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authorYinghai Lu <yhlu.kernel@gmail.com>2008-06-21 08:14:27 (GMT)
committerIngo Molnar <mingo@elte.hu>2008-07-08 10:48:32 (GMT)
commitce38cc79964687d3c7e92663bc040552416fca27 (patch)
treeab601c16dbb4c247e1696af45a20cc483333d7fb /arch/x86/kernel/cpu
parent3c999f142665265afd0fe9190204dd051f17e505 (diff)
downloadlinux-ce38cc79964687d3c7e92663bc040552416fca27.tar.xz
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>
Diffstat (limited to 'arch/x86/kernel/cpu')
-rw-r--r--arch/x86/kernel/cpu/amd_64.c22
1 files changed, 14 insertions, 8 deletions
diff --git a/arch/x86/kernel/cpu/amd_64.c b/arch/x86/kernel/cpu/amd_64.c
index 30b7557..958526d 100644
--- 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;