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x86: Export some definition of MTRR

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For KVM can reuse the type define, and need them to support shadow MTRR.

Signed-off-by: Sheng Yang <sheng@linux.intel.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Sheng Yang 2008-10-09 16:01:53 +08:00 committed by Avi Kivity
parent b558bc0a25
commit 932d27a791
3 changed files with 28 additions and 26 deletions
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25
arch/x86/include/asm/mtrr.h
View file

@ -57,6 +57,31 @@ struct mtrr_gentry {
};
#endif /* !__i386__ */
struct mtrr_var_range {
u32 base_lo;
u32 base_hi;
u32 mask_lo;
u32 mask_hi;
};
/* In the Intel processor's MTRR interface, the MTRR type is always held in
an 8 bit field: */
typedef u8 mtrr_type;
#define MTRR_NUM_FIXED_RANGES 88
#define MTRR_MAX_VAR_RANGES 256
struct mtrr_state_type {
struct mtrr_var_range var_ranges[MTRR_MAX_VAR_RANGES];
mtrr_type fixed_ranges[MTRR_NUM_FIXED_RANGES];
unsigned char enabled;
unsigned char have_fixed;
mtrr_type def_type;
};
#define MTRRphysBase_MSR(reg) (0x200 + 2 * (reg))
#define MTRRphysMask_MSR(reg) (0x200 + 2 * (reg) + 1)
/* These are the various ioctls */
#define MTRRIOC_ADD_ENTRY _IOW(MTRR_IOCTL_BASE, 0, struct mtrr_sentry)
#define MTRRIOC_SET_ENTRY _IOW(MTRR_IOCTL_BASE, 1, struct mtrr_sentry)

12
arch/x86/kernel/cpu/mtrr/generic.c
View file

@ -14,14 +14,6 @@
#include <asm/pat.h>
#include "mtrr.h"
struct mtrr_state_type {
struct mtrr_var_range var_ranges[MTRR_MAX_VAR_RANGES];
mtrr_type fixed_ranges[MTRR_NUM_FIXED_RANGES];
unsigned char enabled;
unsigned char have_fixed;
mtrr_type def_type;
};
struct fixed_range_block {
int base_msr; /* start address of an MTRR block */
int ranges; /* number of MTRRs in this block */
@ -35,10 +27,12 @@ static struct fixed_range_block fixed_range_blocks[] = {
};
static unsigned long smp_changes_mask;
static struct mtrr_state_type mtrr_state = {};
static int mtrr_state_set;
u64 mtrr_tom2;
struct mtrr_state_type mtrr_state = {};
EXPORT_SYMBOL_GPL(mtrr_state);
#undef MODULE_PARAM_PREFIX
#define MODULE_PARAM_PREFIX "mtrr."

17
arch/x86/kernel/cpu/mtrr/mtrr.h
View file

@ -8,12 +8,6 @@
#define MTRRcap_MSR 0x0fe
#define MTRRdefType_MSR 0x2ff
#define MTRRphysBase_MSR(reg) (0x200 + 2 * (reg))
#define MTRRphysMask_MSR(reg) (0x200 + 2 * (reg) + 1)
#define MTRR_NUM_FIXED_RANGES 88
#define MTRR_MAX_VAR_RANGES 256
#define MTRRfix64K_00000_MSR 0x250
#define MTRRfix16K_80000_MSR 0x258
#define MTRRfix16K_A0000_MSR 0x259
@ -30,10 +24,6 @@
#define MTRR_CHANGE_MASK_VARIABLE 0x02
#define MTRR_CHANGE_MASK_DEFTYPE 0x04
/* In the Intel processor's MTRR interface, the MTRR type is always held in
an 8 bit field: */
typedef u8 mtrr_type;
extern unsigned int mtrr_usage_table[MTRR_MAX_VAR_RANGES];
struct mtrr_ops {
@ -71,13 +61,6 @@ struct set_mtrr_context {
u32 ccr3;
};
struct mtrr_var_range {
u32 base_lo;
u32 base_hi;
u32 mask_lo;
u32 mask_hi;
};
void set_mtrr_done(struct set_mtrr_context *ctxt);
void set_mtrr_cache_disable(struct set_mtrr_context *ctxt);
void set_mtrr_prepare_save(struct set_mtrr_context *ctxt);