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authorEduardo Habkost <ehabkost@redhat.com>2008-11-17 19:03:20 -0200
committerAvi Kivity <avi@redhat.com>2008-12-31 16:52:29 +0200
commit63d1142f8f69e39468bc6079ab2239e902828134 (patch)
tree1f6b12fca77403b7ee3323b2ef18ef53e5593094 /arch/x86/kvm
parent6aa07a0d77f6aafbe69e4e8609ffaf2b7ee1b591 (diff)
KVM: SVM: move has_svm() code to asm/virtext.h
Use a trick to keep the printk()s on has_svm() working as before. gcc will take care of not generating code for the 'msg' stuff when the function is called with a NULL msg argument. Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/x86/kvm')
-rw-r--r--arch/x86/kvm/svm.c19
1 files changed, 5 insertions, 14 deletions
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index f0ad4d4217e..0667c6d13d3 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -28,6 +28,8 @@
#include <asm/desc.h>
+#include <asm/virtext.h>
+
#define __ex(x) __kvm_handle_fault_on_reboot(x)
MODULE_AUTHOR("Qumranet");
@@ -245,24 +247,13 @@ static void skip_emulated_instruction(struct kvm_vcpu *vcpu)
static int has_svm(void)
{
- uint32_t eax, ebx, ecx, edx;
-
- if (boot_cpu_data.x86_vendor != X86_VENDOR_AMD) {
- printk(KERN_INFO "has_svm: not amd\n");
- return 0;
- }
+ const char *msg;
- cpuid(0x80000000, &eax, &ebx, &ecx, &edx);
- if (eax < SVM_CPUID_FUNC) {
- printk(KERN_INFO "has_svm: can't execute cpuid_8000000a\n");
+ if (!cpu_has_svm(&msg)) {
+ printk(KERN_INFO "has_svn: %s\n", msg);
return 0;
}
- cpuid(0x80000001, &eax, &ebx, &ecx, &edx);
- if (!(ecx & (1 << SVM_CPUID_FEATURE_SHIFT))) {
- printk(KERN_DEBUG "has_svm: svm not available\n");
- return 0;
- }
return 1;
}