arm/arm64: smccc: Implement SMCCC v1.1 inline primitive

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One of the major improvement of SMCCC v1.1 is that it only clobbers
the first 4 registers, both on 32 and 64bit. This means that it
becomes very easy to provide an inline version of the SMC call
primitive, and avoid performing a function call to stash the
registers that would otherwise be clobbered by SMCCC v1.0.

Reviewed-by: Robin Murphy <robin.murphy@arm.com>
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>

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Marc Zyngier 2018-02-06 17:56:19 +00:00 • committed by Catalin Marinas

parent ded4c39e93

commit f2d3b2e875

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include/linux/arm-smccc.h

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