diff options
Diffstat (limited to 'arch/riscv/include/asm/thread_info.h')
| -rw-r--r-- | arch/riscv/include/asm/thread_info.h | 52 |
1 files changed, 29 insertions, 23 deletions
diff --git a/arch/riscv/include/asm/thread_info.h b/arch/riscv/include/asm/thread_info.h index 5d473343634b..836d80dd2921 100644 --- a/arch/riscv/include/asm/thread_info.h +++ b/arch/riscv/include/asm/thread_info.h @@ -10,9 +10,15 @@ #include <asm/page.h> #include <linux/const.h> +#include <linux/sizes.h> /* thread information allocation */ -#define THREAD_SIZE_ORDER CONFIG_THREAD_SIZE_ORDER +#ifdef CONFIG_KASAN +#define KASAN_STACK_ORDER 1 +#else +#define KASAN_STACK_ORDER 0 +#endif +#define THREAD_SIZE_ORDER (CONFIG_THREAD_SIZE_ORDER + KASAN_STACK_ORDER) #define THREAD_SIZE (PAGE_SIZE << THREAD_SIZE_ORDER) /* @@ -31,7 +37,7 @@ #define IRQ_STACK_SIZE THREAD_SIZE -#ifndef __ASSEMBLY__ +#ifndef __ASSEMBLER__ #include <asm/processor.h> #include <asm/csr.h> @@ -60,6 +66,13 @@ struct thread_info { void *scs_base; void *scs_sp; #endif +#ifdef CONFIG_64BIT + /* + * Used in handle_exception() to save a0, a1 and a2 before knowing if we + * can access the kernel stack. + */ + unsigned long a0, a1, a2; +#endif }; #ifdef CONFIG_SHADOW_CALL_STACK @@ -85,7 +98,7 @@ struct thread_info { void arch_release_task_struct(struct task_struct *tsk); int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src); -#endif /* !__ASSEMBLY__ */ +#endif /* !__ASSEMBLER__ */ /* * thread information flags @@ -94,25 +107,18 @@ int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src); * - pending work-to-be-done flags are in lowest half-word * - other flags in upper half-word(s) */ -#define TIF_NOTIFY_RESUME 1 /* callback before returning to user */ -#define TIF_SIGPENDING 2 /* signal pending */ -#define TIF_NEED_RESCHED 3 /* rescheduling necessary */ -#define TIF_RESTORE_SIGMASK 4 /* restore signal mask in do_signal() */ -#define TIF_MEMDIE 5 /* is terminating due to OOM killer */ -#define TIF_NOTIFY_SIGNAL 9 /* signal notifications exist */ -#define TIF_UPROBE 10 /* uprobe breakpoint or singlestep */ -#define TIF_32BIT 11 /* compat-mode 32bit process */ -#define TIF_RISCV_V_DEFER_RESTORE 12 /* restore Vector before returing to user */ - -#define _TIF_NOTIFY_RESUME (1 << TIF_NOTIFY_RESUME) -#define _TIF_SIGPENDING (1 << TIF_SIGPENDING) -#define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED) -#define _TIF_NOTIFY_SIGNAL (1 << TIF_NOTIFY_SIGNAL) -#define _TIF_UPROBE (1 << TIF_UPROBE) -#define _TIF_RISCV_V_DEFER_RESTORE (1 << TIF_RISCV_V_DEFER_RESTORE) - -#define _TIF_WORK_MASK \ - (_TIF_NOTIFY_RESUME | _TIF_SIGPENDING | _TIF_NEED_RESCHED | \ - _TIF_NOTIFY_SIGNAL | _TIF_UPROBE) + +/* + * Tell the generic TIF infrastructure which bits riscv supports + */ +#define HAVE_TIF_NEED_RESCHED_LAZY +#define HAVE_TIF_RESTORE_SIGMASK + +#include <asm-generic/thread_info_tif.h> + +#define TIF_32BIT 16 /* compat-mode 32bit process */ +#define TIF_RISCV_V_DEFER_RESTORE 17 /* restore Vector before returing to user */ + +#define _TIF_RISCV_V_DEFER_RESTORE BIT(TIF_RISCV_V_DEFER_RESTORE) #endif /* _ASM_RISCV_THREAD_INFO_H */ |