moonjuice/kernel_arpi
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

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

Browse Source 
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 0a9a98fda3
 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
Download Patch File Download Diff File Expand all files Collapse all files

11
arch/arm64/kvm/fpsimd.c
View File

@@ -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: