From 0a9a98fda3a24b0775ace4be096290b221f2f6a5 Mon Sep 17 00:00:00 2001 From: Marc Zyngier Date: Thu, 11 Mar 2021 15:07:14 +0000 Subject: KVM: arm64: Map SVE context at EL2 when available When running on nVHE, and that the vcpu supports SVE, map the SVE state at EL2 so that KVM can access it. Acked-by: Will Deacon Signed-off-by: Marc Zyngier --- arch/arm64/kvm/fpsimd.c | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'arch') 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: -- cgit v1.2.3