1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * S390 version 4 * Copyright IBM Corp. 2002, 2006 5 * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com) 6 */ 7 8 #ifndef _ASM_THREAD_INFO_H 9 #define _ASM_THREAD_INFO_H 10 11 #include <linux/bits.h> 12 13 /* 14 * General size of kernel stacks 15 */ 16 #if defined(CONFIG_KASAN) || defined(CONFIG_KMSAN) 17 #define THREAD_SIZE_ORDER 4 18 #else 19 #define THREAD_SIZE_ORDER 2 20 #endif 21 #define BOOT_STACK_SIZE (PAGE_SIZE << 2) 22 #define THREAD_SIZE (PAGE_SIZE << THREAD_SIZE_ORDER) 23 24 #define STACK_INIT_OFFSET (THREAD_SIZE - STACK_FRAME_OVERHEAD - __PT_SIZE) 25 26 #ifndef __ASSEMBLY__ 27 #include <asm/lowcore.h> 28 #include <asm/page.h> 29 30 /* 31 * low level task data that entry.S needs immediate access to 32 * - this struct should fit entirely inside of one cache line 33 * - this struct shares the supervisor stack pages 34 * - if the contents of this structure are changed, the assembly constants must also be changed 35 */ 36 struct thread_info { 37 unsigned long flags; /* low level flags */ 38 unsigned long syscall_work; /* SYSCALL_WORK_ flags */ 39 unsigned int cpu; /* current CPU */ 40 unsigned char sie; /* running in SIE context */ 41 }; 42 43 /* 44 * macros/functions for gaining access to the thread information structure 45 */ 46 #define INIT_THREAD_INFO(tsk) \ 47 { \ 48 .flags = 0, \ 49 } 50 51 struct task_struct; 52 53 void arch_setup_new_exec(void); 54 #define arch_setup_new_exec arch_setup_new_exec 55 56 #endif 57 58 /* 59 * thread information flags bit numbers 60 */ 61 #define TIF_NOTIFY_RESUME 0 /* callback before returning to user */ 62 #define TIF_SIGPENDING 1 /* signal pending */ 63 #define TIF_NEED_RESCHED 2 /* rescheduling necessary */ 64 #define TIF_NEED_RESCHED_LAZY 3 /* lazy rescheduling needed */ 65 #define TIF_UPROBE 4 /* breakpointed or single-stepping */ 66 #define TIF_PATCH_PENDING 5 /* pending live patching update */ 67 #define TIF_NOTIFY_SIGNAL 7 /* signal notifications exist */ 68 #define TIF_GUARDED_STORAGE 8 /* load guarded storage control block */ 69 #define TIF_ISOLATE_BP_GUEST 9 /* Run KVM guests with isolated BP */ 70 #define TIF_PER_TRAP 10 /* Need to handle PER trap on exit to usermode */ 71 #define TIF_31BIT 16 /* 32bit process */ 72 #define TIF_MEMDIE 17 /* is terminating due to OOM killer */ 73 #define TIF_RESTORE_SIGMASK 18 /* restore signal mask in do_signal() */ 74 #define TIF_SINGLE_STEP 19 /* This task is single stepped */ 75 #define TIF_BLOCK_STEP 20 /* This task is block stepped */ 76 #define TIF_UPROBE_SINGLESTEP 21 /* This task is uprobe single stepped */ 77 #define TIF_SYSCALL_TRACE 24 /* syscall trace active */ 78 #define TIF_SYSCALL_AUDIT 25 /* syscall auditing active */ 79 #define TIF_SECCOMP 26 /* secure computing */ 80 #define TIF_SYSCALL_TRACEPOINT 27 /* syscall tracepoint instrumentation */ 81 82 #define _TIF_NOTIFY_RESUME BIT(TIF_NOTIFY_RESUME) 83 #define _TIF_SIGPENDING BIT(TIF_SIGPENDING) 84 #define _TIF_NEED_RESCHED BIT(TIF_NEED_RESCHED) 85 #define _TIF_NEED_RESCHED_LAZY BIT(TIF_NEED_RESCHED_LAZY) 86 #define _TIF_UPROBE BIT(TIF_UPROBE) 87 #define _TIF_PATCH_PENDING BIT(TIF_PATCH_PENDING) 88 #define _TIF_NOTIFY_SIGNAL BIT(TIF_NOTIFY_SIGNAL) 89 #define _TIF_GUARDED_STORAGE BIT(TIF_GUARDED_STORAGE) 90 #define _TIF_ISOLATE_BP_GUEST BIT(TIF_ISOLATE_BP_GUEST) 91 #define _TIF_PER_TRAP BIT(TIF_PER_TRAP) 92 #define _TIF_31BIT BIT(TIF_31BIT) 93 #define _TIF_MEMDIE BIT(TIF_MEMDIE) 94 #define _TIF_RESTORE_SIGMASK BIT(TIF_RESTORE_SIGMASK) 95 #define _TIF_SINGLE_STEP BIT(TIF_SINGLE_STEP) 96 #define _TIF_BLOCK_STEP BIT(TIF_BLOCK_STEP) 97 #define _TIF_UPROBE_SINGLESTEP BIT(TIF_UPROBE_SINGLESTEP) 98 #define _TIF_SYSCALL_TRACE BIT(TIF_SYSCALL_TRACE) 99 #define _TIF_SYSCALL_AUDIT BIT(TIF_SYSCALL_AUDIT) 100 #define _TIF_SECCOMP BIT(TIF_SECCOMP) 101 #define _TIF_SYSCALL_TRACEPOINT BIT(TIF_SYSCALL_TRACEPOINT) 102 103 #endif /* _ASM_THREAD_INFO_H */ 104