Implement KVM_CAP_MEMORY_FAULT_INFO for efaults generated by
kvm_vcpu_read_guest_page().
Signed-off-by: Anish Moorthy <amoorthy@xxxxxxxxxx>
---
virt/kvm/kvm_main.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index b29a38af543f0..572adba9ad8ed 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -3014,7 +3014,11 @@ int kvm_vcpu_read_guest_page(struct kvm_vcpu *vcpu, gfn_t gfn, void *data,
{
struct kvm_memory_slot *slot = kvm_vcpu_gfn_to_memslot(vcpu, gfn);
- return __kvm_read_guest_page(slot, gfn, data, offset, len);
+ int ret = __kvm_read_guest_page(slot, gfn, data, offset, len);
+
+ if (ret == -EFAULT)
+ kvm_populate_efault_info(vcpu, gfn * PAGE_SIZE + offset, len);
+ return ret;
}
EXPORT_SYMBOL_GPL(kvm_vcpu_read_guest_page);
--
2.40.0.577.gac1e443424-goog
