Leaked source code of windows server 2003
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/*++
Copyright (c) 1997-8 Microsoft Corporation
Module Name:
pat.h
Abstract:
This module contains the i386 specific Page Attribute
Table (PAT) register hardware definitions.
Author:
Shivnandan Kaushik (Intel Corp)
Environment:
Kernel mode only.
Revision History:
--*/
//
// PAT MSR architecture definitions
//
//
// PAT model specific register
//
#define PAT_MSR 0x277
//
// PAT memory attributes
//
#define PAT_TYPE_STRONG_UC 0 // corresponds to PPro PCD=1,PWT=1
#define PAT_TYPE_USWC 1
#define PAT_TYPE_WT 4
#define PAT_TYPE_WP 5
#define PAT_TYPE_WB 6
#define PAT_TYPE_WEAK_UC 7 // corresponds to PPro PCD=1,PWT=0
#define PAT_TYPE_MAX 8
#include "pshpack1.h"
typedef union _PAT {
struct {
UCHAR Pat[8];
} hw;
ULONGLONG QuadPart;
} PAT, *PPAT;
#include "poppack.h"