arch/x86/um/asm/segment.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef __UM_SEGMENT_H
   3 #define __UM_SEGMENT_H
   4
   5 extern int host_gdt_entry_tls_min;
   6
   7 #define GDT_ENTRY_TLS_ENTRIES 3
   8 #define GDT_ENTRY_TLS_MIN host_gdt_entry_tls_min
   9 #define GDT_ENTRY_TLS_MAX (GDT_ENTRY_TLS_MIN + GDT_ENTRY_TLS_ENTRIES - 1)
  10
  11 typedef struct {
  12         unsigned long seg;
  13 } mm_segment_t;
  14
  15 #define MAKE_MM_SEG(s)  ((mm_segment_t) { (s) })
  16 #define KERNEL_DS       MAKE_MM_SEG(~0UL)
  17 #define USER_DS         MAKE_MM_SEG(TASK_SIZE)
  18
  19 #endif