FPU state detected at restore_fpregs_from_fpstate+0x57/0xd0, reinitializing FPU registers.
...
RIP: 0010:restore_fpregs_from_fpstate+0x57/0xd0
? restore_fpregs_from_fpstate+0x45/0xd0
switch_fpu_return+0x4e/0xe0
exit_to_user_mode_prepare+0x17b/0x1b0
syscall_exit_to_user_mode+0x29/0x40
do_syscall_64+0x67/0x80
? do_syscall_64+0x67/0x80
? exc_page_fault+0x86/0x180
entry_SYSCALL_64_after_hwframe+0x63/0xcd
== Solution ==
Adjust init_fpstate to exclude dynamic states. XRSTORS from init_fpstate
still initializes those states when their bits are set in the
requested-feature bitmap.
Fixes:
|
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Chang S. Bae
|
d3e021adac |
x86/fpu: Fix the init_fpstate size check with the actual size
The init_fpstate buffer is statically allocated. Thus, the sanity test was
established to check whether the pre-allocated buffer is enough for the
calculated size or not.
The currently measured size is not strictly relevant. Fix to validate the
calculated init_fpstate size with the pre-allocated area.
Also, replace the sanity check function with open code for clarity. The
abstraction itself and the function naming do not tend to represent simply
what it does.
Fixes:
|
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Chang S. Bae
|
c32d7cab57 |
x86/fpu: Configure init_fpstate attributes orderly
The init_fpstate setup code is spread out and out of order. The init image is recorded before its scoped features and the buffer size are determined. Determine the scope of init_fpstate components and its size before recording the init state. Also move the relevant code together. Signed-off-by: Chang S. Bae <chang.seok.bae@intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: neelnatu@google.com Link: https://lore.kernel.org/r/20220824191223.1248-2-chang.seok.bae@intel.com |
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Linus Torvalds
|
f1947d7c8a |
Random number generator fixes for Linux 6.1-rc1.
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Merge tag 'random-6.1-rc1-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/crng/random
Pull more random number generator updates from Jason Donenfeld:
"This time with some large scale treewide cleanups.
The intent of this pull is to clean up the way callers fetch random
integers. The current rules for doing this right are:
- If you want a secure or an insecure random u64, use get_random_u64()
- If you want a secure or an insecure random u32, use get_random_u32()
The old function prandom_u32() has been deprecated for a while
now and is just a wrapper around get_random_u32(). Same for
get_random_int().
- If you want a secure or an insecure random u16, use get_random_u16()
- If you want a secure or an insecure random u8, use get_random_u8()
- If you want secure or insecure random bytes, use get_random_bytes().
The old function prandom_bytes() has been deprecated for a while
now and has long been a wrapper around get_random_bytes()
- If you want a non-uniform random u32, u16, or u8 bounded by a
certain open interval maximum, use prandom_u32_max()
I say "non-uniform", because it doesn't do any rejection sampling
or divisions. Hence, it stays within the prandom_*() namespace, not
the get_random_*() namespace.
I'm currently investigating a "uniform" function for 6.2. We'll see
what comes of that.
By applying these rules uniformly, we get several benefits:
- By using prandom_u32_max() with an upper-bound that the compiler
can prove at compile-time is ≤65536 or ≤256, internally
get_random_u16() or get_random_u8() is used, which wastes fewer
batched random bytes, and hence has higher throughput.
- By using prandom_u32_max() instead of %, when the upper-bound is
not a constant, division is still avoided, because
prandom_u32_max() uses a faster multiplication-based trick instead.
- By using get_random_u16() or get_random_u8() in cases where the
return value is intended to indeed be a u16 or a u8, we waste fewer
batched random bytes, and hence have higher throughput.
This series was originally done by hand while I was on an airplane
without Internet. Later, Kees and I worked on retroactively figuring
out what could be done with Coccinelle and what had to be done
manually, and then we split things up based on that.
So while this touches a lot of files, the actual amount of code that's
hand fiddled is comfortably small"
* tag 'random-6.1-rc1-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/crng/random:
prandom: remove unused functions
treewide: use get_random_bytes() when possible
treewide: use get_random_u32() when possible
treewide: use get_random_{u8,u16}() when possible, part 2
treewide: use get_random_{u8,u16}() when possible, part 1
treewide: use prandom_u32_max() when possible, part 2
treewide: use prandom_u32_max() when possible, part 1
|
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Linus Torvalds
|
778ce723e9 |
xen: branch for v6.1-rc1
-----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQRTLbB6QfY48x44uB6AXGG7T9hjvgUCY0ZjFAAKCRCAXGG7T9hj vjEsAP4rFMnqc6AXy4Mpvv8cxBtEuQZbwEqgBrMJUvK1jZQrBQD/dOJK2GBCVcfD 2yaVlefFiJGTw5WUlbPeohUlTZ8pJwg= =xsHV -----END PGP SIGNATURE----- Merge tag 'for-linus-6.1-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip Pull xen updates from Juergen Gross: - Some minor typo fixes - A fix of the Xen pcifront driver for supporting the device model to run in a Linux stub domain - A cleanup of the pcifront driver - A series to enable grant-based virtio with Xen on x86 - A cleanup of Xen PV guests to distinguish between safe and faulting MSR accesses - Two fixes of the Xen gntdev driver - Two fixes of the new xen grant DMA driver * tag 'for-linus-6.1-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: xen: Kconfig: Fix spelling mistake "Maxmium" -> "Maximum" xen/pv: support selecting safe/unsafe msr accesses xen/pv: refactor msr access functions to support safe and unsafe accesses xen/pv: fix vendor checks for pmu emulation xen/pv: add fault recovery control to pmu msr accesses xen/virtio: enable grant based virtio on x86 xen/virtio: use dom0 as default backend for CONFIG_XEN_VIRTIO_FORCE_GRANT xen/virtio: restructure xen grant dma setup xen/pcifront: move xenstore config scanning into sub-function xen/gntdev: Accommodate VMA splitting xen/gntdev: Prevent leaking grants xen/virtio: Fix potential deadlock when accessing xen_grant_dma_devices xen/virtio: Fix n_pages calculation in xen_grant_dma_map(unmap)_page() xen/xenbus: Fix spelling mistake "hardward" -> "hardware" xen-pcifront: Handle missed Connected state |
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Linus Torvalds
|
676cb49573 |
- hfs and hfsplus kmap API modernization from Fabio Francesco
- Valentin Schneider makes crash-kexec work properly when invoked from an NMI-time panic. - ntfs bugfixes from Hawkins Jiawei - Jiebin Sun improves IPC msg scalability by replacing atomic_t's with percpu counters. - nilfs2 cleanups from Minghao Chi - lots of other single patches all over the tree! -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCY0Yf0gAKCRDdBJ7gKXxA joapAQDT1d1zu7T8yf9cQXkYnZVuBKCjxKE/IsYvqaq1a42MjQD/SeWZg0wV05B8 DhJPj9nkEp6R3Rj3Mssip+3vNuceAQM= =lUQY -----END PGP SIGNATURE----- Merge tag 'mm-nonmm-stable-2022-10-11' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull non-MM updates from Andrew Morton: - hfs and hfsplus kmap API modernization (Fabio Francesco) - make crash-kexec work properly when invoked from an NMI-time panic (Valentin Schneider) - ntfs bugfixes (Hawkins Jiawei) - improve IPC msg scalability by replacing atomic_t's with percpu counters (Jiebin Sun) - nilfs2 cleanups (Minghao Chi) - lots of other single patches all over the tree! * tag 'mm-nonmm-stable-2022-10-11' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (71 commits) include/linux/entry-common.h: remove has_signal comment of arch_do_signal_or_restart() prototype proc: test how it holds up with mapping'less process mailmap: update Frank Rowand email address ia64: mca: use strscpy() is more robust and safer init/Kconfig: fix unmet direct dependencies ia64: update config files nilfs2: replace WARN_ONs by nilfs_error for checkpoint acquisition failure fork: remove duplicate included header files init/main.c: remove unnecessary (void*) conversions proc: mark more files as permanent nilfs2: remove the unneeded result variable nilfs2: delete unnecessary checks before brelse() checkpatch: warn for non-standard fixes tag style usr/gen_init_cpio.c: remove unnecessary -1 values from int file ipc/msg: mitigate the lock contention with percpu counter percpu: add percpu_counter_add_local and percpu_counter_sub_local fs/ocfs2: fix repeated words in comments relay: use kvcalloc to alloc page array in relay_alloc_page_array proc: make config PROC_CHILDREN depend on PROC_FS fs: uninline inode_maybe_inc_iversion() ... |
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Linus Torvalds
|
f311d498be |
ARM:
* Fixes for single-stepping in the presence of an async
exception as well as the preservation of PSTATE.SS
* Better handling of AArch32 ID registers on AArch64-only
systems
* Fixes for the dirty-ring API, allowing it to work on
architectures with relaxed memory ordering
* Advertise the new kvmarm mailing list
* Various minor cleanups and spelling fixes
RISC-V:
* Improved instruction encoding infrastructure for
instructions not yet supported by binutils
* Svinval support for both KVM Host and KVM Guest
* Zihintpause support for KVM Guest
* Zicbom support for KVM Guest
* Record number of signal exits as a VCPU stat
* Use generic guest entry infrastructure
x86:
* Misc PMU fixes and cleanups.
* selftests: fixes for Hyper-V hypercall
* selftests: fix nx_huge_pages_test on TDP-disabled hosts
* selftests: cleanups for fix_hypercall_test
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull more kvm updates from Paolo Bonzini:
"The main batch of ARM + RISC-V changes, and a few fixes and cleanups
for x86 (PMU virtualization and selftests).
ARM:
- Fixes for single-stepping in the presence of an async exception as
well as the preservation of PSTATE.SS
- Better handling of AArch32 ID registers on AArch64-only systems
- Fixes for the dirty-ring API, allowing it to work on architectures
with relaxed memory ordering
- Advertise the new kvmarm mailing list
- Various minor cleanups and spelling fixes
RISC-V:
- Improved instruction encoding infrastructure for instructions not
yet supported by binutils
- Svinval support for both KVM Host and KVM Guest
- Zihintpause support for KVM Guest
- Zicbom support for KVM Guest
- Record number of signal exits as a VCPU stat
- Use generic guest entry infrastructure
x86:
- Misc PMU fixes and cleanups.
- selftests: fixes for Hyper-V hypercall
- selftests: fix nx_huge_pages_test on TDP-disabled hosts
- selftests: cleanups for fix_hypercall_test"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (57 commits)
riscv: select HAVE_POSIX_CPU_TIMERS_TASK_WORK
RISC-V: KVM: Use generic guest entry infrastructure
RISC-V: KVM: Record number of signal exits as a vCPU stat
RISC-V: KVM: add __init annotation to riscv_kvm_init()
RISC-V: KVM: Expose Zicbom to the guest
RISC-V: KVM: Provide UAPI for Zicbom block size
RISC-V: KVM: Make ISA ext mappings explicit
RISC-V: KVM: Allow Guest use Zihintpause extension
RISC-V: KVM: Allow Guest use Svinval extension
RISC-V: KVM: Use Svinval for local TLB maintenance when available
RISC-V: Probe Svinval extension form ISA string
RISC-V: KVM: Change the SBI specification version to v1.0
riscv: KVM: Apply insn-def to hlv encodings
riscv: KVM: Apply insn-def to hfence encodings
riscv: Introduce support for defining instructions
riscv: Add X register names to gpr-nums
KVM: arm64: Advertise new kvmarm mailing list
kvm: vmx: keep constant definition format consistent
kvm: mmu: fix typos in struct kvm_arch
KVM: selftests: Fix nx_huge_pages_test on TDP-disabled hosts
...
|
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Jason A. Donenfeld
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a251c17aa5 |
treewide: use get_random_u32() when possible
The prandom_u32() function has been a deprecated inline wrapper around get_random_u32() for several releases now, and compiles down to the exact same code. Replace the deprecated wrapper with a direct call to the real function. The same also applies to get_random_int(), which is just a wrapper around get_random_u32(). This was done as a basic find and replace. Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Kees Cook <keescook@chromium.org> Reviewed-by: Yury Norov <yury.norov@gmail.com> Reviewed-by: Jan Kara <jack@suse.cz> # for ext4 Acked-by: Toke Høiland-Jørgensen <toke@toke.dk> # for sch_cake Acked-by: Chuck Lever <chuck.lever@oracle.com> # for nfsd Acked-by: Jakub Kicinski <kuba@kernel.org> Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com> # for thunderbolt Acked-by: Darrick J. Wong <djwong@kernel.org> # for xfs Acked-by: Helge Deller <deller@gmx.de> # for parisc Acked-by: Heiko Carstens <hca@linux.ibm.com> # for s390 Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> |
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Jason A. Donenfeld
|
81895a65ec |
treewide: use prandom_u32_max() when possible, part 1
Rather than incurring a division or requesting too many random bytes for
the given range, use the prandom_u32_max() function, which only takes
the minimum required bytes from the RNG and avoids divisions. This was
done mechanically with this coccinelle script:
@basic@
expression E;
type T;
identifier get_random_u32 =~ "get_random_int|prandom_u32|get_random_u32";
typedef u64;
@@
(
- ((T)get_random_u32() % (E))
+ prandom_u32_max(E)
|
- ((T)get_random_u32() & ((E) - 1))
+ prandom_u32_max(E * XXX_MAKE_SURE_E_IS_POW2)
|
- ((u64)(E) * get_random_u32() >> 32)
+ prandom_u32_max(E)
|
- ((T)get_random_u32() & ~PAGE_MASK)
+ prandom_u32_max(PAGE_SIZE)
)
@multi_line@
identifier get_random_u32 =~ "get_random_int|prandom_u32|get_random_u32";
identifier RAND;
expression E;
@@
- RAND = get_random_u32();
... when != RAND
- RAND %= (E);
+ RAND = prandom_u32_max(E);
// Find a potential literal
@literal_mask@
expression LITERAL;
type T;
identifier get_random_u32 =~ "get_random_int|prandom_u32|get_random_u32";
position p;
@@
((T)get_random_u32()@p & (LITERAL))
// Add one to the literal.
@script:python add_one@
literal << literal_mask.LITERAL;
RESULT;
@@
value = None
if literal.startswith('0x'):
value = int(literal, 16)
elif literal[0] in '123456789':
value = int(literal, 10)
if value is None:
print("I don't know how to handle %s" % (literal))
cocci.include_match(False)
elif value == 2**32 - 1 or value == 2**31 - 1 or value == 2**24 - 1 or value == 2**16 - 1 or value == 2**8 - 1:
print("Skipping 0x%x for cleanup elsewhere" % (value))
cocci.include_match(False)
elif value & (value + 1) != 0:
print("Skipping 0x%x because it's not a power of two minus one" % (value))
cocci.include_match(False)
elif literal.startswith('0x'):
coccinelle.RESULT = cocci.make_expr("0x%x" % (value + 1))
else:
coccinelle.RESULT = cocci.make_expr("%d" % (value + 1))
// Replace the literal mask with the calculated result.
@plus_one@
expression literal_mask.LITERAL;
position literal_mask.p;
expression add_one.RESULT;
identifier FUNC;
@@
- (FUNC()@p & (LITERAL))
+ prandom_u32_max(RESULT)
@collapse_ret@
type T;
identifier VAR;
expression E;
@@
{
- T VAR;
- VAR = (E);
- return VAR;
+ return E;
}
@drop_var@
type T;
identifier VAR;
@@
{
- T VAR;
... when != VAR
}
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Yury Norov <yury.norov@gmail.com>
Reviewed-by: KP Singh <kpsingh@kernel.org>
Reviewed-by: Jan Kara <jack@suse.cz> # for ext4 and sbitmap
Reviewed-by: Christoph Böhmwalder <christoph.boehmwalder@linbit.com> # for drbd
Acked-by: Jakub Kicinski <kuba@kernel.org>
Acked-by: Heiko Carstens <hca@linux.ibm.com> # for s390
Acked-by: Ulf Hansson <ulf.hansson@linaro.org> # for mmc
Acked-by: Darrick J. Wong <djwong@kernel.org> # for xfs
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
|
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Juergen Gross
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3fac3734c4 |
xen/pv: support selecting safe/unsafe msr accesses
Instead of always doing the safe variants for reading and writing MSRs in Xen PV guests, make the behavior controllable via Kconfig option and a boot parameter. The default will be the current behavior, which is to always use the safe variant. Signed-off-by: Juergen Gross <jgross@suse.com> |
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Juergen Gross
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a1886b915e |
xen/pv: refactor msr access functions to support safe and unsafe accesses
Refactor and rename xen_read_msr_safe() and xen_write_msr_safe() to support both cases of MSR accesses, safe ones and potentially GP-fault generating ones. This will prepare to no longer swallow GPs silently in xen_read_msr() and xen_write_msr(). Signed-off-by: Juergen Gross <jgross@suse.com> Reviewed-by: Jan Beulich <jbeulich@suse.com> Signed-off-by: Juergen Gross <jgross@suse.com> |
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Juergen Gross
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f90d98bdd0 |
xen/pv: fix vendor checks for pmu emulation
The CPU vendor checks for pmu emulation are rather limited today, as the assumption seems to be that only Intel and AMD are existing and/or supported vendors. Fix that by handling Centaur and Zhaoxin CPUs the same way as Intel, and Hygon the same way as AMD. While at it fix the return type of is_intel_pmu_msr(). Suggested-by: Jan Beulich <jbeulich@suse.com> Signed-off-by: Juergen Gross <jgross@suse.com> Reviewed-by: Jan Beulich <jbeulich@suse.com> Signed-off-by: Juergen Gross <jgross@suse.com> |
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Juergen Gross
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8714f7bcd3 |
xen/pv: add fault recovery control to pmu msr accesses
Today pmu_msr_read() and pmu_msr_write() fall back to the safe variants of read/write MSR in case the MSR access isn't emulated via Xen. Allow the caller to select that faults should not be recovered from by passing NULL for the error pointer. Restructure the code to make it more readable. Signed-off-by: Juergen Gross <jgross@suse.com> Reviewed-by: Jan Beulich <jbeulich@suse.com> Signed-off-by: Juergen Gross <jgross@suse.com> |
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Linus Torvalds
|
27bc50fc90 |
- Yu Zhao's Multi-Gen LRU patches are here. They've been under test in
linux-next for a couple of months without, to my knowledge, any negative reports (or any positive ones, come to that). - Also the Maple Tree from Liam R. Howlett. An overlapping range-based tree for vmas. It it apparently slight more efficient in its own right, but is mainly targeted at enabling work to reduce mmap_lock contention. Liam has identified a number of other tree users in the kernel which could be beneficially onverted to mapletrees. Yu Zhao has identified a hard-to-hit but "easy to fix" lockdep splat (https://lkml.kernel.org/r/CAOUHufZabH85CeUN-MEMgL8gJGzJEWUrkiM58JkTbBhh-jew0Q@mail.gmail.com). This has yet to be addressed due to Liam's unfortunately timed vacation. He is now back and we'll get this fixed up. - Dmitry Vyukov introduces KMSAN: the Kernel Memory Sanitizer. It uses clang-generated instrumentation to detect used-unintialized bugs down to the single bit level. KMSAN keeps finding bugs. New ones, as well as the legacy ones. - Yang Shi adds a userspace mechanism (madvise) to induce a collapse of memory into THPs. - Zach O'Keefe has expanded Yang Shi's madvise(MADV_COLLAPSE) to support file/shmem-backed pages. - userfaultfd updates from Axel Rasmussen - zsmalloc cleanups from Alexey Romanov - cleanups from Miaohe Lin: vmscan, hugetlb_cgroup, hugetlb and memory-failure - Huang Ying adds enhancements to NUMA balancing memory tiering mode's page promotion, with a new way of detecting hot pages. - memcg updates from Shakeel Butt: charging optimizations and reduced memory consumption. - memcg cleanups from Kairui Song. - memcg fixes and cleanups from Johannes Weiner. - Vishal Moola provides more folio conversions - Zhang Yi removed ll_rw_block() :( - migration enhancements from Peter Xu - migration error-path bugfixes from Huang Ying - Aneesh Kumar added ability for a device driver to alter the memory tiering promotion paths. For optimizations by PMEM drivers, DRM drivers, etc. - vma merging improvements from Jakub Matěn. - NUMA hinting cleanups from David Hildenbrand. - xu xin added aditional userspace visibility into KSM merging activity. - THP & KSM code consolidation from Qi Zheng. - more folio work from Matthew Wilcox. - KASAN updates from Andrey Konovalov. - DAMON cleanups from Kaixu Xia. - DAMON work from SeongJae Park: fixes, cleanups. - hugetlb sysfs cleanups from Muchun Song. - Mike Kravetz fixes locking issues in hugetlbfs and in hugetlb core. -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCY0HaPgAKCRDdBJ7gKXxA joPjAQDZ5LlRCMWZ1oxLP2NOTp6nm63q9PWcGnmY50FjD/dNlwEAnx7OejCLWGWf bbTuk6U2+TKgJa4X7+pbbejeoqnt5QU= =xfWx -----END PGP SIGNATURE----- Merge tag 'mm-stable-2022-10-08' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull MM updates from Andrew Morton: - Yu Zhao's Multi-Gen LRU patches are here. They've been under test in linux-next for a couple of months without, to my knowledge, any negative reports (or any positive ones, come to that). - Also the Maple Tree from Liam Howlett. An overlapping range-based tree for vmas. It it apparently slightly more efficient in its own right, but is mainly targeted at enabling work to reduce mmap_lock contention. Liam has identified a number of other tree users in the kernel which could be beneficially onverted to mapletrees. Yu Zhao has identified a hard-to-hit but "easy to fix" lockdep splat at [1]. This has yet to be addressed due to Liam's unfortunately timed vacation. He is now back and we'll get this fixed up. - Dmitry Vyukov introduces KMSAN: the Kernel Memory Sanitizer. It uses clang-generated instrumentation to detect used-unintialized bugs down to the single bit level. KMSAN keeps finding bugs. New ones, as well as the legacy ones. - Yang Shi adds a userspace mechanism (madvise) to induce a collapse of memory into THPs. - Zach O'Keefe has expanded Yang Shi's madvise(MADV_COLLAPSE) to support file/shmem-backed pages. - userfaultfd updates from Axel Rasmussen - zsmalloc cleanups from Alexey Romanov - cleanups from Miaohe Lin: vmscan, hugetlb_cgroup, hugetlb and memory-failure - Huang Ying adds enhancements to NUMA balancing memory tiering mode's page promotion, with a new way of detecting hot pages. - memcg updates from Shakeel Butt: charging optimizations and reduced memory consumption. - memcg cleanups from Kairui Song. - memcg fixes and cleanups from Johannes Weiner. - Vishal Moola provides more folio conversions - Zhang Yi removed ll_rw_block() :( - migration enhancements from Peter Xu - migration error-path bugfixes from Huang Ying - Aneesh Kumar added ability for a device driver to alter the memory tiering promotion paths. For optimizations by PMEM drivers, DRM drivers, etc. - vma merging improvements from Jakub Matěn. - NUMA hinting cleanups from David Hildenbrand. - xu xin added aditional userspace visibility into KSM merging activity. - THP & KSM code consolidation from Qi Zheng. - more folio work from Matthew Wilcox. - KASAN updates from Andrey Konovalov. - DAMON cleanups from Kaixu Xia. - DAMON work from SeongJae Park: fixes, cleanups. - hugetlb sysfs cleanups from Muchun Song. - Mike Kravetz fixes locking issues in hugetlbfs and in hugetlb core. Link: https://lkml.kernel.org/r/CAOUHufZabH85CeUN-MEMgL8gJGzJEWUrkiM58JkTbBhh-jew0Q@mail.gmail.com [1] * tag 'mm-stable-2022-10-08' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (555 commits) hugetlb: allocate vma lock for all sharable vmas hugetlb: take hugetlb vma_lock when clearing vma_lock->vma pointer hugetlb: fix vma lock handling during split vma and range unmapping mglru: mm/vmscan.c: fix imprecise comments mm/mglru: don't sync disk for each aging cycle mm: memcontrol: drop dead CONFIG_MEMCG_SWAP config symbol mm: memcontrol: use do_memsw_account() in a few more places mm: memcontrol: deprecate swapaccounting=0 mode mm: memcontrol: don't allocate cgroup swap arrays when memcg is disabled mm/secretmem: remove reduntant return value mm/hugetlb: add available_huge_pages() func mm: remove unused inline functions from include/linux/mm_inline.h selftests/vm: add selftest for MADV_COLLAPSE of uffd-minor memory selftests/vm: add file/shmem MADV_COLLAPSE selftest for cleared pmd selftests/vm: add thp collapse shmem testing selftests/vm: add thp collapse file and tmpfs testing selftests/vm: modularize thp collapse memory operations selftests/vm: dedup THP helpers mm/khugepaged: add tracepoint to hpage_collapse_scan_file() mm/madvise: add file and shmem support to MADV_COLLAPSE ... |
||
|
Linus Torvalds
|
70442fc54e |
* Detect insecure W+X mappings and warn about them, including a
few bug fixes and relaxing the enforcement
* Do a long-overdue defconfig update and enabling W+X boot-time
detection
* Cleanup _PAGE_PSE handling (follow-up on an earlier bug)
* Rename a change_page_attr function
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Merge tag 'x86_mm_for_v6.1_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 mm updates from Dave Hansen:
"There are some small things here, plus one big one.
The big one detected and refused to create W+X kernel mappings. This
caused a bit of trouble and it is entirely disabled on 32-bit due to
known unfixable EFI issues. It also oopsed on some systemd eBPF use,
which kept some users from booting.
The eBPF issue is fixed, but those troubles were caught relatively
recently which made me nervous that there are more lurking. The final
commit in here retains the warnings, but doesn't actually refuse to
create W+X mappings.
Summary:
- Detect insecure W+X mappings and warn about them, including a few
bug fixes and relaxing the enforcement
- Do a long-overdue defconfig update and enabling W+X boot-time
detection
- Cleanup _PAGE_PSE handling (follow-up on an earlier bug)
- Rename a change_page_attr function"
* tag 'x86_mm_for_v6.1_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/mm: Ease W^X enforcement back to just a warning
x86/mm: Disable W^X detection and enforcement on 32-bit
x86/mm: Add prot_sethuge() helper to abstract out _PAGE_PSE handling
x86/mm/32: Fix W^X detection when page tables do not support NX
x86/defconfig: Enable CONFIG_DEBUG_WX=y
x86/defconfig: Refresh the defconfigs
x86/mm: Refuse W^X violations
x86/mm: Rename set_memory_present() to set_memory_p()
|
||
|
Linus Torvalds
|
0e0073eb1b |
hyperv-next for 6.1
-----BEGIN PGP SIGNATURE----- iQFHBAABCAAxFiEEIbPD0id6easf0xsudhRwX5BBoF4FAmNDMCsTHHdlaS5saXVA a2VybmVsLm9yZwAKCRB2FHBfkEGgXpmUB/4k6V0JlLc9kxClxK8KCzAasby5hnGz EPOXyFi6ff1CSiMdpV+oWh/ENQr8lSQYsj6esMNNRr4DLDJ9o6NGtdK05HzizCjs KwHlvjF0eRsr60zSIySdeAwPyEyupqcpkLSF6oGi53f6OQuC2LDQa/h7FMnSKgxD TFzkWbFAf1kl/nQTUenxTh+u16umaKsedrD9tQli1vIyhltQbu9Hw2gAV1vWxdKO Md6BRwaMMz5Lffs6eM2ULlyxNzK1Pk1LWdPeNVHHIeBVxI+YMememFCOA5BBXLXk QlVGIPtbyHtryK9DRFyhk9UWgdAZIBCDHxBOqXXySOGA+Kc7/DK5zCeB =f55l -----END PGP SIGNATURE----- Merge tag 'hyperv-next-signed-20221009' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux Pull hyperv updates from Wei Liu: - Remove unnecessary delay while probing for VMBus (Stanislav Kinsburskiy) - Optimize vmbus_on_event (Saurabh Sengar) - Fix a race in Hyper-V DRM driver (Saurabh Sengar) - Miscellaneous clean-up patches from various people * tag 'hyperv-next-signed-20221009' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux: x86/hyperv: Replace kmap() with kmap_local_page() drm/hyperv: Add ratelimit on error message hyperv: simplify and rename generate_guest_id Drivers: hv: vmbus: Split memcpy of flex-array scsi: storvsc: remove an extraneous "to" in a comment Drivers: hv: vmbus: Don't wait for the ACPI device upon initialization Drivers: hv: vmbus: Use PCI_VENDOR_ID_MICROSOFT for better discoverability Drivers: hv: vmbus: Fix kernel-doc drm/hyperv: Don't overwrite dirt_needed value set by host Drivers: hv: vmbus: Optimize vmbus_on_event |
||
|
Linus Torvalds
|
3604a7f568 |
This update includes the following changes:
API: - Feed untrusted RNGs into /dev/random. - Allow HWRNG sleeping to be more interruptible. - Create lib/utils module. - Setting private keys no longer required for akcipher. - Remove tcrypt mode=1000. - Reorganised Kconfig entries. Algorithms: - Load x86/sha512 based on CPU features. - Add AES-NI/AVX/x86_64/GFNI assembler implementation of aria cipher. Drivers: - Add HACE crypto driver aspeed. -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEn51F/lCuNhUwmDeSxycdCkmxi6cFAmM785cACgkQxycdCkmx i6dveBAAmGVYtrPmcGfA6CmzZ8ps9KdZxhjHjzLKwuqrOMulZvE2IYeUV4QtNqpQ 6NLY2+TkqL0XIbCXoByIk32lMYIlXBaJdMYdHHDTeo7E2wqZn/46SPSWeNKazyJx dkL8Oj62nqDc2s0LOi3vLvod+sENFQ69R+vkHOa0fZhX0UBsac3NIXo+74Y2A7bE 0+iQFKTWdNnoQzQ0j4q8WMiolKYh21iPZ9l5sjgMgichLCaE6PrITlRcaWrtPhey U1OmJtbTPsg+5X1r9KyLtoAXtBDONl66GQyne+p/ZYD8cMhxomjJaPlMhwWE/n4d d2KJKvoXoPPo4c+yNIS9hBav07ZriPl0q0jd2M1rd6oYTmFpaodTgIBfjvxO+wfV GoqDS8PEc42U1uwkuKC/cvfr6pB8WiybfXy+vSXBm/jUgIOO3y+eqsC8Jx9ZoQeG F+d34PYfJrJbmDRtcA6ZKdzN0OmKq7aCilx1kGKGPg0D+uq64FBo7zsT6XzTK8HL 2Za9AACPn87xLQwGrKDSBfyrlSSIJm2FaIIPayUXHEo7cyoiZwbTpXRRJ1mDR+v9 jzI+xPEXCthtjysuRmufNhTkiZUv3lZ8ORfQ0QFKR53tjZUm+dVQo0V/N/ZSXoSV SyRvXYO+ToXePAofNWl1LcO1grX/vxtFNedMkDLHXooRcnCaIYo= =rq2f -----END PGP SIGNATURE----- Merge tag 'v6.1-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 Pull crypto updates from Herbert Xu: "API: - Feed untrusted RNGs into /dev/random - Allow HWRNG sleeping to be more interruptible - Create lib/utils module - Setting private keys no longer required for akcipher - Remove tcrypt mode=1000 - Reorganised Kconfig entries Algorithms: - Load x86/sha512 based on CPU features - Add AES-NI/AVX/x86_64/GFNI assembler implementation of aria cipher Drivers: - Add HACE crypto driver aspeed" * tag 'v6.1-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (124 commits) crypto: aspeed - Remove redundant dev_err call crypto: scatterwalk - Remove unused inline function scatterwalk_aligned() crypto: aead - Remove unused inline functions from aead crypto: bcm - Simplify obtain the name for cipher crypto: marvell/octeontx - use sysfs_emit() to instead of scnprintf() hwrng: core - start hwrng kthread also for untrusted sources crypto: zip - remove the unneeded result variable crypto: qat - add limit to linked list parsing crypto: octeontx2 - Remove the unneeded result variable crypto: ccp - Remove the unneeded result variable crypto: aspeed - Fix check for platform_get_irq() errors crypto: virtio - fix memory-leak crypto: cavium - prevent integer overflow loading firmware crypto: marvell/octeontx - prevent integer overflows crypto: aspeed - fix build error when only CRYPTO_DEV_ASPEED is enabled crypto: hisilicon/qm - fix the qos value initialization crypto: sun4i-ss - use DEFINE_SHOW_ATTRIBUTE to simplify sun4i_ss_debugfs crypto: tcrypt - add async speed test for aria cipher crypto: aria-avx - add AES-NI/AVX/x86_64/GFNI assembler implementation of aria cipher crypto: aria - prepare generic module for optimized implementations ... |
||
|
Linus Torvalds
|
d4013bc4d4 |
bitmap patches for v6.1-rc1
From Phil Auld:
drivers/base: Fix unsigned comparison to -1 in CPUMAP_FILE_MAX_BYTES
From me:
cpumask: cleanup nr_cpu_ids vs nr_cpumask_bits mess
This series cleans that mess and adds new config FORCE_NR_CPUS that
allows to optimize cpumask subsystem if the number of CPUs is known
at compile-time.
From me:
lib: optimize find_bit() functions
Reworks find_bit() functions based on new FIND_{FIRST,NEXT}_BIT() macros.
From me:
lib/find: add find_nth_bit()
Adds find_nth_bit(), which is ~70 times faster than bitcounting with
for_each() loop:
for_each_set_bit(bit, mask, size)
if (n-- == 0)
return bit;
Also adds bitmap_weight_and() to let people replace this pattern:
tmp = bitmap_alloc(nbits);
bitmap_and(tmp, map1, map2, nbits);
weight = bitmap_weight(tmp, nbits);
bitmap_free(tmp);
with a single bitmap_weight_and() call.
From me:
cpumask: repair cpumask_check()
After switching cpumask to use nr_cpu_ids, cpumask_check() started
generating many false-positive warnings. This series fixes it.
From Valentin Schneider:
bitmap,cpumask: Add for_each_cpu_andnot() and for_each_cpu_andnot()
Extends the API with one more function and applies it in sched/core.
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Merge tag 'bitmap-6.1-rc1' of https://github.com/norov/linux
Pull bitmap updates from Yury Norov:
- Fix unsigned comparison to -1 in CPUMAP_FILE_MAX_BYTES (Phil Auld)
- cleanup nr_cpu_ids vs nr_cpumask_bits mess (me)
This series cleans that mess and adds new config FORCE_NR_CPUS that
allows to optimize cpumask subsystem if the number of CPUs is known
at compile-time.
- optimize find_bit() functions (me)
Reworks find_bit() functions based on new FIND_{FIRST,NEXT}_BIT()
macros.
- add find_nth_bit() (me)
Adds find_nth_bit(), which is ~70 times faster than bitcounting with
for_each() loop:
for_each_set_bit(bit, mask, size)
if (n-- == 0)
return bit;
Also adds bitmap_weight_and() to let people replace this pattern:
tmp = bitmap_alloc(nbits);
bitmap_and(tmp, map1, map2, nbits);
weight = bitmap_weight(tmp, nbits);
bitmap_free(tmp);
with a single bitmap_weight_and() call.
- repair cpumask_check() (me)
After switching cpumask to use nr_cpu_ids, cpumask_check() started
generating many false-positive warnings. This series fixes it.
- Add for_each_cpu_andnot() and for_each_cpu_andnot() (Valentin
Schneider)
Extends the API with one more function and applies it in sched/core.
* tag 'bitmap-6.1-rc1' of https://github.com/norov/linux: (28 commits)
sched/core: Merge cpumask_andnot()+for_each_cpu() into for_each_cpu_andnot()
lib/test_cpumask: Add for_each_cpu_and(not) tests
cpumask: Introduce for_each_cpu_andnot()
lib/find_bit: Introduce find_next_andnot_bit()
cpumask: fix checking valid cpu range
lib/bitmap: add tests for for_each() loops
lib/find: optimize for_each() macros
lib/bitmap: introduce for_each_set_bit_wrap() macro
lib/find_bit: add find_next{,_and}_bit_wrap
cpumask: switch for_each_cpu{,_not} to use for_each_bit()
net: fix cpu_max_bits_warn() usage in netif_attrmask_next{,_and}
cpumask: add cpumask_nth_{,and,andnot}
lib/bitmap: remove bitmap_ord_to_pos
lib/bitmap: add tests for find_nth_bit()
lib: add find_nth{,_and,_andnot}_bit()
lib/bitmap: add bitmap_weight_and()
lib/bitmap: don't call __bitmap_weight() in kernel code
tools: sync find_bit() implementation
lib/find_bit: optimize find_next_bit() functions
lib/find_bit: create find_first_zero_bit_le()
...
|
||
|
Linus Torvalds
|
cdf072acb5 |
Tracing updates for 6.1:
Major changes:
- Changed location of tracing repo from personal git repo to:
git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace.git
- Added Masami Hiramatsu as co-maintainer
- Updated MAINTAINERS file to separate out FTRACE as it is
more than just TRACING.
Minor changes:
- Added Mark Rutland as FTRACE reviewer
- Updated user_events to make it on its way to remove the BROKEN tag.
The changes should now be acceptable but will run it through
a cycle and hopefully we can remove the BROKEN tag next release.
- Added filtering to eprobes
- Added a delta time to the benchmark trace event
- Have the histogram and filter callbacks called via a switch
statement instead of indirect functions. This speeds it up to
avoid retpolines.
- Add a way to wake up ring buffer waiters waiting for the
ring buffer to fill up to its watermark.
- New ioctl() on the trace_pipe_raw file to wake up ring buffer
waiters.
- Wake up waiters when the ring buffer is disabled.
A reader may block when the ring buffer is disabled,
but if it was blocked when the ring buffer is disabled
it should then wake up.
Fixes:
- Allow splice to read partially read ring buffer pages
Fixes splice never moving forward.
- Fix inverted compare that made the "shortest" ring buffer
wait queue actually the longest.
- Fix a race in the ring buffer between resetting a page when
a writer goes to another page, and the reader.
- Fix ftrace accounting bug when function hooks are added at
boot up before the weak functions are set to "disabled".
- Fix bug that freed a user allocated snapshot buffer when
enabling a tracer.
- Fix possible recursive locks in osnoise tracer
- Fix recursive locking direct functions
- And other minor clean ups and fixes
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Merge tag 'trace-v6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull tracing updates from Steven Rostedt:
"Major changes:
- Changed location of tracing repo from personal git repo to:
git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace.git
- Added Masami Hiramatsu as co-maintainer
- Updated MAINTAINERS file to separate out FTRACE as it is more than
just TRACING.
Minor changes:
- Added Mark Rutland as FTRACE reviewer
- Updated user_events to make it on its way to remove the BROKEN tag.
The changes should now be acceptable but will run it through a
cycle and hopefully we can remove the BROKEN tag next release.
- Added filtering to eprobes
- Added a delta time to the benchmark trace event
- Have the histogram and filter callbacks called via a switch
statement instead of indirect functions. This speeds it up to avoid
retpolines.
- Add a way to wake up ring buffer waiters waiting for the ring
buffer to fill up to its watermark.
- New ioctl() on the trace_pipe_raw file to wake up ring buffer
waiters.
- Wake up waiters when the ring buffer is disabled. A reader may
block when the ring buffer is disabled, but if it was blocked when
the ring buffer is disabled it should then wake up.
Fixes:
- Allow splice to read partially read ring buffer pages. This fixes
splice never moving forward.
- Fix inverted compare that made the "shortest" ring buffer wait
queue actually the longest.
- Fix a race in the ring buffer between resetting a page when a
writer goes to another page, and the reader.
- Fix ftrace accounting bug when function hooks are added at boot up
before the weak functions are set to "disabled".
- Fix bug that freed a user allocated snapshot buffer when enabling a
tracer.
- Fix possible recursive locks in osnoise tracer
- Fix recursive locking direct functions
- Other minor clean ups and fixes"
* tag 'trace-v6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: (44 commits)
ftrace: Create separate entry in MAINTAINERS for function hooks
tracing: Update MAINTAINERS to reflect new tracing git repo
tracing: Do not free snapshot if tracer is on cmdline
ftrace: Still disable enabled records marked as disabled
tracing/user_events: Move pages/locks into groups to prepare for namespaces
tracing: Add Masami Hiramatsu as co-maintainer
tracing: Remove unused variable 'dups'
MAINTAINERS: add myself as a tracing reviewer
ring-buffer: Fix race between reset page and reading page
tracing/user_events: Update ABI documentation to align to bits vs bytes
tracing/user_events: Use bits vs bytes for enabled status page data
tracing/user_events: Use refcount instead of atomic for ref tracking
tracing/user_events: Ensure user provided strings are safely formatted
tracing/user_events: Use WRITE instead of READ for io vector import
tracing/user_events: Use NULL for strstr checks
tracing: Fix spelling mistake "preapre" -> "prepare"
tracing: Wake up waiters when tracing is disabled
tracing: Add ioctl() to force ring buffer waiters to wake up
tracing: Wake up ring buffer waiters on closing of the file
ring-buffer: Add ring_buffer_wake_waiters()
...
|
||
|
Linus Torvalds
|
8afc66e8d4 |
Kbuild updates for v6.1
- Remove potentially incomplete targets when Kbuid is interrupted by
SIGINT etc. in case GNU Make may miss to do that when stderr is piped
to another program.
- Rewrite the single target build so it works more correctly.
- Fix rpm-pkg builds with V=1.
- List top-level subdirectories in ./Kbuild.
- Ignore auto-generated __kstrtab_* and __kstrtabns_* symbols in kallsyms.
- Avoid two different modules in lib/zstd/ having shared code, which
potentially causes building the common code as build-in and modular
back-and-forth.
- Unify two modpost invocations to optimize the build process.
- Remove head-y syntax in favor of linker scripts for placing particular
sections in the head of vmlinux.
- Bump the minimal GNU Make version to 3.82.
- Clean up misc Makefiles and scripts.
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Merge tag 'kbuild-v6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild updates from Masahiro Yamada:
- Remove potentially incomplete targets when Kbuid is interrupted by
SIGINT etc in case GNU Make may miss to do that when stderr is piped
to another program.
- Rewrite the single target build so it works more correctly.
- Fix rpm-pkg builds with V=1.
- List top-level subdirectories in ./Kbuild.
- Ignore auto-generated __kstrtab_* and __kstrtabns_* symbols in
kallsyms.
- Avoid two different modules in lib/zstd/ having shared code, which
potentially causes building the common code as build-in and modular
back-and-forth.
- Unify two modpost invocations to optimize the build process.
- Remove head-y syntax in favor of linker scripts for placing
particular sections in the head of vmlinux.
- Bump the minimal GNU Make version to 3.82.
- Clean up misc Makefiles and scripts.
* tag 'kbuild-v6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (41 commits)
docs: bump minimal GNU Make version to 3.82
ia64: simplify esi object addition in Makefile
Revert "kbuild: Check if linker supports the -X option"
kbuild: rebuild .vmlinux.export.o when its prerequisite is updated
kbuild: move modules.builtin(.modinfo) rules to Makefile.vmlinux_o
zstd: Fixing mixed module-builtin objects
kallsyms: ignore __kstrtab_* and __kstrtabns_* symbols
kallsyms: take the input file instead of reading stdin
kallsyms: drop duplicated ignore patterns from kallsyms.c
kbuild: reuse mksysmap output for kallsyms
mksysmap: update comment about __crc_*
kbuild: remove head-y syntax
kbuild: use obj-y instead extra-y for objects placed at the head
kbuild: hide error checker logs for V=1 builds
kbuild: re-run modpost when it is updated
kbuild: unify two modpost invocations
kbuild: move vmlinux.o rule to the top Makefile
kbuild: move .vmlinux.objs rule to Makefile.modpost
kbuild: list sub-directories in ./Kbuild
Makefile.compiler: replace cc-ifversion with compiler-specific macros
...
|
||
|
Linus Torvalds
|
3e71f0167b |
Locking changes for v6.1:
- Disable preemption in rwsem_write_trylock()'s attempt to
take the rwsem, to avoid RT tasks hogging the CPU, which
managed to preempt this function after the owner has
been cleared but before a new owner is set. Also add
debug checks to enforce this.
- Add __lockfunc to more slow path functions and add
__sched to semaphore functions.
- Mark spinlock APIs noinline when the respective CONFIG_INLINE_SPIN_*
toggles are disabled, to reduce LTO text size.
- Print more debug information when lockdep gets confused
in look_up_lock_class().
- Improve header file abuse checks.
- Misc cleanups
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'locking-core-2022-10-07' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking updates from Ingo Molnar:
- Disable preemption in rwsem_write_trylock()'s attempt to take the
rwsem, to avoid RT tasks hogging the CPU, which managed to preempt
this function after the owner has been cleared but before a new owner
is set. Also add debug checks to enforce this.
- Add __lockfunc to more slow path functions and add __sched to
semaphore functions.
- Mark spinlock APIs noinline when the respective CONFIG_INLINE_SPIN_*
toggles are disabled, to reduce LTO text size.
- Print more debug information when lockdep gets confused in
look_up_lock_class().
- Improve header file abuse checks.
- Misc cleanups
* tag 'locking-core-2022-10-07' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
locking/lockdep: Print more debug information - report name and key when look_up_lock_class() got confused
locking: Add __sched to semaphore functions
locking/rwsem: Disable preemption while trying for rwsem lock
locking: Detect includes rwlock.h outside of spinlock.h
locking: Add __lockfunc to slow path functions
locking/spinlocks: Mark spinlocks noinline when inline spinlocks are disabled
selftests: futex: Fix 'the the' typo in comment
|
||
|
Linus Torvalds
|
3871d93b82 |
Perf events updates for v6.1:
- PMU driver updates:
- Add AMD Last Branch Record Extension Version 2 (LbrExtV2)
feature support for Zen 4 processors.
- Extend the perf ABI to provide branch speculation information,
if available, and use this on CPUs that have it (eg. LbrExtV2).
- Improve Intel PEBS TSC timestamp handling & integration.
- Add Intel Raptor Lake S CPU support.
- Add 'perf mem' and 'perf c2c' memory profiling support on
AMD CPUs by utilizing IBS tagged load/store samples.
- Clean up & optimize various x86 PMU details.
- HW breakpoints:
- Big rework to optimize the code for systems with hundreds of CPUs and
thousands of breakpoints:
- Replace the nr_bp_mutex global mutex with the bp_cpuinfo_sem
per-CPU rwsem that is read-locked during most of the key operations.
- Improve the O(#cpus * #tasks) logic in toggle_bp_slot()
and fetch_bp_busy_slots().
- Apply micro-optimizations & cleanups.
- Misc cleanups & enhancements.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'perf-core-2022-10-07' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf events updates from Ingo Molnar:
"PMU driver updates:
- Add AMD Last Branch Record Extension Version 2 (LbrExtV2) feature
support for Zen 4 processors.
- Extend the perf ABI to provide branch speculation information, if
available, and use this on CPUs that have it (eg. LbrExtV2).
- Improve Intel PEBS TSC timestamp handling & integration.
- Add Intel Raptor Lake S CPU support.
- Add 'perf mem' and 'perf c2c' memory profiling support on AMD CPUs
by utilizing IBS tagged load/store samples.
- Clean up & optimize various x86 PMU details.
HW breakpoints:
- Big rework to optimize the code for systems with hundreds of CPUs
and thousands of breakpoints:
- Replace the nr_bp_mutex global mutex with the bp_cpuinfo_sem
per-CPU rwsem that is read-locked during most of the key
operations.
- Improve the O(#cpus * #tasks) logic in toggle_bp_slot() and
fetch_bp_busy_slots().
- Apply micro-optimizations & cleanups.
- Misc cleanups & enhancements"
* tag 'perf-core-2022-10-07' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (75 commits)
perf/hw_breakpoint: Annotate tsk->perf_event_mutex vs ctx->mutex
perf: Fix pmu_filter_match()
perf: Fix lockdep_assert_event_ctx()
perf/x86/amd/lbr: Adjust LBR regardless of filtering
perf/x86/utils: Fix uninitialized var in get_branch_type()
perf/uapi: Define PERF_MEM_SNOOPX_PEER in kernel header file
perf/x86/amd: Support PERF_SAMPLE_PHY_ADDR
perf/x86/amd: Support PERF_SAMPLE_ADDR
perf/x86/amd: Support PERF_SAMPLE_{WEIGHT|WEIGHT_STRUCT}
perf/x86/amd: Support PERF_SAMPLE_DATA_SRC
perf/x86/amd: Add IBS OP_DATA2 DataSrc bit definitions
perf/mem: Introduce PERF_MEM_LVLNUM_{EXTN_MEM|IO}
perf/x86/uncore: Add new Raptor Lake S support
perf/x86/cstate: Add new Raptor Lake S support
perf/x86/msr: Add new Raptor Lake S support
perf/x86: Add new Raptor Lake S support
bpf: Check flags for branch stack in bpf_read_branch_records helper
perf, hw_breakpoint: Fix use-after-free if perf_event_open() fails
perf: Use sample_flags for raw_data
perf: Use sample_flags for addr
...
|
||
|
Juergen Gross
|
61367688f1 |
xen/virtio: enable grant based virtio on x86
Use an x86-specific virtio_check_mem_acc_cb() for Xen in order to setup the correct DMA ops. Signed-off-by: Juergen Gross <jgross@suse.com> Reviewed-by: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com> # common code Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> Signed-off-by: Juergen Gross <jgross@suse.com> |
||
|
Linus Torvalds
|
ef688f8b8c |
The first batch of KVM patches, mostly covering x86, which I
am sending out early due to me travelling next week. There is a lone mm patch for which Andrew gave an informal ack at https://lore.kernel.org/linux-mm/20220817102500.440c6d0a3fce296fdf91bea6@linux-foundation.org. I will send the bulk of ARM work, as well as other architectures, at the end of next week. ARM: * Account stage2 page table allocations in memory stats. x86: * Account EPT/NPT arm64 page table allocations in memory stats. * Tracepoint cleanups/fixes for nested VM-Enter and emulated MSR accesses. * Drop eVMCS controls filtering for KVM on Hyper-V, all known versions of Hyper-V now support eVMCS fields associated with features that are enumerated to the guest. * Use KVM's sanitized VMCS config as the basis for the values of nested VMX capabilities MSRs. * A myriad event/exception fixes and cleanups. Most notably, pending exceptions morph into VM-Exits earlier, as soon as the exception is queued, instead of waiting until the next vmentry. This fixed a longstanding issue where the exceptions would incorrecly become double-faults instead of triggering a vmexit; the common case of page-fault vmexits had a special workaround, but now it's fixed for good. * A handful of fixes for memory leaks in error paths. * Cleanups for VMREAD trampoline and VMX's VM-Exit assembly flow. * Never write to memory from non-sleepable kvm_vcpu_check_block() * Selftests refinements and cleanups. * Misc typo cleanups. Generic: * remove KVM_REQ_UNHALT -----BEGIN PGP SIGNATURE----- iQFIBAABCAAyFiEE8TM4V0tmI4mGbHaCv/vSX3jHroMFAmM2zwcUHHBib256aW5p QHJlZGhhdC5jb20ACgkQv/vSX3jHroNpbwf+MlVeOlzE5SBdrJ0TEnLmKUel1lSz QnZzP5+D65oD0zhCilUZHcg6G4mzZ5SdVVOvrGJvA0eXh25ruLNMF6jbaABkMLk/ FfI1ybN7A82hwJn/aXMI/sUurWv4Jteaad20JC2DytBCnsW8jUqc49gtXHS2QWy4 3uMsFdpdTAg4zdJKgEUfXBmQviweVpjjl3ziRyZZ7yaeo1oP7XZ8LaE1nR2l5m0J mfjzneNm5QAnueypOh5KhSwIvqf6WHIVm/rIHDJ1HIFbgfOU0dT27nhb1tmPwAcE +cJnnMUHjZqtCXteHkAxMClyRq0zsEoKk0OGvSOOMoq3Q0DavSXUNANOig== =/hqX -----END PGP SIGNATURE----- Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm Pull kvm updates from Paolo Bonzini: "The first batch of KVM patches, mostly covering x86. ARM: - Account stage2 page table allocations in memory stats x86: - Account EPT/NPT arm64 page table allocations in memory stats - Tracepoint cleanups/fixes for nested VM-Enter and emulated MSR accesses - Drop eVMCS controls filtering for KVM on Hyper-V, all known versions of Hyper-V now support eVMCS fields associated with features that are enumerated to the guest - Use KVM's sanitized VMCS config as the basis for the values of nested VMX capabilities MSRs - A myriad event/exception fixes and cleanups. Most notably, pending exceptions morph into VM-Exits earlier, as soon as the exception is queued, instead of waiting until the next vmentry. This fixed a longstanding issue where the exceptions would incorrecly become double-faults instead of triggering a vmexit; the common case of page-fault vmexits had a special workaround, but now it's fixed for good - A handful of fixes for memory leaks in error paths - Cleanups for VMREAD trampoline and VMX's VM-Exit assembly flow - Never write to memory from non-sleepable kvm_vcpu_check_block() - Selftests refinements and cleanups - Misc typo cleanups Generic: - remove KVM_REQ_UNHALT" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (94 commits) KVM: remove KVM_REQ_UNHALT KVM: mips, x86: do not rely on KVM_REQ_UNHALT KVM: x86: never write to memory from kvm_vcpu_check_block() KVM: x86: Don't snapshot pending INIT/SIPI prior to checking nested events KVM: nVMX: Make event request on VMXOFF iff INIT/SIPI is pending KVM: nVMX: Make an event request if INIT or SIPI is pending on VM-Enter KVM: SVM: Make an event request if INIT or SIPI is pending when GIF is set KVM: x86: lapic does not have to process INIT if it is blocked KVM: x86: Rename kvm_apic_has_events() to make it INIT/SIPI specific KVM: x86: Rename and expose helper to detect if INIT/SIPI are allowed KVM: nVMX: Make an event request when pending an MTF nested VM-Exit KVM: x86: make vendor code check for all nested events mailmap: Update Oliver's email address KVM: x86: Allow force_emulation_prefix to be written without a reload KVM: selftests: Add an x86-only test to verify nested exception queueing KVM: selftests: Use uapi header to get VMX and SVM exit reasons/codes KVM: x86: Rename inject_pending_events() to kvm_check_and_inject_events() KVM: VMX: Update MTF and ICEBP comments to document KVM's subtle behavior KVM: x86: Treat pending TRIPLE_FAULT requests as pending exceptions KVM: x86: Morph pending exceptions to pending VM-Exits at queue time ... |
||
|
Linus Torvalds
|
0e470763d8 |
EFI updates for v6.1
- implement EFI boot support for LoongArch
- implement generic EFI compressed boot support for arm64, RISC-V and
LoongArch, none of which implement a decompressor today
- measure the kernel command line into the TPM if measured boot is in
effect
- refactor the EFI stub code in order to isolate DT dependencies for
architectures other than x86
- avoid calling SetVirtualAddressMap() on arm64 if the configured size
of the VA space guarantees that doing so is unnecessary
- move some ARM specific code out of the generic EFI source files
- unmap kernel code from the x86 mixed mode 1:1 page tables
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Merge tag 'efi-next-for-v6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi
Pull EFI updates from Ard Biesheuvel:
"A bit more going on than usual in the EFI subsystem. The main driver
for this has been the introduction of the LoonArch architecture last
cycle, which inspired some cleanup and refactoring of the EFI code.
Another driver for EFI changes this cycle and in the future is
confidential compute.
The LoongArch architecture does not use either struct bootparams or DT
natively [yet], and so passing information between the EFI stub and
the core kernel using either of those is undesirable. And in general,
overloading DT has been a source of issues on arm64, so using DT for
this on new architectures is a to avoid for the time being (even if we
might converge on something DT based for non-x86 architectures in the
future). For this reason, in addition to the patch that enables EFI
boot for LoongArch, there are a number of refactoring patches applied
on top of which separate the DT bits from the generic EFI stub bits.
These changes are on a separate topich branch that has been shared
with the LoongArch maintainers, who will include it in their pull
request as well. This is not ideal, but the best way to manage the
conflicts without stalling LoongArch for another cycle.
Another development inspired by LoongArch is the newly added support
for EFI based decompressors. Instead of adding yet another
arch-specific incarnation of this pattern for LoongArch, we are
introducing an EFI app based on the existing EFI libstub
infrastructure that encapulates the decompression code we use on other
architectures, but in a way that is fully generic. This has been
developed and tested in collaboration with distro and systemd folks,
who are eager to start using this for systemd-boot and also for arm64
secure boot on Fedora. Note that the EFI zimage files this introduces
can also be decompressed by non-EFI bootloaders if needed, as the
image header describes the location of the payload inside the image,
and the type of compression that was used. (Note that Fedora's arm64
GRUB is buggy [0] so you'll need a recent version or switch to
systemd-boot in order to use this.)
Finally, we are adding TPM measurement of the kernel command line
provided by EFI. There is an oversight in the TCG spec which results
in a blind spot for command line arguments passed to loaded images,
which means that either the loader or the stub needs to take the
measurement. Given the combinatorial explosion I am anticipating when
it comes to firmware/bootloader stacks and firmware based attestation
protocols (SEV-SNP, TDX, DICE, DRTM), it is good to set a baseline now
when it comes to EFI measured boot, which is that the kernel measures
the initrd and command line. Intermediate loaders can measure
additional assets if needed, but with the baseline in place, we can
deploy measured boot in a meaningful way even if you boot into Linux
straight from the EFI firmware.
Summary:
- implement EFI boot support for LoongArch
- implement generic EFI compressed boot support for arm64, RISC-V and
LoongArch, none of which implement a decompressor today
- measure the kernel command line into the TPM if measured boot is in
effect
- refactor the EFI stub code in order to isolate DT dependencies for
architectures other than x86
- avoid calling SetVirtualAddressMap() on arm64 if the configured
size of the VA space guarantees that doing so is unnecessary
- move some ARM specific code out of the generic EFI source files
- unmap kernel code from the x86 mixed mode 1:1 page tables"
* tag 'efi-next-for-v6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi: (24 commits)
efi/arm64: libstub: avoid SetVirtualAddressMap() when possible
efi: zboot: create MemoryMapped() device path for the parent if needed
efi: libstub: fix up the last remaining open coded boot service call
efi/arm: libstub: move ARM specific code out of generic routines
efi/libstub: measure EFI LoadOptions
efi/libstub: refactor the initrd measuring functions
efi/loongarch: libstub: remove dependency on flattened DT
efi: libstub: install boot-time memory map as config table
efi: libstub: remove DT dependency from generic stub
efi: libstub: unify initrd loading between architectures
efi: libstub: remove pointless goto kludge
efi: libstub: simplify efi_get_memory_map() and struct efi_boot_memmap
efi: libstub: avoid efi_get_memory_map() for allocating the virt map
efi: libstub: drop pointless get_memory_map() call
efi: libstub: fix type confusion for load_options_size
arm64: efi: enable generic EFI compressed boot
loongarch: efi: enable generic EFI compressed boot
riscv: efi: enable generic EFI compressed boot
efi/libstub: implement generic EFI zboot
efi/libstub: move efi_system_table global var into separate object
...
|
||
|
Linus Torvalds
|
ab29622157 |
whack-a-mole: cropped up open-coded file_inode() uses...
-----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQQqUNBr3gm4hGXdBJlZ7Krx/gZQ6wUCYzxj0gAKCRBZ7Krx/gZQ 66/1AQC/KfIAINNOPxozsZaxOaOKo0ouVJ7sJV4ZGsPKpU69gwD/UodJZCtyZ52h wwkmfzTDjAgGt1QCKj96zk2XFqg4swE= =u0pv -----END PGP SIGNATURE----- Merge tag 'pull-file_inode' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull file_inode() updates from Al Vrio: "whack-a-mole: cropped up open-coded file_inode() uses..." * tag 'pull-file_inode' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: orangefs: use ->f_mapping _nfs42_proc_copy(): use ->f_mapping instead of file_inode()->i_mapping dma_buf: no need to bother with file_inode()->i_mapping nfs_finish_open(): don't open-code file_inode() bprm_fill_uid(): don't open-code file_inode() sgx: use ->f_mapping... exfat_iterate(): don't open-code file_inode(file) ibmvmc: don't open-code file_inode() |
||
|
Linus Torvalds
|
0326074ff4 |
Networking changes for 6.1.
Core
----
- Introduce and use a single page frag cache for allocating small skb
heads, clawing back the 10-20% performance regression in UDP flood
test from previous fixes.
- Run packets which already went thru HW coalescing thru SW GRO.
This significantly improves TCP segment coalescing and simplifies
deployments as different workloads benefit from HW or SW GRO.
- Shrink the size of the base zero-copy send structure.
- Move TCP init under a new slow / sleepable version of DO_ONCE().
BPF
---
- Add BPF-specific, any-context-safe memory allocator.
- Add helpers/kfuncs for PKCS#7 signature verification from BPF
programs.
- Define a new map type and related helpers for user space -> kernel
communication over a ring buffer (BPF_MAP_TYPE_USER_RINGBUF).
- Allow targeting BPF iterators to loop through resources of one
task/thread.
- Add ability to call selected destructive functions.
Expose crash_kexec() to allow BPF to trigger a kernel dump.
Use CAP_SYS_BOOT check on the loading process to judge permissions.
- Enable BPF to collect custom hierarchical cgroup stats efficiently
by integrating with the rstat framework.
- Support struct arguments for trampoline based programs.
Only structs with size <= 16B and x86 are supported.
- Invoke cgroup/connect{4,6} programs for unprivileged ICMP ping
sockets (instead of just TCP and UDP sockets).
- Add a helper for accessing CLOCK_TAI for time sensitive network
related programs.
- Support accessing network tunnel metadata's flags.
- Make TCP SYN ACK RTO tunable by BPF programs with TCP Fast Open.
- Add support for writing to Netfilter's nf_conn:mark.
Protocols
---------
- WiFi: more Extremely High Throughput (EHT) and Multi-Link
Operation (MLO) work (802.11be, WiFi 7).
- vsock: improve support for SO_RCVLOWAT.
- SMC: support SO_REUSEPORT.
- Netlink: define and document how to use netlink in a "modern" way.
Support reporting missing attributes via extended ACK.
- IPSec: support collect metadata mode for xfrm interfaces.
- TCPv6: send consistent autoflowlabel in SYN_RECV state
and RST packets.
- TCP: introduce optional per-netns connection hash table to allow
better isolation between namespaces (opt-in, at the cost of memory
and cache pressure).
- MPTCP: support TCP_FASTOPEN_CONNECT.
- Add NEXT-C-SID support in Segment Routing (SRv6) End behavior.
- Adjust IP_UNICAST_IF sockopt behavior for connected UDP sockets.
- Open vSwitch:
- Allow specifying ifindex of new interfaces.
- Allow conntrack and metering in non-initial user namespace.
- TLS: support the Korean ARIA-GCM crypto algorithm.
- Remove DECnet support.
Driver API
----------
- Allow selecting the conduit interface used by each port
in DSA switches, at runtime.
- Ethernet Power Sourcing Equipment and Power Device support.
- Add tc-taprio support for queueMaxSDU parameter, i.e. setting
per traffic class max frame size for time-based packet schedules.
- Support PHY rate matching - adapting between differing host-side
and link-side speeds.
- Introduce QUSGMII PHY mode and 1000BASE-KX interface mode.
- Validate OF (device tree) nodes for DSA shared ports; make
phylink-related properties mandatory on DSA and CPU ports.
Enforcing more uniformity should allow transitioning to phylink.
- Require that flash component name used during update matches one
of the components for which version is reported by info_get().
- Remove "weight" argument from driver-facing NAPI API as much
as possible. It's one of those magic knobs which seemed like
a good idea at the time but is too indirect to use in practice.
- Support offload of TLS connections with 256 bit keys.
New hardware / drivers
----------------------
- Ethernet:
- Microchip KSZ9896 6-port Gigabit Ethernet Switch
- Renesas Ethernet AVB (EtherAVB-IF) Gen4 SoCs
- Analog Devices ADIN1110 and ADIN2111 industrial single pair
Ethernet (10BASE-T1L) MAC+PHY.
- Rockchip RV1126 Gigabit Ethernet (a version of stmmac IP).
- Ethernet SFPs / modules:
- RollBall / Hilink / Turris 10G copper SFPs
- HALNy GPON module
- WiFi:
- CYW43439 SDIO chipset (brcmfmac)
- CYW89459 PCIe chipset (brcmfmac)
- BCM4378 on Apple platforms (brcmfmac)
Drivers
-------
- CAN:
- gs_usb: HW timestamp support
- Ethernet PHYs:
- lan8814: cable diagnostics
- Ethernet NICs:
- Intel (100G):
- implement control of FCS/CRC stripping
- port splitting via devlink
- L2TPv3 filtering offload
- nVidia/Mellanox:
- tunnel offload for sub-functions
- MACSec offload, w/ Extended packet number and replay
window offload
- significantly restructure, and optimize the AF_XDP support,
align the behavior with other vendors
- Huawei:
- configuring DSCP map for traffic class selection
- querying standard FEC statistics
- querying SerDes lane number via ethtool
- Marvell/Cavium:
- egress priority flow control
- MACSec offload
- AMD/SolarFlare:
- PTP over IPv6 and raw Ethernet
- small / embedded:
- ax88772: convert to phylink (to support SFP cages)
- altera: tse: convert to phylink
- ftgmac100: support fixed link
- enetc: standard Ethtool counters
- macb: ZynqMP SGMII dynamic configuration support
- tsnep: support multi-queue and use page pool
- lan743x: Rx IP & TCP checksum offload
- igc: add xdp frags support to ndo_xdp_xmit
- Ethernet high-speed switches:
- Marvell (prestera):
- support SPAN port features (traffic mirroring)
- nexthop object offloading
- Microchip (sparx5):
- multicast forwarding offload
- QoS queuing offload (tc-mqprio, tc-tbf, tc-ets)
- Ethernet embedded switches:
- Marvell (mv88e6xxx):
- support RGMII cmode
- NXP (felix):
- standardized ethtool counters
- Microchip (lan966x):
- QoS queuing offload (tc-mqprio, tc-tbf, tc-cbs, tc-ets)
- traffic policing and mirroring
- link aggregation / bonding offload
- QUSGMII PHY mode support
- Qualcomm 802.11ax WiFi (ath11k):
- cold boot calibration support on WCN6750
- support to connect to a non-transmit MBSSID AP profile
- enable remain-on-channel support on WCN6750
- Wake-on-WLAN support for WCN6750
- support to provide transmit power from firmware via nl80211
- support to get power save duration for each client
- spectral scan support for 160 MHz
- MediaTek WiFi (mt76):
- WiFi-to-Ethernet bridging offload for MT7986 chips
- RealTek WiFi (rtw89):
- P2P support
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-next-6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
Pull networking updates from Jakub Kicinski:
"Core:
- Introduce and use a single page frag cache for allocating small skb
heads, clawing back the 10-20% performance regression in UDP flood
test from previous fixes.
- Run packets which already went thru HW coalescing thru SW GRO. This
significantly improves TCP segment coalescing and simplifies
deployments as different workloads benefit from HW or SW GRO.
- Shrink the size of the base zero-copy send structure.
- Move TCP init under a new slow / sleepable version of DO_ONCE().
BPF:
- Add BPF-specific, any-context-safe memory allocator.
- Add helpers/kfuncs for PKCS#7 signature verification from BPF
programs.
- Define a new map type and related helpers for user space -> kernel
communication over a ring buffer (BPF_MAP_TYPE_USER_RINGBUF).
- Allow targeting BPF iterators to loop through resources of one
task/thread.
- Add ability to call selected destructive functions. Expose
crash_kexec() to allow BPF to trigger a kernel dump. Use
CAP_SYS_BOOT check on the loading process to judge permissions.
- Enable BPF to collect custom hierarchical cgroup stats efficiently
by integrating with the rstat framework.
- Support struct arguments for trampoline based programs. Only
structs with size <= 16B and x86 are supported.
- Invoke cgroup/connect{4,6} programs for unprivileged ICMP ping
sockets (instead of just TCP and UDP sockets).
- Add a helper for accessing CLOCK_TAI for time sensitive network
related programs.
- Support accessing network tunnel metadata's flags.
- Make TCP SYN ACK RTO tunable by BPF programs with TCP Fast Open.
- Add support for writing to Netfilter's nf_conn:mark.
Protocols:
- WiFi: more Extremely High Throughput (EHT) and Multi-Link Operation
(MLO) work (802.11be, WiFi 7).
- vsock: improve support for SO_RCVLOWAT.
- SMC: support SO_REUSEPORT.
- Netlink: define and document how to use netlink in a "modern" way.
Support reporting missing attributes via extended ACK.
- IPSec: support collect metadata mode for xfrm interfaces.
- TCPv6: send consistent autoflowlabel in SYN_RECV state and RST
packets.
- TCP: introduce optional per-netns connection hash table to allow
better isolation between namespaces (opt-in, at the cost of memory
and cache pressure).
- MPTCP: support TCP_FASTOPEN_CONNECT.
- Add NEXT-C-SID support in Segment Routing (SRv6) End behavior.
- Adjust IP_UNICAST_IF sockopt behavior for connected UDP sockets.
- Open vSwitch:
- Allow specifying ifindex of new interfaces.
- Allow conntrack and metering in non-initial user namespace.
- TLS: support the Korean ARIA-GCM crypto algorithm.
- Remove DECnet support.
Driver API:
- Allow selecting the conduit interface used by each port in DSA
switches, at runtime.
- Ethernet Power Sourcing Equipment and Power Device support.
- Add tc-taprio support for queueMaxSDU parameter, i.e. setting per
traffic class max frame size for time-based packet schedules.
- Support PHY rate matching - adapting between differing host-side
and link-side speeds.
- Introduce QUSGMII PHY mode and 1000BASE-KX interface mode.
- Validate OF (device tree) nodes for DSA shared ports; make
phylink-related properties mandatory on DSA and CPU ports.
Enforcing more uniformity should allow transitioning to phylink.
- Require that flash component name used during update matches one of
the components for which version is reported by info_get().
- Remove "weight" argument from driver-facing NAPI API as much as
possible. It's one of those magic knobs which seemed like a good
idea at the time but is too indirect to use in practice.
- Support offload of TLS connections with 256 bit keys.
New hardware / drivers:
- Ethernet:
- Microchip KSZ9896 6-port Gigabit Ethernet Switch
- Renesas Ethernet AVB (EtherAVB-IF) Gen4 SoCs
- Analog Devices ADIN1110 and ADIN2111 industrial single pair
Ethernet (10BASE-T1L) MAC+PHY.
- Rockchip RV1126 Gigabit Ethernet (a version of stmmac IP).
- Ethernet SFPs / modules:
- RollBall / Hilink / Turris 10G copper SFPs
- HALNy GPON module
- WiFi:
- CYW43439 SDIO chipset (brcmfmac)
- CYW89459 PCIe chipset (brcmfmac)
- BCM4378 on Apple platforms (brcmfmac)
Drivers:
- CAN:
- gs_usb: HW timestamp support
- Ethernet PHYs:
- lan8814: cable diagnostics
- Ethernet NICs:
- Intel (100G):
- implement control of FCS/CRC stripping
- port splitting via devlink
- L2TPv3 filtering offload
- nVidia/Mellanox:
- tunnel offload for sub-functions
- MACSec offload, w/ Extended packet number and replay window
offload
- significantly restructure, and optimize the AF_XDP support,
align the behavior with other vendors
- Huawei:
- configuring DSCP map for traffic class selection
- querying standard FEC statistics
- querying SerDes lane number via ethtool
- Marvell/Cavium:
- egress priority flow control
- MACSec offload
- AMD/SolarFlare:
- PTP over IPv6 and raw Ethernet
- small / embedded:
- ax88772: convert to phylink (to support SFP cages)
- altera: tse: convert to phylink
- ftgmac100: support fixed link
- enetc: standard Ethtool counters
- macb: ZynqMP SGMII dynamic configuration support
- tsnep: support multi-queue and use page pool
- lan743x: Rx IP & TCP checksum offload
- igc: add xdp frags support to ndo_xdp_xmit
- Ethernet high-speed switches:
- Marvell (prestera):
- support SPAN port features (traffic mirroring)
- nexthop object offloading
- Microchip (sparx5):
- multicast forwarding offload
- QoS queuing offload (tc-mqprio, tc-tbf, tc-ets)
- Ethernet embedded switches:
- Marvell (mv88e6xxx):
- support RGMII cmode
- NXP (felix):
- standardized ethtool counters
- Microchip (lan966x):
- QoS queuing offload (tc-mqprio, tc-tbf, tc-cbs, tc-ets)
- traffic policing and mirroring
- link aggregation / bonding offload
- QUSGMII PHY mode support
- Qualcomm 802.11ax WiFi (ath11k):
- cold boot calibration support on WCN6750
- support to connect to a non-transmit MBSSID AP profile
- enable remain-on-channel support on WCN6750
- Wake-on-WLAN support for WCN6750
- support to provide transmit power from firmware via nl80211
- support to get power save duration for each client
- spectral scan support for 160 MHz
- MediaTek WiFi (mt76):
- WiFi-to-Ethernet bridging offload for MT7986 chips
- RealTek WiFi (rtw89):
- P2P support"
* tag 'net-next-6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1864 commits)
eth: pse: add missing static inlines
once: rename _SLOW to _SLEEPABLE
net: pse-pd: add regulator based PSE driver
dt-bindings: net: pse-dt: add bindings for regulator based PoDL PSE controller
ethtool: add interface to interact with Ethernet Power Equipment
net: mdiobus: search for PSE nodes by parsing PHY nodes.
net: mdiobus: fwnode_mdiobus_register_phy() rework error handling
net: add framework to support Ethernet PSE and PDs devices
dt-bindings: net: phy: add PoDL PSE property
net: marvell: prestera: Propagate nh state from hw to kernel
net: marvell: prestera: Add neighbour cache accounting
net: marvell: prestera: add stub handler neighbour events
net: marvell: prestera: Add heplers to interact with fib_notifier_info
net: marvell: prestera: Add length macros for prestera_ip_addr
net: marvell: prestera: add delayed wq and flush wq on deinit
net: marvell: prestera: Add strict cleanup of fib arbiter
net: marvell: prestera: Add cleanup of allocated fib_nodes
net: marvell: prestera: Add router nexthops ABI
eth: octeon: fix build after netif_napi_add() changes
net/mlx5: E-Switch, Return EBUSY if can't get mode lock
...
|
||
Dave Hansen
|
c5129ecc12 |
x86/mm: Ease W^X enforcement back to just a warning
Currently, the "change_page_attr" (CPA) code refuses to create W+X mappings on 64-bit kernels. There have been reports both from 32-bit[1] and from BPF[2] users where this change kept the system from booting. These reports are showing up even after about a month of soak time in -next. To avoid breaking anything, never enforce W^X. Always warn and return the requested permissions even if a problem is detected. 1. https://lore.kernel.org/all/CAMj1kXHcF_iK_g0OZSkSv56Wmr=eQGQwNstcNjLEfS=mm7a06w@mail.gmail.com/ 2. https://lore.kernel.org/bpf/c84cc27c1a5031a003039748c3c099732a718aec.camel@kernel.org/T/#u Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: Borislav Petkov <bp@alien8.de> Cc: x86@kernel.org Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Kees Cook <keescook@chromium.org> Cc: Peter Zijlstra <peterz@infradead.org> |
||
|
Linus Torvalds
|
3eba620e7b |
- The usual round of smaller fixes and cleanups all over the tree
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||
|
Linus Torvalds
|
193e2268a3 |
- More work by James Morse to disentangle the resctrl filesystem generic
code from the architectural one with the endgoal of plugging ARM's MPAM implementation into it too so that the user interface remains the same - Properly restore the MSR_MISC_FEATURE_CONTROL value instead of blindly overwriting it to 0 -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmM8QhAACgkQEsHwGGHe VUqazA/8DIfBYMXe/M6qk+tZnLyBJPL3/3hzqOPc3fu2pmwzCHhb+1ksk7s0uLEO xdV4CK3SDc8WQnsiF9l4Hta1PhvD2Uhf6duCVv1DT0dmBQ6m9tks8SwhbgSCNrIh cQ8ABuTUsE0/PNW6Zx7x1JC0e2J6Yjhn55WGMGJD7kGl0eo1ClYSv8vnReBE/6cX YhgjVnWAeUNgwKayokbN7PFXwuP0WjDGmrn+7e8AF4emHWvdDYYw9F1MHIOvZoVO lLJi6f7ddjxCQSWPg3mG0KSvc4EXixhtEzq8Mk/16drkKlPdn89sHkqEyR7vP/jQ lEahxtzoWEfZXwVDPGCIIbfjab/lvvr4lTumKzxUgHEha+ORtWZGaukr4kPg6BRf IBrE12jCBKmYzzgE0e9EWGr0KCn6qXrnq37yzccQXVM0WxsBOUZWQXhInl6mSdz9 uus1rKR/swJBT58ybzvw2LGFYUow0bb0qY6XvQxmriiyA60EVmf9/Nt/KgatXa63 s9Q4mVii4W1tgxSmCjNVZnDFhXvvowclNU4TuJ6d+6kvEnrvoW5+vDRk2O7iJKqf K2zSe56lf0TnBe9WaUlxRFaTZg+UXZt7a+e7/hQ90wT/7fkIMk1uxVpqnQW4vDPi YskbKRPc5DlLBSJ+yxW9Ntff4QVIdUhhj0bcKBAo8nmd5Kj1hy4= =1iEb -----END PGP SIGNATURE----- Merge tag 'x86_cache_for_v6.1_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 cache resource control updates from Borislav Petkov: - More work by James Morse to disentangle the resctrl filesystem generic code from the architectural one with the endgoal of plugging ARM's MPAM implementation into it too so that the user interface remains the same - Properly restore the MSR_MISC_FEATURE_CONTROL value instead of blindly overwriting it to 0 * tag 'x86_cache_for_v6.1_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (22 commits) x86/resctrl: Make resctrl_arch_rmid_read() return values in bytes x86/resctrl: Add resctrl_rmid_realloc_limit to abstract x86's boot_cpu_data x86/resctrl: Rename and change the units of resctrl_cqm_threshold x86/resctrl: Move get_corrected_mbm_count() into resctrl_arch_rmid_read() x86/resctrl: Move mbm_overflow_count() into resctrl_arch_rmid_read() x86/resctrl: Pass the required parameters into resctrl_arch_rmid_read() x86/resctrl: Abstract __rmid_read() x86/resctrl: Allow per-rmid arch private storage to be reset x86/resctrl: Add per-rmid arch private storage for overflow and chunks x86/resctrl: Calculate bandwidth from the previous __mon_event_count() chunks x86/resctrl: Allow update_mba_bw() to update controls directly x86/resctrl: Remove architecture copy of mbps_val x86/resctrl: Switch over to the resctrl mbps_val list x86/resctrl: Create mba_sc configuration in the rdt_domain x86/resctrl: Abstract and use supports_mba_mbps() x86/resctrl: Remove set_mba_sc()s control array re-initialisation x86/resctrl: Add domain offline callback for resctrl work x86/resctrl: Group struct rdt_hw_domain cleanup x86/resctrl: Add domain online callback for resctrl work x86/resctrl: Merge mon_capable and mon_enabled ... |
||
|
Linus Torvalds
|
b5f0b11353 |
- Get rid of a single ksize() usage
- By popular demand, print the previous microcode revision an update was done over - Remove more code related to the now gone MICROCODE_OLD_INTERFACE - Document the problems stemming from microcode late loading -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmM8QL8ACgkQEsHwGGHe VUoDxw/9FA3rOAZD7N0PI/vspMUxEDQVYV60tfuuynao72HZv+tfJbRTXe42p3ZO B+kRPFud4lAOE1ykDHJ2A2OZzvthGfYlUnMyvk1IvK/gOwkkiSH4c6sVSrOYWtl7 uoIN/3J83BMZoWNOKqrg1OOzotzkTyeucPXdWF+sRkfVzBIgbDqtplbFFCP4abPK WxatY2hkTfBCiN92OSOLaMGg0POpmycy+6roR2Qr5rWrC7nfREVNbKdOyEykZsfV U2gPm0A953sZ3Ye6waFib+qjJdyR7zBQRCJVEGOB6g8BlNwqGv/TY7NIUWSVFT9Y qcAnD3hI0g0UTYdToBUvYEpfD8zC9Wg3tZEpZSBRKh3AR2+Xt44VKQFO4L9uIt6g hWFMBLsFiYnBmKW3arNLQcdamE34GRhwUfXm0OjHTvTWb3aFO1I9+NBCaHp19KVy HD13wGSyj5V9SAVD0ztRFut4ZESejDyYBw9joB2IsjkY2IJmAAsRFgV0KXqUvQLX TX13hnhm894UfQ+4KCXnA0UeEDoXhwAbYFxR89yGeOxoGe1oaPXr9C1/r88YLq0n ekjIVZ3G97PIxmayj3cv9YrRIrrJi4PWF1Raey6go3Ma+rNBRnya5UF6Noch1lHh HeF7t84BZ5Ub6GweWYaMHQZCA+wMCZMYYuCMNzN7b54yRtQuvCc= =lWDD -----END PGP SIGNATURE----- Merge tag 'x86_microcode_for_v6.1_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x75 microcode loader updates from Borislav Petkov: - Get rid of a single ksize() usage - By popular demand, print the previous microcode revision an update was done over - Remove more code related to the now gone MICROCODE_OLD_INTERFACE - Document the problems stemming from microcode late loading * tag 'x86_microcode_for_v6.1_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/microcode/AMD: Track patch allocation size explicitly x86/microcode: Print previous version of microcode after reload x86/microcode: Remove ->request_microcode_user() x86/microcode: Document the whole late loading problem |
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Linus Torvalds
|
9bf445b65d |
- Ensure paravirt patching site descriptors are aligned properly so that
code can do proper arithmetic with their addresses -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmM8P3AACgkQEsHwGGHe VUo+ShAAlfs3NlgbioWgHShcZejOT8itvbMz9KDibVd/vH9bk0wREb9nSWkjiXvU a1OlAyskqwwOnYeWkPxSsXGNzS8TyhtBnTU8PBwmNhADktjQZXcTjptKA5MLPlO0 vXKYdGacj2F+Pnllo2BTAQO3HPSYC1D49CqZKpgt4eD9KJyx+wizbmT8wUHeKSIz q/J+3JfU5TdSg0bgRcv9iBLJZ52DEBGpSC8o5NSPfFygDjYkkKQBSykYPF2rhQx9 L2qirxbOZngL0A91qnI4QqmdUK7PQPNMW7FHtMJYEeYccGsxUatl0AwCNBAc7vuE cNAUGQfOblZfrrAByUwuuY/o0cNfeAQFsh8p4xOjf9M/aVUBjKOKFEXzY7TzjQi5 TDRWBDCkjRC3Bqh7uXzbG8R4a0WOUsELcmYHAntxV8v/IJHwjNsVk/YNr0U3minB 85cucsZUcOB6ApicGtHo02tjca0Jc4k1CijdGZki3YNEmH4fyHydrI4HAB6QArwE g/mJ26+diZezM0MNYLuS5yXFWjhaUzlH6Qu8CI+2/q/jSN3OOQLfkCDWBiYqh2CV ye0HLrlkOav7FNDkW7g4v6G0MLTYBNQpoLxQzt4e8/oubTjOYxb5/xHS1kHVtBKb QegcBHkN2JcHfe3WK4vEunKT9DAyeSgGHdFKialANOXDI72INNs= =ibJy -----END PGP SIGNATURE----- Merge tag 'x86_paravirt_for_v6.1_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 paravirt fix from Borislav Petkov: - Ensure paravirt patching site descriptors are aligned properly so that code can do proper arithmetic with their addresses * tag 'x86_paravirt_for_v6.1_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/paravirt: Ensure proper alignment |
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Linus Torvalds
|
901735e51e |
- Drop misleading "RIP" from the opcodes dumping message
- Correct APM entry's Konfig help text -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmM8PoMACgkQEsHwGGHe VUpptBAAm31ZnZT1u4OMCWIfS8dUJYKQA0pg4Xb4Hj0epFFjqGvV15+JFLQrvNv8 kWbCZS7wryNsch0dnNyxico6mBD6BGqUSTsiflcpk5rWzy0JOpIfeCs5dsNYhIkV Pqk0qXK25kfzYW/7I2HE/aNeE7jxAOTcKzLtW6J74UYj3jLWSmtlPP/o5qxMUeN+ vYlLg45jhjcTH5cBD1U2MmbJP3M8WRcRgHpI7ZGrvOXUgGbTqdu0m+dsCZIkIzps ePDgX3mgAU6wjckjH333hbas256SAWWEtBYID/71ZIgK8EjabIu6FcwWAxyfexjp OU/k2iBNOXHbzhO4lEzqar/lcNHyfI4edxw4gsmIQddmmNI2b62s0Nis7Or8DDU6 v5ZPrW6tcvVT7cZqP3naidRTNW2Cwo/+/Z09VQnhPQaZ7U8U5uCS4wgHiJuV3e0s nH02QU+t/9zrn46UurVXCSSHwWNaGNA4Gb3a4ZdwRUKdxMrf5frmU+dfiFhdMMoo I3lxQvMFtFb2rLNRA6zWDhsJFVU3F5cMu7zlGKHTNlD/TcO/qcKqiTkrAyM5trLG NqbPdwBVzdwLR6MgYOUDI+nB5Ad1Uq2Cx+SfRLT+C8L6dZFB+zvNiBH/8Q+25ohC c4ldgXSiZulfLApG3JY5chVvFWGa2H+EpoFexyQi+F9AAIRD14Q= =cNp0 -----END PGP SIGNATURE----- Merge tag 'x86_misc_for_v6.1_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull misc x86 fixes from Borislav Petkov: - Drop misleading "RIP" from the opcodes dumping message - Correct APM entry's Konfig help text * tag 'x86_misc_for_v6.1_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/dumpstack: Don't mention RIP in "Code: " x86/Kconfig: Specify idle=poll instead of no-hlt |
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Linus Torvalds
|
bb1f11546e |
- "Slap" the __builtin_ffs/ctzl() compiler builtins in front of the
kernel's optimized ffs()/ffz() helpers in order to make use of the compiler's constant folding optmization passes. -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmM8PWQACgkQEsHwGGHe VUqyoRAAhS/b9Jie/Tvx4gVHkydCe+6403MVjRumSqh4634QaiJP1nILOgH+P3qj BSuR0el8rAVxGm6vF6IoU5+rM17MQ4d3M2xtz+ZxdIOwIFDVoHoJS9EQSiArOspD eOUOLlPb/Q5/n0pPMCxBzR3NYfhaWQ9YzujtVeFvR2KxesQAKpN9DpQxX1rybyee YJhsRlC7+8TEW7CgFo4+qzC291eUE1kdteGkjM4GH2ts3R3sllP5wjPJpHj/oCR4 LBVi8Ie+5yHHpKfnkYNR4DephsYlpmjcKngYT6Jf+dBEhzXpgvJNzpUG42ZjJb94 g8RG67tvYslU9psutpx/AilohLxaYSyY5AnXcaHGjvX27dadAX1vPKlP+Xqpc+IM /LHpKdcsWDuH0v68kw2wbLtUgD+Is7OQbE5oOaGCQ3VbMkhtFoqbFayu3KHu3uyt 4Jkb0xPjHi//eOp69334PuP/ksbO7vs/AEZi6PvNp71szBw8u80+9LzhgWnqN4hU sb2+PYP27bIxflcavPqPg8WqwZrRSrE/gb6AG0J3M4zFAZ3tBx/Gpd8Auk4V0VhZ aLTOa0S6C0Q5IO6NlkA5OGedphMud+Pki21gyJQIweVsScrjEd1l/YDJMFcoCSqW mNAkEPq+7Xerlmfv/BhlyOjPH/DBrb3pthNoJDTui4eiyrw8WEU= =Reul -----END PGP SIGNATURE----- Merge tag 'x86_asm_for_v6.1_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 asm update from Borislav Petkov: - Use the __builtin_ffs/ctzl() compiler builtins for the constant argument case in the kernel's optimized ffs()/ffz() helpers in order to make use of the compiler's constant folding optmization passes. * tag 'x86_asm_for_v6.1_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/asm/bitops: Use __builtin_ctzl() to evaluate constant expressions x86/asm/bitops: Use __builtin_ffs() to evaluate constant expressions |
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Linus Torvalds
|
8cded8fb12 |
- Make sure an INT3 is slapped after every unconditional retpoline JMP
as both vendors suggest - Clean up pciserial a bit -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmM8AxoACgkQEsHwGGHe VUrdqQ//c07XggioZRVWASkE5vXggSuM1BzCkf55kzx3Hp20F8ui26cgOW8nmNr9 8pKjcTSGZvZPyZFHPBmZDFqver+viSAA3y+/DopNMd6DIeQWOCtJMFdoGPuPqCMq qYb3WkGu3i4AcjHxeiYKIlf76w+DfSomk+NspUYKLxGuPH6Hg5MFLwv32c0orh/g sMM5YCFP4xKtMTrpZ8GXO8+81dU57KwCPnmLy6RrPPCjIHkEmS9KBaib2T9udFvf DMQVZGEU4DQkl+SXoj5fOn03eQ56kDaH3OyV7JbHUwIXpASAEJZENwBD/HmP02aB uN+tm9brjyJLPD92FldoJPkcsYBcwS1vx+TBH7/KLsaGZziZ1+Oc8hk6fbAd6yp9 W/ex491SCmdBA0wQelw/fZJ24/QXOT1PGIKl96srH0VPvhQtCESMDbKMdTY4p6Ow s6GYF+HW6SV5d/jUQQzfmd1D7Ur6RxwvUnRvfDg8/AZ+INQRciMG0aFJa3E1SUJf TkfXZ12XsL2LABK4MWOJqJsB+DSnEZbjOaPxWIKBhMUHxoc8nIny5ZFZbww5iVii pUdKEMgicm1zuaiIoQBY9K6oOlR2ixZJDw++NzfId2jwsiR4MeJH78sB61mItMfs WnwIkNxNfimgvcGtAogTMalJlnN56ukrjjwGrdhJGL3WovQ8qHc= =Ggh3 -----END PGP SIGNATURE----- Merge tag 'x86_core_for_v6.1_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 core fixes from Borislav Petkov: - Make sure an INT3 is slapped after every unconditional retpoline JMP as both vendors suggest - Clean up pciserial a bit * tag 'x86_core_for_v6.1_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86,retpoline: Be sure to emit INT3 after JMP *%\reg x86/earlyprintk: Clean up pciserial |
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Linus Torvalds
|
5bb3a16dbe |
- Add support for locking the APIC in X2APIC mode to prevent SGX enclave leaks
-----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmM7/C0ACgkQEsHwGGHe VUp3jA//caeFnxfKU8F6B+D+sqXub+fRC88U/5j5TVgueiFdpgbHxbeb5isV2DW8 /1as5LN6PCy0V9ax873PblaRdL+ir2KVjzTOQhv1fsBWtRJgRAte6ltHfncST3jM Qm9ELCSYlwX6wgPDFWrLd5/jCHLq/7ffvWATwt4ZS9/+ebwJJ3JRU82aydvSAe+M tYDLA0RYjrTKB7bfhlxft8n3/ttOwmaQ9sPw6J9KWL9VZ8d7uA0cZgHMFgclr9xb +cTuOQwJ+a+njS3tXYWH0lU4lLw6tRcWrl3/gHpiuiwU85xdoClyCcsmvZYMLy1s cv4CmAQqs0dSlcII/F+6pTh+E8gcpzm2+uiP8k56dCK3c9OhtdKcPRcxm169JID+ hKZ9rcscx1e/Q3rzhRtC4w2LguDcARe2b0OSMsGH40uZ/UOHdnYVk8oD81O9LWrB T4DgjJCcSf4y0KGDXtjJ39POfe0zFHgx8nr5JOL9Las6gZtXZHRmCzBacIU6JeJo 5VEl6Yx1ca7aiuNTTcsmmW3zbsR9J6VppFZ6ma9jTTM8HbINM6g4UDepkeubNUdv tAJVbb6MEDGtT1ybH4oalrYkPfhYDwRkahqPtMY0ROtlzxO65q2DI3rH2gtyboas oP4hfEDtzKiJj4FiIRMKbryKz7MBWImHMRovRGKjB/Y48mTxX3M= =e8H8 -----END PGP SIGNATURE----- Merge tag 'x86_apic_for_v6.1_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 APIC update from Borislav Petkov: - Add support for locking the APIC in X2APIC mode to prevent SGX enclave leaks * tag 'x86_apic_for_v6.1_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/apic: Don't disable x2APIC if locked |
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Linus Torvalds
|
51eaa866a5 |
- Fix the APEI MCE callback handler to consult the hardware about the
granularity of the memory error instead of hard-coding it - Offline memory pages on Intel machines after 2 errors reported per page -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmM7+ZAACgkQEsHwGGHe VUp3Rg/9HkwMcl8HOEShQoN1HvhDh68DeR0pgZpFjooBgilqFuPopWn7rwOsebza b6Z1XYg3pmWwkG35ztHedFP8WkRb8aZDJV7czpGxiaxtRUCuXpGZJk45CFzU+3l8 FD9XKryDf6rPSKmg6w/63FUPVXJXpM8+pAlEso9BVrb6xmUb3n6ul5A/kt3Z4OBZ beNDI54s7pfKXmCYze7VbK2nqyEM9fmDuPAhaicB/qhVEqxSWMNKDYDhHs1wt/Um dOlLC2paqcc9EaRhV/L/9Pvi1zasy7Q0+jSIXhgbag7EQmZRYQn3Pe0xqUJNhK2H ulm65Dy+AZ3y15+qBkBOgoNF/By5eMwJ+C9bucC6FWkPG0XMjDVGiphf+DPZmAHk msYSvyp++WidNYn/bXhbQv0epjheLoHj22lTvlHwLquI+eISuDV24DIcBQQpFFed S/8sMw3RqoOgAd3LHr1NGcd/7eF+b/Lc1mtUx7qhg/W0V2cYVTGIcNJMAJ8USHMy IxFiB+8x7ps0lRJGlaApylLQOGAhS9WxpH2UUIKIoURrmCi9Pf8OaHzfIA5jYK+t xEQTzZE5ZUB0V5mvNhAWTm9HvlaW1WNbokt0vElAEJ9WAjRfMVYKya7shlAK2MYI nrM3eqlUwOqTGLGCA7IhCS9Re7M5ZKZk5nsLygnYsadntqCmN0c= =5tV9 -----END PGP SIGNATURE----- Merge tag 'ras_core_for_v6.1_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 RAS updates from Borislav Petkov: - Fix the APEI MCE callback handler to consult the hardware about the granularity of the memory error instead of hard-coding it - Offline memory pages on Intel machines after 2 errors reported per page * tag 'ras_core_for_v6.1_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/mce: Retrieve poison range from hardware RAS/CEC: Reduce offline page threshold for Intel systems |
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Linus Torvalds
|
7db99f01d1 |
- Print the CPU number at segfault time. The number printed is not
always accurate (preemption is enabled at that time) but the print string contains "likely" and after a lot of back'n'forth on this, this was the consensus that was reached. See thread starting at: https://lore.kernel.org/r/5d62c1d0-7425-d5bb-ecb5-1dc3b4d7d245@intel.com - After a *lot* of testing and polishing, finally the clear_user() improvements to inline REP; STOSB by default -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmM780YACgkQEsHwGGHe VUoVmRAAhTTUYqe81XRAX1Egge1RVwXgZFZQQD54239IveLt80kpg1AFR697z3/G GSaL5dy9/LEwyE0r9u7VN1SuY3Bz8LEZLYfurKlGfMGv3mlcUedLSWHQNaNZ4+cx nwP1VjrfH80Qwn7l99hOZ7kwCRlUWdsamcMsv6n7Fq0YnM7vW6MgmQGlqCGADQKI GGElgn3VaU5pEXF4YtZE0qfy17dgkW+RJD7RlaAtzmKcdKYiKgfX0Mh9bkQ5VVcb 973peg9GHKHoP0w54LYKNgF/WkYPpBwcNIkJW//aMLGS5ofalliu0W281okAhZ7w Sknnx+umoprCAV9ljn/HZbQnseXPXKlZWUxiwfEZD2fcBI6+60HK86zVSEvrYxNs COZRhpj/bwvOt5LtNj7dcV6cbbBvJJIEJSNazXHscds2zUh79fidzkjZ/Z0Hbo7D sr7SM80STaURGFPTLoD41z4TY3V2GH8JUbWG9+I4fBjmSDyX+tQKKJhH886MRSSW ZQ0pY1uhwF8QBMlp3t87pZ2gbdjMr40PSYJGU+Xqsb/khq7xOWnP1CiIkVUHLF2L n/hm6VF6ifwFstFhOBc8nTcz7kGqzKvlQssFpf+DAIl/b7mZ3AKHVIJxTpZ1hcis BqQdeNcVEcNCRZWFzrG5hCs0b7xtaJrI30RPSMsQP2IcaX+DNyg= =xLSS -----END PGP SIGNATURE----- Merge tag 'x86_cpu_for_v6.1_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 cpu updates from Borislav Petkov: - Print the CPU number at segfault time. The number printed is not always accurate (preemption is enabled at that time) but the print string contains "likely" and after a lot of back'n'forth on this, this was the consensus that was reached. See thread at [1]. - After a *lot* of testing and polishing, finally the clear_user() improvements to inline REP; STOSB by default Link: https://lore.kernel.org/r/5d62c1d0-7425-d5bb-ecb5-1dc3b4d7d245@intel.com [1] * tag 'x86_cpu_for_v6.1_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/mm: Print likely CPU at segfault time x86/clear_user: Make it faster |
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Linus Torvalds
|
ba94a7a900 |
- Improve the documentation of a couple of SGX functions handling
backing storage -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmM77w8ACgkQEsHwGGHe VUq8uhAAifAom4dzMQ0zsLP1nPY9Y7jqNdMvR1f4XcnWVQ5Ipvlkooy+m6wZr4Zd Yy5HT9fvlFNcZzH8V0vy/8Kf86mT7K6NUalvcBJhiZUkSiFaDrzTgEi7+Znqw402 PVe/MiaUTfK1xokYIdzMmibsVh7SrL/8U4r4YWV0mQUYaGu0Fh7I+474Hd+4zH5F 12sfq0aw/IyCj+XrvVCIkvdus416wmdgs5KSgDqvfTRAm44rrLaz6xfT0ONjAv7g Pzs4eRgxOgxDJRpumoAw+UGC23FWDfKIvZOLiczrFdBHZMmFPYkOK2wrICacHZx0 I/DpwPk4sHKFFKjdXAqHDtLPwXp1D0xRN1Nw4UO5uSuj1XzjgPvBFjZ+zjM3EZMe OjzUYC1Qt2OrCYEXAot9tb9e0jqrg2hD9nCXrVszlXMbOyKX6l8BURf+2uzsXvq0 tAdfWl3awn6OpX3MxHwxuSq70BS8+KgizAgkHbimyJnPcPgFWa9b7fwp/iYbJF2U g6vMUyK0r3pomfmXFed+QCZ7CD1tGGharLoa2/aQxshcffPrhG9CN6As769oxt1Z m4I17yi8YViEQyAyvJ5GxpCJykVByZUsbjUnE4uDHBrQRmeN5D2SMcYvYF7J2AVV up81qj/TOsWEqnP/h1B6K1rz700P/tQK/ebk4uRdacN/+9JyxPo= =lezL -----END PGP SIGNATURE----- Merge tag 'x86_sgx_for_v6.1_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 SGX update from Borislav Petkov: - Improve the documentation of a couple of SGX functions handling backing storage * tag 'x86_sgx_for_v6.1_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/sgx: Improve comments for sgx_encl_lookup/alloc_backing() |
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Linus Torvalds
|
f8475a6749 |
- Cleanup x86/rtc.c and delete duplicated functionality in favor of
using the respective functionality from the RTC library -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmM77hwACgkQEsHwGGHe VUr0MBAAto17sVeaQUcJ9bw6qNu/IWwCt35X+dPXxXDANOxzZUdN+EEyEVcxIP45 f9nL3IiMPXPBWCyLqVbxAHi5z1FUc8NC3EJdMDQuCvZ4/OXyt1jyoRZ1V7NOUHYm EJBS52GJJOZk0DCmv7baSrGZ0d5qytMPmMlg7Phs8uaHzzL4/PRKDQvWWkYw9eoA fqEVVrHXi9D18PDvFCwAA83jbDrtLk52KzLrqW57jx6+V1CdOO+GFytNNOgYvwef FFRRo/BynSEONQNSX3RiDQ7NkBhgdpOaE9RglNyeHk0VctAiawkH0yEjyz2zOsyQ PAe8KBpnzUW49PMUBYKbOTLaOa73OYhdTEbeuV2cntE1OrH35sCH7scKIjJXyAer FFhz8nDkT36wXYtzHMgioE7Q8vUO04D3IGRAA3CADmX5BeIhgLlU7KDXoDVdJfAP aJUVojCFM0CI3ASmZhQbwEH+otycrcIs6bhkq/X+qQmcnTD9Q+7GqU+WdSPfHTbg 29Q+gn4IY/WWqdIgCH5i+XV0PnROcWNtb8YsgkN5GRyGV9AIRhNut20CREdBB6vG HVsWjimVJXbA6ysG4TNxcBENALaXYNyqICkgo/r0G1lOp90CseuOKhJI4JbZx+IF VuPyKKvk3r86sP1OkmFn46i52kyxl4OTPwFFYFpHOkfEczm4/tU= =9t5p -----END PGP SIGNATURE----- Merge tag 'x86_timers_for_v6.1_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 RTC cleanups from Borislav Petkov: - Cleanup x86/rtc.c and delete duplicated functionality in favor of using the respective functionality from the RTC library * tag 'x86_timers_for_v6.1_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/rtc: Rename mach_set_rtc_mmss() to mach_set_cmos_time() x86/rtc: Rewrite & simplify mach_get_cmos_time() by deleting duplicated functionality |
||
|
Linus Torvalds
|
3339914a58 |
- Get TSC and CPU frequency from CPUID leaf 0x40000010 when the kernel
is running as a guest on the ACRN hypervisor
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Merge tag 'x86_platform_for_v6.1_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 platform update from Borislav Petkov:
"A single x86/platform improvement when the kernel is running as an
ACRN guest:
- Get TSC and CPU frequency from CPUID leaf 0x40000010 when the
kernel is running as a guest on the ACRN hypervisor"
* tag 'x86_platform_for_v6.1_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/acrn: Set up timekeeping
|
||
|
Linus Torvalds
|
bf7676251b |
- Add support for Skylake-S CPUs to ie31200_edac
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||
|
Linus Torvalds
|
d0989d01c6 |
hardening updates for v6.1-rc1
Various fixes across several hardening areas:
- loadpin: Fix verity target enforcement (Matthias Kaehlcke).
- zero-call-used-regs: Add missing clobbers in paravirt (Bill Wendling).
- CFI: clean up sparc function pointer type mismatches (Bart Van Assche).
- Clang: Adjust compiler flag detection for various Clang changes (Sami
Tolvanen, Kees Cook).
- fortify: Fix warnings in arch-specific code in sh, ARM, and xen.
Improvements to existing features:
- testing: improve overflow KUnit test, introduce fortify KUnit test,
add more coverage to LKDTM tests (Bart Van Assche, Kees Cook).
- overflow: Relax overflow type checking for wider utility.
New features:
- string: Introduce strtomem() and strtomem_pad() to fill a gap in
strncpy() replacement needs.
- um: Enable FORTIFY_SOURCE support.
- fortify: Enable run-time struct member memcpy() overflow warning.
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Merge tag 'hardening-v6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull kernel hardening updates from Kees Cook:
"Most of the collected changes here are fixes across the tree for
various hardening features (details noted below).
The most notable new feature here is the addition of the memcpy()
overflow warning (under CONFIG_FORTIFY_SOURCE), which is the next step
on the path to killing the common class of "trivially detectable"
buffer overflow conditions (i.e. on arrays with sizes known at compile
time) that have resulted in many exploitable vulnerabilities over the
years (e.g. BleedingTooth).
This feature is expected to still have some undiscovered false
positives. It's been in -next for a full development cycle and all the
reported false positives have been fixed in their respective trees.
All the known-bad code patterns we could find with Coccinelle are also
either fixed in their respective trees or in flight.
The commit message in commit
|
||
|
Linus Torvalds
|
865dad2022 |
kcfi updates for v6.1-rc1
This replaces the prior support for Clang's standard Control Flow
Integrity (CFI) instrumentation, which has required a lot of special
conditions (e.g. LTO) and work-arounds. The current implementation
("Kernel CFI") is specific to C, directly designed for the Linux kernel,
and takes advantage of architectural features like x86's IBT. This
series retains arm64 support and adds x86 support. Additional "generic"
architectural support is expected soon:
https://github.com/samitolvanen/llvm-project/commits/kcfi_generic
- treewide: Remove old CFI support details
- arm64: Replace Clang CFI support with Clang KCFI support
- x86: Introduce Clang KCFI support
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Merge tag 'kcfi-v6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull kcfi updates from Kees Cook:
"This replaces the prior support for Clang's standard Control Flow
Integrity (CFI) instrumentation, which has required a lot of special
conditions (e.g. LTO) and work-arounds.
The new implementation ("Kernel CFI") is specific to C, directly
designed for the Linux kernel, and takes advantage of architectural
features like x86's IBT. This series retains arm64 support and adds
x86 support.
GCC support is expected in the future[1], and additional "generic"
architectural support is expected soon[2].
Summary:
- treewide: Remove old CFI support details
- arm64: Replace Clang CFI support with Clang KCFI support
- x86: Introduce Clang KCFI support"
Link: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107048 [1]
Link: https://github.com/samitolvanen/llvm-project/commits/kcfi_generic [2]
* tag 'kcfi-v6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: (22 commits)
x86: Add support for CONFIG_CFI_CLANG
x86/purgatory: Disable CFI
x86: Add types to indirectly called assembly functions
x86/tools/relocs: Ignore __kcfi_typeid_ relocations
kallsyms: Drop CONFIG_CFI_CLANG workarounds
objtool: Disable CFI warnings
objtool: Preserve special st_shndx indexes in elf_update_symbol
treewide: Drop __cficanonical
treewide: Drop WARN_ON_FUNCTION_MISMATCH
treewide: Drop function_nocfi
init: Drop __nocfi from __init
arm64: Drop unneeded __nocfi attributes
arm64: Add CFI error handling
arm64: Add types to indirect called assembly functions
psci: Fix the function type for psci_initcall_t
lkdtm: Emit an indirect call for CFI tests
cfi: Add type helper macros
cfi: Switch to -fsanitize=kcfi
cfi: Drop __CFI_ADDRESSABLE
cfi: Remove CONFIG_CFI_CLANG_SHADOW
...
|
||
|
Linus Torvalds
|
8aebac8293 |
Rust introduction for v6.1-rc1
The initial support of Rust-for-Linux comes in roughly 4 areas: - Kernel internals (kallsyms expansion for Rust symbols, %pA format) - Kbuild infrastructure (Rust build rules and support scripts) - Rust crates and bindings for initial minimum viable build - Rust kernel documentation and samples Rust support has been in linux-next for a year and a half now, and the short log doesn't do justice to the number of people who have contributed both to the Linux kernel side but also to the upstream Rust side to support the kernel's needs. Thanks to these 173 people, and many more, who have been involved in all kinds of ways: Miguel Ojeda, Wedson Almeida Filho, Alex Gaynor, Boqun Feng, Gary Guo, Björn Roy Baron, Andreas Hindborg, Adam Bratschi-Kaye, Benno Lossin, Maciej Falkowski, Finn Behrens, Sven Van Asbroeck, Asahi Lina, FUJITA Tomonori, John Baublitz, Wei Liu, Geoffrey Thomas, Philip Herron, Arthur Cohen, David Faust, Antoni Boucher, Philip Li, Yujie Liu, Jonathan Corbet, Greg Kroah-Hartman, Paul E. McKenney, Josh Triplett, Kent Overstreet, David Gow, Alice Ryhl, Robin Randhawa, Kees Cook, Nick Desaulniers, Matthew Wilcox, Linus Walleij, Joe Perches, Michael Ellerman, Petr Mladek, Masahiro Yamada, Arnaldo Carvalho de Melo, Andrii Nakryiko, Konstantin Shelekhin, Rasmus Villemoes, Konstantin Ryabitsev, Stephen Rothwell, Andy Shevchenko, Sergey Senozhatsky, John Paul Adrian Glaubitz, David Laight, Nathan Chancellor, Jonathan Cameron, Daniel Latypov, Shuah Khan, Brendan Higgins, Julia Lawall, Laurent Pinchart, Geert Uytterhoeven, Akira Yokosawa, Pavel Machek, David S. Miller, John Hawley, James Bottomley, Arnd Bergmann, Christian Brauner, Dan Robertson, Nicholas Piggin, Zhouyi Zhou, Elena Zannoni, Jose E. Marchesi, Leon Romanovsky, Will Deacon, Richard Weinberger, Randy Dunlap, Paolo Bonzini, Roland Dreier, Mark Brown, Sasha Levin, Ted Ts'o, Steven Rostedt, Jarkko Sakkinen, Michal Kubecek, Marco Elver, Al Viro, Keith Busch, Johannes Berg, Jan Kara, David Sterba, Connor Kuehl, Andy Lutomirski, Andrew Lunn, Alexandre Belloni, Peter Zijlstra, Russell King, Eric W. Biederman, Willy Tarreau, Christoph Hellwig, Emilio Cobos Álvarez, Christian Poveda, Mark Rousskov, John Ericson, TennyZhuang, Xuanwo, Daniel Paoliello, Manish Goregaokar, comex, Josh Stone, Stephan Sokolow, Philipp Krones, Guillaume Gomez, Joshua Nelson, Mats Larsen, Marc Poulhiès, Samantha Miller, Esteban Blanc, Martin Schmidt, Martin Rodriguez Reboredo, Daniel Xu, Viresh Kumar, Bartosz Golaszewski, Vegard Nossum, Milan Landaverde, Dariusz Sosnowski, Yuki Okushi, Matthew Bakhtiari, Wu XiangCheng, Tiago Lam, Boris-Chengbiao Zhou, Sumera Priyadarsini, Viktor Garske, Niklas Mohrin, Nándor István Krácser, Morgan Bartlett, Miguel Cano, Léo Lanteri Thauvin, Julian Merkle, Andreas Reindl, Jiapeng Chong, Fox Chen, Douglas Su, Antonio Terceiro, SeongJae Park, Sergio González Collado, Ngo Iok Ui (Wu Yu Wei), Joshua Abraham, Milan, Daniel Kolsoi, ahomescu, Manas, Luis Gerhorst, Li Hongyu, Philipp Gesang, Russell Currey, Jalil David Salamé Messina, Jon Olson, Raghvender, Angelos, Kaviraj Kanagaraj, Paul Römer, Sladyn Nunes, Mauro Baladés, Hsiang-Cheng Yang, Abhik Jain, Hongyu Li, Sean Nash, Yuheng Su, Peng Hao, Anhad Singh, Roel Kluin, Sara Saa, Geert Stappers, Garrett LeSage, IFo Hancroft, and Linus Torvalds. -----BEGIN PGP SIGNATURE----- iQJKBAABCgA0FiEEpcP2jyKd1g9yPm4TiXL039xtwCYFAmM4WcIWHGtlZXNjb29r QGNocm9taXVtLm9yZwAKCRCJcvTf3G3AJlGrD/93HbmxjNi/hwdWF5UdWV1/W0kJ bSTh9JsNtN9atQGEUwxePBjrtxHE75lxSL0RJ+sWvaJ7vR3iv2qys+cEgU0ePrgX INZ3bvHAGgvPG1b0R6VxmakksHq1BdCDbCT3Ft5lSNxB0uQBi95KgjtR0lCH/NUl eoZnGJ0ZbKs5KpbzFqOjM2gmJ51geZppnfNFmbKOb3lSUpPQqhZLPDCzweE57GNo e2vcMoY4daVaSUxmo01TSEphrM5IjDxp5rs09+aeovfmpbeoiz33siyGiAxyM7CI +Ybxl+bBnyqXLadjbs9VvvtYzASFZgmrQdwIQbY8j/sqsw34jmZarOwa5iUVmo+Q 2w1CDDNLMG3XpI/PdnUklFRIJg1uYCM+OXgZY2MFFqzbjoik/zFv2qFWTp1F5+XV DdLxoN9quBPDSVDFQjAZPsyCD/pSRfiJYh9s7BdlhUPL6rk9uLIgZyZuPqy3kWXn 2Z02lWJpiHUtTaICdUDyNPFzTggDHEfY2DvmuedXpsyhlMkCdtFS5zoo/evl8pb6 xUV7qdfpjyLyTLmLWjYEVRO6DJJuFQWMK5Qpqn6O0y3wch3XV+At5QDk2TE2WMvB cYwd9nCqcMs7J0HrdoDmtLwew1jrLd1xefqDgD0zd6B/+Dk9W4gFD69Stmtarg7d KGRvH0wnL0keMxy31w== =zz09 -----END PGP SIGNATURE----- Merge tag 'rust-v6.1-rc1' of https://github.com/Rust-for-Linux/linux Pull Rust introductory support from Kees Cook: "The tree has a recent base, but has fundamentally been in linux-next for a year and a half[1]. It's been updated based on feedback from the Kernel Maintainer's Summit, and to gain recent Reviewed-by: tags. Miguel is the primary maintainer, with me helping where needed/wanted. Our plan is for the tree to switch to the standard non-rebasing practice once this initial infrastructure series lands. The contents are the absolute minimum to get Rust code building in the kernel, with many more interfaces[2] (and drivers - NVMe[3], 9p[4], M1 GPU[5]) on the way. The initial support of Rust-for-Linux comes in roughly 4 areas: - Kernel internals (kallsyms expansion for Rust symbols, %pA format) - Kbuild infrastructure (Rust build rules and support scripts) - Rust crates and bindings for initial minimum viable build - Rust kernel documentation and samples Rust support has been in linux-next for a year and a half now, and the short log doesn't do justice to the number of people who have contributed both to the Linux kernel side but also to the upstream Rust side to support the kernel's needs. Thanks to these 173 people, and many more, who have been involved in all kinds of ways: Miguel Ojeda, Wedson Almeida Filho, Alex Gaynor, Boqun Feng, Gary Guo, Björn Roy Baron, Andreas Hindborg, Adam Bratschi-Kaye, Benno Lossin, Maciej Falkowski, Finn Behrens, Sven Van Asbroeck, Asahi Lina, FUJITA Tomonori, John Baublitz, Wei Liu, Geoffrey Thomas, Philip Herron, Arthur Cohen, David Faust, Antoni Boucher, Philip Li, Yujie Liu, Jonathan Corbet, Greg Kroah-Hartman, Paul E. McKenney, Josh Triplett, Kent Overstreet, David Gow, Alice Ryhl, Robin Randhawa, Kees Cook, Nick Desaulniers, Matthew Wilcox, Linus Walleij, Joe Perches, Michael Ellerman, Petr Mladek, Masahiro Yamada, Arnaldo Carvalho de Melo, Andrii Nakryiko, Konstantin Shelekhin, Rasmus Villemoes, Konstantin Ryabitsev, Stephen Rothwell, Andy Shevchenko, Sergey Senozhatsky, John Paul Adrian Glaubitz, David Laight, Nathan Chancellor, Jonathan Cameron, Daniel Latypov, Shuah Khan, Brendan Higgins, Julia Lawall, Laurent Pinchart, Geert Uytterhoeven, Akira Yokosawa, Pavel Machek, David S. Miller, John Hawley, James Bottomley, Arnd Bergmann, Christian Brauner, Dan Robertson, Nicholas Piggin, Zhouyi Zhou, Elena Zannoni, Jose E. Marchesi, Leon Romanovsky, Will Deacon, Richard Weinberger, Randy Dunlap, Paolo Bonzini, Roland Dreier, Mark Brown, Sasha Levin, Ted Ts'o, Steven Rostedt, Jarkko Sakkinen, Michal Kubecek, Marco Elver, Al Viro, Keith Busch, Johannes Berg, Jan Kara, David Sterba, Connor Kuehl, Andy Lutomirski, Andrew Lunn, Alexandre Belloni, Peter Zijlstra, Russell King, Eric W. Biederman, Willy Tarreau, Christoph Hellwig, Emilio Cobos Álvarez, Christian Poveda, Mark Rousskov, John Ericson, TennyZhuang, Xuanwo, Daniel Paoliello, Manish Goregaokar, comex, Josh Stone, Stephan Sokolow, Philipp Krones, Guillaume Gomez, Joshua Nelson, Mats Larsen, Marc Poulhiès, Samantha Miller, Esteban Blanc, Martin Schmidt, Martin Rodriguez Reboredo, Daniel Xu, Viresh Kumar, Bartosz Golaszewski, Vegard Nossum, Milan Landaverde, Dariusz Sosnowski, Yuki Okushi, Matthew Bakhtiari, Wu XiangCheng, Tiago Lam, Boris-Chengbiao Zhou, Sumera Priyadarsini, Viktor Garske, Niklas Mohrin, Nándor István Krácser, Morgan Bartlett, Miguel Cano, Léo Lanteri Thauvin, Julian Merkle, Andreas Reindl, Jiapeng Chong, Fox Chen, Douglas Su, Antonio Terceiro, SeongJae Park, Sergio González Collado, Ngo Iok Ui (Wu Yu Wei), Joshua Abraham, Milan, Daniel Kolsoi, ahomescu, Manas, Luis Gerhorst, Li Hongyu, Philipp Gesang, Russell Currey, Jalil David Salamé Messina, Jon Olson, Raghvender, Angelos, Kaviraj Kanagaraj, Paul Römer, Sladyn Nunes, Mauro Baladés, Hsiang-Cheng Yang, Abhik Jain, Hongyu Li, Sean Nash, Yuheng Su, Peng Hao, Anhad Singh, Roel Kluin, Sara Saa, Geert Stappers, Garrett LeSage, IFo Hancroft, and Linus Torvalds" Link: https://lwn.net/Articles/849849/ [1] Link: https://github.com/Rust-for-Linux/linux/commits/rust [2] Link: |
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Alexander Potapenko
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ce732a7520 |
x86: kmsan: handle CPU entry area
Among other data, CPU entry area holds exception stacks, so addresses from this area can be passed to kmsan_get_metadata(). This previously led to kmsan_get_metadata() returning NULL, which in turn resulted in a warning that triggered further attempts to call kmsan_get_metadata() in the exception context, which quickly exhausted the exception stack. This patch allocates shadow and origin for the CPU entry area on x86 and introduces arch_kmsan_get_meta_or_null(), which performs arch-specific metadata mapping. Link: https://lkml.kernel.org/r/20220928123219.1101883-1-glider@google.com Signed-off-by: Alexander Potapenko <glider@google.com> Fixes: 21d723a7c1409 ("kmsan: add KMSAN runtime core") Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Andrey Konovalov <andreyknvl@gmail.com> Cc: Andrey Konovalov <andreyknvl@google.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Borislav Petkov <bp@alien8.de> Cc: Christoph Hellwig <hch@lst.de> Cc: Christoph Lameter <cl@linux.com> Cc: David Rientjes <rientjes@google.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Eric Biggers <ebiggers@google.com> Cc: Eric Biggers <ebiggers@kernel.org> Cc: Eric Dumazet <edumazet@google.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: Ilya Leoshkevich <iii@linux.ibm.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jens Axboe <axboe@kernel.dk> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Kees Cook <keescook@chromium.org> Cc: Marco Elver <elver@google.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Michael S. Tsirkin <mst@redhat.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Petr Mladek <pmladek@suse.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Vegard Nossum <vegard.nossum@oracle.com> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Alexander Potapenko
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4ca8cc8d1b |
x86: kmsan: enable KMSAN builds for x86
Make KMSAN usable by adding the necessary Kconfig bits. Also declare x86-specific functions checking address validity in arch/x86/include/asm/kmsan.h. Link: https://lkml.kernel.org/r/20220915150417.722975-44-glider@google.com Signed-off-by: Alexander Potapenko <glider@google.com> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Andrey Konovalov <andreyknvl@gmail.com> Cc: Andrey Konovalov <andreyknvl@google.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Borislav Petkov <bp@alien8.de> Cc: Christoph Hellwig <hch@lst.de> Cc: Christoph Lameter <cl@linux.com> Cc: David Rientjes <rientjes@google.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Eric Biggers <ebiggers@google.com> Cc: Eric Biggers <ebiggers@kernel.org> Cc: Eric Dumazet <edumazet@google.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: Ilya Leoshkevich <iii@linux.ibm.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jens Axboe <axboe@kernel.dk> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Kees Cook <keescook@chromium.org> Cc: Marco Elver <elver@google.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Michael S. Tsirkin <mst@redhat.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Petr Mladek <pmladek@suse.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Vegard Nossum <vegard.nossum@oracle.com> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Alexander Potapenko
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37ad4ee836 |
x86: kmsan: don't instrument stack walking functions
Upon function exit, KMSAN marks local variables as uninitialized. Further function calls may result in the compiler creating the stack frame where these local variables resided. This results in frame pointers being marked as uninitialized data, which is normally correct, because they are not stack-allocated. However stack unwinding functions are supposed to read and dereference the frame pointers, in which case KMSAN might be reporting uses of uninitialized values. To work around that, we mark update_stack_state(), unwind_next_frame() and show_trace_log_lvl() with __no_kmsan_checks, preventing all KMSAN reports inside those functions and making them return initialized values. Link: https://lkml.kernel.org/r/20220915150417.722975-40-glider@google.com Signed-off-by: Alexander Potapenko <glider@google.com> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Andrey Konovalov <andreyknvl@gmail.com> Cc: Andrey Konovalov <andreyknvl@google.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Borislav Petkov <bp@alien8.de> Cc: Christoph Hellwig <hch@lst.de> Cc: Christoph Lameter <cl@linux.com> Cc: David Rientjes <rientjes@google.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Eric Biggers <ebiggers@google.com> Cc: Eric Biggers <ebiggers@kernel.org> Cc: Eric Dumazet <edumazet@google.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: Ilya Leoshkevich <iii@linux.ibm.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jens Axboe <axboe@kernel.dk> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Kees Cook <keescook@chromium.org> Cc: Marco Elver <elver@google.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Michael S. Tsirkin <mst@redhat.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Petr Mladek <pmladek@suse.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Vegard Nossum <vegard.nossum@oracle.com> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Alexander Potapenko
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7cf8f44a5a |
x86: fs: kmsan: disable CONFIG_DCACHE_WORD_ACCESS
dentry_string_cmp() calls read_word_at_a_time(), which might read uninitialized bytes to optimize string comparisons. Disabling CONFIG_DCACHE_WORD_ACCESS should prohibit this optimization, as well as (probably) similar ones. Link: https://lkml.kernel.org/r/20220915150417.722975-39-glider@google.com Signed-off-by: Alexander Potapenko <glider@google.com> Suggested-by: Andrey Konovalov <andreyknvl@gmail.com> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Andrey Konovalov <andreyknvl@google.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Borislav Petkov <bp@alien8.de> Cc: Christoph Hellwig <hch@lst.de> Cc: Christoph Lameter <cl@linux.com> Cc: David Rientjes <rientjes@google.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Eric Biggers <ebiggers@google.com> Cc: Eric Biggers <ebiggers@kernel.org> Cc: Eric Dumazet <edumazet@google.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: Ilya Leoshkevich <iii@linux.ibm.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jens Axboe <axboe@kernel.dk> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Kees Cook <keescook@chromium.org> Cc: Marco Elver <elver@google.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Michael S. Tsirkin <mst@redhat.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Petr Mladek <pmladek@suse.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Vegard Nossum <vegard.nossum@oracle.com> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |