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28a21798c0
freebsd-skq/sys
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jkoshy 28a21798c0 - Special-case NMI handling on the AMD64. 
On entry or exit from the kernel the 'alltraps' and 'doreti' code
  used taken by normal traps disables interrupts to protect the
  critical sections where it is setting up %gs.

  This protection is insufficient in the presence of NMIs since NMIs
  can be taken even when the processor has disabled normal interrupts.
  Thus the NMI handler needs to actually read MSR_GBASE on entry to
  the kernel to determine whether a swap of %gs using 'swapgs' is
  needed.  However, reads of MSRs are expensive and integrating this
  check into the 'alltraps'/'doreti' path would penalize normal
  interrupts.

- Teach DDB about the 'nmi_calltrap' symbol.

Reviewed by:	bde, peter (older versions of this change)
2005-08-27 16:03:40 +00:00
..
alpha Move MINSIGSTKSZ from <machine/signal.h> to <machine/_limits.h> and rename 2005-08-20 16:44:41 +00:00
amd64 - Special-case NMI handling on the AMD64. 2005-08-27 16:03:40 +00:00
arm Move MINSIGSTKSZ from <machine/signal.h> to <machine/_limits.h> and rename 2005-08-20 16:44:41 +00:00
boot Add a "comconsole_speed" loader variable that can be used to change 2005-08-18 01:39:43 +00:00
bsm For consistency with more system include files, add a trailing '_' to 2005-05-29 16:11:34 +00:00
cam Merge the dev_clone and dev_clone_cred event handlers into a single 2005-08-08 19:55:32 +00:00
coda Merge the dev_clone and dev_clone_cred event handlers into a single 2005-08-08 19:55:32 +00:00
compat Rewrite linux_ifconf() to be more like ifconf() in net/if.c 2005-08-27 14:44:10 +00:00
conf Remove the el(4) driver for 3Com 3c501 ISA NICs from HEAD as threatened 2005-08-26 13:42:04 +00:00
contrib Wrap the new world order in __FreeBSD__ to ease future imports. 2005-08-09 11:59:02 +00:00
crypto Add VIA/ACE "PadLock" support as a crypto(9) driver. 2005-08-18 00:30:22 +00:00
ddb Remove the need to forward declare statics by moving them around. 2005-08-10 07:08:14 +00:00
dev fix CardBus issue for Compaq R3000 series laptop 2005-08-26 23:39:44 +00:00
doc
fs Handle device drivers with D_NEEDGIANT in a way which does not 2005-08-17 08:19:52 +00:00
gdb check return value of gdb_rx_varhex 2005-03-28 18:31:18 +00:00
geom Shuffle around the order in which the components are compiled. 2005-08-26 14:40:32 +00:00
gnu Repair this: 2005-07-09 18:30:31 +00:00
i4b Propagate rename of IFF_OACTIVE and IFF_RUNNING to IFF_DRV_OACTIVE and 2005-08-09 10:20:02 +00:00
i386 Remove the el(4) driver for 3Com 3c501 ISA NICs from HEAD as threatened 2005-08-26 13:42:04 +00:00
ia64 Move MINSIGSTKSZ from <machine/signal.h> to <machine/_limits.h> and rename 2005-08-20 16:44:41 +00:00
isa Add pnp and location info for the ISA bus. The pnp info is the 2005-08-01 07:03:10 +00:00
isofs/cd9660 - restore the ability to mount cd9660 filesystems as root by inverting 2005-08-14 04:19:36 +00:00
kern Two minor optimizations of fdalloc(): 2005-08-26 11:16:39 +00:00
libkern - Fix checking range of strings of struct iconv_add_in in libsmb and libkiconv, 2005-08-24 12:38:26 +00:00
modules Shuffle around the order in which the components are compiled. 2005-08-26 14:40:32 +00:00
net Fix a panic in softclock() if the interface is destroyed with a bpf consumer 2005-08-27 01:17:42 +00:00
net80211 revert 1.64: we cannot use the channel characteristics to decide when to 2005-08-13 17:50:21 +00:00
netatalk Eliminate MAC entry point mac_create_mbuf_from_mbuf(), which is 2005-07-05 23:39:51 +00:00
netatm Propagate rename of IFF_OACTIVE and IFF_RUNNING to IFF_DRV_OACTIVE and 2005-08-09 10:20:02 +00:00
netgraph Cleanup the reader/writer policy in netgraph(4). Assign 2005-08-26 15:14:33 +00:00
netinet Add newline to debuging printf. 2005-08-26 15:27:18 +00:00
netinet6 added a missing unlock (just do the same thing as in netinet/raw_ip.c) 2005-08-18 11:11:27 +00:00
netipsec Correct typo in a comment describing vshiftl(). 2005-06-02 23:56:10 +00:00
netipx Stop embedding struct ifnet at the top of driver softcs. Instead the 2005-06-10 16:49:24 +00:00
netkey SADB_UPDATE did not return an error when key length is invalid. 2005-08-22 07:05:14 +00:00
netnatm Propagate rename of IFF_OACTIVE and IFF_RUNNING to IFF_DRV_OACTIVE and 2005-08-09 10:20:02 +00:00
netncp Change API of mb_copy_t in libmchain so that netsmb can handle 2005-07-29 13:22:37 +00:00
netsmb Merge the dev_clone and dev_clone_cred event handlers into a single 2005-08-08 19:55:32 +00:00
nfs Fixes for NFS crashes on architectures that require strict alignment. 2005-07-14 20:08:27 +00:00
nfs4client - We want if (mrep != NULL) not if (m_freem != NULL). m_freem will never 2005-04-25 05:11:19 +00:00
nfsclient FIx for a bug in the change that made nfs_timer() MPSAFE. We need to 2005-07-27 15:06:26 +00:00
nfsserver NFS write gathering defers execution of NFS server write requests to wait 2005-04-17 16:25:36 +00:00
opencrypto Fix bogus check. It was possible to panic the kernel by giving 0 length. 2005-08-18 11:58:03 +00:00
pc98 MFi386: revision 1.1204. 2005-07-21 11:13:12 +00:00
pccard Change a directory layout for pc98. 2005-05-10 12:02:18 +00:00
pci - Use m_defrag() instead of homerolling our own variant 2005-08-26 14:27:38 +00:00
posix4 Introduce MAC Framework and MAC Policy entry points to label and control 2005-05-04 10:39:15 +00:00
powerpc Move MINSIGSTKSZ from <machine/signal.h> to <machine/_limits.h> and rename 2005-08-20 16:44:41 +00:00
rpc - Don't call rpcclnt_realign() if we don't have any mbufs to realign. 2005-03-19 01:16:25 +00:00
security Insert a series of place-holder function pointers in mac_policy.h for 2005-08-08 16:09:33 +00:00
sparc64 Move MINSIGSTKSZ from <machine/signal.h> to <machine/_limits.h> and rename 2005-08-20 16:44:41 +00:00
sys Bump __FreeBSD_version for memmem(3). 2005-08-25 19:49:53 +00:00
tools Allow EVFILT_VNODE events to work on every filesystem type, not just 2005-06-09 20:20:31 +00:00
ufs Set the mountpoint path in the superblock (fs_fsmnt) at mount-time 2005-08-21 22:06:41 +00:00
vm Do not use vm_pager_init() to initialize vnode_pbuf_freecnt variable. 2005-08-13 20:21:33 +00:00
Makefile When building cscopnamefile, default architecture to ${MACHINE}, not i386. 2005-03-08 00:09:41 +00:00