[PATCH v2 07/11] KVM: arm64: Map SVE context at EL2 when available

[Marc Zyngier]

When running on nVHE, and that the vcpu supports SVE, map the
SVE state at EL2 so that KVM can access it.

Signed-off-by: Marc Zyngier <maz at kernel.org>
---
 arch/arm64/kvm/fpsimd.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/arch/arm64/kvm/fpsimd.c b/arch/arm64/kvm/fpsimd.c
index b7e36a506d3d..3c37a419fa82 100644
--- a/arch/arm64/kvm/fpsimd.c
+++ b/arch/arm64/kvm/fpsimd.c
@@ -43,6 +43,17 @@ int kvm_arch_vcpu_run_map_fp(struct kvm_vcpu *vcpu)
 	if (ret)
 		goto error;
 
+	if (vcpu->arch.sve_state) {
+		void *sve_end;
+
+		sve_end = vcpu->arch.sve_state + vcpu_sve_state_size(vcpu);
+
+		ret = create_hyp_mappings(vcpu->arch.sve_state, sve_end,
+					  PAGE_HYP);
+		if (ret)
+			goto error;
+	}
+
 	vcpu->arch.host_thread_info = kern_hyp_va(ti);
 	vcpu->arch.host_fpsimd_state = kern_hyp_va(fpsimd);
 error:
-- 
2.29.2