AuxXxilium/linux_dsm_epyc7002
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x86: clean up init_amd()

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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>
This commit is contained in:
Yinghai Lu 2008-06-21 01:14:27 -07:00 committed by Ingo Molnar
parent 3c999f1426
commit ce38cc7996
2 changed files with 14 additions and 12 deletions
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22
arch/x86/kernel/cpu/amd_64.c
View File

@ -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;

4
arch/x86/kernel/setup_64.c
View File

@ -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] = {};