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arm64 fixes for 6.7-rc6

GIT PULL Merged Catalin Marinas 2 participants 2 messages Dec 15, 2023 – Dec 16, 2023

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Hi Linus,

Please pull the arm64 fixes below. Thanks.

The following changes since commit f5259997f3e8d6edfcc2daf5b2c0b34f074d7bc0:

arm64: Avoid enabling KPTI unnecessarily (2023-11-30 19:07:33 +0000)

are available in the Git repository at:

git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux tags/arm64-fixes

for you to fetch changes up to 3c0696076aad60a2f04c019761921954579e1b0e:

arm64: mm: Always make sw-dirty PTEs hw-dirty in pte_modify (2023-12-12 16:25:26 +0000)

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arm64 fixes:

- Arm CMN perf: fix the DTC allocation failure path which can end up erroneously clearing live counters

- arm64/mm: fix hugetlb handling of the dirty page state leading to a continuous fault loop in user on hardware without dirty bit management (DBM). That's caused by the dirty+writeable information not being properly preserved across a series of mprotect(PROT_NONE), mprotect(PROT_READ|PROT_WRITE)

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James Houghton (1):
arm64: mm: Always make sw-dirty PTEs hw-dirty in pte_modify

Robin Murphy (1):
perf/arm-cmn: Fail DTC counter allocation correctly

 arch/arm64/include/asm/pgtable.h | 6 ++++++
 drivers/perf/arm-cmn.c           | 2 +-
 2 files changed, 7 insertions(+), 1 deletion(-)
Signature · 1 line
Catalin