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authorSuzuki K Poulose <suzuki.poulose@arm.com>2018-03-26 17:12:37 +0300
committerWill Deacon <will.deacon@arm.com>2018-03-26 20:01:39 +0300
commitfbd890b9b8497bab04c1d338bd97579a7bc53fab (patch)
tree721b537c97f2a4239ff92f6fb06386246e0e52fc /tools/perf
parentd69fe9a7e7214d49fe157ec20889892388d0fe23 (diff)
downloadlinux-fbd890b9b8497bab04c1d338bd97579a7bc53fab.tar.xz
arm64: capabilities: Allow features based on local CPU scope
So far we have treated the feature capabilities as system wide and this wouldn't help with features that could be detected locally on one or more CPUs (e.g, KPTI, Software prefetch). This patch splits the feature detection to two phases : 1) Local CPU features are checked on all boot time active CPUs. 2) System wide features are checked only once after all CPUs are active. Reviewed-by: Dave Martin <dave.martin@arm.com> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
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