arm64: Provide basic EL2 setup for FEAT_{LS64, LS64_V} usage at EL0/1

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Instructions introduced by FEAT_{LS64, LS64_V} is controlled by
HCRX_EL2.{EnALS, EnASR}. Configure all of these to allow usage
at EL0/1.

This doesn't mean these instructions are always available in
EL0/1 if provided. The hypervisor still have the control at
runtime.

Acked-by: Will Deacon <will@kernel.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Oliver Upton <oupton@kernel.org>
Signed-off-by: Yicong Yang <yangyicong@hisilicon.com>
Signed-off-by: Zhou Wang <wangzhou1@hisilicon.com>
Signed-off-by: Will Deacon <will@kernel.org>

...

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Yicong Yang 2026-01-19 10:29:25 +08:00 • committed by Will Deacon

parent 2937aeec9d

commit dea58da4b6

1 changed files with 11 additions and 1 deletions

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arch/arm64/include/asm/el2_setup.h

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