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arm64/sve: Split _sve_flush macro into separate Z and predicate flushes

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Trivial refactoring to support further work, no change to generated code.

Signed-off-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Dave Martin <Dave.Martin@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Link: https://lore.kernel.org/r/20210512151131.27877-2-broonie@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
This commit is contained in:
Mark Brown 2021-05-12 16:11:29 +01:00 committed by Will Deacon
parent c4681547bc
commit 483dbf6a35
2 changed files with 5 additions and 2 deletions
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4
arch/arm64/include/asm/fpsimdmacros.h
View file

@ -213,8 +213,10 @@
mov v\nz\().16b, v\nz\().16b
.endm
.macro sve_flush
.macro sve_flush_z
_for n, 0, 31, _sve_flush_z \n
.endm
.macro sve_flush_p_ffr
_for n, 0, 15, _sve_pfalse \n
_sve_wrffr 0
.endm

3
arch/arm64/kernel/entry-fpsimd.S
View file

@ -72,7 +72,8 @@ SYM_FUNC_END(sve_load_from_fpsimd_state)
/* Zero all SVE registers but the first 128-bits of each vector */
SYM_FUNC_START(sve_flush_live)
sve_flush
sve_flush_z
sve_flush_p_ffr
ret
SYM_FUNC_END(sve_flush_live)