On Thu, Mar 18, 2021 at 12:25:28PM +0000, Marc Zyngier wrote:
> 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@xxxxxxxxxx>
> ---
> 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;
> + }
Acked-by: Will Deacon <will@xxxxxxxxxx>
Will
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