This is a note to let you know that I've just added the patch titled
s390: fix control register update
to the 3.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
s390-fix-control-register-update.patch
and it can be found in the queue-3.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From a8a934e44f2bd0ed613e1aa0471e3478c6a9228a Mon Sep 17 00:00:00 2001
From: Martin Schwidefsky <schwidefsky@xxxxxxxxxx>
Date: Tue, 1 Apr 2014 13:45:33 +0200
Subject: s390: fix control register update
From: Martin Schwidefsky <schwidefsky@xxxxxxxxxx>
commit a8a934e44f2bd0ed613e1aa0471e3478c6a9228a upstream.
The git commit c63badebfebacdba827ab1cc1d420fc81bd8d818
"s390: optimize control register update" broke the update for
control register 0. After the update do the lctlg from the correct
value.
Signed-off-by: Martin Schwidefsky <schwidefsky@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/s390/kernel/ptrace.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/s390/kernel/ptrace.c
+++ b/arch/s390/kernel/ptrace.c
@@ -64,7 +64,7 @@ void update_cr_regs(struct task_struct *
if (task->thread.per_flags & PER_FLAG_NO_TE)
cr_new &= ~(1UL << 55);
if (cr_new != cr)
- __ctl_load(cr, 0, 0);
+ __ctl_load(cr_new, 0, 0);
/* Set or clear transaction execution TDC bits 62 and 63. */
__ctl_store(cr, 2, 2);
cr_new = cr & ~3UL;
Patches currently in stable-queue which might be from schwidefsky@xxxxxxxxxx are
queue-3.14/s390-fix-control-register-update.patch
queue-3.14/s390-cio-fix-driver-callback-initialization-for-ccw-consoles.patch
queue-3.14/s390-bitops-atomic-add-missing-memory-barriers.patch
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