From: Alexander Graf Date: Sun, 10 Jan 2010 02:27:32 +0000 (+0100) Subject: KVM: PPC: Pass through program interrupts X-Git-Tag: firefly_0821_release~9833^2~3015^2~90 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=5f2b105a1d6a137c8cfb2792b79128db965880a8;p=firefly-linux-kernel-4.4.55.git 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 Signed-off-by: Avi Kivity --- 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) advance = 0; printk(KERN_ERR "Couldn't emulate instruction 0x%08x " "(op %d xop %d)\n", inst, get_op(inst), get_xop(inst)); + kvmppc_core_queue_program(vcpu, 0); } }