From: Like Xu likexu@tencent.com
commit c6c937d673aaa1d603f62f134e1ca9c173eeeed3 upstream.
Just like on the optional mmu_alloc_direct_roots() path, once shadow path reaches "r = -EIO" somewhere, the caller needs to know the actual state in order to enter error handling and avoid something worse.
Fixes: 4a38162ee9f1 ("KVM: MMU: load PDPTRs outside mmu_lock") Signed-off-by: Like Xu likexu@tencent.com Reviewed-by: Sean Christopherson seanjc@google.com Message-Id: 20220301124941.48412-1-likexu@tencent.com Signed-off-by: Paolo Bonzini pbonzini@redhat.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- arch/x86/kvm/mmu/mmu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/x86/kvm/mmu/mmu.c +++ b/arch/x86/kvm/mmu/mmu.c @@ -3573,7 +3573,7 @@ set_root_pgd: out_unlock: write_unlock(&vcpu->kvm->mmu_lock);
- return 0; + return r; }
static int mmu_alloc_special_roots(struct kvm_vcpu *vcpu)