/* SPDX-License-Identifier: GPL-2.0 */ /* * S390 version * Copyright IBM Corp. 2002, 2006 * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com) */ #ifndef _ASM_THREAD_INFO_H #define _ASM_THREAD_INFO_H #include #include /* * General size of kernel stacks */ #if defined(CONFIG_KASAN) || defined(CONFIG_KMSAN) #define THREAD_SIZE_ORDER 4 #else #define THREAD_SIZE_ORDER 2 #endif #define BOOT_STACK_SIZE (PAGE_SIZE << 2) #define THREAD_SIZE (PAGE_SIZE << THREAD_SIZE_ORDER) #define STACK_INIT_OFFSET (THREAD_SIZE - STACK_FRAME_OVERHEAD - __PT_SIZE) #ifndef __ASSEMBLER__ /* * low level task data that entry.S needs immediate access to * - this struct should fit entirely inside of one cache line * - this struct shares the supervisor stack pages * - if the contents of this structure are changed, the assembly constants must also be changed */ struct thread_info { unsigned long flags; /* low level flags */ unsigned long syscall_work; /* SYSCALL_WORK_ flags */ unsigned int cpu; /* current CPU */ unsigned char sie; /* running in SIE context */ }; /* * macros/functions for gaining access to the thread information structure */ #define INIT_THREAD_INFO(tsk) \ { \ .flags = 0, \ } struct task_struct; void arch_setup_new_exec(void); #define arch_setup_new_exec arch_setup_new_exec #endif /* * thread information flags bit numbers * * Tell the generic TIF infrastructure which special bits s390 supports */ #define HAVE_TIF_NEED_RESCHED_LAZY #define HAVE_TIF_RESTORE_SIGMASK #include /* Architecture specific bits */ #define TIF_ASCE_PRIMARY 16 /* primary asce is kernel asce */ #define TIF_GUARDED_STORAGE 17 /* load guarded storage control block */ #define TIF_ISOLATE_BP_GUEST 18 /* Run KVM guests with isolated BP */ #define TIF_PER_TRAP 19 /* Need to handle PER trap on exit to usermode */ #define TIF_31BIT 20 /* 32bit process */ #define TIF_SINGLE_STEP 21 /* This task is single stepped */ #define TIF_BLOCK_STEP 22 /* This task is block stepped */ #define TIF_UPROBE_SINGLESTEP 23 /* This task is uprobe single stepped */ #define _TIF_ASCE_PRIMARY BIT(TIF_ASCE_PRIMARY) #define _TIF_GUARDED_STORAGE BIT(TIF_GUARDED_STORAGE) #define _TIF_ISOLATE_BP_GUEST BIT(TIF_ISOLATE_BP_GUEST) #define _TIF_PER_TRAP BIT(TIF_PER_TRAP) #define _TIF_31BIT BIT(TIF_31BIT) #define _TIF_SINGLE_STEP BIT(TIF_SINGLE_STEP) #define _TIF_BLOCK_STEP BIT(TIF_BLOCK_STEP) #define _TIF_UPROBE_SINGLESTEP BIT(TIF_UPROBE_SINGLESTEP) #endif /* _ASM_THREAD_INFO_H */