s390/kernel/guarded_storage.c

17 	kfree(tsk->thread.gs_cb);
23 	struct gs_cb *gs_cb;
25 	if (!current->thread.gs_cb) {
26 		gs_cb = kzalloc(sizeof(*gs_cb), GFP_KERNEL);
27 		if (!gs_cb)
29 		gs_cb->gsd = 25;
32 		load_gs_cb(gs_cb);
33 		current->thread.gs_cb = gs_cb;
41 	if (current->thread.gs_cb) {
43 		kfree(current->thread.gs_cb);
44 		current->thread.gs_cb = NULL;
51 static int gs_set_bc_cb(struct gs_cb __user *u_gs_cb)
53 	struct gs_cb *gs_cb;
55 	gs_cb = current->thread.gs_bc_cb;
56 	if (!gs_cb) {
57 		gs_cb = kzalloc(sizeof(*gs_cb), GFP_KERNEL);
58 		if (!gs_cb)
60 		current->thread.gs_bc_cb = gs_cb;
62 	if (copy_from_user(gs_cb, u_gs_cb, sizeof(*gs_cb)))
69 	struct gs_cb *gs_cb;
71 	gs_cb = current->thread.gs_bc_cb;
73 	kfree(gs_cb);
79 	struct gs_cb *gs_cb;
83 	gs_cb = current->thread.gs_bc_cb;
84 	if (gs_cb) {
85 		kfree(current->thread.gs_cb);
88 		load_gs_cb(gs_cb);
89 		current->thread.gs_cb = gs_cb;
110 		struct gs_cb __user *, gs_cb)
120 		return gs_set_bc_cb(gs_cb);