]> git.baikalelectronics.ru Git - kernel.git/commit
arm64: errata: Add detection for TRBE ignored system register writes
authorAnshuman Khandual <anshuman.khandual@arm.com>
Tue, 25 Jan 2022 14:20:32 +0000 (19:50 +0530)
committerMathieu Poirier <mathieu.poirier@linaro.org>
Thu, 27 Jan 2022 19:01:53 +0000 (12:01 -0700)
commit831161591226ce8ede47f6cde7672a6cf555e110
tree9d607431de66713bc3f7c4c9aa999d8324259c3e
parentdda0641703520bef8d0fa5611f7b9c2da2968761
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>
Documentation/arm64/silicon-errata.rst
arch/arm64/Kconfig
arch/arm64/kernel/cpu_errata.c
arch/arm64/tools/cpucaps