x86: clean up init_amd()

1. move out calling of check_enable_amd_mmconf_dmi out of setup_64.c
   put it into init_amd(), so don't need to make extra dmi check for
   system with other cpus.
2. 15 --> 0xf

Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/arch/x86/kernel/cpu/amd_64.c b/arch/x86/kernel/cpu/amd_64.c
index 30b7557..958526d 100644 (file)
--- a/arch/x86/kernel/cpu/amd_64.c
+++ b/arch/x86/kernel/cpu/amd_64.c
@@ -131,7 +131,7 @@ static void __cpuinit init_amd(struct cpuinfo_x86 *c)
         * Errata 63 for SH-B3 steppings
         * Errata 122 for all steppings (F+ have it disabled by default)
         */
-       if (c->x86 == 15) {
+       if (c->x86 == 0xf) {
                rdmsrl(MSR_K8_HWCR, value);
                value |= 1 << 6;
                wrmsrl(MSR_K8_HWCR, value);
@@ -143,10 +143,11 @@ static void __cpuinit init_amd(struct cpuinfo_x86 *c)
        clear_cpu_cap(c, 0*32+31);
 
        /* On C+ stepping K8 rep microcode works well for copy/memset */
-       level = cpuid_eax(1);
-       if (c->x86 == 15 && ((level >= 0x0f48 && level < 0x0f50) ||
-                            level >= 0x0f58))
-               set_cpu_cap(c, X86_FEATURE_REP_GOOD);
+       if (c->x86 == 0xf) {
+               level = cpuid_eax(1);
+               if((level >= 0x0f48 && level < 0x0f50) || level >= 0x0f58)
+                       set_cpu_cap(c, X86_FEATURE_REP_GOOD);
+       }
        if (c->x86 == 0x10 || c->x86 == 0x11)
                set_cpu_cap(c, X86_FEATURE_REP_GOOD);
 
@@ -157,7 +158,7 @@ static void __cpuinit init_amd(struct cpuinfo_x86 *c)
        level = get_model_name(c);
        if (!level) {
                switch (c->x86) {
-               case 15:
+               case 0xf:
                        /* Should distinguish Models here, but this is only
                           a fallback anyways. */
                        strcpy(c->x86_model_id, "Hammer");
@@ -176,14 +177,19 @@ static void __cpuinit init_amd(struct cpuinfo_x86 *c)
        else
                num_cache_leaves = 3;
 
-       if (c->x86 == 0xf || c->x86 == 0x10 || c->x86 == 0x11)
+       if (c->x86 >= 0xf && c->x86 <= 0x11)
                set_cpu_cap(c, X86_FEATURE_K8);
 
        /* MFENCE stops RDTSC speculation */
        set_cpu_cap(c, X86_FEATURE_MFENCE_RDTSC);
 
-       if (c->x86 == 0x10)
+       if (c->x86 == 0x10) {
+               /* do this for boot cpu */
+               if (c == &boot_cpu_data)
+                       check_enable_amd_mmconf_dmi();
+
                fam10h_check_enable_mmcfg();
+       }
 
        if (c == &boot_cpu_data && c->x86 >= 0xf && c->x86 <= 0x11) {
                unsigned long long tseg;

diff --git a/arch/x86/kernel/setup_64.c b/arch/x86/kernel/setup_64.c
index 175c696..c94464a 100644 (file)
--- a/arch/x86/kernel/setup_64.c
+++ b/arch/x86/kernel/setup_64.c
@@ -72,7 +72,6 @@
 #include <asm/topology.h>
 #include <asm/trampoline.h>
 #include <asm/pat.h>
-#include <asm/mmconfig.h>
 
 #include <mach_apic.h>
 #ifdef CONFIG_PARAVIRT
@@ -474,9 +473,6 @@ void __init setup_arch(char **cmdline_p)
        conswitchp = &dummy_con;
 #endif
 #endif
-
-       /* do this before identify_cpu for boot cpu */
-       check_enable_amd_mmconf_dmi();
 }
 
 struct cpu_dev *cpu_devs[X86_VENDOR_NUM] = {};