diff options
Diffstat (limited to '')
| -rw-r--r-- | arch/x86/um/asm/segment.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/arch/x86/um/asm/segment.h b/arch/x86/um/asm/segment.h new file mode 100644 index 000000000..453db3771 --- /dev/null +++ b/arch/x86/um/asm/segment.h @@ -0,0 +1,19 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __UM_SEGMENT_H +#define __UM_SEGMENT_H + +extern int host_gdt_entry_tls_min; + +#define GDT_ENTRY_TLS_ENTRIES 3 +#define GDT_ENTRY_TLS_MIN host_gdt_entry_tls_min +#define GDT_ENTRY_TLS_MAX (GDT_ENTRY_TLS_MIN + GDT_ENTRY_TLS_ENTRIES - 1) + +typedef struct { + unsigned long seg; +} mm_segment_t; + +#define MAKE_MM_SEG(s) ((mm_segment_t) { (s) }) +#define KERNEL_DS MAKE_MM_SEG(~0UL) +#define USER_DS MAKE_MM_SEG(TASK_SIZE) + +#endif |