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| author | Mark Rutland <mark.rutland@arm.com> | 2025-09-19 15:58:29 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-10-29 14:00:00 +0100 |
| commit | 133bb61caf4440034ac8df33ee90b86997049e4e (patch) | |
| tree | 6f0377cd6f7efd71ac8b740c25c26b6035babf6f | |
| parent | 0db16ce5e57c7bd5fe47a853d619f689c8d3bec8 (diff) | |
| download | linux-133bb61caf4440034ac8df33ee90b86997049e4e.tar.gz linux-133bb61caf4440034ac8df33ee90b86997049e4e.tar.bz2 linux-133bb61caf4440034ac8df33ee90b86997049e4e.zip | |
arm64: errata: Apply workarounds for Neoverse-V3AE
commit 0c33aa1804d101c11ba1992504f17a42233f0e11 upstream.
Neoverse-V3AE is also affected by erratum #3312417, as described in its
Software Developer Errata Notice (SDEN) document:
Neoverse V3AE (MP172) SDEN v9.0, erratum 3312417
https://developer.arm.com/documentation/SDEN-2615521/9-0/
Enable the workaround for Neoverse-V3AE, and document this.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: James Morse <james.morse@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Ryan Roberts <ryan.roberts@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>
[ Ryan: Trivial backport ]
Signed-off-by: Ryan Roberts <ryan.roberts@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | Documentation/arm64/silicon-errata.rst | 2 | ||||
| -rw-r--r-- | arch/arm64/Kconfig | 1 | ||||
| -rw-r--r-- | arch/arm64/kernel/cpu_errata.c | 1 |
3 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/arm64/silicon-errata.rst b/Documentation/arm64/silicon-errata.rst index 17da97209976..951657baeaa8 100644 --- a/Documentation/arm64/silicon-errata.rst +++ b/Documentation/arm64/silicon-errata.rst @@ -134,6 +134,8 @@ stable kernels. +----------------+-----------------+-----------------+-----------------------------+ | ARM | Neoverse-V3 | #3312417 | ARM64_ERRATUM_3194386 | +----------------+-----------------+-----------------+-----------------------------+ +| ARM | Neoverse-V3AE | #3312417 | ARM64_ERRATUM_3194386 | ++----------------+-----------------+-----------------+-----------------------------+ | ARM | MMU-500 | #841119,826419 | N/A | +----------------+-----------------+-----------------+-----------------------------+ +----------------+-----------------+-----------------+-----------------------------+ diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 82eba7ffa1d5..a242c4632137 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -617,6 +617,7 @@ config ARM64_ERRATUM_3194386 * ARM Neoverse-V1 erratum 3324341 * ARM Neoverse V2 erratum 3324336 * ARM Neoverse-V3 erratum 3312417 + * ARM Neoverse-V3AE erratum 3312417 On affected cores "MSR SSBS, #0" instructions may not affect subsequent speculative instructions, which may permit unexepected diff --git a/arch/arm64/kernel/cpu_errata.c b/arch/arm64/kernel/cpu_errata.c index 1e1dfe59a469..ebf39755eaf5 100644 --- a/arch/arm64/kernel/cpu_errata.c +++ b/arch/arm64/kernel/cpu_errata.c @@ -863,6 +863,7 @@ static const struct midr_range erratum_spec_ssbs_list[] = { MIDR_ALL_VERSIONS(MIDR_NEOVERSE_V1), MIDR_ALL_VERSIONS(MIDR_NEOVERSE_V2), MIDR_ALL_VERSIONS(MIDR_NEOVERSE_V3), + MIDR_ALL_VERSIONS(MIDR_NEOVERSE_V3AE), {} }; #endif |