linux-kernel - [PATCH 4/11] KVM: vmx: handle triple faults by returning EXIT_REASON

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Message-Id: <20070130144000.1F6DFA0014@il.qumranet.com>
Date:	Tue, 30 Jan 2007 14:40:00 -0000
From:	Avi Kivity <avi@...ranet.com>
To:	kvm-devel@...ts.sourceforge.net
Cc:	linux-kernel@...r.kernel.org, akpm@...l.org, mingo@...e.hu
Subject: [PATCH 4/11] KVM: vmx: handle triple faults by returning
	EXIT_REASON_SHUTDOWN to userspace

Just like svm.

Signed-off-by: Avi Kivity <avi@...ranet.com>

Index: linux-2.6/drivers/kvm/vmx.c
===================================================================
--- linux-2.6.orig/drivers/kvm/vmx.c
+++ linux-2.6/drivers/kvm/vmx.c
@@ -1373,6 +1373,11 @@ static int handle_external_interrupt(str
 	return 1;
 }
 
+static int handle_triple_fault(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
+{
+	kvm_run->exit_reason = KVM_EXIT_SHUTDOWN;
+	return 0;
+}
 
 static int get_io_count(struct kvm_vcpu *vcpu, u64 *count)
 {
@@ -1633,6 +1638,7 @@ static int (*kvm_vmx_exit_handlers[])(st
 				      struct kvm_run *kvm_run) = {
 	[EXIT_REASON_EXCEPTION_NMI]           = handle_exception,
 	[EXIT_REASON_EXTERNAL_INTERRUPT]      = handle_external_interrupt,
+	[EXIT_REASON_TRIPLE_FAULT]            = handle_triple_fault,
 	[EXIT_REASON_IO_INSTRUCTION]          = handle_io,
 	[EXIT_REASON_CR_ACCESS]               = handle_cr,
 	[EXIT_REASON_DR_ACCESS]               = handle_dr,
Index: linux-2.6/drivers/kvm/vmx.h
===================================================================
--- linux-2.6.orig/drivers/kvm/vmx.h
+++ linux-2.6/drivers/kvm/vmx.h
@@ -180,6 +180,7 @@ enum vmcs_field {
 
 #define EXIT_REASON_EXCEPTION_NMI       0
 #define EXIT_REASON_EXTERNAL_INTERRUPT  1
+#define EXIT_REASON_TRIPLE_FAULT        2
 
 #define EXIT_REASON_PENDING_INTERRUPT   7
 
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