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authorAlexander Graf <agraf@suse.de>2010-01-09 21:27:32 -0500
committerMarcelo Tosatti <mtosatti@redhat.com>2010-03-01 10:35:49 -0500
commit5f2b105a1d6a137c8cfb2792b79128db965880a8 (patch)
tree2dbc8b513c8d9c2aea40804f9f31b34442d0be41 /arch/powerpc/kvm
parentff1ca3f983c4180018dbf5e02f2af06f86ef6d03 (diff)
KVM: PPC: Pass through program interrupts
When we get a program interrupt in guest kernel mode, we try to emulate the instruction. If that doesn't fail, we report to the user and try again - at the exact same instruction pointer. So if the guest kernel really does trigger an invalid instruction, we loop forever. So let's better go and forward program exceptions to the guest when we don't know the instruction we're supposed to emulate. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/powerpc/kvm')
-rw-r--r--arch/powerpc/kvm/emulate.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/powerpc/kvm/emulate.c b/arch/powerpc/kvm/emulate.c
index 8b0ba0b69c2a..b905623735bd 100644
--- a/arch/powerpc/kvm/emulate.c
+++ b/arch/powerpc/kvm/emulate.c
@@ -476,6 +476,7 @@ int kvmppc_emulate_instruction(struct kvm_run *run, struct kvm_vcpu *vcpu)
476 advance = 0; 476 advance = 0;
477 printk(KERN_ERR "Couldn't emulate instruction 0x%08x " 477 printk(KERN_ERR "Couldn't emulate instruction 0x%08x "
478 "(op %d xop %d)\n", inst, get_op(inst), get_xop(inst)); 478 "(op %d xop %d)\n", inst, get_op(inst), get_xop(inst));
479 kvmppc_core_queue_program(vcpu, 0);
479 } 480 }
480 } 481 }
481 482