Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6

[pandora-kernel.git] / arch / x86 / kernel / cpu / amd.c

diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c
index 28e5f59..63fddcd 100644 (file)
--- a/arch/x86/kernel/cpu/amd.c
+++ b/arch/x86/kernel/cpu/amd.c
@@ -356,7 +356,7 @@ static void __cpuinit early_init_amd(struct cpuinfo_x86 *c)
 #endif
 #if defined(CONFIG_X86_LOCAL_APIC) && defined(CONFIG_PCI)
        /* check CPU config space for extended APIC ID */
-       if (c->x86 >= 0xf) {
+       if (cpu_has_apic && c->x86 >= 0xf) {
                unsigned int val;
                val = read_pci_config(0, 24, 0, 0x68);
                if ((val & ((1 << 17) | (1 << 18))) == ((1 << 17) | (1 << 18)))
@@ -400,6 +400,13 @@ static void __cpuinit init_amd(struct cpuinfo_x86 *c)
                level = cpuid_eax(1);
                if((level >= 0x0f48 && level < 0x0f50) || level >= 0x0f58)
                        set_cpu_cap(c, X86_FEATURE_REP_GOOD);
+
+               /*
+                * Some BIOSes incorrectly force this feature, but only K8
+                * revision D (model = 0x14) and later actually support it.
+                */
+               if (c->x86_model < 0x14)
+                       clear_cpu_cap(c, X86_FEATURE_LAHF_LM);
        }
        if (c->x86 == 0x10 || c->x86 == 0x11)
                set_cpu_cap(c, X86_FEATURE_REP_GOOD);