Marcel Moolenaar eead2d551c Protect against broken hardware. In this particular case, protect against ... H/W not de-asserting the interrupt at all. On x86, and because of the following conditions, this results in a hard hang with interrupts disabled: 1. The uart(4) driver uses a spin lock to protect against concurrent access to the H/W. Spin locks disable and restore interrupts. 2. Restoring the interrupt on x86 always writes the flags register. Even if we're restoring the interrupt from disabled to disabled. 3. The x86 CPU has a short window in which interrupts are enabled when the flags register is written. 4. The uart(4) driver registers a fast interrupt by default. To catch this case, we first try to clear any pending H/W interrupts and in particular, before setting up the interrupt. This makes sure the interrupt is masked on the PIC. The interrupt handler now has a limit set on the number of iterations it'll go through to clear interrupt conditions. If the limit is hit, the handler will return FILTER_SCHEDULE_THREAD. The attach function will check for this return code and avoid setting up the interrupt and foce polling in that case. Obtained from: Juniper Networks, Inc.		2013-07-10 17:42:20 +00:00
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amd64	Clear m->object for the page taken from the delayed free list for	2013-07-10 09:24:03 +00:00
arm	Remove trailing whitespaces.	2013-07-10 10:15:38 +00:00
boot	default loader.conf: there is no need to load zpool.cache now	2013-07-09 08:40:05 +00:00
bsm	Implement chflagsat(2) system call, similar to fchmodat(2), but operates on	2013-03-21 22:59:01 +00:00
cam	Added 4K QUIRK for OCZ Vertex 4 SSDs	2013-07-09 10:41:17 +00:00
cddl	dtrace/fasttrap: install hook functions only after all data is	2013-07-09 09:05:00 +00:00
compat	- Move videodev headers from compat/linux to contrib/v4l (cp from vendor and	2013-07-06 19:59:06 +00:00
conf	Adding urtwn(4) firmware and related changes.	2013-07-10 08:21:09 +00:00
contrib	Fix build for gcc users by declaring variables for unions in structs which	2013-07-10 10:40:52 +00:00
crypto	Sync with KAME.	2013-07-09 22:04:35 +00:00
ddb
dev	Protect against broken hardware. In this particular case, protect against	2013-07-10 17:42:20 +00:00
fs	Reinstate the assertion from r253045.	2013-07-09 14:23:00 +00:00
gdb
geom	When panicing due to the gjournal overflow, print the geom metadata	2013-07-10 10:11:43 +00:00
gnu/fs/reiserfs	Garbage collect XFS bits which are now already completely disconnected	2013-03-02 15:33:54 +00:00
i386	Import HighPoint DC Series Data Center HBA (DC7280 and R750) driver.	2013-07-06 07:49:41 +00:00
ia64	Fix issues with zeroing and fetching the counters, on x86 and ppc64.	2013-07-01 02:48:27 +00:00
isa
kern	Add vfs_mounted and vfs_unmounted events so that components can be informed	2013-07-10 15:35:25 +00:00
kgssapi	Add support for host-based (Kerberos 5 service principal) initiator	2013-07-09 01:05:28 +00:00
libkern	Attempt to mitigate poor initialization of arc4 by one-shot	2013-04-19 00:30:52 +00:00
mips	Nearly a complete rewrite of elf.h.	2013-07-09 19:01:38 +00:00
modules	Adding urtwn(4) firmware and related changes.	2013-07-10 08:21:09 +00:00
net	Correct CTASSERT condition.	2013-07-09 15:10:27 +00:00
net80211	Make kassert_printf use __printflike.	2013-07-07 21:39:37 +00:00
netatalk	Add const qualifier to the dst parameter of the ifnet if_output method.	2013-04-26 12:50:32 +00:00
netgraph	Fix several typos	2013-05-12 16:43:26 +00:00
netinet	Extend debug logging of TCP timestamp related specification	2013-07-10 12:06:01 +00:00
netinet6	Correct the size of allocated memory to store array of counters.	2013-07-09 15:20:46 +00:00
netipsec	Migrate structs ahstat, espstat, ipcompstat, ipipstat, pfkeystat,	2013-07-09 10:08:13 +00:00
netipx	Mechanically substitute flags from historic mbuf allocator with	2012-12-05 08:04:20 +00:00
netnatm	Mechanically substitute flags from historic mbuf allocator with	2012-12-05 08:04:20 +00:00
netpfil	Improve locking strategy between keys hash and ID hash.	2013-06-13 06:07:19 +00:00
netsmb	Remove a reference to LK_DRAIN now that lockmgr(9) is gone from this	2013-06-28 20:21:13 +00:00
nfs	Move the NFS FHA (File Handle Affinity) code from sys/nfsserver to	2013-04-17 22:42:43 +00:00
nfsclient	A problem with the old NFS client where large writes to large files	2013-07-04 00:54:23 +00:00
nfsserver	- Convert the bufobj lock to rwlock.	2013-05-31 00:43:41 +00:00
nlm
ofed	Allow mlx4 devices to switch from Ethernet to Infiniband (and vice versa):	2013-07-08 21:25:12 +00:00
opencrypto	When porting XTS-related code from OpenBSD I forgot to update copyright (only	2013-02-20 22:59:53 +00:00
pc98	MFi386: revision 251039	2013-06-01 12:21:59 +00:00
pci	- Corrrect mispellings of word useful	2013-04-17 11:45:15 +00:00
powerpc	Fix indentation.	2013-07-02 07:17:56 +00:00
rpc	Add support for host-based (Kerberos 5 service principal) initiator	2013-07-09 01:05:28 +00:00
security	audit_proc_coredump: check return value of audit_new	2013-07-09 09:03:01 +00:00
sparc64	Fix issues with zeroing and fetching the counters, on x86 and ppc64.	2013-07-01 02:48:27 +00:00
sys	Add vfs_mounted and vfs_unmounted events so that components can be informed	2013-07-10 15:35:25 +00:00
teken
tools	Further refine the handling of stop signals in the NFS client. The	2013-02-21 19:02:50 +00:00
ufs	There are several code sequences like	2013-07-09 20:49:32 +00:00
vm	Fix typo in comment.	2013-07-09 13:22:30 +00:00
x86	Fix a KTR_BUSDMA format string.	2013-06-18 06:55:58 +00:00
xdr	Use m_get() and m_getcl() instead of compat macros.	2013-03-15 10:21:18 +00:00
xen	Adjust i386 Xen PV support for updated Xen interface files.	2013-06-17 01:43:07 +00:00
Makefile	Remove netncp cscope entry missed in r248097	2013-03-12 14:21:52 +00:00