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269 Commits

Author SHA1 Message Date
yamt ac54aa2f64 vm_map_locked_p: add comments 2009-01-13 14:04:35 +00:00
ad ae6c4143ce Move a couple of calls to pmap_update(). 2008-12-20 11:33:38 +00:00
cegger 9b87d582bd kill MALLOC and FREE macros. 2008-12-17 20:51:31 +00:00
christos 9a5d3f2817 replace bitmask_snprintf(9) with snprintb(3) 2008-12-16 22:35:21 +00:00
ad b5413f0358 It's easier for kernel reserve pages to be consumed because the pagedaemon 
serves as less of a barrier these days. Restrict provision of kernel reserve
pages to kmem and one of these cases:

- doing a NOWAIT allocation
- caller is a realtime thread
- caller is a kernel thread
- explicitly requested, for example by the pmap
 2008-12-13 11:34:43 +00:00
ad a371a02d26 PR port-amd64/32816 amd64 can not load lkms 
Change some assertions to partially allow for VM_MAP_IS_KERNEL(map) where
map is outside the range of kernel_map.
 2008-12-01 10:54:57 +00:00
matt 5698938787 Make uvm_map.? use <sys/rb.h> instead of <sys/tree.h>. Change the 
ambiguous members ownspace/space to gap/maxgap.  Add some evcnt for
evaluation of lookups using tree/list.  Drop threshold of using
tree for lookups from > 30 to > 15.

Bump kernel version to 4.99.71
 2008-07-29 00:03:06 +00:00
matt ad65eb54bc Add PMAP_KMPAGE flag for pmap_kenter_pa. This allows pmaps to know that 
the page being entered is being for the kernel memory allocator.  Such pages
should have no references and don't need bookkeeping.
 2008-07-16 00:11:27 +00:00
skrll 84009eaecf English improvement in comments. 
"seems good to me :)" from yamt.
 2008-07-11 07:09:18 +00:00
ad f00b42c246 Back out previous. 2008-06-06 14:01:32 +00:00
ad ad1863a64a Wrap an expensive check in DIAGNOSTIC. 2008-06-06 13:52:56 +00:00
ad 5d66fa5745 - Switch off the map evcnts by default. 
- SAVE_HINT() doesn't need to be atomic.
 2008-06-04 17:47:40 +00:00
ad 06c343ac94 vm_page: put TAILQ_ENTRY into a union with LIST_ENTRY, so we can use both. 2008-06-04 12:41:40 +00:00
ad 0d151db6c9 Don't needlessly acquire v_interlock. 2008-06-02 16:00:33 +00:00
ad 8350e2a9e8 Missing cv_destroy(). 2008-05-31 13:00:03 +00:00
ad 7d6bc631b9 Disable preemption while swapping pmap. 2008-04-27 11:39:46 +00:00
yamt fb0cfeb7dd fix a locking botch. PR/38415 from Wolfgang Solfrank. 2008-04-26 13:44:00 +00:00
yamt 5f4f3b8ca8 fix "stale map" assertions. PR/38153 from Sarton O'Brien. 2008-03-04 09:32:01 +00:00
chris 855792073c Add some more missing pmap_update()s following pmap_kremove()s. 2008-02-23 17:27:58 +00:00
yamt 2b40f35040 push pmap_clear_reference calls into pdpolicy code, where reference bits 
actually matter.
 2008-01-18 10:48:23 +00:00
yamt 74e0872eca simplify locking and remove vm_map_upgrade/downgrade. 
this fixes a deadlock due to read-lock recursion of map->lock.
 2008-01-08 13:09:55 +00:00
ad 4a780c9ae2 Merge vmlocking2 to head. 2008-01-02 11:48:20 +00:00
yamt 0c38201391 add ddb "whatis" command. inspired from solaris ::whatis dcmd. 2007-12-13 02:45:09 +00:00
xtraeme f444fd7856 Make this build without LOCKDEBUG (the if statement that uses 
LOCKDEBUG_MEM_CHECK).
 2007-11-26 08:22:32 +00:00
yamt 1a95aafc2b uvm_map_extract: for UVM_EXTRACT_QREF, mark entries UVM_MAP_NOMERGE. 2007-11-26 08:20:46 +00:00
yamt 89169ed40b uvm_unmap1: LOCKDEBUG_MEM_CHECK for kernel_map. 2007-11-26 08:15:19 +00:00
yamt 0de985a71c uvm_map_reserve: don't ignore alignment. fixes mremap. 2007-10-15 11:24:30 +00:00
skrll 0d58a1f020 Don't restrict the offset when allocating a map entry for in-kernel map - 
use UVM_UNKNOWN_OFFSET in the call to uvm_map_prepare.

This fixes a '"panic: malloc: out of space in kmem_map" when it's not
really' testcase of mine, and one reported to me by chuq. This is likely
to fix PR/35587 as well.

Looks/seems fine to me from chuq and yamt. Thanks.
 2007-10-12 06:45:17 +00:00
ad 7dad9f7391 Merge from vmlocking: 
- Split vnode::v_flag into three fields, depending on field locking.
- simple_lock -> kmutex in a few places.
- Fix some simple locking problems.
 2007-10-10 20:42:20 +00:00
ad a412ed5978 Also initialize map->lock for INTRSAFE maps. 2007-08-20 13:34:52 +00:00
ad f6481c29d3 uvmspace_free: destroy locks. 2007-08-20 13:33:47 +00:00
ad 4688843d2b Merge unobtrusive locking changes from the vmlocking branch. 2007-07-21 19:21:53 +00:00
ad 88ab7da936 Merge some of the less invasive changes from the vmlocking branch: 
- kthread, callout, devsw API changes
- select()/poll() improvements
- miscellaneous MT safety improvements
 2007-07-09 20:51:58 +00:00
ad 59d979c5f1 Pass an ipl argument to pool_init/POOL_INIT to be used when initializing 
the pool's lock.
 2007-03-12 18:18:22 +00:00
christos 53524e44ef Kill caddr_t; there will be some MI fallout, but it will be fixed shortly. 2007-03-04 05:59:00 +00:00
thorpej b3667ada6d TRUE -> true, FALSE -> false 2007-02-22 06:05:00 +00:00
thorpej 712239e366 Replace the Mach-derived boolean_t type with the C99 bool type. A 
future commit will replace use of TRUE and FALSE with true and false.
 2007-02-21 22:59:35 +00:00
yamt 1a7bc55dcc remove some __unused from function parameters. 2006-11-01 10:17:58 +00:00
uwe 5704a46a71 uvm_page_printall: With new PQ_* flags pg->pqflags no longer fits and 
makes the output of "show all pages" ragged.  Widen the field to 4 chars.
 2006-10-26 20:00:52 +00:00
christos 4d595fd7b1 - sprinkle __unused on function decls. 
- fix a couple of unused bugs
- no more -Wno-unused for i386
 2006-10-12 01:30:41 +00:00
yamt 8e991698b9 revert a change which was unintentionally slipped in via yamt-pdpolicy branch. 2006-09-16 07:14:38 +00:00
yamt 9d3e3eab23 merge yamt-pdpolicy branch. 
- separate page replacement policy from the rest of kernel
	- implement an alternative replacement policy
 2006-09-15 15:51:12 +00:00
yamt d447115889 make amap use kmem_alloc, rather than malloc. 
(ie. make it use kernel_map, rather than kmem_map.)
kmem_map is more restricted than kernel_map,
and there's no point for amap to use it.
 2006-06-25 08:03:46 +00:00
yamt c24f70bcad move wait points for kva from upper layers to vm_map. PR/33185 #1. 
XXX there is a concern about interaction with kva fragmentation.
see: http://mail-index.NetBSD.org/tech-kern/2006/05/11/0000.html
 2006-05-25 14:27:28 +00:00
elad b3e7e1b010 Better implementation of PaX MPROTECT, after looking some more into the 
code and not trying to use temporary solutions.

Lots of comments and help from YAMAMOTO Takashi, also thanks to the PaX
author for being quick to recognize that something fishy's going on. :)

Hook up in mmap/vmcmd rather than (ugh!) uvm_map_protect().

Next time I suggest to commit a temporary solution just revoke my
commit bit.
 2006-05-20 15:45:37 +00:00
elad 04d63f90b5 Introduce PaX MPROTECT -- mprotect(2) restrictions used to strengthen 
W^X mappings.

Disabled by default.

First proposed in:

	http://mail-index.netbsd.org/tech-security/2005/12/18/0000.html

More information in:

	http://pax.grsecurity.net/docs/mprotect.txt

Read relevant parts of options(4) and sysctl(3) before using!

Lots of thanks to the PaX author and Matt Thomas.
 2006-05-16 00:08:24 +00:00
elad fc9422c9d9 integrate kauth. 2006-05-14 21:31:52 +00:00
yamt de6ea5711e - rename uvm_tree_sanity to uvm_map_check and add some 
(non tree related) checks.
- remove treesanity_label.  instead, just panic if any corruption is detected.
 2006-05-14 08:22:50 +00:00
yamt 37f3579cf8 - uvm_mapent_trymerge: don't forget to update hints. 
- clear_hints: new function.
- uvm_map_replace: use clear_hints.  no functional change.
- add some assertions.
 2006-05-14 08:21:36 +00:00
yamt be55e1f38a update first_free correctly. 2006-05-14 08:20:35 +00:00