arm64: Add ARM_SMCCC_ARCH_WORKAROUND_1 BP hardening support

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Commit b092201e00 upstream.

Add the detection and runtime code for ARM_SMCCC_ARCH_WORKAROUND_1.
It is lovely. Really.

Tested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Marc Zyngier 2018-02-06 17:56:20 +00:00 • committed by Greg Kroah-Hartman

parent ac63fdb4a2

commit dbca45b996

2 changed files with 87 additions and 1 deletions

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20

arch/arm64/kernel/bpi.S

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68

arch/arm64/kernel/cpu_errata.c

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