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| author | Christian Borntraeger <borntraeger@de.ibm.com> | 2008-05-21 13:37:34 +0200 |
|---|---|---|
| committer | Avi Kivity <avi@qumranet.com> | 2008-06-06 20:08:26 +0200 |
| commit | 71cde5879f10b639506bc0b9f29a89f58b42a17e (patch) | |
| tree | 5e8e8da042eede41ef4b9b74fd14e959e61f5b4a /arch/s390/kvm | |
| parent | KVM: s390: fix locking order problem in enable_sie (diff) | |
| download | linux-71cde5879f10b639506bc0b9f29a89f58b42a17e.tar.xz linux-71cde5879f10b639506bc0b9f29a89f58b42a17e.zip | |
KVM: s390: handle machine checks when guest is running
The low-level interrupt handler on s390 checks for _TIF_WORK_INT and
exits the guest context, if work is pending.
TIF_WORK_INT is defined as_TIF_SIGPENDING | _TIF_NEED_RESCHED |
_TIF_MCCK_PENDING. Currently the sie loop checks for signals and
reschedule, but it does not check for machine checks. That means that
we exit the guest context if a machine check is pending, but we do not
handle the machine check.
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
CC: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
Diffstat (limited to 'arch/s390/kvm')
| -rw-r--r-- | arch/s390/kvm/kvm-s390.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c index 0ac36a649eba..40e4f2de7320 100644 --- a/arch/s390/kvm/kvm-s390.c +++ b/arch/s390/kvm/kvm-s390.c @@ -423,6 +423,8 @@ int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu, return -EINVAL; /* not implemented yet */ } +extern void s390_handle_mcck(void); + static void __vcpu_run(struct kvm_vcpu *vcpu) { memcpy(&vcpu->arch.sie_block->gg14, &vcpu->arch.guest_gprs[14], 16); @@ -430,6 +432,9 @@ static void __vcpu_run(struct kvm_vcpu *vcpu) if (need_resched()) schedule(); + if (test_thread_flag(TIF_MCCK_PENDING)) + s390_handle_mcck(); + vcpu->arch.sie_block->icptcode = 0; local_irq_disable(); kvm_guest_enter(); |