Message ID | 20210512151131.27877-2-broonie@kernel.org (mailing list archive) |
---|---|
State | New, archived |
Headers | show |
Series | arm64/sve: Trivial optimisation for 128 bit SVE vectors | expand |
diff --git a/arch/arm64/include/asm/fpsimdmacros.h b/arch/arm64/include/asm/fpsimdmacros.h index a2563992d2dc..059204477ce6 100644 --- a/arch/arm64/include/asm/fpsimdmacros.h +++ b/arch/arm64/include/asm/fpsimdmacros.h @@ -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 diff --git a/arch/arm64/kernel/entry-fpsimd.S b/arch/arm64/kernel/entry-fpsimd.S index 3ecec60d3295..7921d58427c2 100644 --- a/arch/arm64/kernel/entry-fpsimd.S +++ b/arch/arm64/kernel/entry-fpsimd.S @@ -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)