diff options
| author | Carsten Otte <cotte@de.ibm.com> | 2008-05-21 13:37:40 +0200 |
|---|---|---|
| committer | Avi Kivity <avi@qumranet.com> | 2008-05-22 12:17:34 +0300 |
| commit | 11f5ba9ffd728a64598c9da3c9ee20bd7505d62c (patch) | |
| tree | deb4f204e6ff63364c6c62d98b01c7fd75ab2c96 /arch/s390/kvm | |
| parent | 6324afe82b1fc7114e71deaafea16dc21baadc40 (diff) | |
KVM: s390: Send program check on access error
If the guest accesses non-existing memory, the sie64a function returns
-EFAULT. We must check the return value and send a program check to the
guest if the sie instruction faulted, otherwise the guest will loop at
the faulting code.
Signed-off-by: Christian Borntraeger <borntraeger@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, 4 insertions, 1 deletions
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c index a688c849e09b..4585c8ac2b0c 100644 --- a/arch/s390/kvm/kvm-s390.c +++ b/arch/s390/kvm/kvm-s390.c @@ -439,7 +439,10 @@ static void __vcpu_run(struct kvm_vcpu *vcpu) local_irq_enable(); VCPU_EVENT(vcpu, 6, "entering sie flags %x", atomic_read(&vcpu->arch.sie_block->cpuflags)); - sie64a(vcpu->arch.sie_block, vcpu->arch.guest_gprs); + if (sie64a(vcpu->arch.sie_block, vcpu->arch.guest_gprs)) { + VCPU_EVENT(vcpu, 3, "%s", "fault in sie instruction"); + kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING); + } VCPU_EVENT(vcpu, 6, "exit sie icptcode %d", vcpu->arch.sie_block->icptcode); local_irq_disable(); |