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author | Jens Axboe <axboe@kernel.dk> | 2013-02-20 08:26:06 +0100 |
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committer | Jens Axboe <axboe@kernel.dk> | 2013-02-20 08:26:06 +0100 |
commit | d4308febf3551d46884561b7c3fdd62ad3ca7ff2 (patch) | |
tree | b8c48122df7c36761c6fb5d70647a09605892b9f /arch/powerpc/kernel/time.c | |
parent | c206c70924737db6836382c09ad2dacd04bb6204 (diff) | |
parent | 087ffecdaa1875cc683a7a5bc0695b3ebfce3bad (diff) | |
download | blackbird-op-linux-d4308febf3551d46884561b7c3fdd62ad3ca7ff2.tar.gz blackbird-op-linux-d4308febf3551d46884561b7c3fdd62ad3ca7ff2.zip |
Merge branch 'stable/for-jens-3.9' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen into for-3.9/drivers
Konrad writes:
Please git pull the following branch:
git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen.git stable/for-jens-3.9
which has bug-fixes that did not make it in v3.8. They all are marked as
material for the stable tree as well. There are two bug-fixes for
the code that has been in there for some time (that is the Jan's fix
and one of mine). And there are two bug-fixes for the persistent grant
feature that debuted in v3.8 for xen blk[back|front]end.
Diffstat (limited to 'arch/powerpc/kernel/time.c')
-rw-r--r-- | arch/powerpc/kernel/time.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c index 6f6b1cccc916..127361e093f4 100644 --- a/arch/powerpc/kernel/time.c +++ b/arch/powerpc/kernel/time.c @@ -494,10 +494,15 @@ void timer_interrupt(struct pt_regs * regs) set_dec(DECREMENTER_MAX); /* Some implementations of hotplug will get timer interrupts while - * offline, just ignore these + * offline, just ignore these and we also need to set + * decrementers_next_tb as MAX to make sure __check_irq_replay + * don't replay timer interrupt when return, otherwise we'll trap + * here infinitely :( */ - if (!cpu_online(smp_processor_id())) + if (!cpu_online(smp_processor_id())) { + *next_tb = ~(u64)0; return; + } /* Conditionally hard-enable interrupts now that the DEC has been * bumped to its maximum value |