mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-12 20:46:49 +07:00
cdc4b9c019
They used to be used by the reboot code, but not anymore. Noticed by Jan Beulich Cc: JBeulich@novell.com Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
45 lines
1.1 KiB
C
45 lines
1.1 KiB
C
#ifndef _ASM_SEGMENT_H
|
|
#define _ASM_SEGMENT_H
|
|
|
|
#include <asm/cache.h>
|
|
|
|
#define __KERNEL_CS 0x10
|
|
#define __KERNEL_DS 0x18
|
|
|
|
#define __KERNEL32_CS 0x38
|
|
|
|
/*
|
|
* we cannot use the same code segment descriptor for user and kernel
|
|
* -- not even in the long flat mode, because of different DPL /kkeil
|
|
* The segment offset needs to contain a RPL. Grr. -AK
|
|
* GDT layout to get 64bit syscall right (sysret hardcodes gdt offsets)
|
|
*/
|
|
|
|
#define __USER32_CS 0x23 /* 4*8+3 */
|
|
#define __USER_DS 0x2b /* 5*8+3 */
|
|
#define __USER_CS 0x33 /* 6*8+3 */
|
|
#define __USER32_DS __USER_DS
|
|
|
|
#define GDT_ENTRY_TLS 1
|
|
#define GDT_ENTRY_TSS 8 /* needs two entries */
|
|
#define GDT_ENTRY_LDT 10 /* needs two entries */
|
|
#define GDT_ENTRY_TLS_MIN 12
|
|
#define GDT_ENTRY_TLS_MAX 14
|
|
/* 15 free */
|
|
|
|
#define GDT_ENTRY_TLS_ENTRIES 3
|
|
|
|
/* TLS indexes for 64bit - hardcoded in arch_prctl */
|
|
#define FS_TLS 0
|
|
#define GS_TLS 1
|
|
|
|
#define GS_TLS_SEL ((GDT_ENTRY_TLS_MIN+GS_TLS)*8 + 3)
|
|
#define FS_TLS_SEL ((GDT_ENTRY_TLS_MIN+FS_TLS)*8 + 3)
|
|
|
|
#define IDT_ENTRIES 256
|
|
#define GDT_ENTRIES 16
|
|
#define GDT_SIZE (GDT_ENTRIES * 8)
|
|
#define TLS_SIZE (GDT_ENTRY_TLS_ENTRIES * 8)
|
|
|
|
#endif
|