Merge tag 'kvm-s390-master-6.6-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into HEAD

One small fix for gisa to avoid stalls.

Author: bonzini

arch/s390/kvm/interrupt.c

@@ -303,11 +303,6 @@ static inline u8 gisa_get_ipm_or_restore_iam(struct kvm_s390_gisa_interrupt *gi)
 	return 0;
 }
 
-static inline int gisa_in_alert_list(struct kvm_s390_gisa *gisa)
-{
-	return READ_ONCE(gisa->next_alert) != (u32)virt_to_phys(gisa);
-}
-
 static inline void gisa_set_ipm_gisc(struct kvm_s390_gisa *gisa, u32 gisc)
 {
 	set_bit_inv(IPM_BIT_OFFSET + gisc, (unsigned long *) gisa);
@@ -3216,11 +3211,12 @@ void kvm_s390_gisa_destroy(struct kvm *kvm)
 
 	if (!gi->origin)
 		return;
-	if (gi->alert.mask)
-		KVM_EVENT(3, "vm 0x%pK has unexpected iam 0x%02x",
-			  kvm, gi->alert.mask);
-	while (gisa_in_alert_list(gi->origin))
-		cpu_relax();
+	WARN(gi->alert.mask != 0x00,
+	     "unexpected non zero alert.mask 0x%02x",
+	     gi->alert.mask);
+	gi->alert.mask = 0x00;
+	if (gisa_set_iam(gi->origin, gi->alert.mask))
+		process_gib_alert_list();
 	hrtimer_cancel(&gi->timer);
 	gi->origin = NULL;
 	VM_EVENT(kvm, 3, "gisa 0x%pK destroyed", gisa);