diff options
| author |   Alexander Graf <agraf@suse.de> | 2010-04-20 02:49:50 +0200 |
|---|---|---|
| committer |   Avi Kivity <avi@redhat.com> | 2010-05-17 12:19:02 +0300 |
| commit | ac21467182e562a71d8b4e098ea054e42700c0ff (patch) | |
| tree | 814b2d6d7d11b21801be229476209bd16f156ea5 | |
| parent | KVM: PPC: Make Alignment interrupts work again (diff) | |
| download | linux-dev-ac21467182e562a71d8b4e098ea054e42700c0ff.tar.xz linux-dev-ac21467182e562a71d8b4e098ea054e42700c0ff.zip | |
KVM: PPC: Be more informative on BUG
We have a condition in the ppc64 host mmu code that should never occur.
Unfortunately, it just did happen to me and I was rather puzzled on why,
because BUG_ON doesn't tell me anything useful.
So let's add some more debug output in case this goes wrong. Also change
BUG to WARN, since I don't want to reboot every time I mess something up.
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Avi Kivity <avi@redhat.com>
| -rw-r--r-- | arch/powerpc/kvm/book3s_64_mmu_host.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/arch/powerpc/kvm/book3s_64_mmu_host.c b/arch/powerpc/kvm/book3s_64_mmu_host.c index 41af12fb1260..5545c45ea57f 100644 --- a/arch/powerpc/kvm/book3s_64_mmu_host.c +++ b/arch/powerpc/kvm/book3s_64_mmu_host.c @@ -231,10 +231,16 @@ int kvmppc_mmu_map_page(struct kvm_vcpu *vcpu, struct kvmppc_pte *orig_pte) vcpu->arch.mmu.esid_to_vsid(vcpu, orig_pte->eaddr >> SID_SHIFT, &vsid); map = find_sid_vsid(vcpu, vsid); if (!map) { - kvmppc_mmu_map_segment(vcpu, orig_pte->eaddr); + ret = kvmppc_mmu_map_segment(vcpu, orig_pte->eaddr); + WARN_ON(ret < 0); map = find_sid_vsid(vcpu, vsid); } - BUG_ON(!map); + if (!map) { + printk(KERN_ERR "KVM: Segment map for 0x%llx (0x%lx) failed\n", + vsid, orig_pte->eaddr); + WARN_ON(true); + return -EINVAL; + } vsid = map->host_vsid; va = hpt_va(orig_pte->eaddr, vsid, MMU_SEGSIZE_256M); |