Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86: cpu_init(): fix memory leak when using CPU hotplug
  x86: pda_init(): fix memory leak when using CPU hotplug
  x86, xen: Use native_pte_flags instead of native_pte_val for .pte_flags
  x86: move mtrr cpu cap setting early in early_init_xxxx
  x86: delay early cpu initialization until cpuid is done
  x86: use X86_FEATURE_NOPL in alternatives
  x86: add NOPL as a synthetic CPU feature bit
  x86: boot: stub out unimplemented CPU feature words

1 files changed, 13 insertions, 23 deletions

diff --git a/arch/x86/kernel/alternative.c b/arch/x86/kernel/alternative.c
index 2763cb37b553..65a0c1b48696 100644
--- a/arch/x86/kernel/alternative.c
+++ b/arch/x86/kernel/alternative.c
@@ -145,35 +145,25 @@ static const unsigned char *const p6_nops[ASM_NOP_MAX+1] = {
 extern char __vsyscall_0;
 const unsigned char *const *find_nop_table(void)
 {
-        return boot_cpu_data.x86_vendor != X86_VENDOR_INTEL ||
-               boot_cpu_data.x86 < 6 ? k8_nops : p6_nops;
+        if (boot_cpu_data.x86_vendor == X86_VENDOR_INTEL &&
+            boot_cpu_has(X86_FEATURE_NOPL))
+                return p6_nops;
+        else
+                return k8_nops;
 }
 
 #else /* CONFIG_X86_64 */
 
-static const struct nop {
-        int cpuid;
-        const unsigned char *const *noptable;
-} noptypes[] = {
-        { X86_FEATURE_K8, k8_nops },
-        { X86_FEATURE_K7, k7_nops },
-        { X86_FEATURE_P4, p6_nops },
-        { X86_FEATURE_P3, p6_nops },
-        { -1, NULL }
-};
-
 const unsigned char *const *find_nop_table(void)
 {
-        const unsigned char *const *noptable = intel_nops;
-        int i;
-
-        for (i = 0; noptypes[i].cpuid >= 0; i++) {
-                if (boot_cpu_has(noptypes[i].cpuid)) {
-                        noptable = noptypes[i].noptable;
-                        break;
-                }
-        }
-        return noptable;
+        if (boot_cpu_has(X86_FEATURE_K8))
+                return k8_nops;
+        else if (boot_cpu_has(X86_FEATURE_K7))
+                return k7_nops;
+        else if (boot_cpu_has(X86_FEATURE_NOPL))
+                return p6_nops;
+        else
+                return intel_nops;
 }
 
 #endif /* CONFIG_X86_64 */