diff mbox series

[v3,11/22] KVM: x86: Annotate -EFAULTs from setup_vmgexit_scratch()

Message ID 20230412213510.1220557-12-amoorthy@google.com (mailing list archive)
State New, archived
Headers show
Series Improve scalability of KVM + userfaultfd live migration via annotated memory faults. | expand

Commit Message

Anish Moorthy April 12, 2023, 9:34 p.m. UTC 
Implement KVM_CAP_MEMORY_FAULT_INFO for efaults generated by
setup_vmgexit_scratch().

Signed-off-by: Anish Moorthy <amoorthy@google.com>
---
 arch/x86/kvm/svm/sev.c | 1 +
 1 file changed, 1 insertion(+)
diff mbox series

Patch

diff --git a/arch/x86/kvm/svm/sev.c b/arch/x86/kvm/svm/sev.c
index c25aeb550cd97..9ef121f71dc26 100644
--- a/arch/x86/kvm/svm/sev.c
+++ b/arch/x86/kvm/svm/sev.c
@@ -2683,6 +2683,7 @@  static int setup_vmgexit_scratch(struct vcpu_svm *svm, bool sync, u64 len)
 			pr_err("vmgexit: kvm_read_guest for scratch area failed\n");
 
 			kvfree(scratch_va);
+			kvm_populate_efault_info(&svm->vcpu, scratch_gpa_beg, len);
 			return -EFAULT;
 		}