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| author | Will Deacon <will.deacon@arm.com> | 2017-05-18 17:10:34 +0200 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2017-05-30 12:07:42 +0200 |
| commit | 3fde2999fac549024a56353966844ac7633b74ae (patch) | |
| tree | 35de54842162b884113fd61704dc460a816d10de | |
| parent | arm64: mm: explicity include linux/vmalloc.h (diff) | |
| download | linux-3fde2999fac549024a56353966844ac7633b74ae.tar.xz linux-3fde2999fac549024a56353966844ac7633b74ae.zip | |
arm64: cpufeature: Don't dump useless backtrace on CPU_OUT_OF_SPEC
Unfortunately, it turns out that mismatched CPU features in big.LITTLE
systems are starting to appear in the wild. Whilst we should continue to
taint the kernel with CPU_OUT_OF_SPEC for features that differ in ways
that we can't fix up, dumping a useless backtrace out of the cpufeature
code is pointless and irritating.
This patch removes the backtrace from the taint.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
| -rw-r--r-- | arch/arm64/kernel/cpufeature.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c index 817ce3365e20..22f554320581 100644 --- a/arch/arm64/kernel/cpufeature.c +++ b/arch/arm64/kernel/cpufeature.c @@ -639,8 +639,8 @@ void update_cpu_features(int cpu, * Mismatched CPU features are a recipe for disaster. Don't even * pretend to support them. */ - WARN_TAINT_ONCE(taint, TAINT_CPU_OUT_OF_SPEC, - "Unsupported CPU feature variation.\n"); + pr_warn_once("Unsupported CPU feature variation detected.\n"); + add_taint(TAINT_CPU_OUT_OF_SPEC, LOCKDEP_STILL_OK); } u64 read_sanitised_ftr_reg(u32 id) |