From: Paul Mackerras <paulus@samba.org>
To: Alexander Graf <agraf@suse.de>, kvm-ppc@vger.kernel.org
Cc: kvm@vger.kernel.org
Subject: [PATCH 05/18] KVM: PPC: Book3S HV: Don't crash host on unknown guest interrupt
Date: Fri, 20 Sep 2013 14:52:41 +1000 [thread overview]
Message-ID: <1379652774-10106-6-git-send-email-paulus@samba.org> (raw)
In-Reply-To: <1379652774-10106-1-git-send-email-paulus@samba.org>
If we come out of a guest with an interrupt that we don't know about,
instead of crashing the host with a BUG(), we now return to userspace
with the exit reason set to KVM_EXIT_UNKNOWN and the trap vector in
the hw.hardware_exit_reason field of the kvm_run structure, as is done
on x86. Note that run->exit_reason is already set to KVM_EXIT_UNKNOWN
at the beginning of kvmppc_handle_exit().
Signed-off-by: Paul Mackerras <paulus@samba.org>
---
arch/powerpc/kvm/book3s_hv.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c
index 373e202..cce2c20 100644
--- a/arch/powerpc/kvm/book3s_hv.c
+++ b/arch/powerpc/kvm/book3s_hv.c
@@ -709,8 +709,8 @@ static int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu,
printk(KERN_EMERG "trap=0x%x | pc=0x%lx | msr=0x%llx\n",
vcpu->arch.trap, kvmppc_get_pc(vcpu),
vcpu->arch.shregs.msr);
+ run->hw.hardware_exit_reason = vcpu->arch.trap;
r = RESUME_HOST;
- BUG();
break;
}
--
1.8.4.rc3
next prev parent reply other threads:[~2013-09-20 4:52 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-09-20 4:52 [PATCH 00/18] KVM: PPC: Fixes for PR and preparation for POWER8 Paul Mackerras
2013-09-20 4:52 ` [PATCH 01/18] KVM: PPC: BookE: Add GET/SET_ONE_REG interface for VRSAVE Paul Mackerras
2013-09-20 4:52 ` [PATCH 02/18] KVM: PPC: Book3S HV: Store LPCR value for each virtual core Paul Mackerras
2013-09-20 4:52 ` [PATCH 03/18] KVM: PPC: Book3S HV: Add support for guest Program Priority Register Paul Mackerras
2013-09-20 4:52 ` [PATCH 04/18] KVM: PPC: Book3S HV: Support POWER6 compatibility mode on POWER7 Paul Mackerras
2013-09-21 4:33 ` Paul Mackerras
2013-09-21 4:35 ` [PATCH v2 " Paul Mackerras
2013-09-20 4:52 ` Paul Mackerras [this message]
2013-09-20 4:52 ` [PATCH 06/18] KVM: PPC: Book3S PR: Fix compilation without CONFIG_ALTIVEC Paul Mackerras
2013-09-20 4:52 ` [PATCH 07/18] KVM: PPC: Book3S PR: Keep volatile reg values in vcpu rather than shadow_vcpu Paul Mackerras
2013-09-20 4:52 ` [PATCH 08/18] KVM: PPC: Book3S PR: Allow guest to use 64k pages Paul Mackerras
2013-09-20 4:52 ` [PATCH 09/18] KVM: PPC: Book3S PR: Use 64k host pages where possible Paul Mackerras
2013-09-20 4:52 ` [PATCH 10/18] KVM: PPC: Book3S PR: Handle PP0 page-protection bit in guest HPTEs Paul Mackerras
2013-09-20 4:52 ` [PATCH 11/18] KVM: PPC: Book3S PR: Correct errors in H_ENTER implementation Paul Mackerras
2013-09-20 4:52 ` [PATCH 12/18] KVM: PPC: Book3S PR: Make HPT accesses and updates SMP-safe Paul Mackerras
2013-09-20 4:52 ` [PATCH 13/18] KVM: PPC: Book3S PR: Allocate kvm_vcpu structs from kvm_vcpu_cache Paul Mackerras
2013-09-20 4:52 ` [PATCH 14/18] KVM: PPC: Book3S: Move skip-interrupt handlers to common code Paul Mackerras
2013-09-20 4:52 ` [PATCH 15/18] KVM: PPC: Book3S PR: Better handling of host-side read-only pages Paul Mackerras
2013-09-20 4:52 ` [PATCH 16/18] KVM: PPC: Book3S PR: Use mmu_notifier_retry() in kvmppc_mmu_map_page() Paul Mackerras
2013-09-20 4:52 ` [PATCH 17/18] KVM: PPC: Book3S PR: Mark pages accessed, and dirty if being written Paul Mackerras
2013-09-20 4:52 ` [PATCH 18/18] KVM: PPC: Book3S PR: Reduce number of shadow PTEs invalidated by MMU notifiers Paul Mackerras
2013-09-25 23:29 ` [PATCH 00/18] KVM: PPC: Fixes for PR and preparation for POWER8 Alexander Graf
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