Merge tag 'random-6.12-rc1-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/crng/random

Pull random number generator updates from Jason Donenfeld:
"Originally I'd planned on sending each

Merge tag 'random-6.12-rc1-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/crng/random

Pull random number generator updates from Jason Donenfeld:
"Originally I'd planned on sending each of the vDSO getrandom()
architecture ports to their respective arch trees. But as we started
to work on this, we found lots of interesting issues in the shared
code and infrastructure, the fixes for which the various archs needed
to base their work.

So in the end, this turned into a nice collaborative effort fixing up
issues and porting to 5 new architectures -- arm64, powerpc64,
powerpc32, s390x, and loongarch64 -- with everybody pitching in and
commenting on each other's code. It was a fun development cycle.

This contains:

- Numerous fixups to the vDSO selftest infrastructure, getting it
running successfully on more platforms, and fixing bugs in it.

- Additions to the vDSO getrandom & chacha selftests. Basically every
time manual review unearthed a bug in a revision of an arch patch,
or an ambiguity, the tests were augmented.

By the time the last arch was submitted for review, s390x, v1 of
the series was essentially fine right out of the gate.

- Fixes to the the generic C implementation of vDSO getrandom, to
build and run successfully on all archs, decoupling it from
assumptions we had (unintentionally) made on x86_64 that didn't
carry through to the other architectures.

- Port of vDSO getrandom to LoongArch64, from Xi Ruoyao and acked by
Huacai Chen.

- Port of vDSO getrandom to ARM64, from Adhemerval Zanella and acked
by Will Deacon.

- Port of vDSO getrandom to PowerPC, in both 32-bit and 64-bit
varieties, from Christophe Leroy and acked by Michael Ellerman.

- Port of vDSO getrandom to S390X from Heiko Carstens, the arch
maintainer.

While it'd be natural for there to be things to fix up over the course
of the development cycle, these patches got a decent amount of review
from a fairly diverse crew of folks on the mailing lists, and, for the
most part, they've been cooking in linux-next, which has been helpful
for ironing out build issues.

In terms of architectures, I think that mostly takes care of the
important 64-bit archs with hardware still being produced and running
production loads in settings where vDSO getrandom is likely to help.

Arguably there's still RISC-V left, and we'll see for 6.13 whether
they find it useful and submit a port"

* tag 'random-6.12-rc1-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/crng/random: (47 commits)
selftests: vDSO: check cpu caps before running chacha test
s390/vdso: Wire up getrandom() vdso implementation
s390/vdso: Move vdso symbol handling to separate header file
s390/vdso: Allow alternatives in vdso code
s390/module: Provide find_section() helper
s390/facility: Let test_facility() generate static branch if possible
s390/alternatives: Remove ALT_FACILITY_EARLY
s390/facility: Disable compile time optimization for decompressor code
selftests: vDSO: fix vdso_config for s390
selftests: vDSO: fix ELF hash table entry size for s390x
powerpc/vdso: Wire up getrandom() vDSO implementation on VDSO64
powerpc/vdso: Wire up getrandom() vDSO implementation on VDSO32
powerpc/vdso: Refactor CFLAGS for CVDSO build
powerpc/vdso32: Add crtsavres
mm: Define VM_DROPPABLE for powerpc/32
powerpc/vdso: Fix VDSO data access when running in a non-root time namespace
selftests: vDSO: don't include generated headers for chacha test
arm64: vDSO: Wire up getrandom() vDSO implementation
arm64: alternative: make alternative_has_cap_likely() VDSO compatible
selftests: vDSO: also test counter in vdso_test_chacha
...

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arm64: vDSO: Wire up getrandom() vDSO implementation

Hook up the generic vDSO implementation to the aarch64 vDSO data page.
The _vdso_rng_data required data is placed within the _vdso_data vvar
page

arm64: vDSO: Wire up getrandom() vDSO implementation

Hook up the generic vDSO implementation to the aarch64 vDSO data page.
The _vdso_rng_data required data is placed within the _vdso_data vvar
page, by using a offset larger than the vdso_data.

The vDSO function requires a ChaCha20 implementation that does not write
to the stack, and that can do an entire ChaCha20 permutation. The one
provided uses NEON on the permute operation, with a fallback to the
syscall for chips that do not support AdvSIMD.

This also passes the vdso_test_chacha test along with
vdso_test_getrandom. The vdso_test_getrandom bench-single result on
Neoverse-N1 shows:

vdso: 25000000 times in 0.783884250 seconds
libc: 25000000 times in 8.780275399 seconds
syscall: 25000000 times in 8.786581518 seconds

A small fixup to arch/arm64/include/asm/mman.h was required to avoid
pulling kernel code into the vDSO, similar to what's already done in
arch/arm64/include/asm/rwonce.h.

Signed-off-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Acked-by: Will Deacon <will@kernel.org>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>

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Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 updates from Will Deacon:
"The highlights are support for Arm's "Permission Overlay Extension"
u

Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 updates from Will Deacon:
"The highlights are support for Arm's "Permission Overlay Extension"
using memory protection keys, support for running as a protected guest
on Android as well as perf support for a bunch of new interconnect
PMUs.

Summary:

ACPI:
- Enable PMCG erratum workaround for HiSilicon HIP10 and 11
platforms.
- Ensure arm64-specific IORT header is covered by MAINTAINERS.

CPU Errata:
- Enable workaround for hardware access/dirty issue on Ampere-1A
cores.

Memory management:
- Define PHYSMEM_END to fix a crash in the amdgpu driver.
- Avoid tripping over invalid kernel mappings on the kexec() path.
- Userspace support for the Permission Overlay Extension (POE) using
protection keys.

Perf and PMUs:
- Add support for the "fixed instruction counter" extension in the
CPU PMU architecture.
- Extend and fix the event encodings for Apple's M1 CPU PMU.
- Allow LSM hooks to decide on SPE permissions for physical
profiling.
- Add support for the CMN S3 and NI-700 PMUs.

Confidential Computing:
- Add support for booting an arm64 kernel as a protected guest under
Android's "Protected KVM" (pKVM) hypervisor.

Selftests:
- Fix vector length issues in the SVE/SME sigreturn tests
- Fix build warning in the ptrace tests.

Timers:
- Add support for PR_{G,S}ET_TSC so that 'rr' can deal with
non-determinism arising from the architected counter.

Miscellaneous:
- Rework our IPI-based CPU stopping code to try NMIs if regular IPIs
don't succeed.
- Minor fixes and cleanups"

* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (94 commits)
perf: arm-ni: Fix an NULL vs IS_ERR() bug
arm64: hibernate: Fix warning for cast from restricted gfp_t
arm64: esr: Define ESR_ELx_EC_* constants as UL
arm64: pkeys: remove redundant WARN
perf: arm_pmuv3: Use BR_RETIRED for HW branch event if enabled
MAINTAINERS: List Arm interconnect PMUs as supported
perf: Add driver for Arm NI-700 interconnect PMU
dt-bindings/perf: Add Arm NI-700 PMU
perf/arm-cmn: Improve format attr printing
perf/arm-cmn: Clean up unnecessary NUMA_NO_NODE check
arm64/mm: use lm_alias() with addresses passed to memblock_free()
mm: arm64: document why pte is not advanced in contpte_ptep_set_access_flags()
arm64: Expose the end of the linear map in PHYSMEM_END
arm64: trans_pgd: mark PTEs entries as valid to avoid dead kexec()
arm64/mm: Delete __init region from memblock.reserved
perf/arm-cmn: Support CMN S3
dt-bindings: perf: arm-cmn: Add CMN S3
perf/arm-cmn: Refactor DTC PMU register access
perf/arm-cmn: Make cycle counts less surprising
perf/arm-cmn: Improve build-time assertion
...

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Merge branch 'for-next/poe' into for-next/core

* for-next/poe: (31 commits)
arm64: pkeys: remove redundant WARN
kselftest/arm64: Add test case for POR_EL0 signal frame records
kselftest/arm64:

Merge branch 'for-next/poe' into for-next/core

* for-next/poe: (31 commits)
arm64: pkeys: remove redundant WARN
kselftest/arm64: Add test case for POR_EL0 signal frame records
kselftest/arm64: parse POE_MAGIC in a signal frame
kselftest/arm64: add HWCAP test for FEAT_S1POE
selftests: mm: make protection_keys test work on arm64
selftests: mm: move fpregs printing
kselftest/arm64: move get_header()
arm64: add Permission Overlay Extension Kconfig
arm64: enable PKEY support for CPUs with S1POE
arm64: enable POE and PIE to coexist
arm64/ptrace: add support for FEAT_POE
arm64: add POE signal support
arm64: implement PKEYS support
arm64: add pte_access_permitted_no_overlay()
arm64: handle PKEY/POE faults
arm64: mask out POIndex when modifying a PTE
arm64: convert protection key into vm_flags and pgprot values
arm64: add POIndex defines
arm64: re-order MTE VM_ flags
arm64: enable the Permission Overlay Extension for EL0
...

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arm64: convert protection key into vm_flags and pgprot values

Modify arch_calc_vm_prot_bits() and vm_get_page_prot() such that the pkey
value is set in the vm_flags and then into the pgprot value.

arm64: convert protection key into vm_flags and pgprot values

Modify arch_calc_vm_prot_bits() and vm_get_page_prot() such that the pkey
value is set in the vm_flags and then into the pgprot value.

Signed-off-by: Joey Gouly <joey.gouly@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/r/20240822151113.1479789-15-joey.gouly@arm.com
Signed-off-by: Will Deacon <will@kernel.org>

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Revert "arm64: mm: add support for WXN memory translation attribute"

This reverts commit 50e3ed0f93f4f62ed2aa83de5db6cb84ecdd5707.

The SCTLR_EL1.WXN control forces execute-never when a page has wri

Revert "arm64: mm: add support for WXN memory translation attribute"

This reverts commit 50e3ed0f93f4f62ed2aa83de5db6cb84ecdd5707.

The SCTLR_EL1.WXN control forces execute-never when a page has write
permissions. While the idea of hardening such write/exec combinations is
good, with permissions indirection enabled (FEAT_PIE) this control
becomes RES0. FEAT_PIE introduces a slightly different form of WXN which
only has an effect when the base permission is RWX and the write is
toggled by the permission overlay (FEAT_POE, not yet supported by the
arm64 kernel). Revert the patch for now.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Link: https://lore.kernel.org/r/ZfGESD3a91lxH367@arm.com

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Merge branch 'for-next/stage1-lpa2' into for-next/core

* for-next/stage1-lpa2: (48 commits)
: Add support for LPA2 and WXN and stage 1
arm64/mm: Avoid ID mapping of kpti flag if it is no longer

Merge branch 'for-next/stage1-lpa2' into for-next/core

* for-next/stage1-lpa2: (48 commits)
: Add support for LPA2 and WXN and stage 1
arm64/mm: Avoid ID mapping of kpti flag if it is no longer needed
arm64/mm: Use generic __pud_free() helper in pud_free() implementation
arm64: gitignore: ignore relacheck
arm64: Use Signed/Unsigned enums for TGRAN{4,16,64} and VARange
arm64: mm: Make PUD folding check in set_pud() a runtime check
arm64: mm: add support for WXN memory translation attribute
mm: add arch hook to validate mmap() prot flags
arm64: defconfig: Enable LPA2 support
arm64: Enable 52-bit virtual addressing for 4k and 16k granule configs
arm64: kvm: avoid CONFIG_PGTABLE_LEVELS for runtime levels
arm64: ptdump: Deal with translation levels folded at runtime
arm64: ptdump: Disregard unaddressable VA space
arm64: mm: Add support for folding PUDs at runtime
arm64: kasan: Reduce minimum shadow alignment and enable 5 level paging
arm64: mm: Add 5 level paging support to fixmap and swapper handling
arm64: Enable LPA2 at boot if supported by the system
arm64: mm: add LPA2 and 5 level paging support to G-to-nG conversion
arm64: mm: Add definitions to support 5 levels of paging
arm64: mm: Add LPA2 support to phys<->pte conversion routines
arm64: mm: Wire up TCR.DS bit to PTE shareability fields
...

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arm64: mm: add support for WXN memory translation attribute

The AArch64 virtual memory system supports a global WXN control, which
can be enabled to make all writable mappings implicitly no-exec. Th

arm64: mm: add support for WXN memory translation attribute

The AArch64 virtual memory system supports a global WXN control, which
can be enabled to make all writable mappings implicitly no-exec. This is
a useful hardening feature, as it prevents mistakes in managing page
table permissions from being exploited to attack the system.

When enabled at EL1, the restrictions apply to both EL1 and EL0. EL1 is
completely under our control, and has been cleaned up to allow WXN to be
enabled from boot onwards. EL0 is not under our control, but given that
widely deployed security features such as selinux or PaX already limit
the ability of user space to create mappings that are writable and
executable at the same time, the impact of enabling this for EL0 is
expected to be limited. (For this reason, common user space libraries
that have a legitimate need for manipulating executable code already
carry fallbacks such as [0].)

If enabled at compile time, the feature can still be disabled at boot if
needed, by passing arm64.nowxn on the kernel command line.

[0] https://github.com/libffi/libffi/blob/master/src/closures.c#L440

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20240214122845.2033971-88-ardb+git@google.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

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Merge branch 'main' into zstd-linus

Merge branch 'main' into zstd-next

Merge drm/drm-next into drm-intel-gt-next

Daniele needs 84d4333c1e28 ("misc/mei: Add NULL check to component match
callback functions") in order to merge the DG2 HuC patches.

Signed-off-by: Tvrtko

Merge drm/drm-next into drm-intel-gt-next

Daniele needs 84d4333c1e28 ("misc/mei: Add NULL check to component match
callback functions") in order to merge the DG2 HuC patches.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>

show more ...

Merge part of branch 'for-next.instantiate' into for-next

Merge drm/drm-next into drm-intel-next

Sync up. In special to get the drm-intel-gt-next stuff.

Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

Merge branch 'next' into for-linus

Prepare input updates for 5.20 (or 6.0) merge window.

Merge drm/drm-next into drm-misc-next-fixes

Backmerging from drm/drm-next for the final fixes that will go
into v5.20.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>

Merge tag 'v5.19-rc5' into next

Merge with mainline to bring up the latest definition from MFD subsystem
needed for Mediatek keypad driver.

Merge tag 'asoc-fix-v5.19-rc3' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus

ASoC: Fixes for v5.19

A collection of fixes for v5.19, quite large but nothing major -

Merge tag 'asoc-fix-v5.19-rc3' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus

ASoC: Fixes for v5.19

A collection of fixes for v5.19, quite large but nothing major - a good
chunk of it is more stuff that was identified by mixer-test regarding
event generation.

show more ...

Merge drm/drm-next into drm-misc-next

Backmerging to get new regmap APIs of v5.19-rc1.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>

Merge branch 'topic/ctl-enhancements' into for-next

Pull ALSA control enhancement patches.
One is the faster lookup of control elements, and another is to
introduce the input data validation.

Signe

Merge branch 'topic/ctl-enhancements' into for-next

Pull ALSA control enhancement patches.
One is the faster lookup of control elements, and another is to
introduce the input data validation.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

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Merge tag 'kvm-riscv-fixes-5.19-1' of https://github.com/kvm-riscv/linux into HEAD

KVM/riscv fixes for 5.19, take #1

- Typo fix in arch/riscv/kvm/vmid.c

- Remove broken reference pattern from MAIN

Merge tag 'kvm-riscv-fixes-5.19-1' of https://github.com/kvm-riscv/linux into HEAD

KVM/riscv fixes for 5.19, take #1

- Typo fix in arch/riscv/kvm/vmid.c

- Remove broken reference pattern from MAINTAINERS entry

show more ...

Merge v5.19-rc1 into drm-misc-fixes

Let's kick-off the start of the 5.19 fix cycle

Signed-off-by: Maxime Ripard <maxime@cerno.tech>

Merge tag 'v5.19-rc1' into asoc-5.19

Linux 5.19-rc1

Merge tag 'mm-stable-2022-05-25' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull MM updates from Andrew Morton:
"Almost all of MM here. A few things are still getting finished off,

Merge tag 'mm-stable-2022-05-25' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull MM updates from Andrew Morton:
"Almost all of MM here. A few things are still getting finished off,
reviewed, etc.

- Yang Shi has improved the behaviour of khugepaged collapsing of
readonly file-backed transparent hugepages.

- Johannes Weiner has arranged for zswap memory use to be tracked and
managed on a per-cgroup basis.

- Munchun Song adds a /proc knob ("hugetlb_optimize_vmemmap") for
runtime enablement of the recent huge page vmemmap optimization
feature.

- Baolin Wang contributes a series to fix some issues around hugetlb
pagetable invalidation.

- Zhenwei Pi has fixed some interactions between hwpoisoned pages and
virtualization.

- Tong Tiangen has enabled the use of the presently x86-only
page_table_check debugging feature on arm64 and riscv.

- David Vernet has done some fixup work on the memcg selftests.

- Peter Xu has taught userfaultfd to handle write protection faults
against shmem- and hugetlbfs-backed files.

- More DAMON development from SeongJae Park - adding online tuning of
the feature and support for monitoring of fixed virtual address
ranges. Also easier discovery of which monitoring operations are
available.

- Nadav Amit has done some optimization of TLB flushing during
mprotect().

- Neil Brown continues to labor away at improving our swap-over-NFS
support.

- David Hildenbrand has some fixes to anon page COWing versus
get_user_pages().

- Peng Liu fixed some errors in the core hugetlb code.

- Joao Martins has reduced the amount of memory consumed by
device-dax's compound devmaps.

- Some cleanups of the arch-specific pagemap code from Anshuman
Khandual.

- Muchun Song has found and fixed some errors in the TLB flushing of
transparent hugepages.

- Roman Gushchin has done more work on the memcg selftests.

... and, of course, many smaller fixes and cleanups. Notably, the
customary million cleanup serieses from Miaohe Lin"

* tag 'mm-stable-2022-05-25' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (381 commits)
mm: kfence: use PAGE_ALIGNED helper
selftests: vm: add the "settings" file with timeout variable
selftests: vm: add "test_hmm.sh" to TEST_FILES
selftests: vm: check numa_available() before operating "merge_across_nodes" in ksm_tests
selftests: vm: add migration to the .gitignore
selftests/vm/pkeys: fix typo in comment
ksm: fix typo in comment
selftests: vm: add process_mrelease tests
Revert "mm/vmscan: never demote for memcg reclaim"
mm/kfence: print disabling or re-enabling message
include/trace/events/percpu.h: cleanup for "percpu: improve percpu_alloc_percpu event trace"
include/trace/events/mmflags.h: cleanup for "tracing: incorrect gfp_t conversion"
mm: fix a potential infinite loop in start_isolate_page_range()
MAINTAINERS: add Muchun as co-maintainer for HugeTLB
zram: fix Kconfig dependency warning
mm/shmem: fix shmem folio swapoff hang
cgroup: fix an error handling path in alloc_pagecache_max_30M()
mm: damon: use HPAGE_PMD_SIZE
tracing: incorrect isolate_mote_t cast in mm_vmscan_lru_isolate
nodemask.h: fix compilation error with GCC12
...

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arm64/mm: enable ARCH_HAS_VM_GET_PAGE_PROT

This defines and exports a platform specific custom vm_get_page_prot() via
subscribing ARCH_HAS_VM_GET_PAGE_PROT. It localizes arch_vm_get_page_prot()
and

arm64/mm: enable ARCH_HAS_VM_GET_PAGE_PROT

This defines and exports a platform specific custom vm_get_page_prot() via
subscribing ARCH_HAS_VM_GET_PAGE_PROT. It localizes arch_vm_get_page_prot()
and moves it near vm_get_page_prot().

Link: https://lkml.kernel.org/r/20220414062125.609297-4-anshuman.khandual@arm.com
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: David S. Miller <davem@davemloft.net>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Khalid Aziz <khalid.aziz@oracle.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

show more ...

Merge branch 'next' into for-linus

Prepare input updates for 5.12 merge window.