For private memslots, GHCB page state change requests will be forwarded
to userspace for processing. Define a new KVM_EXIT_VMGEXIT for exits of
this type.
Signed-off-by: Michael Roth <michael.roth@xxxxxxx>
---
include/uapi/linux/kvm.h | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h
index 2bab08a5b5d7..6e684bf5f723 100644
--- a/include/uapi/linux/kvm.h
+++ b/include/uapi/linux/kvm.h
@@ -279,6 +279,7 @@ struct kvm_xen_exit {
#define KVM_EXIT_RISCV_CSR 36
#define KVM_EXIT_NOTIFY 37
#define KVM_EXIT_MEMORY_FAULT 38
+#define KVM_EXIT_VMGEXIT 50
/* For KVM_EXIT_INTERNAL_ERROR */
/* Emulate instruction failed. */
@@ -527,6 +528,11 @@ struct kvm_run {
__u64 gpa;
__u64 size;
} memory;
+ /* KVM_EXIT_VMGEXIT */
+ struct {
+ __u64 ghcb_msr; /* GHCB MSR contents */
+ __u8 error; /* user -> kernel */
+ } vmgexit;
/* Fix the size of the union. */
char padding[256];
};
--
2.25.1
