I have a full update to the latest 4.18-rt pending, so I'll
confirm that these are part of it, and do the update that
way.
Cheers,
Bruce
On 2018-09-26 2:42 AM, zhe...@windriver.com wrote:
From: Sebastian Andrzej Siewior <bige...@linutronix.de>
The powerpc port won't compile and abort with "Error: operand out of
range" because the TIF_NEED_RESCHED_LAZY uses bit 20 which is larger
than 15 which is the upper limit.
Swap it with TIF_32BIT and fixup the assembly in one assembly file to
get it to compile again.
Signed-off-by: Sebastian Andrzej Siewior <bige...@linutronix.de>
To fix the following build error for powerpc, backport a commit released with
v4.18.5-rt3(https://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git/commit/?h=linux-4.18.y-rt&id=7bcb4eb241e37d111cbca61a86ea0da180a6f2b3).
arch/powerpc/kernel/entry_32.S: Assembler messages:
arch/powerpc/kernel/entry_32.S:384: Error: operand out of range
(0x000000000010ffef is not between 0x0000000000000000 and 0x000000000000ffff)
...
Signed-off-by: He Zhe <zhe...@windriver.com>
---
This is for preempt-rt/base.
arch/powerpc/include/asm/thread_info.h | 4 ++--
arch/powerpc/kernel/entry_64.S | 2 +-
2 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/arch/powerpc/include/asm/thread_info.h
b/arch/powerpc/include/asm/thread_info.h
index 4317598..15c2c09 100644
--- a/arch/powerpc/include/asm/thread_info.h
+++ b/arch/powerpc/include/asm/thread_info.h
@@ -82,7 +82,7 @@ extern int arch_dup_task_struct(struct task_struct *dst,
struct task_struct *src
#define TIF_SIGPENDING 1 /* signal pending */
#define TIF_NEED_RESCHED 2 /* rescheduling necessary */
#define TIF_FSCHECK 3 /* Check FS is USER_DS on return */
-#define TIF_32BIT 4 /* 32 bit binary */
+#define TIF_NEED_RESCHED_LAZY 4 /* lazy rescheduling necessary */
#define TIF_RESTORE_TM 5 /* need to restore TM
FP/VEC/VSX */
#define TIF_PATCH_PENDING 6 /* pending live patching update */
#define TIF_SYSCALL_AUDIT 7 /* syscall auditing active */
@@ -101,7 +101,7 @@ extern int arch_dup_task_struct(struct task_struct *dst,
struct task_struct *src
#define TIF_ELF2ABI 18 /* function descriptors must die! */
#endif
#define TIF_POLLING_NRFLAG 19 /* true if poll_idle() is polling
TIF_NEED_RESCHED */
-#define TIF_NEED_RESCHED_LAZY 20 /* lazy rescheduling necessary */
+#define TIF_32BIT 20 /* 32 bit binary */
/* as above, but as bit values */
#define _TIF_SYSCALL_TRACE (1<<TIF_SYSCALL_TRACE)
diff --git a/arch/powerpc/kernel/entry_64.S b/arch/powerpc/kernel/entry_64.S
index 0c519f5..9a2e564 100644
--- a/arch/powerpc/kernel/entry_64.S
+++ b/arch/powerpc/kernel/entry_64.S
@@ -168,7 +168,7 @@ system_call: /* label this so stack
traces look sane */
* based on caller's run-mode / personality.
*/
ld r11,SYS_CALL_TABLE@toc(2)
- andi. r10,r10,_TIF_32BIT
+ andis. r10,r10,_TIF_32BIT@h
beq 15f
addi r11,r11,8 /* use 32-bit syscall entries */
clrldi r3,r3,32
--
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