diff mbox series

[v3,09/11] KVM: arm64: Do not use sve_cond_update_zcr updating with ZCR_ELx_LEN_MASK

Message ID 20240528125914.277057-10-tabba@google.com (mailing list archive)
State New, archived
Headers show
Series KVM: arm64: Fix handling of host fpsimd/sve state in protected mode | expand

Commit Message

Fuad Tabba May 28, 2024, 12:59 p.m. UTC 
A conditional update of ZCR with ZCR_ELx_LEN_MASK is unlikely to
be beneficial, since at the time nobody implements 2k vectors.

Signed-off-by: Fuad Tabba <tabba@google.com>
---
 arch/arm64/kvm/hyp/nvhe/hyp-main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/arch/arm64/kvm/hyp/nvhe/hyp-main.c b/arch/arm64/kvm/hyp/nvhe/hyp-main.c
index 1088b0bd3cc5..b28d7d8cdc30 100644
--- a/arch/arm64/kvm/hyp/nvhe/hyp-main.c
+++ b/arch/arm64/kvm/hyp/nvhe/hyp-main.c
@@ -468,7 +468,7 @@  void handle_trap(struct kvm_cpu_context *host_ctxt)
 	case ESR_ELx_EC_SVE:
 		cpacr_clear_set(0, CPACR_ELx_ZEN);
 		isb();
-		sve_cond_update_zcr_vq(ZCR_ELx_LEN_MASK, SYS_ZCR_EL2);
+		write_sysreg_s(ZCR_ELx_LEN_MASK, SYS_ZCR_EL2);
 		break;
 	case ESR_ELx_EC_IABT_LOW:
 	case ESR_ELx_EC_DABT_LOW: