John David Anglin c207a76bf1 parisc: only re-enable interrupts if we need to schedule or deliver signals when returning to userspace ... Helge and I have found that we have a kernel stack overflow problem which causes a variety of random failures. Currently, we re-enable interrupts when returning from an external interrupt incase we need to schedule or delivery signals. As a result, a potentially unlimited number of interrupts can occur while we are running on the kernel stack. It is very limited in space (currently, 16k). This change defers enabling interrupts until we have actually decided to schedule or delivery signals. This only occurs when we about to return to userspace. This limits the number of interrupts on the kernel stack to one. In other cases, interrupts remain disabled until the final return from interrupt (rfi). Signed-off-by: John David Anglin <dave.anglin@bell.net> Signed-off-by: Helge Deller <deller@gmx.de>		2013-05-07 20:33:03 +02:00
..
configs	kconfig: rename CONFIG_EMBEDDED to CONFIG_EXPERT	2011-01-20 17:02:05 -08:00
hpux	[PARISC] hpux: Remove obsolete regs parameter from do_execve() in hpux_execve()	2013-01-30 13:26:57 +11:00
include	parisc: implement atomic64_dec_if_positive()	2013-05-06 23:10:04 +02:00
kernel	parisc: only re-enable interrupts if we need to schedule or deliver signals when returning to userspace	2013-05-07 20:33:03 +02:00
lib	parisc: Provide __ucmpdi2 to resolve undefined references in 32 bit builds.	2013-04-25 22:36:15 +02:00
math-emu	parisc: avoid undefined shift in cnv_float.h	2013-01-07 23:06:22 +01:00
mm	mm/parisc: use common help functions to free reserved pages	2013-04-29 15:54:30 -07:00
oprofile	oprofile: more whitespace fixes	2008-10-15 20:55:51 +02:00
defpalo.conf
install.sh	kbuild: use INSTALLKERNEL to select customized installkernel script	2009-09-20 12:18:14 +02:00
Kconfig	parisc: implement atomic64_dec_if_positive()	2013-05-06 23:10:04 +02:00
Kconfig.debug	Kconfig: consolidate CONFIG_DEBUG_STRICT_USER_COPY_CHECKS	2013-04-30 17:04:09 -07:00
Makefile	parisc: fix NATIVE set up in build	2013-05-06 23:09:33 +02:00
nm