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x86, AMD: Clean up init_amd()

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Clean up multiple declarations of variable used for rd/wrmsr.

Signed-off-by: Boris Ostrovsky <boris.ostrovsky@amd.com>
Link: http://lkml.kernel.org/r/1359495136-23244-1-git-send-email-ostr@amd64.org
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
This commit is contained in:
Boris Ostrovsky 2013-01-29 16:32:16 -05:00 committed by H. Peter Anvin
parent 349eab6eb0
commit 6bf08a8dcd
1 changed files with 12 additions and 17 deletions
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29
arch/x86/kernel/cpu/amd.c
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@ -518,10 +518,9 @@ static void __cpuinit early_init_amd(struct cpuinfo_x86 *c)
static void __cpuinit init_amd(struct cpuinfo_x86 *c)
{
u32 dummy;
#ifdef CONFIG_SMP
unsigned long long value;
#ifdef CONFIG_SMP
/*
* Disable TLB flush filter by setting HWCR.FFDIS on K8
* bit 6 of msr C001_0015
@ -559,12 +558,10 @@ static void __cpuinit init_amd(struct cpuinfo_x86 *c)
* (AMD Erratum #110, docId: 25759).
*/
if (c->x86_model < 0x14 && cpu_has(c, X86_FEATURE_LAHF_LM)) {
u64 val;
clear_cpu_cap(c, X86_FEATURE_LAHF_LM);
if (!rdmsrl_amd_safe(0xc001100d, &val)) {
val &= ~(1ULL << 32);
wrmsrl_amd_safe(0xc001100d, val);
if (!rdmsrl_amd_safe(0xc001100d, &value)) {
value &= ~(1ULL << 32);
wrmsrl_amd_safe(0xc001100d, value);
}
}
@ -617,13 +614,12 @@ static void __cpuinit init_amd(struct cpuinfo_x86 *c)
if ((c->x86 == 0x15) &&
(c->x86_model >= 0x10) && (c->x86_model <= 0x1f) &&
!cpu_has(c, X86_FEATURE_TOPOEXT)) {
u64 val;
if (!rdmsrl_safe(0xc0011005, &val)) {
val |= 1ULL << 54;
wrmsrl_safe(0xc0011005, val);
rdmsrl(0xc0011005, val);
if (val & (1ULL << 54)) {
if (!rdmsrl_safe(0xc0011005, &value)) {
value |= 1ULL << 54;
wrmsrl_safe(0xc0011005, value);
rdmsrl(0xc0011005, value);
if (value & (1ULL << 54)) {
set_cpu_cap(c, X86_FEATURE_TOPOEXT);
printk(KERN_INFO FW_INFO "CPU: Re-enabling "
"disabled Topology Extensions Support\n");
@ -637,11 +633,10 @@ static void __cpuinit init_amd(struct cpuinfo_x86 *c)
*/
if ((c->x86 == 0x15) &&
(c->x86_model >= 0x02) && (c->x86_model < 0x20)) {
u64 val;
if (!rdmsrl_safe(0xc0011021, &val) && !(val & 0x1E)) {
val |= 0x1E;
wrmsrl_safe(0xc0011021, val);
if (!rdmsrl_safe(0xc0011021, &value) && !(value & 0x1E)) {
value |= 0x1E;
wrmsrl_safe(0xc0011021, value);
}
}