[RFC PATCH 06/18] KVM: Add KVM_MEMORY_EXIT_FLAG_USERFAULT

James Houghton
2024-07-10T23:42:44Z

This is needed to support returning to userspace when a vCPU attempts to
access a userfault gfn.

Signed-off-by: James Houghton <jthoughton@google.com>
---
include/uapi/linux/kvm.h | 1 +
1 file changed, 1 insertion(+)

diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h
index c84c24a9678e..6aa99b4587c6 100644
--- a/include/uapi/linux/kvm.h
+++ b/include/uapi/linux/kvm.h
@@ -429,6 +429,7 @@ struct kvm_run {
/* KVM_EXIT_MEMORY_FAULT */
struct {
#define KVM_MEMORY_EXIT_FLAG_PRIVATE (1ULL << 3)
+#define KVM_MEMORY_EXIT_FLAG_USERFAULT (1ULL << 4)
__u64 flags;
__u64 gpa;
__u64 size;
--
2.45.2.993.g49e7a77208-goog