Merge: s390/fpu: Re-add exception handling in load_fpu_state()

MR: https://gitlab.com/redhat/centos-stream/src/kernel/centos-stream-9/-/merge_requests/4937

  
JIRA: https://issues.redhat.com/browse/RHEL-39346  
  
Fix a crash when running stress-ng --opcode 8 on a s390x system.  
  
Signed-off-by: Aristeu Rozanski <arozansk@redhat.com>

Approved-by: Waiman Long <longman@redhat.com>
Approved-by: Steve Best <sbest@redhat.com>
Approved-by: Jay Shin <jaeshin@redhat.com>
Approved-by: CKI KWF Bot <cki-ci-bot+kwf-gitlab-com@redhat.com>

Merged-by: Lucas Zampieri <lzampier@redhat.com>

Author: zampierilucas

arch/s390/kernel/fpu.c

@@ -113,7 +113,7 @@ void load_fpu_state(struct fpu *state, int flags)
 	int mask;
 
 	if (flags & KERNEL_FPC)
-		fpu_lfpc(&state->fpc);
+		fpu_lfpc_safe(&state->fpc);
 	if (!cpu_has_vx()) {
 		if (flags & KERNEL_VXR_V0V7)
 			load_fp_regs_vx(state->vxrs);