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authorTirumalesh Chalamarla <tchalamarla@caviumnetworks.com>2016-03-04 13:56:09 -0800
committerWill Deacon <will.deacon@arm.com>2016-05-03 18:23:01 +0100
commit1bd37a6835bef0ecd2138cb42f9088fd890f9939 (patch)
treec2b9cb2eb6d21b7d12d7a846e177d67fd7638d32 /Documentation/arm64
parent4e3e9b6997b24383264031198bf8905b3746221e (diff)
downloadop-kernel-dev-1bd37a6835bef0ecd2138cb42f9088fd890f9939.zip
op-kernel-dev-1bd37a6835bef0ecd2138cb42f9088fd890f9939.tar.gz
iommu/arm-smmu: Workaround for ThunderX erratum #27704
Due to erratum #27704, the CN88xx SMMUv2 implementation supports only shared ASID and VMID numberspaces. This patch ensures that ASID and VMIDs are unique across all SMMU instances on affected Cavium systems. Signed-off-by: Tirumalesh Chalamarla <tchalamarla@caviumnetworks.com> Signed-off-by: Akula Geethasowjanya <Geethasowjanya.Akula@caviumnetworks.com> [will: commit message, comments and formatting] Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'Documentation/arm64')
-rw-r--r--Documentation/arm64/silicon-errata.txt1
1 files changed, 1 insertions, 0 deletions
diff --git a/Documentation/arm64/silicon-errata.txt b/Documentation/arm64/silicon-errata.txt
index ba4b6ac..806f91c 100644
--- a/Documentation/arm64/silicon-errata.txt
+++ b/Documentation/arm64/silicon-errata.txt
@@ -57,3 +57,4 @@ stable kernels.
| Cavium | ThunderX ITS | #22375, #24313 | CAVIUM_ERRATUM_22375 |
| Cavium | ThunderX GICv3 | #23154 | CAVIUM_ERRATUM_23154 |
| Cavium | ThunderX Core | #27456 | CAVIUM_ERRATUM_27456 |
+| Cavium | ThunderX SMMUv2 | #27704 | N/A |
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