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From 3741b49b04d3f06ee4d50d36c4f659a414189844 Mon Sep 17 00:00:00 2001
From: Salvatore Bonaccorso <carnil@debian.org>
Date: Fri, 20 Jan 2023 19:23:03 +0100
Subject: [PATCH 316/323] rt: arm64: make _TIF_WORK_MASK bits contiguous
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.10/older/patches-5.10.215-rt107.tar.xz
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 in the preempt-rt patch series.
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@ti.com>
Reported-by: Pavel Machek <pavel@denx.de>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/lkml/40de655e-26f3-aa7b-f1ec-6877396a9f1e@ti.com/
Signed-off-by: Salvatore Bonaccorso <carnil@debian.org>
Signed-off-by: Luis Claudio R. Goncalves <lgoncalv@redhat.com>
---
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 6eb36a2126e84..2afd9ceb66c96 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
--
2.44.0
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