Commit 483dbf6a authored May 12, 2021 by Mark Brown Committed by Will Deacon May 26, 2021

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



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>

parent c4681547

arch/arm64/include/asm/fpsimdmacros.h

+3 −1

Original line number	Original line	Diff line number	Diff line
	@@ -213,8 +213,10 @@
	mov v\nz\().16b, v\nz\().16b		mov v\nz\().16b, v\nz\().16b
	.endm		.endm

	.macro sve_flush		.macro sve_flush_z
	_for n, 0, 31, _sve_flush_z \n		_for n, 0, 31, _sve_flush_z \n
			.endm
			.macro sve_flush_p_ffr
	_for n, 0, 15, _sve_pfalse \n		_for n, 0, 15, _sve_pfalse \n
	_sve_wrffr 0		_sve_wrffr 0
	.endm		.endm

arch/arm64/kernel/entry-fpsimd.S

+2 −1

Original line number	Original line	Diff line number	Diff line
	@@ -72,7 +72,8 @@ SYM_FUNC_END(sve_load_from_fpsimd_state)

	/* Zero all SVE registers but the first 128-bits of each vector */		/* Zero all SVE registers but the first 128-bits of each vector */
	SYM_FUNC_START(sve_flush_live)		SYM_FUNC_START(sve_flush_live)
	sve_flush		sve_flush_z
			sve_flush_p_ffr
	ret		ret
	SYM_FUNC_END(sve_flush_live)		SYM_FUNC_END(sve_flush_live)