libkvmi: add kvmi_create_ept_view and kvmi_destroy_ept_view

include/libkvmi.h

@@ -137,6 +137,8 @@ int     kvmi_set_ept_page_conv( void *dom, unsigned short index, unsigned long l
 int     kvmi_get_ept_page_conv( void *dom, unsigned short index, unsigned long long gpa, bool *sve );
 int     kvmi_switch_ept_view( void *dom, unsigned short vcpu, unsigned short view );
 int     kvmi_disable_ve( void *dom, unsigned short vcpu );
+int     kvmi_create_ept_view( void *dom, unsigned short *view );
+int     kvmi_destroy_ept_view( void *dom, unsigned short view );
 int     kvmi_get_ept_view( void *dom, unsigned short vcpu, unsigned short *view );
 int     kvmi_control_ept_view( void *dom, unsigned short vcpu, unsigned short view, bool visible );
 bool    kvmi_remote_mapping_v2( void );

include/linux/kvmi.h

@@ -55,6 +55,8 @@ enum {
 	KVMI_QUERY_PHYSICAL          = 39,
 	KVMI_VCPU_ALLOC_GFN          = 41,
 	KVMI_VCPU_FREE_GFN           = 42,
+	KVMI_CREATE_EPT_VIEW         = 43,
+	KVMI_DESTROY_EPT_VIEW        = 44,
 	KVMI_VCPU_CHANGE_GFN         = 60,
 
 	KVMI_VCPU_CONTROL_SINGLESTEP = 63,
@@ -353,6 +355,16 @@ struct kvmi_vcpu_free_gfn {
 	__u64 gfn;
 };
 
+struct kvmi_create_ept_view_reply {
+	__u16 view;
+	__u16 pad[3];
+};
+
+struct kvmi_destroy_ept_view {
+	__u16 view;
+	__u16 pad[3];
+};
+
 /*
  * ioctls for /dev/kvmmem
  */

src/kvmi.c

@@ -2734,3 +2734,23 @@ int kvmi_free_gfn( void *dom, __u64 gfn )
 
 	return request( dom, KVMI_VCPU_FREE_GFN, &req, sizeof( req ), NULL, NULL );
 }
+
+int kvmi_create_ept_view( void *dom, unsigned short *view )
+{
+	struct kvmi_create_ept_view_reply rpl;
+	int                               err;
+	size_t                            received = sizeof( rpl );
+
+	err = request( dom, KVMI_CREATE_EPT_VIEW, NULL, 0, &rpl, &received );
+	if ( !err && view )
+		*view = rpl.view;
+
+	return err;
+}
+
+int kvmi_destroy_ept_view( void *dom, unsigned short view )
+{
+	struct kvmi_destroy_ept_view req = { .view = view };
+
+	return request( dom, KVMI_DESTROY_EPT_VIEW, &req, sizeof( req ), NULL, 0 );
+}

src/version.ld

@@ -69,6 +69,8 @@ KVMI_1.0 {
 		kvmi_control_ept_view;
 		kvmi_alloc_gfn;
 		kvmi_free_gfn;
+		kvmi_create_ept_view;
+		kvmi_destroy_ept_view;
 	local:
 		*;
 };