/* SPDX-License-Identifier: GPL-2.0-only */ /* * Based on arch/arm/include/asm/thread_info.h * * Copyright (C) 2002 Russell King. * Copyright (C) 2012 ARM Ltd. */ #ifndef __ASM_THREAD_INFO_H #define __ASM_THREAD_INFO_H #include <linux/compiler.h> #ifndef __ASSEMBLER__ struct task_struct; #include <asm/memory.h> #include <asm/stack_pointer.h> #include <asm/types.h> /* * low level task data that entry.S needs immediate access to. */ struct thread_info { unsigned long flags; /* low level flags */ #ifdef CONFIG_ARM64_SW_TTBR0_PAN u64 ttbr0; /* saved TTBR0_EL1 */ #endif union { u64 preempt_count; /* 0 => preemptible, <0 => bug */ struct { #ifdef CONFIG_CPU_BIG_ENDIAN u32 need_resched; u32 count; #else u32 count; u32 need_resched; #endif } preempt; }; #ifdef CONFIG_SHADOW_CALL_STACK void *scs_base; void *scs_sp; #endif u32 cpu; }; #define thread_saved_pc(tsk) \ ((unsigned long)(tsk->thread.cpu_context.pc)) #define thread_saved_sp(tsk) \ ((unsigned long)(tsk->thread.cpu_context.sp)) #define thread_saved_fp(tsk) \ ((unsigned long)(tsk->thread.cpu_context.fp)) void arch_setup_new_exec(void); #define arch_setup_new_exec arch_setup_new_exec #endif #define TIF_SIGPENDING 0 /* signal pending */ #define TIF_NEED_RESCHED 1 /* rescheduling necessary */ #define TIF_NEED_RESCHED_LAZY 2 /* Lazy rescheduling needed */ #define TIF_NOTIFY_RESUME 3 /* callback before returning to user */ #define TIF_FOREIGN_FPSTATE 4 /* CPU's FP state is not current's */ #define TIF_UPROBE 5 /* uprobe breakpoint or singlestep */ #define TIF_MTE_ASYNC_FAULT 6 /* MTE Asynchronous Tag Check Fault */ #define TIF_NOTIFY_SIGNAL 7 /* signal notifications exist */ #define TIF_SYSCALL_TRACE 8 /* syscall trace active */ #define TIF_SYSCALL_AUDIT 9 /* syscall auditing */ #define TIF_SYSCALL_TRACEPOINT 10 /* syscall tracepoint for ftrace */ #define TIF_SECCOMP 11 /* syscall secure computing */ #define TIF_SYSCALL_EMU 12 /* syscall emulation active */ #define TIF_PATCH_PENDING 13 /* pending live patching update */ #define TIF_MEMDIE 18 /* is terminating due to OOM killer */ #define TIF_FREEZE 19 #define TIF_RESTORE_SIGMASK 20 #define TIF_SINGLESTEP 21 #define TIF_32BIT 22 /* 32bit process */ #define TIF_SVE 23 /* Scalable Vector Extension in use */ #define TIF_SVE_VL_INHERIT 24 /* Inherit SVE vl_onexec across exec */ #define TIF_SSBD 25 /* Wants SSB mitigation */ #define TIF_TAGGED_ADDR 26 /* Allow tagged user addresses */ #define TIF_SME 27 /* SME in use */ #define TIF_SME_VL_INHERIT 28 /* Inherit SME vl_onexec across exec */ #define TIF_KERNEL_FPSTATE 29 /* Task is in a kernel mode FPSIMD section */ #define TIF_TSC_SIGSEGV 30 /* SIGSEGV on counter-timer access */ #define TIF_LAZY_MMU_PENDING 31 /* Ops pending for lazy mmu mode exit */ #define _TIF_SIGPENDING (1 << TIF_SIGPENDING) #define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED) #define _TIF_NEED_RESCHED_LAZY (1 << TIF_NEED_RESCHED_LAZY) #define _TIF_NOTIFY_RESUME (1 << TIF_NOTIFY_RESUME) #define _TIF_FOREIGN_FPSTATE (1 << TIF_FOREIGN_FPSTATE) #define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE) #define _TIF_SYSCALL_AUDIT (1 << TIF_SYSCALL_AUDIT) #define _TIF_SYSCALL_TRACEPOINT (1 << TIF_SYSCALL_TRACEPOINT) #define _TIF_SECCOMP (1 << TIF_SECCOMP) #define _TIF_SYSCALL_EMU (1 << TIF_SYSCALL_EMU) #define _TIF_PATCH_PENDING (1 << TIF_PATCH_PENDING) #define _TIF_UPROBE (1 << TIF_UPROBE) #define _TIF_SINGLESTEP (1 << TIF_SINGLESTEP) #define _TIF_32BIT (1 << TIF_32BIT) #define _TIF_SVE (1 << TIF_SVE) #define _TIF_MTE_ASYNC_FAULT (1 << TIF_MTE_ASYNC_FAULT) #define _TIF_NOTIFY_SIGNAL (1 << TIF_NOTIFY_SIGNAL) #define _TIF_TSC_SIGSEGV (1 << TIF_TSC_SIGSEGV) #define _TIF_SYSCALL_WORK (_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT | \ _TIF_SYSCALL_TRACEPOINT | _TIF_SECCOMP | \ _TIF_SYSCALL_EMU) #ifdef CONFIG_SHADOW_CALL_STACK #define INIT_SCS \ .scs_base = init_shadow_call_stack, \ .scs_sp = init_shadow_call_stack, #else #define INIT_SCS #endif #define INIT_THREAD_INFO(tsk) \ { \ .flags = _TIF_FOREIGN_FPSTATE, \ .preempt_count = INIT_PREEMPT_COUNT, \ INIT_SCS \ } #endif /* __ASM_THREAD_INFO_H */
