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79d4e25bea
freebsd-nq/sys
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Bruce Evans 79d4e25bea Fixed panics in npx exception handling. When using IRQ13 exception 
handling, SMPng always switches the npx context away from curproc
before calling the handler, so the handler always paniced.  When using
exception 16 exception handling, SMPng sometimes switches the npx
context away from curproc before calling the handler, so the handler
sometimes paniced.  Also, we didn't lock the context while using it,
so we sometimes didn't detect the switch and then paniced in a less
controlled way.

Just lock the context while using it, and return without doing anything
except clearing the busy latch if the context is not for curproc.  This
fixes the exception 16 case and makes the IRQ13 case harmless.  In both
cases, the instruction that caused the exception is restarted and the
exception repeats.  In the exception 16 case, we soon get an exception
that can be handled without doing anything special.  In the IRQ13 case,
we get an easy to kill hung process.
2001-05-02 13:06:58 +00:00
..
alpha Undo part of the tangle of having sys/lock.h and sys/mutex.h included in 2001-05-01 08:13:21 +00:00
amd64 Fixed panics in npx exception handling. When using IRQ13 exception 2001-05-02 13:06:58 +00:00
arm/include Correct disordering which is corresponding to bde's fix to 2001-02-17 14:51:11 +00:00
boot Bring in ficl 2.05. 2001-04-29 02:36:36 +00:00
cam Fix up unit attention and selection timeout handling in various peripheral 2001-05-01 19:37:25 +00:00
coda Implement vop_std{get|put}pages() and add them to the default vop[]. 2001-05-01 08:34:45 +00:00
compat Undo part of the tangle of having sys/lock.h and sys/mutex.h included in 2001-05-01 08:13:21 +00:00
compile
conf Add a ``digi'' driver. 2001-05-02 01:08:09 +00:00
contrib/dev Send the remains (such as I have located) of "block major numbers" to 2001-03-26 12:41:29 +00:00
crypto Kernel crypto need binary key material, not symbolic ascii. 2001-03-10 13:02:58 +00:00
ddb Undo part of the tangle of having sys/lock.h and sys/mutex.h included in 2001-05-01 08:13:21 +00:00
dev Only define DEBUG if it's undefined. This should eventually go, but 2001-05-02 01:47:34 +00:00
fs Implement vop_std{get|put}pages() and add them to the default vop[]. 2001-05-01 08:34:45 +00:00
geom fix a number of printf format string warnings inside DEBUG ifdefs 2001-03-29 15:05:08 +00:00
gnu Remove blatantly pointless call to VOP_BMAP(). 2001-05-01 09:12:05 +00:00
i4b pseudo-device -> device in kernel config. 2001-05-01 11:26:14 +00:00
i386 Fixed panics in npx exception handling. When using IRQ13 exception 2001-05-02 13:06:58 +00:00
ia64 Overhaul of the SMP code. Several portions of the SMP kernel support have 2001-04-27 19:28:25 +00:00
isa Undo part of the tangle of having sys/lock.h and sys/mutex.h included in 2001-05-01 08:13:21 +00:00
isofs/cd9660 Implement vop_std{get|put}pages() and add them to the default vop[]. 2001-05-01 08:34:45 +00:00
kern Implement vop_std{get|put}pages() and add them to the default vop[]. 2001-05-01 08:34:45 +00:00
libkern Add function prototypes and base module for kernel side iconv library. 2001-04-09 09:39:29 +00:00
miscfs Implement vop_std{get|put}pages() and add them to the default vop[]. 2001-05-01 08:34:45 +00:00
modules Add a ``digi'' driver. 2001-05-02 01:08:09 +00:00
msdosfs Implement vop_std{get|put}pages() and add them to the default vop[]. 2001-05-01 08:34:45 +00:00
net Undo part of the tangle of having sys/lock.h and sys/mutex.h included in 2001-05-01 08:13:21 +00:00
netatalk Mechanical change to use <sys/queue.h> macro API instead of 2001-02-04 13:13:25 +00:00
netatm Silence some warnings 2001-03-20 10:42:49 +00:00
netgraph Don't reference a node after we dropped a reference to it 2001-04-11 22:04:47 +00:00
netinet Undo part of the tangle of having sys/lock.h and sys/mutex.h included in 2001-05-01 08:13:21 +00:00
netinet6 Fix typo in previous commit. 2001-04-20 08:43:20 +00:00
netipx Undo part of the tangle of having sys/lock.h and sys/mutex.h included in 2001-05-01 08:13:21 +00:00
netkey Undo part of the tangle of having sys/lock.h and sys/mutex.h included in 2001-05-01 08:13:21 +00:00
netnatm Change a couple of M_WAITOKs used in M_PREPEND() to M_TRYWAITs, which 2001-04-05 04:20:48 +00:00
netncp Undo part of the tangle of having sys/lock.h and sys/mutex.h included in 2001-05-01 08:13:21 +00:00
netns * Rename M_WAIT mbuf subsystem flag to M_TRYWAIT. 2000-12-21 21:44:31 +00:00
netsmb Undo part of the tangle of having sys/lock.h and sys/mutex.h included in 2001-05-01 08:13:21 +00:00
nfs Undo part of the tangle of having sys/lock.h and sys/mutex.h included in 2001-05-01 08:13:21 +00:00
nfsclient Undo part of the tangle of having sys/lock.h and sys/mutex.h included in 2001-05-01 08:13:21 +00:00
nfsserver Undo part of the tangle of having sys/lock.h and sys/mutex.h included in 2001-05-01 08:13:21 +00:00
ntfs Implement vop_std{get|put}pages() and add them to the default vop[]. 2001-05-01 08:34:45 +00:00
nwfs Implement vop_std{get|put}pages() and add them to the default vop[]. 2001-05-01 08:34:45 +00:00
pc98 Undo part of the tangle of having sys/lock.h and sys/mutex.h included in 2001-05-01 08:13:21 +00:00
pccard My fix to NEWCARD for getting the function type broke oldcard due to 2001-04-21 14:10:32 +00:00
pci Fix the definitions for memory bank sizes, which I somehow got wrong. 2001-04-26 16:40:45 +00:00
posix4 Undo part of the tangle of having sys/lock.h and sys/mutex.h included in 2001-05-01 08:13:21 +00:00
powerpc Undo part of the tangle of having sys/lock.h and sys/mutex.h included in 2001-05-01 08:13:21 +00:00
rpc Bring in a hybrid of SunSoft's transport-independent RPC (TI-RPC) and 2001-03-19 12:50:13 +00:00
svr4 This patchset fixes a large number of file descriptor race conditions. 2000-11-18 21:01:04 +00:00
sys Add a ``digi'' driver. 2001-05-02 01:08:09 +00:00
tools replace calls to non-existant bail() subroutine with calls to 2001-03-23 11:48:50 +00:00
ufs Use ufs_bmaparray() rather than VOP_BMAP() on our own vnodes. 2001-05-01 09:12:39 +00:00
vm Undo part of the tangle of having sys/lock.h and sys/mutex.h included in 2001-05-01 08:13:21 +00:00
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