| From | Greg Kroah-Hartman <> | Subject | [PATCH 3.14 035/158] s390: fix control register update | Date | Sun, 4 May 2014 11:39:04 -0400 |
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3.14-stable review patch. If anyone has any objections, please let me know.
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From: Martin Schwidefsky <schwidefsky@de.ibm.com>
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@de.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- 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;
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