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authorFlorian Tobias Schandinat <FlorianSchandinat@gmx.de>2011-11-21 23:42:06 +0000
committerFlorian Tobias Schandinat <FlorianSchandinat@gmx.de>2011-11-21 23:42:06 +0000
commit300e812db26f4aa022e346f5fb9af1af134d98d8 (patch)
tree382b45253a704087e8aa0c770bf3fc2ad67d4b02 /arch/x86/lguest/boot.c
parent4420dd2b306f1997232a13462bca0d420be5b1b8 (diff)
parentcfcfc9eca2bcbd26a8e206baeb005b055dbf8e37 (diff)
Merge commit 'v3.2-rc2' into fbdev-next
Diffstat (limited to 'arch/x86/lguest/boot.c')
-rw-r--r--arch/x86/lguest/boot.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/x86/lguest/boot.c b/arch/x86/lguest/boot.c
index 13ee258442a..cf4603ba866 100644
--- a/arch/x86/lguest/boot.c
+++ b/arch/x86/lguest/boot.c
@@ -56,6 +56,7 @@
#include <linux/lguest_launcher.h>
#include <linux/virtio_console.h>
#include <linux/pm.h>
+#include <linux/export.h>
#include <asm/apic.h>
#include <asm/lguest.h>
#include <asm/paravirt.h>
@@ -70,6 +71,7 @@
#include <asm/i387.h>
#include <asm/stackprotector.h>
#include <asm/reboot.h> /* for struct machine_ops */
+#include <asm/kvm_para.h>
/*G:010
* Welcome to the Guest!
@@ -455,6 +457,15 @@ static void lguest_cpuid(unsigned int *ax, unsigned int *bx,
*ax &= 0xFFFFF0FF;
*ax |= 0x00000500;
break;
+
+ /*
+ * This is used to detect if we're running under KVM. We might be,
+ * but that's a Host matter, not us. So say we're not.
+ */
+ case KVM_CPUID_SIGNATURE:
+ *bx = *cx = *dx = 0;
+ break;
+
/*
* 0x80000000 returns the highest Extended Function, so we futureproof
* like we do above by limiting it to known fields.