Patchwork [31/37] KVM: PPC: booke: Readd debug abort code for machine check

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Submitter Alexander Graf
Date Feb. 24, 2012, 2:26 p.m.
Message ID <1330093591-19523-32-git-send-email-agraf@suse.de>
Download mbox | patch
Permalink /patch/142858/
State New
Headers show

Comments

Alexander Graf - Feb. 24, 2012, 2:26 p.m.
When during guest execution we get a machine check interrupt, we don't
know how to handle it yet. So let's add the error printing code back
again that we dropped accidently earlier and tell user space that something
went really wrong.

Signed-off-by: Alexander Graf <agraf@suse.de>
---
 arch/powerpc/kvm/booke.c |    7 ++++++-
 1 files changed, 6 insertions(+), 1 deletions(-)

Patch

diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c
index 288bc05..451ba16 100644
--- a/arch/powerpc/kvm/booke.c
+++ b/arch/powerpc/kvm/booke.c
@@ -632,7 +632,12 @@  int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu,
 
 	switch (exit_nr) {
 	case BOOKE_INTERRUPT_MACHINE_CHECK:
-		r = RESUME_GUEST;
+		printk("MACHINE CHECK: %lx\n", mfspr(SPRN_MCSR));
+		kvmppc_dump_vcpu(vcpu);
+		/* For debugging, send invalid exit reason to user space */
+		run->hw.hardware_exit_reason = ~1ULL << 32;
+		run->hw.hardware_exit_reason |= mfspr(SPRN_MCSR);
+		r = RESUME_HOST;
 		break;
 
 	case BOOKE_INTERRUPT_EXTERNAL: