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| author |   Catalin Marinas <catalin.marinas@arm.com> | 2018-11-19 11:27:28 +0000 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2018-11-29 16:45:45 +0000 |
| commit | ce8c80c536dac9f325a051b30bf7730ee505eddc (patch) | |
| tree | b08f46fdd50ec86694cbd8fbe78c4b84daced233 /Documentation/arm64 | |
| parent | Linux 4.20-rc4 (diff) | |
| download | linux-dev-ce8c80c536dac9f325a051b30bf7730ee505eddc.tar.xz linux-dev-ce8c80c536dac9f325a051b30bf7730ee505eddc.zip | |
arm64: Add workaround for Cortex-A76 erratum 1286807
On the affected Cortex-A76 cores (r0p0 to r3p0), if a virtual address
for a cacheable mapping of a location is being accessed by a core while
another core is remapping the virtual address to a new physical page
using the recommended break-before-make sequence, then under very rare
circumstances TLBI+DSB completes before a read using the translation
being invalidated has been observed by other observers. The workaround
repeats the TLBI+DSB operation and is shared with the Qualcomm Falkor
erratum 1009
Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'Documentation/arm64')
| -rw-r--r-- | Documentation/arm64/silicon-errata.txt | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/Documentation/arm64/silicon-errata.txt b/Documentation/arm64/silicon-errata.txt index 76ccded8b74c..8f9577621144 100644 --- a/Documentation/arm64/silicon-errata.txt +++ b/Documentation/arm64/silicon-errata.txt @@ -57,6 +57,7 @@ stable kernels. | ARM | Cortex-A73 | #858921 | ARM64_ERRATUM_858921 | | ARM | Cortex-A55 | #1024718 | ARM64_ERRATUM_1024718 | | ARM | Cortex-A76 | #1188873 | ARM64_ERRATUM_1188873 | +| ARM | Cortex-A76 | #1286807 | ARM64_ERRATUM_1286807 | | ARM | MMU-500 | #841119,#826419 | N/A | | | | | | | Cavium | ThunderX ITS | #22375, #24313 | CAVIUM_ERRATUM_22375 | |