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| author | Steven Price <steven.price@arm.com> | 2019-12-16 12:56:31 +0100 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2020-01-16 11:44:14 +0100 |
| commit | 275fa0ea2cf7a84450f9c0ec0d9e7ec168ed2e2d (patch) | |
| tree | 1a14bb38c7438a57a0f21266e1f81f5d0aed7186 /arch/arm64/include/asm/pgtable-prot.h | |
| parent | arm64: Rename WORKAROUND_1319367 to SPECULATIVE_AT_NVHE (diff) | |
| download | linux-275fa0ea2cf7a84450f9c0ec0d9e7ec168ed2e2d.tar.xz linux-275fa0ea2cf7a84450f9c0ec0d9e7ec168ed2e2d.zip | |
arm64: Workaround for Cortex-A55 erratum 1530923
Cortex-A55 erratum 1530923 allows TLB entries to be allocated as a
result of a speculative AT instruction. This may happen in the middle of
a guest world switch while the relevant VMSA configuration is in an
inconsistent state, leading to erroneous content being allocated into
TLBs.
The same workaround as is used for Cortex-A76 erratum 1165522
(WORKAROUND_SPECULATIVE_AT_VHE) can be used here. Note that this
mandates the use of VHE on affected parts.
Acked-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Steven Price <steven.price@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'arch/arm64/include/asm/pgtable-prot.h')
0 files changed, 0 insertions, 0 deletions