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x86: use CR0 defines.

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Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Dave Jones 2008-01-30 13:30:39 +01:00 committed by Ingo Molnar
parent 3578facf73
commit 7ebad70534
5 changed files with 10 additions and 8 deletions
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3
arch/x86/kernel/cpu/bugs.c
View File

@ -11,6 +11,7 @@
#include <linux/utsname.h>
#include <asm/bugs.h>
#include <asm/processor.h>
#include <asm/processor-flags.h>
#include <asm/i387.h>
#include <asm/msr.h>
#include <asm/paravirt.h>
@ -35,7 +36,7 @@ __setup("mca-pentium", mca_pentium);
static int __init no_387(char *s)
{
boot_cpu_data.hard_math = 0;
write_cr0(0xE | read_cr0());
write_cr0(X86_CR0_TS | X86_CR0_EM | X86_CR0_MP | read_cr0());
return 1;
}

6
arch/x86/kernel/cpu/cyrix.c
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@ -5,6 +5,7 @@
#include <asm/dma.h>
#include <asm/io.h>
#include <asm/processor-cyrix.h>
#include <asm/processor-flags.h>
#include <asm/timer.h>
#include <asm/pci-direct.h>
#include <asm/tsc.h>
@ -126,15 +127,12 @@ static void __cpuinit set_cx86_reorder(void)
static void __cpuinit set_cx86_memwb(void)
{
u32 cr0;
printk(KERN_INFO "Enable Memory-Write-back mode on Cyrix/NSC processor.\n");
/* CCR2 bit 2: unlock NW bit */
setCx86(CX86_CCR2, getCx86(CX86_CCR2) & ~0x04);
/* set 'Not Write-through' */
cr0 = 0x20000000;
write_cr0(read_cr0() | cr0);
write_cr0(read_cr0() | X86_CR0_NW);
/* CCR2 bit 2: lock NW bit and set WT1 */
setCx86(CX86_CCR2, getCx86(CX86_CCR2) | 0x14 );
}

3
arch/x86/kernel/cpu/mtrr/cyrix.c
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@ -4,6 +4,7 @@
#include <asm/msr.h>
#include <asm/io.h>
#include <asm/processor-cyrix.h>
#include <asm/processor-flags.h>
#include "mtrr.h"
int arr3_protected;
@ -142,7 +143,7 @@ static void prepare_set(void)
/* Disable and flush caches. Note that wbinvd flushes the TLBs as
a side-effect */
cr0 = read_cr0() | 0x40000000;
cr0 = read_cr0() | X86_CR0_CD;
wbinvd();
write_cr0(cr0);
wbinvd();

3
arch/x86/kernel/cpu/mtrr/generic.c
View File

@ -9,6 +9,7 @@
#include <asm/msr.h>
#include <asm/system.h>
#include <asm/cpufeature.h>
#include <asm/processor-flags.h>
#include <asm/tlbflush.h>
#include "mtrr.h"
@ -350,7 +351,7 @@ static void prepare_set(void) __acquires(set_atomicity_lock)
spin_lock(&set_atomicity_lock);
/* Enter the no-fill (CD=1, NW=0) cache mode and flush caches. */
cr0 = read_cr0() | 0x40000000; /* set CD flag */
cr0 = read_cr0() | X86_CR0_CD;
write_cr0(cr0);
wbinvd();

3
arch/x86/kernel/cpu/mtrr/state.c
View File

@ -4,6 +4,7 @@
#include <asm/mtrr.h>
#include <asm/msr.h>
#include <asm/processor-cyrix.h>
#include <asm/processor-flags.h>
#include "mtrr.h"
@ -25,7 +26,7 @@ void set_mtrr_prepare_save(struct set_mtrr_context *ctxt)
/* Disable and flush caches. Note that wbinvd flushes the TLBs as
a side-effect */
cr0 = read_cr0() | 0x40000000;
cr0 = read_cr0() | X86_CR0_CD;
wbinvd();
write_cr0(cr0);
wbinvd();