arm64: KVM: Add SMCCC_ARCH_WORKAROUND_1 fast handling

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We want SMCCC_ARCH_WORKAROUND_1 to be fast. As fast as possible.
So let's intercept it as early as we can by testing for the
function call number as soon as we've identified a HVC call
coming from the guest.

Tested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

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Marc Zyngier 2018-02-06 17:56:15 +00:00 • committed by Catalin Marinas

parent 6167ec5c91

commit f72af90c37

1 changed files with 18 additions and 2 deletions

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arch/arm64/kvm/hyp/hyp-entry.S

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