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FROMGIT: KVM: arm64: Map SVE context at EL2 when available

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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 <will@kernel.org>
Signed-off-by: Marc Zyngier <maz@kernel.org>
(cherry picked from commit 0a9a98fda3a24b0775ace4be096290b221f2f6a5
 git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git next)
Signed-off-by: Will Deacon <willdeacon@google.com>
Bug: 178098380
Test: atest VirtualizationHostTestCases on an EL2-enabled device
Change-Id: Iacc17d38754d40ed36be2c1ff5e5104b75974415
This commit is contained in:
Marc Zyngier
2021-03-11 15:07:14 +00:00
committed by Quentin Perret
parent 1105b4d1ce
commit 4cb78b26ea
1 changed files with 11 additions and 0 deletions
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11
arch/arm64/kvm/fpsimd.c
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@@ -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: