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| author | Marc Zyngier <marc.zyngier@arm.com> | 2018-02-06 17:56:19 +0000 |
|---|---|---|
| committer | Alex Shi <alex.shi@linaro.org> | 2018-03-09 16:58:36 +0800 |
| commit | d0a7cbfa74b5f83e0d4d4d344f2f17182ae0d89b (patch) | |
| tree | f5a19b2dccf1285349ebb4a968beda4cf346f777 /arch/arm64/kernel/cpu_errata.c | |
| parent | cd213d8eb1e4e577041a6274d4654e69a3068735 (diff) | |
arm/arm64: smccc: Implement SMCCC v1.1 inline primitive
commit f2d3b2e8759a upstream.
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>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Alex Shi <alex.shi@linaro.org>
Diffstat (limited to 'arch/arm64/kernel/cpu_errata.c')
0 files changed, 0 insertions, 0 deletions