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| author | Rob Herring <robh@kernel.org> | 2024-01-10 11:29:21 -0600 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2024-01-12 12:51:33 +0000 |
| commit | f827bcdafa2a2ac21c91e47f587e8d0c76195409 (patch) | |
| tree | 70b09a59cf2033c4a23e3e1e75f6327f616b3266 /Documentation/arch | |
| parent | 546b7cde9b1dd36089649101b75266564600ffe5 (diff) | |
| download | linux-f827bcdafa2a2ac21c91e47f587e8d0c76195409.tar.gz | |
arm64: errata: Add Cortex-A510 speculative unprivileged load workaround
Implement the workaround for ARM Cortex-A510 erratum 3117295. On an
affected Cortex-A510 core, a speculatively executed unprivileged load
might leak data from a privileged load via a cache side channel. The
issue only exists for loads within a translation regime with the same
translation (e.g. same ASID and VMID). Therefore, the issue only affects
the return to EL0.
The erratum and workaround are the same as ARM Cortex-A520 erratum
2966298, so reuse the existing workaround.
Cc: stable@vger.kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Link: https://lore.kernel.org/r/20240110-arm-errata-a510-v1-2-d02bc51aeeee@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'Documentation/arch')
| -rw-r--r-- | Documentation/arch/arm64/silicon-errata.rst | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/Documentation/arch/arm64/silicon-errata.rst b/Documentation/arch/arm64/silicon-errata.rst index f47f63bcf67c91..7acd64c61f50c3 100644 --- a/Documentation/arch/arm64/silicon-errata.rst +++ b/Documentation/arch/arm64/silicon-errata.rst @@ -71,6 +71,8 @@ stable kernels. +----------------+-----------------+-----------------+-----------------------------+ | ARM | Cortex-A510 | #2658417 | ARM64_ERRATUM_2658417 | +----------------+-----------------+-----------------+-----------------------------+ +| ARM | Cortex-A510 | #3117295 | ARM64_ERRATUM_3117295 | ++----------------+-----------------+-----------------+-----------------------------+ | ARM | Cortex-A520 | #2966298 | ARM64_ERRATUM_2966298 | +----------------+-----------------+-----------------+-----------------------------+ | ARM | Cortex-A53 | #826319 | ARM64_ERRATUM_826319 | |