arm64: add sysfs vulnerability show for spectre-v2

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Track whether all the cores in the machine are vulnerable to Spectre-v2,
and whether all the vulnerable cores have been mitigated. We then expose
this information to userspace via sysfs.

Signed-off-by: Jeremy Linton <jeremy.linton@arm.com>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Tested-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>

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Jeremy Linton 2019-04-15 16:21:26 -05:00 • committed by Will Deacon

parent 8c1e3d2bb4

commit d2532e27b5

1 changed files with 26 additions and 1 deletions

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arch/arm64/kernel/cpu_errata.c

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