Implement KVM_CAP_MEMORY_FAULT_INFO for efaults from
kvm_vcpu_write_guest_page()
Signed-off-by: Anish Moorthy <amoorthy@xxxxxxxxxx>
---
virt/kvm/kvm_main.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 63b4285d858d1..b29a38af543f0 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -3119,8 +3119,11 @@ int kvm_vcpu_write_guest_page(struct kvm_vcpu *vcpu, gfn_t gfn,
const void *data, int offset, int len)
{
struct kvm_memory_slot *slot = kvm_vcpu_gfn_to_memslot(vcpu, gfn);
+ int ret = __kvm_write_guest_page(vcpu->kvm, slot, gfn, data, offset, len);
- return __kvm_write_guest_page(vcpu->kvm, 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_write_guest_page);
--
2.40.0.577.gac1e443424-goog
