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971 Commits

Author SHA1 Message Date
he 5ea0e70c68 Rearrange included headers and/or add include of <sys/types.h> and 
<sys/lock.h>, so that the mipsco port can build again, ref.
  http://mail-index.netbsd.org/port-mips/2006/08/04/0000.html
Reviewed by thorpej
 2006-08-04 22:42:36 +00:00
yamt f9458a6ba1 - in genfs_getpages, take g_glock earlier so that it can't be 
intervened by truncation.
  it also fixes a deadlock.  (g_glock vs pages locking order)
- uvm_vnp_setsize: modify v_size while holding v_interlock.

reviewed by Chuck Silvers.
 2006-07-22 08:47:56 +00:00
ad 3029ac48c7 - Use the LWP cached credentials where sane. 
- Minor cosmetic changes.
 2006-07-21 16:48:45 +00:00
drochner ef8848c74a Introduce a UVM_KMF_EXEC flag for uvm_km_alloc() which enforces an 
executable mapping. Up to now, only R+W was requested from pmap_kenter_pa.
On most CPUs, we get an executable mapping anyway, due to lack of
hardware support or due to lazyness in the pmap implementation. Only
alpha does obey VM_PROT_EXECUTE, afaics.
 2006-07-05 14:26:42 +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 9606b0accf uvm_swapin: process -> lwp in a comment. 2006-06-13 13:22:06 +00:00
christos 199372b21f prevent uninitialized variable. 2006-06-13 01:59:59 +00:00
christos 28bd7a84c0 Don't allocate > 1K on the stack. 2006-06-12 21:05:47 +00:00
kardel de4337ab21 merge FreeBSD timecounters from branch simonb-timecounters 
- struct timeval time is gone
  time.tv_sec -> time_second
- struct timeval mono_time is gone
  mono_time.tv_sec -> time_uptime
- access to time via
	{get,}{micro,nano,bin}time()
	get* versions are fast but less precise
- support NTP nanokernel implementation (NTP API 4)
- further reading:
  Timecounter Paper: http://phk.freebsd.dk/pubs/timecounter.pdf
  NTP Nanokernel: http://www.eecis.udel.edu/~mills/ntp/html/kern.html
 2006-06-07 22:33:33 +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
yamt 1075c99d89 introduce macros, UAREA_TO_USER and USER_TO_UAREA, 
to convert uarea VA into a pointer to struct user and vice versa,
so that MD code can change the layout in uarea.
 2006-05-22 13:43:54 +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
yamt c876210968 UVM_MAPFLAG: add missing parens. 2006-05-19 15:08:14 +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
christos 103d2f520c XXX: GCC uninitialized. 2006-05-14 05:30:31 +00:00
yamt 6957cc2e13 ubc_fault: use PMAP_CANFAIL. pointed by Jed Davis on tech-kern@. 2006-05-03 15:57:35 +00:00
yamt 38ae305f09 uvm_km_suballoc: consider kva overhead of "kmapent". 
fixes PR/31275 (me) and PR/32287 (Christian Biere).
 2006-05-03 14:12:01 +00:00
yamt 93127a7b4c amap_splitref: assert that origref->ar_amap is initialized 
by caller beforehand.
 2006-04-21 14:04:45 +00:00
yamt 0f4aad0236 - share some code between uvm_map_clip_end and uvm_map_clip_start. 
- add a map entry sanity-check function, uvm_mapent_check().

discussed on source-changes@.
 2006-04-21 14:03:01 +00:00
yamt c8d2679980 from Christian Ehrhardt: 
* uvm_loanzero may call uvm_analloc which will return with anon->an_lock
  locked. This lock is never dropped by uvm_loanzero and AFAICS the caller
  doesn't drop it either.
 2006-04-18 09:56:16 +00:00
yamt 4dec4ffdcb uvm_page_own: more assertions. 2006-04-13 08:33:18 +00:00
christos 14ac201ca2 Change previous to KASSERT per yamt's request. 2006-04-13 02:32:14 +00:00
yamt 047ff68ce8 ubc_fault: don't forget to clear PG_WANTED. 
reported by Michael Lorenz on tech-kern@.
 2006-04-13 02:17:42 +00:00
christos 7778288678 Coverity CID 762: Protect against NULL dereferencing entry->object.uvm_obj 
like we do a few lines before. Maybe all the tests should be changed
to UVM_ET_ISOBJ(), or the macro should do it internally?
 2006-04-13 01:11:08 +00:00
christos 3e31f5d682 Coverity CID 835: Check before dereferencing pg->uanon. 2006-04-13 01:05:17 +00:00
yamt 52a31ea140 uvm_pagermapin: nowait allocation for pagedaemon. 2006-04-11 09:29:40 +00:00
yamt c03e4d19d3 add assertions. 2006-04-11 09:28:14 +00:00
uebayasi c515049d02 Update comment to match reality (vm_physmemseg -> vm_physseg). 2006-04-06 07:18:23 +00:00
yamt 9f6a649d14 uvm_km_pgremove/uvm_km_pgremove_intrsafe: fix assertions. 2006-04-05 21:56:24 +00:00
christos 435a7d0d03 Coverity CID 2721: Avoid bitching for impossible cases, by adding KASSERT. 2006-04-05 19:49:28 +00:00
yamt 4038c2995b uvm_km_check_empty: fix an assertion. 2006-03-17 09:37:55 +00:00
drochner e10923fd37 -clean up the interface to uvm_fault: the "fault type" didn't serve 
any purpose (done by a macro, so we don't save any cycles for now)
-kill vm_fault_t; it is not needed for real faults, and for simulated
 faults (wiring) it can be replaced by UVM internal flags
-remove <uvm/uvm_fault.h> from uvm_extern.h again
 2006-03-15 18:09:25 +00:00
yamt ec5a93183a merge yamt-uio_vmspace branch. 
- use vmspace rather than proc or lwp where appropriate.
  the latter is more natural to specify an address space.
  (and less likely to be abused for random purposes.)
- fix a swdmover race.
 2006-03-01 12:38:10 +00:00
drochner 2d1a0b57b6 kill the "fault_type" argument to pager's pgo_fault() methods 
it is never used
(and using it would comprise an abstraction violation imho)
 2006-02-22 22:28:18 +00:00
bjh21 0638b201c9 Include page ownership information in the output of the DDB "show all pages" 
command if UVM_PAGE_TRKOWN is enabled.
 2006-02-22 22:20:56 +00:00
bjh21 ed2f09f139 Add a "show all pages" command to DDB which prints one line per physical 
page in the system.  Useful for getting some idea where all your memory's
gone, at least on a sufficiently small system.
 2006-02-19 18:52:29 +00:00
perry fbae48b901 Change "inline" back to "__inline" in .h files -- C99 is still too 
new, and some apps compile things in C89 mode. C89 keywords stay.

As per core@.
 2006-02-16 20:17:12 +00:00
yamt 9040ed946b - amap_copy: take a "flags" argument instead of booleans. 
- add AMAP_COPY_NOMERGE flag, and use it for uvm_map_extract.
  PR/32806 from Julio M. Merino Vidal.
 2006-02-15 14:06:45 +00:00
yamt f382834c1a share some code between uvmpd_scan_inactive and uvmpd_scan. 2006-02-14 15:06:27 +00:00
yamt 16f42c29a4 fix a compilation problem where PAGE_SHIFT is not a constant. 
pointed by Chuck Silvers.
 2006-02-14 02:28:21 +00:00
yamt e6e15660e2 remove an outdated comment. 2006-02-13 14:41:22 +00:00
yamt 62eb3a15e1 factor out swap clustering code. 2006-02-12 09:19:59 +00:00
yamt 2a89e06daa uvm_pageunwire: use uvm_pageactivate rather than a copy. 2006-02-12 09:19:27 +00:00
yamt a3af4c1530 remove the following options. no objections on tech-kern@. 
UVM_PAGER_INLINE
	UVM_AMAP_INLINE
	UVM_PAGE_INLINE
	UVM_MAP_INLINE
 2006-02-11 12:45:07 +00:00
simonb 8b00a8c689 Make a note that some counters should be 64-bit as they wrap far to 
quickly.
 2006-02-10 00:53:04 +00:00
yamt acb669a7cf handle "strange" filesystems like layered filesystems and tmpfs, 
where pgo_get returns pages which don't belong to the uobj.
also fix an XXX in uvm_loananon and lock-unlock mismatch in uvm_loanuobj.

PR/28372, PR/32665 (Alan Barrett).
 2006-01-31 14:11:25 +00:00