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| author | James Morse <james.morse@arm.com> | 2019-10-17 18:42:58 +0100 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2019-10-25 17:46:40 +0100 |
| commit | 05460849c3b51180d5ada3373d0449aea19075e4 (patch) | |
| tree | 5bfcc53493c796afc793825f8801159106bdcf27 /tools/perf/scripts/python/stackcollapse.py | |
| parent | 4f5cafb5cb8471e54afdc9054d973535614f7675 (diff) | |
arm64: errata: Hide CTR_EL0.DIC on systems affected by Neoverse-N1 #1542419
Cores affected by Neoverse-N1 #1542419 could execute a stale instruction
when a branch is updated to point to freshly generated instructions.
To workaround this issue we need user-space to issue unnecessary
icache maintenance that we can trap. Start by hiding CTR_EL0.DIC.
Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: James Morse <james.morse@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'tools/perf/scripts/python/stackcollapse.py')
0 files changed, 0 insertions, 0 deletions