[PATCH] KVM: Use boot_cpu_data instead of current_cpu_data

current_cpu_data invokes smp_processor_id(), which is inadvisable when
preemption is enabled.  Switch to boot_cpu_data instead.

Resolves sourceforge bug 1621401.
Signed-off-by: Avi Kivity <avi@qumranet.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

drivers/kvm/svm.c

@@ -246,7 +246,7 @@ static int has_svm(void)
 {
 	uint32_t eax, ebx, ecx, edx;
 
-	if (current_cpu_data.x86_vendor != X86_VENDOR_AMD) {
+	if (boot_cpu_data.x86_vendor != X86_VENDOR_AMD) {
 		printk(KERN_INFO "has_svm: not amd\n");
 		return 0;
 	}