KVM MMU will use this to determine whether an #NPF should be serviced
with restricted memory or not.
Signed-off-by: Michael Roth <michael.roth@xxxxxxx>
---
arch/x86/kvm/svm/sev.c | 10 ++++++++++
arch/x86/kvm/svm/svm.c | 1 +
arch/x86/kvm/svm/svm.h | 2 ++
3 files changed, 13 insertions(+)
diff --git a/arch/x86/kvm/svm/sev.c b/arch/x86/kvm/svm/sev.c
index 73d614c538da..7a74a92cb39a 100644
--- a/arch/x86/kvm/svm/sev.c
+++ b/arch/x86/kvm/svm/sev.c
@@ -4499,3 +4499,13 @@ int sev_update_mem_attr(struct kvm_memory_slot *slot, unsigned int attr,
return 0;
}
+
+bool sev_fault_is_private(struct kvm *kvm, gpa_t gpa, u64 error_code, bool *private_fault)
+{
+ if (!sev_snp_guest(kvm))
+ return false;
+
+ *private_fault = (error_code & PFERR_GUEST_ENC_MASK) ? true : false;
+
+ return true;
+}
diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c
index e2edc4700e55..18e4a6c17d11 100644
--- a/arch/x86/kvm/svm/svm.c
+++ b/arch/x86/kvm/svm/svm.c
@@ -4861,6 +4861,7 @@ static struct kvm_x86_ops svm_x86_ops __initdata = {
.adjust_mapping_level = sev_adjust_mapping_level,
.update_mem_attr = sev_update_mem_attr,
+ .fault_is_private = sev_fault_is_private,
};
/*
diff --git a/arch/x86/kvm/svm/svm.h b/arch/x86/kvm/svm/svm.h
index 50a2bcaf3fd7..97038afa8020 100644
--- a/arch/x86/kvm/svm/svm.h
+++ b/arch/x86/kvm/svm/svm.h
@@ -728,6 +728,8 @@ void sev_snp_init_protected_guest_state(struct kvm_vcpu *vcpu);
int sev_update_mem_attr(struct kvm_memory_slot *slot, unsigned int attr,
gfn_t start, gfn_t end);
+bool sev_fault_is_private(struct kvm *kvm, gpa_t gpa, u64 error_code, bool *private_fault);
+
/* vmenter.S */
void __svm_sev_es_vcpu_run(struct vcpu_svm *svm, bool spec_ctrl_intercepted);
--
2.25.1
