libkvmi: add kvmi_alloc_gfn, kvmi_free_gfn, kvmi_create_ept_view, kvmi_destroy_ept_view

include/libkvmi.h

@@ -137,11 +137,15 @@ 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 );
 size_t  kvmi_get_pending_events( void *dom );
 int     kvmi_change_gfn( void *dom, unsigned short vcpu, __u64 old_gfn, __u64 new_gfn );
+int     kvmi_alloc_gfn( void *dom, __u64 gfn );
+int     kvmi_free_gfn( void *dom, __u64 gfn );
 
 #ifdef __cplusplus
 }

include/linux/kvmi.h

@@ -53,6 +53,10 @@ enum {
 	KVMI_VCPU_GET_XCR            = 37,
 	KVMI_VCPU_SET_XSAVE          = 38,
 	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,
@@ -343,6 +347,24 @@ struct kvmi_vcpu_change_gfn {
 	__u64 new_gfn;
 };
 
+struct kvmi_vcpu_alloc_gfn {
+	__u64 gfn;
+};
+
+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

@@ -2714,3 +2714,43 @@ int kvmi_change_gfn( void *dom, unsigned short vcpu, __u64 old_gfn, __u64 new_gf
 
 	return request( dom, KVMI_VCPU_CHANGE_GFN, &req, sizeof( req ), NULL, NULL );
 }
+
+int kvmi_alloc_gfn( void *dom, __u64 gfn )
+{
+	struct {
+		struct kvmi_vcpu_hdr        vcpu;
+		struct kvmi_vcpu_alloc_gfn  cmd;
+	} req = { .vcpu = { .vcpu = 0 }, .cmd = { .gfn = gfn } };
+
+	return request( dom, KVMI_VCPU_ALLOC_GFN, &req, sizeof( req ), NULL, NULL );
+}
+
+int kvmi_free_gfn( void *dom, __u64 gfn )
+{
+	struct {
+		struct kvmi_vcpu_hdr        vcpu;
+		struct kvmi_vcpu_free_gfn   cmd;
+	} req = { .vcpu = { .vcpu = 0 }, .cmd = { .gfn = 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

@@ -67,6 +67,10 @@ KVMI_1.0 {
 		kvmi_disable_ve;
 		kvmi_get_ept_view;
 		kvmi_control_ept_view;
+		kvmi_alloc_gfn;
+		kvmi_free_gfn;
+		kvmi_create_ept_view;
+		kvmi_destroy_ept_view;
 	local:
 		*;
 };