Messages in this thread Patch in this message | | | From | Dirk Mueller <> | Subject | [PATCH] arm64: Check for errata before evaluating cpu features | Date | Wed, 25 Jul 2018 10:35:04 +0200 |
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Since commit d3aec8a28be3b8 ("arm64: capabilities: Restrict KPTI detection to boot-time CPUs") we rely on errata flags being already populated during feature enumeration. The order of errata and features was flipped as part of commit ed478b3f9e4a ("arm64: capabilities: Group handling of features and errata workarounds").
Return to the orginal order of errata and feature evaluation to ensure errata flags are present during feature evaluation.
Fixes: d3aec8a28be3b8 ("arm64: capabilities: Restrict KPTI detection to boot-time CPUs") CC: Suzuki K Poulose <suzuki.poulose@arm.com> CC: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Dirk Mueller <dmueller@suse.com> --- arch/arm64/kernel/cpufeature.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c index f24892a40d2c..c6d80743f4ed 100644 --- a/arch/arm64/kernel/cpufeature.c +++ b/arch/arm64/kernel/cpufeature.c @@ -1351,9 +1351,9 @@ static void __update_cpu_capabilities(const struct arm64_cpu_capabilities *caps, static void update_cpu_capabilities(u16 scope_mask) { - __update_cpu_capabilities(arm64_features, scope_mask, "detected:"); __update_cpu_capabilities(arm64_errata, scope_mask, "enabling workaround for"); + __update_cpu_capabilities(arm64_features, scope_mask, "detected:"); } static int __enable_cpu_capability(void *arg) @@ -1408,8 +1408,8 @@ __enable_cpu_capabilities(const struct arm64_cpu_capabilities *caps, static void __init enable_cpu_capabilities(u16 scope_mask) { - __enable_cpu_capabilities(arm64_features, scope_mask); __enable_cpu_capabilities(arm64_errata, scope_mask); + __enable_cpu_capabilities(arm64_features, scope_mask); } /* -- 2.18.0
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