[linux-2.6-block.git] / include / asm-um / ldt.h

/*
 * Copyright (C) 2004 Fujitsu Siemens Computers GmbH
 * Licensed under the GPL
 *
 * Author: Bodo Stroesser <bstroesser@fujitsu-siemens.com>
 */

#ifndef __ASM_LDT_H
#define __ASM_LDT_H

#include <linux/mutex.h>
#include "asm/host_ldt.h"

extern void ldt_host_info(void);

#define LDT_PAGES_MAX \
	((LDT_ENTRIES * LDT_ENTRY_SIZE)/PAGE_SIZE)
#define LDT_ENTRIES_PER_PAGE \
	(PAGE_SIZE/LDT_ENTRY_SIZE)
#define LDT_DIRECT_ENTRIES \
	((LDT_PAGES_MAX*sizeof(void *))/LDT_ENTRY_SIZE)

struct ldt_entry {
	__u32 a;
	__u32 b;
};

typedef struct uml_ldt {
	int entry_count;
	struct mutex lock;
	union {
		struct ldt_entry * pages[LDT_PAGES_MAX];
		struct ldt_entry entries[LDT_DIRECT_ENTRIES];
	} u;
} uml_ldt_t;

#endif
Commit	Line	Data
fbdf2161 PBG	1	/*
	2	* Copyright (C) 2004 Fujitsu Siemens Computers GmbH
	3	* Licensed under the GPL
	4	*
	5	* Author: Bodo Stroesser <bstroesser@fujitsu-siemens.com>
	6	*/
	7
	8	#ifndef __ASM_LDT_H
	9	#define __ASM_LDT_H
	10
01ac835f	11	#include <linux/mutex.h>
fbdf2161 PBG	12	#include "asm/host_ldt.h"
fbdf2161 PBG	13
fbdf2161	14	extern void ldt_host_info(void);
fbdf2161 PBG	15
	16	#define LDT_PAGES_MAX \
	17	((LDT_ENTRIES * LDT_ENTRY_SIZE)/PAGE_SIZE)
	18	#define LDT_ENTRIES_PER_PAGE \
	19	(PAGE_SIZE/LDT_ENTRY_SIZE)
	20	#define LDT_DIRECT_ENTRIES \
	21	((LDT_PAGES_MAXsizeof(void ))/LDT_ENTRY_SIZE)
	22
	23	struct ldt_entry {
	24	__u32 a;
	25	__u32 b;
	26	};
	27
	28	typedef struct uml_ldt {
	29	int entry_count;
01ac835f	30	struct mutex lock;
fbdf2161 PBG	31	union {
	32	struct ldt_entry * pages[LDT_PAGES_MAX];
	33	struct ldt_entry entries[LDT_DIRECT_ENTRIES];
	34	} u;
	35	} uml_ldt_t;
	36
	37	#endif