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| author | Will Deacon <will@kernel.org> | 2022-12-06 11:04:47 +0000 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2022-12-06 11:04:47 +0000 |
| commit | f455fb65b4fcfcae29b4e8c44a46b23e3c8e893a (patch) | |
| tree | 387bb0278a789a59b5c3c075a47275181d499142 /arch/arm64/Kconfig | |
| parent | f6ffa4c8c177c0b52d1c849289b08178f6da0eea (diff) | |
| parent | 44ecda71fd8a70185c270f5914ac563827fe1d4c (diff) | |
| download | linux-f455fb65b4fcfcae29b4e8c44a46b23e3c8e893a.tar.bz2 | |
Merge branch 'for-next/errata' into for-next/core
* for-next/errata:
arm64: errata: Workaround possible Cortex-A715 [ESR|FAR]_ELx corruption
arm64: Add Cortex-715 CPU part definition
Diffstat (limited to 'arch/arm64/Kconfig')
| -rw-r--r-- | arch/arm64/Kconfig | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 1a1bd71ae294..0cb1443cc26f 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -968,6 +968,22 @@ config ARM64_ERRATUM_2457168 If unsure, say Y. +config ARM64_ERRATUM_2645198 + bool "Cortex-A715: 2645198: Workaround possible [ESR|FAR]_ELx corruption" + default y + help + This option adds the workaround for ARM Cortex-A715 erratum 2645198. + + If a Cortex-A715 cpu sees a page mapping permissions change from executable + to non-executable, it may corrupt the ESR_ELx and FAR_ELx registers on the + next instruction abort caused by permission fault. + + Only user-space does executable to non-executable permission transition via + mprotect() system call. Workaround the problem by doing a break-before-make + TLB invalidation, for all changes to executable user space mappings. + + If unsure, say Y. + config CAVIUM_ERRATUM_22375 bool "Cavium erratum 22375, 24313" default y |