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| author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2013-08-23 14:45:58 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2013-08-28 09:19:23 +0200 |
| commit | 0587d409ec53312f735d2004d5f47f8effee1ea9 (patch) | |
| tree | 7ab956aaf3d7d238f8bd40a8f50d60302cb3363a /arch/s390/kernel/process.c | |
| parent | 6b169ac9b4342ff3a1499bdeb7596aa4f1bc401b (diff) | |
| download | linux-0587d409ec53312f735d2004d5f47f8effee1ea9.tar.gz | |
s390/time: return with irqs disabled from psw_idle
Modify the psw_idle waiting logic in entry[64].S to return with
interrupts disabled. This avoids potential issues with udelay
and interrupt loops as interrupts are not reenabled after
clock comparator interrupts.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/kernel/process.c')
| -rw-r--r-- | arch/s390/kernel/process.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c index 2bc3eddae34afd..c5dbb335716d5e 100644 --- a/arch/s390/kernel/process.c +++ b/arch/s390/kernel/process.c @@ -71,6 +71,7 @@ void arch_cpu_idle(void) } /* Halt the cpu and keep track of cpu time accounting. */ vtime_stop_cpu(); + local_irq_enable(); } void arch_cpu_idle_exit(void) |