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| author | Avi Kivity <avi@redhat.com> | 2009-11-04 11:59:01 +0200 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2009-12-03 09:32:24 +0200 |
| commit | 65ac7264043740572ba804edca03c374d70427c9 (patch) | |
| tree | 9adc0414526ed289a7f9d6ff7c2ae4e968113cd8 | |
| parent | a9c7399d6cda0a092b347f8ee49bbe44f6e1fe66 (diff) | |
| download | blackbird-op-linux-65ac7264043740572ba804edca03c374d70427c9.tar.gz blackbird-op-linux-65ac7264043740572ba804edca03c374d70427c9.zip | |
KVM: VMX: Report unexpected simultaneous exceptions as internal errors
These happen when we trap an exception when another exception is being
delivered; we only expect these with MCEs and page faults. If something
unexpected happens, things probably went south and we're better off reporting
an internal error and freezing.
Signed-off-by: Avi Kivity <avi@redhat.com>
| -rw-r--r-- | arch/x86/kvm/vmx.c | 11 | ||||
| -rw-r--r-- | include/linux/kvm.h | 1 |
2 files changed, 9 insertions, 3 deletions
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index c0e66dd58a47..22fcd27a0b58 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -2744,9 +2744,14 @@ static int handle_exception(struct kvm_vcpu *vcpu) return handle_machine_check(vcpu); if ((vect_info & VECTORING_INFO_VALID_MASK) && - !is_page_fault(intr_info)) - printk(KERN_ERR "%s: unexpected, vectoring info 0x%x " - "intr info 0x%x\n", __func__, vect_info, intr_info); + !is_page_fault(intr_info)) { + vcpu->run->exit_reason = KVM_EXIT_INTERNAL_ERROR; + vcpu->run->internal.suberror = KVM_INTERNAL_ERROR_SIMUL_EX; + vcpu->run->internal.ndata = 2; + vcpu->run->internal.data[0] = vect_info; + vcpu->run->internal.data[1] = intr_info; + return 0; + } if ((intr_info & INTR_INFO_INTR_TYPE_MASK) == INTR_TYPE_NMI_INTR) return 1; /* already handled by vmx_vcpu_run() */ diff --git a/include/linux/kvm.h b/include/linux/kvm.h index 172639e94392..976f4d181858 100644 --- a/include/linux/kvm.h +++ b/include/linux/kvm.h @@ -163,6 +163,7 @@ struct kvm_pit_config { /* For KVM_EXIT_INTERNAL_ERROR */ #define KVM_INTERNAL_ERROR_EMULATION 1 +#define KVM_INTERNAL_ERROR_SIMUL_EX 2 /* for KVM_RUN, returned by mmap(vcpu_fd, offset=0) */ struct kvm_run { |
