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| author | Carsten Otte <cotte@de.ibm.com> | 2008-05-21 13:37:40 +0200 |
|---|---|---|
| committer | Avi Kivity <avi@qumranet.com> | 2008-06-06 21:08:26 +0300 |
| commit | 1f0d0f094df9a570dfc26d5eb825986b7e165e1d (patch) | |
| tree | 4f598069f3a17c926deb70bbbd3d088d881efbfc /arch/s390/kvm | |
| parent | 0ff318674503ce3787ef62d84f4d948db204b268 (diff) | |
| download | linux-1f0d0f094df9a570dfc26d5eb825986b7e165e1d.tar.bz2 | |
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 ded27c7777cc..6558b09ff579 100644 --- a/arch/s390/kvm/kvm-s390.c +++ b/arch/s390/kvm/kvm-s390.c @@ -443,7 +443,10 @@ 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(); |