80fbb69a8d
This patch introduces fill_ldt(), which populates a ldt descriptor from a user_desc in once, instead of relying in the LDT_entry_a and LDT_entry_b macros Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
35 lines
769 B
C
35 lines
769 B
C
#ifndef _ASM_DESC_H_
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#define _ASM_DESC_H_
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#ifndef __ASSEMBLY__
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#include <asm/desc_defs.h>
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#include <asm/ldt.h>
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static inline void fill_ldt(struct desc_struct *desc, struct user_desc *info)
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{
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desc->limit0 = info->limit & 0x0ffff;
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desc->base0 = info->base_addr & 0x0000ffff;
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desc->base1 = (info->base_addr & 0x00ff0000) >> 16;
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desc->type = (info->read_exec_only ^ 1) << 1;
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desc->type |= info->contents << 2;
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desc->s = 1;
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desc->dpl = 0x3;
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desc->p = info->seg_not_present ^ 1;
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desc->limit = (info->limit & 0xf0000) >> 16;
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desc->avl = info->useable;
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desc->d = info->seg_32bit;
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desc->g = info->limit_in_pages;
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desc->base2 = (info->base_addr & 0xff000000) >> 24;
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}
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#endif
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#ifdef CONFIG_X86_32
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# include "desc_32.h"
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#else
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# include "desc_64.h"
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#endif
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#endif
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