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| author | Paolo Bonzini <pbonzini@redhat.com> | 2023-10-12 11:05:50 -0400 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2023-10-12 11:08:57 -0400 |
| commit | 4bcd9bc629a5d273442fee75a0cc56ea84be08ed (patch) | |
| tree | fc42e9b774f89479b15f29ce5337790d22bcfc72 /arch | |
| parent | 401644852d0b2a278811de38081be23f74b5bb04 (diff) | |
| parent | f87ef5723536a6545ed9c43e18b13a9faceb3c80 (diff) | |
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.
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/s390/kvm/interrupt.c | 16 |
1 files changed, 6 insertions, 10 deletions
diff --git a/arch/s390/kvm/interrupt.c b/arch/s390/kvm/interrupt.c index c1b47d608a2b..efaebba5ee19 100644 --- a/arch/s390/kvm/interrupt.c +++ b/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); |