Commit 5c3c010f authored Feb 28, 2023 by Jens Axboe Committed by Jialin Zhang Feb 28, 2023

x86: Wire up TIF_NOTIFY_SIGNAL

stable inclusion
from stable-v5.10.162
commit 4b1dcf8ec9b2f11b57f1ff5dcaa1f8575c7dacb5
category: bugfix
bugzilla: https://gitee.com/src-openeuler/kernel/issues/I6BTWC
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.10.168&id=4b1dcf8ec9b2f11b57f1ff5dcaa1f8575c7dacb5



--------------------------------

[ Upstream commit c8d5ed67 ]

The generic entry code has support for TIF_NOTIFY_SIGNAL already. Just
provide the TIF bit.

[ tglx: Adopted to other TIF changes in x86 ]

Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20201026203230.386348-4-axboe@kernel.dk


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Li Lingfeng <lilingfeng3@huawei.com>
Reviewed-by: Zhang Yi <yi.zhang@huawei.com>
Reviewed-by: Wang Weiyang <wangweiyang2@huawei.com>
Signed-off-by: Jialin Zhang <zhangjialin11@huawei.com>

parent 63da7f3d

arch/x86/include/asm/thread_info.h

+2 −0

Original line number	Diff line number	Diff line
		@@ -99,6 +99,7 @@ struct thread_info {
		#define TIF_NOTSC 16 /* TSC is not accessible in userland */
		#define TIF_IA32 17 /* IA32 compatibility process */
		#define TIF_SLD 18 /* Restore split lock detection on context switch */
		#define TIF_NOTIFY_SIGNAL 19 /* signal notifications exist */
		#define TIF_MEMDIE 20 /* is terminating due to OOM killer */
		#define TIF_POLLING_NRFLAG 21 /* idle is polling for TIF_NEED_RESCHED */
		#define TIF_IO_BITMAP 22 /* uses I/O bitmap */
		@@ -127,6 +128,7 @@ struct thread_info {
		#define _TIF_NOCPUID (1 << TIF_NOCPUID)
		#define _TIF_NOTSC (1 << TIF_NOTSC)
		#define _TIF_IA32 (1 << TIF_IA32)
		#define _TIF_NOTIFY_SIGNAL (1 << TIF_NOTIFY_SIGNAL)
		#define _TIF_SLD (1 << TIF_SLD)
		#define _TIF_POLLING_NRFLAG (1 << TIF_POLLING_NRFLAG)
		#define _TIF_IO_BITMAP (1 << TIF_IO_BITMAP)