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| author |   Anshuman Khandual <anshuman.khandual@arm.com> | 2022-01-25 19:50:32 +0530 |
|---|---|---|
| committer |   Mathieu Poirier <mathieu.poirier@linaro.org> | 2022-01-27 12:01:53 -0700 |
| commit | 607a9afaae09cde21ece458a8f10cb99d3f94f14 (patch) | |
| tree | 9d607431de66713bc3f7c4c9aa999d8324259c3e /Documentation/arm64 | |
| parent | arm64: Add Cortex-A510 CPU part definition (diff) | |
| download | linux-dev-607a9afaae09cde21ece458a8f10cb99d3f94f14.tar.xz linux-dev-607a9afaae09cde21ece458a8f10cb99d3f94f14.zip | |
arm64: errata: Add detection for TRBE ignored system register writes
TRBE implementations affected by Arm erratum #2064142 might fail to write
into certain system registers after the TRBE has been disabled. Under some
conditions after TRBE has been disabled, writes into certain TRBE registers
TRBLIMITR_EL1, TRBPTR_EL1, TRBBASER_EL1, TRBSR_EL1 and TRBTRG_EL1 will be
ignored and not be effected. This adds a new errata ARM64_ERRATUM_2064142
in arm64 errata framework.
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Suzuki Poulose <suzuki.poulose@arm.com>
Cc: coresight@lists.linaro.org
Cc: linux-doc@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Link: https://lore.kernel.org/r/1643120437-14352-3-git-send-email-anshuman.khandual@arm.com
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Diffstat (limited to 'Documentation/arm64')
| -rw-r--r-- | Documentation/arm64/silicon-errata.rst | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/Documentation/arm64/silicon-errata.rst b/Documentation/arm64/silicon-errata.rst index 5342e895fb60..c9b30e6c2b6c 100644 --- a/Documentation/arm64/silicon-errata.rst +++ b/Documentation/arm64/silicon-errata.rst @@ -52,6 +52,8 @@ stable kernels. | Allwinner | A64/R18 | UNKNOWN1 | SUN50I_ERRATUM_UNKNOWN1 | +----------------+-----------------+-----------------+-----------------------------+ +----------------+-----------------+-----------------+-----------------------------+ +| ARM | Cortex-A510 | #2064142 | ARM64_ERRATUM_2064142 | ++----------------+-----------------+-----------------+-----------------------------+ | ARM | Cortex-A53 | #826319 | ARM64_ERRATUM_826319 | +----------------+-----------------+-----------------+-----------------------------+ | ARM | Cortex-A53 | #827319 | ARM64_ERRATUM_827319 | |