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authorMartin Schwidefsky <schwidefsky@de.ibm.com>2013-08-27 09:56:55 +0200
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2013-08-28 09:19:30 +0200
commit0628a5fbe1b5af35ef5346443ff1056e257a7350 (patch)
tree9a3d662bca1e9e12dfe7c618545e961f9d29e14d /arch
parent0196c642f76c469c17ca09d7f904bccc123bac09 (diff)
downloadlinux-0628a5fbe1b5af35ef5346443ff1056e257a7350.tar.bz2
s390/tx: allow program interruption filtering in user space
A user space program using the transactional execution facility should be allowed to do program interrupt filtering. Do not set the transactional-execution program-interruption-filtering override (PIFO) bit in CR0. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/s390/kernel/ptrace.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/s390/kernel/ptrace.c b/arch/s390/kernel/ptrace.c
index 2bc08039140f..9556905bd3ce 100644
--- a/arch/s390/kernel/ptrace.c
+++ b/arch/s390/kernel/ptrace.c
@@ -60,11 +60,11 @@ void update_cr_regs(struct task_struct *task)
__ctl_store(cr, 0, 2);
cr_new[1] = cr[1];
- /* Set or clear transaction execution TXC/PIFO bits 8 and 9. */
+ /* Set or clear transaction execution TXC bit 8. */
if (task->thread.per_flags & PER_FLAG_NO_TE)
- cr_new[0] = cr[0] & ~(3UL << 54);
+ cr_new[0] = cr[0] & ~(1UL << 55);
else
- cr_new[0] = cr[0] | (3UL << 54);
+ cr_new[0] = cr[0] | (1UL << 55);
/* Set or clear transaction execution TDC bits 62 and 63. */
cr_new[2] = cr[2] & ~3UL;
if (task->thread.per_flags & PER_FLAG_TE_ABORT_RAND) {