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arm64: Verify CPU errata work arounds on hotplugged CPU

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CPU Errata work arounds are detected and applied to the
kernel code at boot time and the data is then freed up.
If a new hotplugged CPU requires a work around which
was not applied at boot time, there is nothing we can
do but simply fail the booting.

Cc: Will Deacon <will.deacon@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
This commit is contained in:
Suzuki K Poulose
2016-04-22 12:25:34 +01:00
committed by Will Deacon
parent 25fc11aead
commit 6a6efbb45b
3 changed files with 22 additions and 0 deletions
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arch/arm64/kernel/cpufeature.c
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@@ -998,6 +998,7 @@ void verify_local_cpu_capabilities(void)
if (!sys_caps_initialised)
return;
verify_local_cpu_errata();
verify_local_cpu_features(arm64_features);
verify_local_elf_hwcaps(arm64_elf_hwcaps);
if (system_supports_32bit_el0())