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KVM: ia64: Add handler for crashed vmm

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Since vmm runs in an isolated address space and it is just a copy
of host's kvm-intel module, so once vmm crashes, we just crash all guests
running on it instead of crashing whole kernel.

Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Xiantao Zhang
2008-11-21 17:16:07 +08:00
committed by Avi Kivity
parent 5e2be19832
commit 9f7d5bb5e2
4 changed files with 44 additions and 12 deletions
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20
arch/ia64/kvm/process.c
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@@ -942,8 +942,20 @@ static void vcpu_do_resume(struct kvm_vcpu *vcpu)
ia64_set_pta(vcpu->arch.vhpt.pta.val);
}
static void vmm_sanity_check(struct kvm_vcpu *vcpu)
{
struct exit_ctl_data *p = &vcpu->arch.exit_data;
if (!vmm_sanity && p->exit_reason != EXIT_REASON_DEBUG) {
panic_vm(vcpu, "Failed to do vmm sanity check,"
"it maybe caused by crashed vmm!!\n\n");
}
}
static void kvm_do_resume_op(struct kvm_vcpu *vcpu)
{
vmm_sanity_check(vcpu); /*Guarantee vcpu runing on healthy vmm!*/
if (test_and_clear_bit(KVM_REQ_RESUME, &vcpu->requests)) {
vcpu_do_resume(vcpu);
return;
@@ -969,3 +981,11 @@ void vmm_transition(struct kvm_vcpu *vcpu)
1, 0, 0, 0, 0, 0);
kvm_do_resume_op(vcpu);
}
void vmm_panic_handler(u64 vec)
{
struct kvm_vcpu *vcpu = current_vcpu;
vmm_sanity = 0;
panic_vm(vcpu, "Unexpected interruption occurs in VMM, vector:0x%lx\n",
vec2off[vec]);
}