@@ -210,11 +210,14 @@ int fpu__copy(struct fpu *dst_fpu, struct fpu *src_fpu)
* ( The function 'fails' in the FNSAVE case, which destroys
* register contents so we have to copy them back. )
*/
- if (!copy_fpregs_to_fpstate(dst_fpu)) {
+ __fpregs_changes_begin();
+ if (test_thread_flag(TIF_LOAD_FPU)) {
+ memcpy(&src_fpu->state, &dst_fpu->state, fpu_kernel_xstate_size);
+ } else if (!copy_fpregs_to_fpstate(dst_fpu)) {
memcpy(&src_fpu->state, &dst_fpu->state, fpu_kernel_xstate_size);
copy_kernel_to_fpregs(&src_fpu->state);
}
-
+ __fpregs_changes_end();
trace_x86_fpu_copy_src(src_fpu);
trace_x86_fpu_copy_dst(dst_fpu);