[PATCH v5 06/28] KVM: arm64: Pay attention to FFR parameter in SVE save and load

From: Mark Brown
Date: Wed Apr 16 2025 - 20:27:40 EST


The hypervisor copies of the SVE save and load functions are prototyped
with third arguments specifying FFR should be accessed but the assembly
functions overwrite whatever is supplied to unconditionally access FFR.
Remove this and use the supplied parameter.

This has no effect currently since FFR is always present for SVE but will
be important for SME.

Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
---
arch/arm64/kvm/hyp/fpsimd.S | 2 --
1 file changed, 2 deletions(-)

diff --git a/arch/arm64/kvm/hyp/fpsimd.S b/arch/arm64/kvm/hyp/fpsimd.S
index e950875e31ce..6e16cbfc5df2 100644
--- a/arch/arm64/kvm/hyp/fpsimd.S
+++ b/arch/arm64/kvm/hyp/fpsimd.S
@@ -21,13 +21,11 @@ SYM_FUNC_START(__fpsimd_restore_state)
SYM_FUNC_END(__fpsimd_restore_state)

SYM_FUNC_START(__sve_restore_state)
- mov x2, #1
sve_load 0, x1, x2, 3
ret
SYM_FUNC_END(__sve_restore_state)

SYM_FUNC_START(__sve_save_state)
- mov x2, #1
sve_save 0, x1, x2, 3
ret
SYM_FUNC_END(__sve_save_state)

--
2.39.5