[PATCH v2 07/11] KVM: arm64: Map SVE context at EL2 when available
From: Marc Zyngier <maz@kernel.org>
Date: 2021-03-18 12:28:03
Also in:
kvm, kvmarm
Subsystem:
arm64 port (aarch64 architecture), kernel virtual machine for arm64 (kvm/arm64), the rest · Maintainers:
Catalin Marinas, Will Deacon, Marc Zyngier, Oliver Upton, Linus Torvalds
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@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
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