Implement KVM_CAP_MEMORY_FAULT_INFO for -EFAULTs caused by
kvm_handle_page_fault().
Signed-off-by: Anish Moorthy <amoorthy@xxxxxxxxxx>
---
arch/x86/kvm/mmu/mmu.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c
index 7391d1f75149d..937329bee654e 100644
--- a/arch/x86/kvm/mmu/mmu.c
+++ b/arch/x86/kvm/mmu/mmu.c
@@ -4371,8 +4371,11 @@ int kvm_handle_page_fault(struct kvm_vcpu *vcpu, u64 error_code,
#ifndef CONFIG_X86_64
/* A 64-bit CR2 should be impossible on 32-bit KVM. */
- if (WARN_ON_ONCE(fault_address >> 32))
+ if (WARN_ON_ONCE(fault_address >> 32)) {
+ kvm_populate_efault_info(vcpu, round_down(fault_address, PAGE_SIZE),
+ PAGE_SIZE);
return -EFAULT;
+ }
#endif
vcpu->arch.l1tf_flush_l1d = true;
--
2.40.0.577.gac1e443424-goog
