| Message ID | 20210511160446.42871-3-broonie@kernel.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | arm64/sve: Trivial optimisation for 128 bit SVE vectors | expand |
On Tue, May 11, 2021 at 05:04:45PM +0100, Mark Brown wrote: > This makes the code a bit clearer and as a result we can also make the > indentation more normal, there is no change to the generated code. > > Signed-off-by: Mark Brown <broonie@kernel.org> Reviewed-by: Dave Martin <Dave.Martin@arm.com> > --- > arch/arm64/kernel/entry-fpsimd.S | 9 ++++----- > 1 file changed, 4 insertions(+), 5 deletions(-) > > diff --git a/arch/arm64/kernel/entry-fpsimd.S b/arch/arm64/kernel/entry-fpsimd.S > index 7921d58427c2..dd8382e5ce82 100644 > --- a/arch/arm64/kernel/entry-fpsimd.S > +++ b/arch/arm64/kernel/entry-fpsimd.S > @@ -63,11 +63,10 @@ SYM_FUNC_END(sve_set_vq) > * and the rest zeroed. All the other SVE registers will be zeroed. > */ > SYM_FUNC_START(sve_load_from_fpsimd_state) > - sve_load_vq x1, x2, x3 > - fpsimd_restore x0, 8 > - _for n, 0, 15, _sve_pfalse \n > - _sve_wrffr 0 > - ret > + sve_load_vq x1, x2, x3 > + fpsimd_restore x0, 8 > + sve_flush_p_ffr > + ret > SYM_FUNC_END(sve_load_from_fpsimd_state) > > /* Zero all SVE registers but the first 128-bits of each vector */ > -- > 2.20.1 > > > _______________________________________________ > linux-arm-kernel mailing list > linux-arm-kernel@lists.infradead.org > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
diff --git a/arch/arm64/kernel/entry-fpsimd.S b/arch/arm64/kernel/entry-fpsimd.S index 7921d58427c2..dd8382e5ce82 100644 --- a/arch/arm64/kernel/entry-fpsimd.S +++ b/arch/arm64/kernel/entry-fpsimd.S @@ -63,11 +63,10 @@ SYM_FUNC_END(sve_set_vq) * and the rest zeroed. All the other SVE registers will be zeroed. */ SYM_FUNC_START(sve_load_from_fpsimd_state) - sve_load_vq x1, x2, x3 - fpsimd_restore x0, 8 - _for n, 0, 15, _sve_pfalse \n - _sve_wrffr 0 - ret + sve_load_vq x1, x2, x3 + fpsimd_restore x0, 8 + sve_flush_p_ffr + ret SYM_FUNC_END(sve_load_from_fpsimd_state) /* Zero all SVE registers but the first 128-bits of each vector */
This makes the code a bit clearer and as a result we can also make the indentation more normal, there is no change to the generated code. Signed-off-by: Mark Brown <broonie@kernel.org> --- arch/arm64/kernel/entry-fpsimd.S | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-)