diff options
Diffstat (limited to 'arch/arm64/include/asm/thread_info.h')
| -rw-r--r-- | arch/arm64/include/asm/thread_info.h | 40 |
1 files changed, 8 insertions, 32 deletions
diff --git a/arch/arm64/include/asm/thread_info.h b/arch/arm64/include/asm/thread_info.h index e9ea5a6bd449..46c3b93cf865 100644 --- a/arch/arm64/include/asm/thread_info.h +++ b/arch/arm64/include/asm/thread_info.h @@ -36,58 +36,31 @@ struct task_struct; +#include <asm/stack_pointer.h> #include <asm/types.h> typedef unsigned long mm_segment_t; /* * low level task data that entry.S needs immediate access to. - * __switch_to() assumes cpu_context follows immediately after cpu_domain. */ struct thread_info { unsigned long flags; /* low level flags */ mm_segment_t addr_limit; /* address limit */ - struct task_struct *task; /* main task structure */ +#ifdef CONFIG_ARM64_SW_TTBR0_PAN + u64 ttbr0; /* saved TTBR0_EL1 */ +#endif int preempt_count; /* 0 => preemptable, <0 => bug */ - int cpu; /* cpu */ }; #define INIT_THREAD_INFO(tsk) \ { \ - .task = &tsk, \ - .flags = 0, \ .preempt_count = INIT_PREEMPT_COUNT, \ .addr_limit = KERNEL_DS, \ } -#define init_thread_info (init_thread_union.thread_info) #define init_stack (init_thread_union.stack) -/* - * how to get the current stack pointer from C - */ -register unsigned long current_stack_pointer asm ("sp"); - -/* - * how to get the thread information struct from C - */ -static inline struct thread_info *current_thread_info(void) __attribute_const__; - -/* - * struct thread_info can be accessed directly via sp_el0. - * - * We don't use read_sysreg() as we want the compiler to cache the value where - * possible. - */ -static inline struct thread_info *current_thread_info(void) -{ - unsigned long sp_el0; - - asm ("mrs %0, sp_el0" : "=r" (sp_el0)); - - return (struct thread_info *)sp_el0; -} - #define thread_saved_pc(tsk) \ ((unsigned long)(tsk->thread.cpu_context.pc)) #define thread_saved_sp(tsk) \ @@ -112,6 +85,7 @@ static inline struct thread_info *current_thread_info(void) #define TIF_NEED_RESCHED 1 #define TIF_NOTIFY_RESUME 2 /* callback before returning to user */ #define TIF_FOREIGN_FPSTATE 3 /* CPU's FP state is not current's */ +#define TIF_UPROBE 4 /* uprobe breakpoint or singlestep */ #define TIF_NOHZ 7 #define TIF_SYSCALL_TRACE 8 #define TIF_SYSCALL_AUDIT 9 @@ -132,10 +106,12 @@ static inline struct thread_info *current_thread_info(void) #define _TIF_SYSCALL_AUDIT (1 << TIF_SYSCALL_AUDIT) #define _TIF_SYSCALL_TRACEPOINT (1 << TIF_SYSCALL_TRACEPOINT) #define _TIF_SECCOMP (1 << TIF_SECCOMP) +#define _TIF_UPROBE (1 << TIF_UPROBE) #define _TIF_32BIT (1 << TIF_32BIT) #define _TIF_WORK_MASK (_TIF_NEED_RESCHED | _TIF_SIGPENDING | \ - _TIF_NOTIFY_RESUME | _TIF_FOREIGN_FPSTATE) + _TIF_NOTIFY_RESUME | _TIF_FOREIGN_FPSTATE | \ + _TIF_UPROBE) #define _TIF_SYSCALL_WORK (_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT | \ _TIF_SYSCALL_TRACEPOINT | _TIF_SECCOMP | \ |