diff options
| author | Geoff Levand <geoff@infradead.org> | 2011-11-08 12:37:26 (GMT) |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2011-11-16 03:47:54 (GMT) |
| commit | 72f3bea075287785ed32b777b6dd2636aa7002e8 (patch) | |
| tree | 44ed5dfbfe046d76add301dc8c4555a125a70b3d /arch/powerpc/platforms/ps3/platform.h | |
| parent | de1d9248eadd27539eba449b4d09428252e80c04 (diff) | |
| download | linux-fsl-qoriq-72f3bea075287785ed32b777b6dd2636aa7002e8.tar.xz | |
powerpc/ps3: Fix lost SMP IPIs
Fixes the PS3 bootup hang introduced in 3.0-rc1 by:
commit 317f394160e9beb97d19a84c39b7e5eb3d7815a
sched: Move the second half of ttwu() to the remote cpu
Move the PS3's LV1 EOI call lv1_end_of_interrupt_ext() from ps3_chip_eoi()
to ps3_get_irq() for IPI messages.
If lv1_send_event_locally() is called between a previous call to
lv1_send_event_locally() and the coresponding call to
lv1_end_of_interrupt_ext() the second event will not be delivered to the
target cpu.
The PS3's SMP IPIs are implemented using lv1_send_event_locally(), so if two
IPI messages of the same type are sent to the same target in a relatively
short period of time the second IPI event can become lost when
lv1_end_of_interrupt_ext() is called from ps3_chip_eoi().
CC: stable@kernel.org
Signed-off-by: Geoff Levand <geoff@infradead.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/platforms/ps3/platform.h')
| -rw-r--r-- | arch/powerpc/platforms/ps3/platform.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/ps3/platform.h b/arch/powerpc/platforms/ps3/platform.h index 9a196a8..1a633ed 100644 --- a/arch/powerpc/platforms/ps3/platform.h +++ b/arch/powerpc/platforms/ps3/platform.h @@ -43,6 +43,7 @@ void ps3_mm_shutdown(void); void ps3_init_IRQ(void); void ps3_shutdown_IRQ(int cpu); void __init ps3_register_ipi_debug_brk(unsigned int cpu, unsigned int virq); +void __init ps3_register_ipi_irq(unsigned int cpu, unsigned int virq); /* smp */ |