diff options
| author | Will Deacon <will@kernel.org> | 2026-06-10 14:00:21 +0300 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2026-06-10 14:00:21 +0300 |
| commit | 1940e70a8144bf75e6df26bf6f600862ea7f7ea1 (patch) | |
| tree | cf65ff80d627e9926c994537376fe0fd8557e824 | |
| parent | ec7216f92e4ebd485b1c6dc6aa3f6064b71a5768 (diff) | |
| download | linux-1940e70a8144bf75e6df26bf6f600862ea7f7ea1.tar.xz | |
arm64: errata: Mitigate TLBI errata on Microsoft Azure Cobalt 100 CPU
Commit fb091ff39479 ("arm64: Subscribe Microsoft Azure Cobalt 100 to ARM
Neoverse N2 errata") states that Microsoft Azure Cobalt 100 CPU "is a
Microsoft implemented CPU based on r0p0 of the ARM Neoverse N2 CPU, and
therefore suffers from all the same errata.".
So enable the workaround for the latest broadcast TLB invalidation bug
on these parts.
Signed-off-by: Will Deacon <will@kernel.org>
| -rw-r--r-- | Documentation/arch/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/arch/arm64/silicon-errata.rst b/Documentation/arch/arm64/silicon-errata.rst index dc4de8f2dce3..014aa1c215a1 100644 --- a/Documentation/arch/arm64/silicon-errata.rst +++ b/Documentation/arch/arm64/silicon-errata.rst @@ -372,3 +372,5 @@ stable kernels. +----------------+-----------------+-----------------+-----------------------------+ | Microsoft | Azure Cobalt 100| #3324339 | ARM64_ERRATUM_3194386 | +----------------+-----------------+-----------------+-----------------------------+ +| Microsoft | Azure Cobalt 100| #4193789 | ARM64_ERRATUM_4118414 | ++----------------+-----------------+-----------------+-----------------------------+ diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index eac9a02b5f62..c053f012c6a6 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -1182,6 +1182,7 @@ config ARM64_ERRATUM_4118414 * ARM Neoverse-V2 erratum 4193787 * ARM Neoverse-V3 erratum 4193784 * ARM Neoverse-V3AE erratum 4193784 + * Microsoft Azure Cobalt 100 4193789 * NVIDIA Olympus erratum T410-OLY-1029 On affected cores, some memory accesses might not be completed by diff --git a/arch/arm64/kernel/cpu_errata.c b/arch/arm64/kernel/cpu_errata.c index 476b0108057f..1995e1198648 100644 --- a/arch/arm64/kernel/cpu_errata.c +++ b/arch/arm64/kernel/cpu_errata.c @@ -365,6 +365,7 @@ static const struct arm64_cpu_capabilities arm64_repeat_tlbi_list[] = { MIDR_ALL_VERSIONS(MIDR_NEOVERSE_V3), MIDR_ALL_VERSIONS(MIDR_NEOVERSE_V3AE), MIDR_ALL_VERSIONS(MIDR_NVIDIA_OLYMPUS), + MIDR_ALL_VERSIONS(MIDR_MICROSOFT_AZURE_COBALT_100), {} })), }, |