1
linux/arch/sparc64
David S. Miller 5a606b72a4 [SPARC64]: Do not ACK an INO if it is disabled or inprogress.
This is also a partial workaround for a bug in the LDOM firmware which
double-transmits RX inos during high load.  Without this, such an
event causes the kernel to loop forever in the interrupt call chain
ACK'ing but never actually running the IRQ handler (and thus clearing
the interrupt condition in the device).

There is still a bad potential effect when double INOs occur,
not covered by this changeset.  Namely, if the INO is already on
the per-cpu INO vector list, we still blindly re-insert it and
thus we can end up losing interrupts already linked in after
it.

We could deal with that by traversing the list before insertion,
but that's too expensive for this edge case.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-16 04:04:05 -07:00
..
boot [SPARC64]: Add .gitignore file for sparc64 boot images. 2006-02-05 00:15:11 -08:00
kernel [SPARC64]: Do not ACK an INO if it is disabled or inprogress. 2007-07-16 04:04:05 -07:00
lib [SPARC64]: store-init needs trailing membar. 2007-03-19 13:27:33 -07:00
math-emu [SPARC64] math-emu: Delete debugging printk left by previous commit. 2006-03-20 01:13:53 -08:00
mm [SPARC64]: Fill holes in hypervisor APIs and fix KTSB registry. 2007-05-29 02:52:15 -07:00
oprofile [PATCH] Move Kprobes and Oprofile to "Instrumentation Support" menu 2005-11-07 07:53:35 -08:00
prom [SPARC64]: Report proper system soft state to the hypervisor. 2007-05-29 02:49:29 -07:00
solaris header cleaning: don't include smp_lock.h when not used 2007-05-08 11:15:07 -07:00
defconfig [SPARC64]: Update defconfig. 2007-05-14 04:19:01 -07:00
Kconfig [SPARC64]: Add LDOM virtual channel driver and VIO device layer. 2007-07-16 04:03:18 -07:00
Kconfig.debug [SPARC64]: Add irqtrace/stacktrace/lockdep support. 2006-12-10 02:39:09 -08:00
Makefile [SPARC64]: Stop putting -finline-limit=XXX into CFLAGS 2005-12-20 14:53:05 -08:00