[PATCH] arm64: make _TIF_WORK_MASK bits contiguous

[Salvatore Bonaccorso]

As same as in commit 870d16757ba8 ("arm64: make _TIF_WORK_MASK bits
contiguous") in mainline, we need to make the bits of _TIF_WORK_MASK to
be contiguous in order to use this as an immediate argument to an AND
instruction in entry.S.

We shuffle these bits down-by-one keeping the existing contiguity after
inserting TIF_NEED_RESCHED_LAZY.

Otherwise, omitting this change will result in a build failure as below:

    arch/arm64/kernel/entry.S: Assembler messages:
    arch/arm64/kernel/entry.S:763: Error: immediate out of range at operand 3 -- `and x2,x19,#((1<<1)|(1<<0)|(1<<2)|(1<<3)|(1<<4)|(1<<5)|(1<<6)|(1<<13)|(1<<7))'

Reported-by: Vignesh Raghavendra <vigneshr@xxxxxx>
Reported-by: Pavel Machek <pavel@xxxxxxx>
Link: https://lore.kernel.org/lkml/40de655e-26f3-aa7b-f1ec-6877396a9f1e@xxxxxx/
Signed-off-by: Salvatore Bonaccorso <carnil@xxxxxxxxxx>
---
 arch/arm64/include/asm/thread_info.h | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/arch/arm64/include/asm/thread_info.h b/arch/arm64/include/asm/thread_info.h
index 6eb36a2126e8..2afd9ceb66c9 100644
--- a/arch/arm64/include/asm/thread_info.h
+++ b/arch/arm64/include/asm/thread_info.h
@@ -70,12 +70,12 @@ void arch_release_task_struct(struct task_struct *tsk);
 #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 */
-#define TIF_SECCOMP		11	/* syscall secure computing */
-#define TIF_SYSCALL_EMU		12	/* syscall emulation active */
-#define TIF_NEED_RESCHED_LAZY	13
+#define TIF_NEED_RESCHED_LAZY	8
+#define TIF_SYSCALL_TRACE	9	/* syscall trace active */
+#define TIF_SYSCALL_AUDIT	10	/* syscall auditing */
+#define TIF_SYSCALL_TRACEPOINT	11	/* syscall tracepoint for ftrace */
+#define TIF_SECCOMP		12	/* syscall secure computing */
+#define TIF_SYSCALL_EMU		13	/* syscall emulation active */
 #define TIF_MEMDIE		18	/* is terminating due to OOM killer */
 #define TIF_FREEZE		19
 #define TIF_RESTORE_SIGMASK	20
-- 
2.39.0


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