linux/drivers/misc/sgi-xp
Robin Holt 891348ca0f SGI-XP: handle non-fatal traps
We found a user code which was raising a divide-by-zero trap.  That trap
would lead to XPC connections between system-partitions being torn down
due to the die_chain notifier callouts it received.

This also revealed a different issue where multiple callers into
xpc_die_deactivate() would all attempt to do the disconnect in parallel
which would sometimes lock up but often overwhelm the console on very
large machines as each would print at least one line of output at the
end of the deactivate.

I reviewed all the users of the die_chain notifier and changed the code
to ignore the notifier callouts for reasons which will not actually lead
to a system to continue on to call die().

[akpm@linux-foundation.org: fix ia64]
Signed-off-by: Robin Holt <holt@sgi.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-12-20 17:40:20 -08:00
..
Makefile sgi-xp: only build for ia64-sn2 when CONFIG_IA64_GENERIC specified 2008-10-30 11:38:46 -07:00
xp.h Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
xp_main.c x86: uv: xpc needs to provide an abstraction for uv_gpa 2009-12-16 07:20:13 -08:00
xp_nofault.S [IA64] run some drivers/misc/sgi-xp through scripts/Lindent 2008-04-22 15:08:29 -07:00
xp_sn2.c x86: uv: xpc needs to provide an abstraction for uv_gpa 2009-12-16 07:20:13 -08:00
xp_uv.c x86: uv: update XPC to handle updated BIOS interface 2009-12-16 07:20:14 -08:00
xpc.h sgi-xpc: clean up numerous globals 2009-04-13 15:04:33 -07:00
xpc_channel.c sgi-xpc: clean up numerous globals 2009-04-13 15:04:33 -07:00
xpc_main.c SGI-XP: handle non-fatal traps 2012-12-20 17:40:20 -08:00
xpc_partition.c sgi-xpc: XPC fails to discover partitions with all nasids above 128 2010-11-25 06:50:40 +09:00
xpc_sn2.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
xpc_uv.c drivers/misc/sgi-xp/xpc_uv.c: SGI XPC fails to load when cpu 0 is out of IRQ resources 2012-08-21 16:45:03 -07:00
xpnet.c net: remove NETIF_F_NO_CSUM feature bit 2011-11-16 17:43:12 -05:00