@@ -522,6 +522,11 @@ struct fpu_guest {
*/
u64 xfd_err;
+ /*
+ * @uabi_size: Size required for save/restore
+ */
+ unsigned int uabi_size;
+
/*
* @fpstate: Pointer to the allocated guest fpstate
*/
@@ -240,6 +240,7 @@ bool fpu_alloc_guest_fpstate(struct fpu_guest *gfpu)
gfpu->fpstate = fpstate;
gfpu->xfeatures = fpu_user_cfg.default_features;
gfpu->perm = fpu_user_cfg.default_features;
+ gfpu->uabi_size = fpu_user_cfg.default_size;
fpu_init_guest_permissions(gfpu);
return true;
@@ -1545,6 +1545,7 @@ static int fpstate_realloc(u64 xfeatures, unsigned int ksize,
newfps->is_confidential = curfps->is_confidential;
newfps->in_use = curfps->in_use;
guest_fpu->xfeatures |= xfeatures;
+ guest_fpu->uabi_size = usize;
}
fpregs_lock();