diff options
| author | Linus Torvalds | 2022-10-14 12:38:03 -0700 |
|---|---|---|
| committer | Linus Torvalds | 2022-10-14 12:38:03 -0700 |
| commit | 1df046ab1c6520911774911f8c710ca8e981305c (patch) | |
| tree | 6ce36362f860a15fecb85df729578dacdab30862 /arch/arm64/mm | |
| parent | 5e714bf1713b4b096d20ec75c13880b7086964bd (diff) | |
| parent | 0e5d5ae837c8ce04d2ddb874ec5f920118bd9d31 (diff) | |
Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Catalin Marinas:
- Cortex-A55 errata workaround (repeat TLBI)
- AMPERE1 added to the Spectre-BHB affected list
- MTE fix to avoid setting PG_mte_tagged if no tags have been touched
on a page
- Fixed typo in the SCTLR_EL1.SPINTMASK bit naming (the commit log has
other typos)
- perf: return value check in ali_drw_pmu_probe(),
ALIBABA_UNCORE_DRW_PMU dependency on ACPI
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: Add AMPERE1 to the Spectre-BHB affected list
arm64: mte: Avoid setting PG_mte_tagged if no tags cleared or restored
MAINTAINERS: rectify file entry in ALIBABA PMU DRIVER
drivers/perf: ALIBABA_UNCORE_DRW_PMU should depend on ACPI
drivers/perf: fix return value check in ali_drw_pmu_probe()
arm64: errata: Add Cortex-A55 to the repeat tlbi list
arm64/sysreg: Fix typo in SCTR_EL1.SPINTMASK
Diffstat (limited to 'arch/arm64/mm')
| -rw-r--r-- | arch/arm64/mm/mteswap.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/arch/arm64/mm/mteswap.c b/arch/arm64/mm/mteswap.c index 4334dec93bd4..bed803d8e158 100644 --- a/arch/arm64/mm/mteswap.c +++ b/arch/arm64/mm/mteswap.c @@ -53,7 +53,12 @@ bool mte_restore_tags(swp_entry_t entry, struct page *page) if (!tags) return false; - mte_restore_page_tags(page_address(page), tags); + /* + * Test PG_mte_tagged again in case it was racing with another + * set_pte_at(). + */ + if (!test_and_set_bit(PG_mte_tagged, &page->flags)) + mte_restore_page_tags(page_address(page), tags); return true; } |