1/* SPDX-License-Identifier: GPL-2.0 */ 2#ifndef __UM_SEGMENT_H 3#define __UM_SEGMENT_H 4 5extern 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 11typedef 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 20