From 79a9991e87fe61ff2a8b5ac8c112b3ce3544cb53 Mon Sep 17 00:00:00 2001 From: Jens Axboe Date: Thu, 22 Oct 2020 20:09:23 -0600 Subject: [PATCH] arm64: add support for TIF_NOTIFY_SIGNAL [ Upstream commit 192caabd4dd92c98d23ed4334d7596af05af2fb4 ] Wire up TIF_NOTIFY_SIGNAL handling for arm64. Cc: linux-arm-kernel@lists.infradead.org Acked-by: Will Deacon Acked-by: Catalin Marinas Signed-off-by: Jens Axboe Signed-off-by: Greg Kroah-Hartman --- arch/arm64/include/asm/thread_info.h | 5 ++++- arch/arm64/kernel/signal.c | 2 +- 2 files changed, 5 insertions(+), 2 deletions(-) diff --git a/arch/arm64/include/asm/thread_info.h b/arch/arm64/include/asm/thread_info.h index 1fbab854a51b..cdcf307764aa 100644 --- a/arch/arm64/include/asm/thread_info.h +++ b/arch/arm64/include/asm/thread_info.h @@ -68,6 +68,7 @@ void arch_release_task_struct(struct task_struct *tsk); #define TIF_UPROBE 4 /* uprobe breakpoint or singlestep */ #define TIF_FSCHECK 5 /* Check FS is USER_DS on return */ #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 */ @@ -98,10 +99,12 @@ void arch_release_task_struct(struct task_struct *tsk); #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_WORK_MASK (_TIF_NEED_RESCHED | _TIF_SIGPENDING | \ _TIF_NOTIFY_RESUME | _TIF_FOREIGN_FPSTATE | \ - _TIF_UPROBE | _TIF_FSCHECK | _TIF_MTE_ASYNC_FAULT) + _TIF_UPROBE | _TIF_FSCHECK | _TIF_MTE_ASYNC_FAULT | \ + _TIF_NOTIFY_SIGNAL) #define _TIF_SYSCALL_WORK (_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT | \ _TIF_SYSCALL_TRACEPOINT | _TIF_SECCOMP | \ diff --git a/arch/arm64/kernel/signal.c b/arch/arm64/kernel/signal.c index 0dab5679a97d..b6fbbd527dd7 100644 --- a/arch/arm64/kernel/signal.c +++ b/arch/arm64/kernel/signal.c @@ -938,7 +938,7 @@ asmlinkage void do_notify_resume(struct pt_regs *regs, (void __user *)NULL, current); } - if (thread_flags & _TIF_SIGPENDING) + if (thread_flags & (_TIF_SIGPENDING | _TIF_NOTIFY_SIGNAL)) do_signal(regs); if (thread_flags & _TIF_NOTIFY_RESUME) {