mirror of https://gitee.com/openkylin/linux.git
42 lines
901 B
C
42 lines
901 B
C
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/*
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* Copyright (C) 2004 Fujitsu Siemens Computers GmbH
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* Licensed under the GPL
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*
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* Author: Bodo Stroesser <bstroesser@fujitsu-siemens.com>
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*/
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#ifndef __ASM_LDT_H
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#define __ASM_LDT_H
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#include "asm/semaphore.h"
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#include "asm/host_ldt.h"
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struct mmu_context_skas;
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extern void ldt_host_info(void);
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extern long init_new_ldt(struct mmu_context_skas * to_mm,
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struct mmu_context_skas * from_mm);
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extern void free_ldt(struct mmu_context_skas * mm);
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#define LDT_PAGES_MAX \
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((LDT_ENTRIES * LDT_ENTRY_SIZE)/PAGE_SIZE)
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#define LDT_ENTRIES_PER_PAGE \
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(PAGE_SIZE/LDT_ENTRY_SIZE)
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#define LDT_DIRECT_ENTRIES \
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((LDT_PAGES_MAX*sizeof(void *))/LDT_ENTRY_SIZE)
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struct ldt_entry {
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__u32 a;
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__u32 b;
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};
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typedef struct uml_ldt {
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int entry_count;
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struct semaphore semaphore;
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union {
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struct ldt_entry * pages[LDT_PAGES_MAX];
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struct ldt_entry entries[LDT_DIRECT_ENTRIES];
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} u;
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} uml_ldt_t;
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#endif
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