1/* SPDX-License-Identifier: GPL-2.0 */ 2#ifndef _SYSDEP_TLS_H 3#define _SYSDEP_TLS_H 4 5#ifdef __UM_HOST__ 6 7/* Change name to avoid conflicts with the original one from <asm/ldt.h>, which 8 * may be named user_desc (but in 2.4 and in header matching its API was named 9 * modify_ldt_ldt_s). */ 10 11typedef struct um_dup_user_desc { 12 unsigned int entry_number; 13 unsigned int base_addr; 14 unsigned int limit; 15 unsigned int seg_32bit:1; 16 unsigned int contents:2; 17 unsigned int read_exec_only:1; 18 unsigned int limit_in_pages:1; 19 unsigned int seg_not_present:1; 20 unsigned int useable:1; 21#ifdef __x86_64__ 22 unsigned int lm:1; 23#endif 24} user_desc_t; 25 26#else /* __UM_HOST__ */ 27 28typedef struct user_desc user_desc_t; 29 30#endif /* __UM_HOST__ */ 31 32extern int os_set_thread_area(user_desc_t *info, int pid); 33extern int os_get_thread_area(user_desc_t *info, int pid); 34 35#ifdef __i386__ 36#define GDT_ENTRY_TLS_MIN_I386 6 37#define GDT_ENTRY_TLS_MIN_X86_64 12 38#endif 39 40#endif /* _SYSDEP_TLS_H */ 41