arm64: scs: Use 'scs_sp' register alias for x18
authorWill Deacon <will@kernel.org>
Fri, 15 May 2020 13:46:46 +0000 (14:46 +0100)
committerWill Deacon <will@kernel.org>
Mon, 18 May 2020 16:47:37 +0000 (17:47 +0100)
commit711e8b0de0d63c70c825b473da01288b661a2386
treed1fb5526919228e698d7687d73ab0017931910d7
parentbee348fab099b0f551caa874663e82a7f3bb64b3
arm64: scs: Use 'scs_sp' register alias for x18

x18 holds the SCS stack pointer value, so introduce a register alias to
make this easier to read in assembly code.

Tested-by: Sami Tolvanen <samitolvanen@google.com>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>
arch/arm64/include/asm/scs.h
arch/arm64/kernel/entry.S
arch/arm64/kernel/head.S