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0a752e9843
freebsd-skq/sys
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Alan Cox 0a752e9843 Prevent the unexpected deallocation of a page table page while performing 
pmap_copy().  This entails additional locking in pmap_copy() and the
addition of a "flags" parameter to the page table page allocator for
specifying whether it may sleep when memory is unavailable.  (Already,
pmap_copy() checks the availability of memory, aborting if it is scarce.
In theory, another CPU could, however, allocate memory between
pmap_copy()'s check and the call to the page table page allocator,
causing the current thread to release its locks and sleep.  This change
makes this scenario impossible.)

Reviewed by: tegge@
2004-09-29 19:20:40 +00:00
..
alpha - Add support for "paging" in stack trace output. That is, when you do 2004-09-20 19:05:32 +00:00
amd64 Prevent the unexpected deallocation of a page table page while performing 2004-09-29 19:20:40 +00:00
arm Calling fuword from fuword32 with bl and without returning after is really a bad 2004-09-28 14:39:26 +00:00
boot Fixed exiting from pager using the `q' key while paging 2004-09-29 13:43:55 +00:00
cam For removable devices without media we set a zero mediasize but a non-zero 2004-09-05 21:15:58 +00:00
coda Do not use devsw() but si_devsw direction. This is still bogus but a 2004-09-23 12:19:24 +00:00
compat Add a proc *p pointer for td->td_proc to make this code easier to read. 2004-09-24 20:26:15 +00:00
conf Be consistant; make the memrange bit be part of the mem module like 2004-09-28 07:29:54 +00:00
contrib Add an additional struct inpcb * argument to pfil(9) in order to enable 2004-09-29 04:54:33 +00:00
crypto
ddb Refactor a bunch of scheduler code to give basically the same behaviour 2004-09-05 02:09:54 +00:00
dev Only fall back to probing the floppy drives via hints if there is a failure 2004-09-29 19:08:34 +00:00
doc
fs XXX mark two places where we do not hold a threadcount on the dev when 2004-09-24 08:32:36 +00:00
gdb Comment-out the debugging printf I left in in case there were some 2004-08-10 19:32:33 +00:00
geom Protect the start/end counts on consumers and providers with the up/down 2004-09-28 11:56:37 +00:00
gnu Desupport device nodes on EXT2 filesystems. 2004-09-27 20:38:46 +00:00
i4b Kill count device support from config. I've changed the last few 2004-08-30 23:03:58 +00:00
i386 Prevent the unexpected deallocation of a page table page while performing 2004-09-29 19:20:40 +00:00
ia64 ...And fix WITNESS builds: declare syscallnames. 2004-09-26 20:39:56 +00:00
isa Converge towards i386. I originally resisted creating <machine/pc/bios.h> 2004-09-24 01:08:34 +00:00
isofs/cd9660 Hold proper thread count while frobbing drivers ioctl. 2004-09-24 07:24:02 +00:00
kern Account for alias devices when tearing them down in destroy_dev() so we 2004-09-29 16:38:38 +00:00
libkern Move the kernel-specific logic to adjust frompc from MI to MD. For 2004-08-27 19:42:35 +00:00
modules Add the memrange bits to the loadable module. 2004-09-28 07:26:00 +00:00
net Add an additional struct inpcb * argument to pfil(9) in order to enable 2004-09-29 04:54:33 +00:00
net80211
netatalk Inline umich license from COPYRIGHT to make it clear what license the 2004-08-10 03:23:05 +00:00
netatm
netgraph Fix an issue with ng_tty which (ab)used the tty->t_sc field which is 2004-09-17 22:26:27 +00:00
netinet Add an additional struct inpcb * argument to pfil(9) in order to enable 2004-09-29 04:54:33 +00:00
netinet6 Add an additional struct inpcb * argument to pfil(9) in order to enable 2004-09-29 04:54:33 +00:00
netipsec Correct handling of SADB_UPDATE and SADB_ADD requests. key_align may split 2004-09-26 02:01:27 +00:00
netipx Mark Netgraph TTY, KAME IPSEC, and IPX/SPX as requiring Giant for correct 2004-08-28 15:24:53 +00:00
netkey The KAME IPSEC implementation at one point used its own pseudo-random 2004-09-02 20:14:03 +00:00
netnatm
netncp
netsmb
nfs
nfs4client Remove NFS4 vop method vector for devices: we are desupporing device nodes 2004-09-27 20:02:50 +00:00
nfsclient Remove support for using NFS device nodes. 2004-09-28 08:50:01 +00:00
nfsserver Convert a mtx_lock(&Giant) to a mtx_unlock(&Giant) in nfsrv_link() to 2004-08-25 16:52:59 +00:00
opencrypto Don't acquire Giant in cryptof_close(), as the code is intended to be 2004-08-10 03:26:17 +00:00
pc98 Merged from sys/dev/sio/sio.c: more tty related changes. 2004-09-20 14:01:38 +00:00
pccard Move PNP IDs back into oldcard files 2004-08-13 06:57:31 +00:00
pci fix jumbo frames as much as they can be fixed for re. We now cap the MTU 2004-09-28 18:22:24 +00:00
posix4
powerpc Add sc_iostart to softc and unbreak the build. 2004-09-27 19:51:58 +00:00
rpc Prefer C99's __func__ over GCC's __FUNCTION__. 2004-09-23 18:25:46 +00:00
security Remove the debugging tunable, it was not being used. 2004-09-10 15:14:50 +00:00
sparc64 Add an assertion that the pcb_nsaved field of the pcb be less than 2004-09-28 16:36:58 +00:00
sys Add an additional struct inpcb * argument to pfil(9) in order to enable 2004-09-29 04:54:33 +00:00
tools
ufs Remove support for accessing device nodes in UFS/FFS. 2004-09-28 13:30:58 +00:00
vm Don't look for swap blocks in objects that aren't swap-backed. 2004-09-24 16:04:20 +00:00
Makefile Add a NO_BOOT knob to prevent building the boot blocks and loader. 2004-08-19 09:54:28 +00:00