diff options
| author | Will Deacon <[email protected]> | 2019-07-30 15:40:20 +0100 |
|---|---|---|
| committer | Catalin Marinas <[email protected]> | 2019-07-31 18:10:55 +0100 |
| commit | 147b9635e6347104b91f48ca9dca61eb0fbf2a54 (patch) | |
| tree | b353ced3427563d2135282afda8d350fcb1208bb /tools/perf/util/trace-event-scripting.c | |
| parent | a22c5cf5d37ddcd4d2dd98ee9cf04fa5dd1e1c01 (diff) | |
arm64: cpufeature: Fix feature comparison for CTR_EL0.{CWG,ERG}
If CTR_EL0.{CWG,ERG} are 0b0000 then they must be interpreted to have
their architecturally maximum values, which defeats the use of
FTR_HIGHER_SAFE when sanitising CPU ID registers on heterogeneous
machines.
Introduce FTR_HIGHER_OR_ZERO_SAFE so that these fields effectively
saturate at zero.
Fixes: 3c739b571084 ("arm64: Keep track of CPU feature registers")
Cc: <[email protected]> # 4.4.x-
Reviewed-by: Suzuki K Poulose <[email protected]>
Acked-by: Mark Rutland <[email protected]>
Signed-off-by: Will Deacon <[email protected]>
Signed-off-by: Catalin Marinas <[email protected]>
Diffstat (limited to 'tools/perf/util/trace-event-scripting.c')
0 files changed, 0 insertions, 0 deletions