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225 Commits

Author SHA1 Message Date
cgd
76dbc1192b new specfs.h and fifo.h locations 1993-11-12 05:54:12 +00:00
cgd
9d0e9ed1c1 fix setup of b_dirtyoff and b_dirtyend when writing out a page. 
from Mike Hibler.
 1993-11-10 22:43:34 +00:00
cgd
56adbe979f make absent absent 1993-11-10 08:22:05 +00:00
cgd
d580099dde fix those last changes, and quiet a compiler warning. 1993-11-10 08:11:47 +00:00
cgd
554c91f74a change some flags back to bitfields, so it compiles. 1993-11-03 14:49:22 +00:00
cgd
64c1e3b2f5 new device pager from mike hibler, hibler@lamp. this is in its 'virgin' state 1993-11-03 14:48:42 +00:00
cgd
215649adeb from Mark Tinguely (tinguely@plains.NoDak.edu): record when processes are 
swapped...
 1993-10-19 02:54:09 +00:00
cgd
e98e3183fc get rid of a few ref's to buffer_map 1993-10-11 02:11:28 +00:00
cgd
13a840d756 generalize kernacc() to any protections in the function "kerncheckprot()", 
and prototype it.
 1993-10-06 23:38:19 +00:00
cgd
f09334ef6c we need the buffer hack again, now that we have a real vfs_bio... 1993-10-06 02:06:49 +00:00
cgd
95e5868ee2 allow an offset to *really* be passed in for mmap's on devices. 
From Julian Elischer.
 1993-10-02 00:00:21 +00:00
mycroft
00e8bf23cd Add `#ifdef DIAGNOSTIC' around check for dirty pages in persistent objects. 1993-09-23 22:20:29 +00:00
cgd
9c32bc786a make allproc be volatile, and cast things accordingly. 
suggested by torek, because CSRG had problems with reordering
of assignments to allproc leading to strange panics from kernels
compiled with gcc2...
 1993-09-15 22:30:32 +00:00
brezak
b4940ad7a0 Wrap iprintf, vm_object_print, vm_map_print to allow passing a printf function. 1993-09-13 14:10:35 +00:00
cgd
37e8d5291e get rid of bogosities of the form "vm_maxsaddr + MAXSSIZ", and replace 
them with USRSTACK.  the former was a hack by wfj to accomodate his screwy
execve() implementation.  the latter is a (minor) reversion to net/2.
 1993-09-04 01:29:22 +00:00
cgd
6a474f29e2 get rid of maxdmap, and seperate MAXDSIZ and MAXSSIZ in rlimit checking. 1993-09-04 00:37:54 +00:00
glass
2cb87de98b fixs long broken 'dequeue' macro which would expand to 'dequeue_head' which 
is never defined. added fix from my private sources:
#define dequeue_head(queue)     remqueue(queue, queue_first(queue))
no one noticed, because everyone used the 'remqueue' interface except me.
 1993-09-01 15:55:26 +00:00
deraadt
ae8b49f87b #ifdef pc532 in same places as #ifdef i386 1993-09-01 08:49:45 +00:00
deraadt
a87b4a30bd pagers are now options, not pseudo-devices 1993-08-30 07:09:20 +00:00
brezak
7f550be7fd Remove prototype for pmap_bootstrap() 1993-08-29 12:12:20 +00:00
cgd
405b084fe6 return some errors other than EIO from swstrategy() 1993-08-29 01:50:20 +00:00
brezak
15c3400ffe Machine independant changes to VM for handling non-contiguous memory. 1993-08-27 23:45:55 +00:00
andrew
4e65827b6c Moved vm_map_create()'s out-of-maps panic to a more appropriate place. 1993-08-19 03:13:24 +00:00
mycroft
fbd4257135 Put `#ifdef notyet' around some code which is currently defunct. 1993-08-14 10:02:30 +00:00
andrew
22dff5862a Removed the user area protection gunk I painstakingly removed in revision 
1.9.  It has not been necessary since then due to a segment fixup made to
machdep.c that prevents access to anything above MAX_VMUSER_ADDRESS.
 1993-08-13 03:50:02 +00:00
cgd
acf8d8b584 deal with ddb bogosities 1993-08-07 06:03:02 +00:00
cgd
26817f18ab fix prettyprinting changes that caused the kernel to not link if you 
defined DIAGNOSTIC but not DDB...
 1993-08-07 05:08:11 +00:00
mycroft
a0aed26669 Remove a spurious `#' added two revisions ago. 1993-08-03 01:56:52 +00:00
mycroft
4862b84c92 Add RCS identifiers (this time on the correct side of the branch), and 
incorporate recent changes in netbsd-0-9 branch.
 1993-08-01 19:22:24 +00:00
jtc
3643c134f1 Change "#endif FOO" to "#endif /* FOO */", to keep gcc -Wall, lint, etc. 
from complaining about a trivial issue.
 1993-07-29 21:42:19 +00:00
cgd
7b2afa7fe6 incorporate changes from 0-9-base to 0-9-ALPHA 1993-07-28 02:20:34 +00:00
pk
36a6e635b3 Committing in src/sys/vm 
Modified Files:
	vm_object.c

call vm_object_remove() to remove an object from the hashtable when
vm_object_collapse() starts fiddling with pagers.
 1993-07-28 00:00:01 +00:00
brezak
9d7e246a03 Cleanup pretty printers for maps and objects. 1993-07-22 13:03:36 +00:00
cgd
24e3cbad44 according to andrew, the bit with the comment: 
>       /* protect from the user area from user accesses. :-)
>          addr -> addr + UPAGES*NBPG don't seem to be protected without
>          this; the rest seems to be OK, and doesn't like being protected
>          - andrew@werple.apana.org.au */
*is* necessary, so put it back in...  it's in an #ifdef i386 part anyway.
 1993-07-19 13:47:09 +00:00
andrew
aa381d0e73 vm_protect() of the user area is no longer required for i386 machines; the 
protection is implemented by adjusting the bounds of the user segment
descriptors.
 1993-07-18 08:19:34 +00:00
mycroft
ad087b06a0 Finish moving struct definitions outside of function declarations. 1993-07-17 15:56:59 +00:00
mycroft
97cae397ee Finish moving struct definitions outside of function declarations. 1993-07-17 15:24:33 +00:00
cgd
fd3c8fa35a fix a whole slew of off-by-one errors 1993-07-15 15:42:17 +00:00
cgd
4b90229cd2 do the "right thing" with mmap protections, once and for all. 
in particular, if an object is mapped private, DO NOT grant
VM_PROT_ALL protections to it; it could be sensitive data.
 1993-07-15 14:48:37 +00:00
cgd
b8b3b4471d get rid of any support for vm_fault_wire() returning a result. 
if it's going to be ifdef'd out until it's tested, it shouldn't
be put in to begin with.
also, minor ansifications and cleanups (mostly so tags would be happier).
 1993-07-15 14:25:18 +00:00
cgd
999eb6ce5b get rid of extraneous thread_wakeup()s, added at sef's prompting, 
which would never be called anyway.  leave his vm_page_activate()
change in though, as it is correct.
 1993-07-15 14:07:51 +00:00
cgd
5287574e0a get rid of bogus retrymalloc code (and it was bogus)... 1993-07-15 13:33:23 +00:00
cgd
b99e3b6666 get rid of bogus protections chacking which conflicts w/guido's 
patch...
 1993-07-07 11:25:32 +00:00
cgd
09844fbcfe make the rlist code all go away. replace it with resource map code, 
as written by Wolfgang Solfrank.
 1993-07-07 06:04:12 +00:00
cgd
8ebc845441 got rid of (obviously) bogus assignment which followed free(). 1993-07-02 10:26:49 +00:00
andrew
7a0e26cd13 Paul Kranenburg's VM deadlock patches (from patchkit 00147, parts 3 & 4). 
Prevent dirty objects from being cached, and prevent vm_page_alloc() from
allocating too much memory to non-kernel objects.
 1993-06-30 03:48:25 +00:00
mycroft
5f8b3f4ff4 Oops. Get rid of the `#ifndef MYCROFT_IS_A_DORK'. B-) 1993-06-29 19:38:50 +00:00
mycroft
d94e5eecbb Fix some off-by-one errors. 1993-06-29 13:47:05 +00:00
andrew
5705dde7e9 Disallow access to the user pages, where the kernel stack is stored. This 
is effected in useracc(), and also by a vm_protect() in vm_fork() for i386
CPUs.  Without the latter a write to the user area, say USRSTACK+1000,
would hang a 386-based system.
 1993-06-29 07:16:31 +00:00
andrew
918a434644 ANSIfications. Added support for vm_fault_wire() returning a result; code 
to actually fail is currently disabled, as this would enable some new code
in vm_map_pageable() (disabled in this commit) that hasn't been used to
date.  I'm fairly confident it is all OK, but shall test it some more once
the rest of the kernel is more stable, before enabling it.
 1993-06-27 06:38:48 +00:00
andrew
51ac6a0997 ANSIfications. 1993-06-27 06:27:29 +00:00
cgd
0e761b8d7e fix behavior when VM_MAXUSER_ADDRESS == (-UPAGES * NBPG) 1993-06-21 10:18:20 +00:00
brezak
800afb6fec Remove annonying printf when adding swap. 1993-06-17 16:34:25 +00:00
cgd
1b44fd4c31 fix syntax errors caused by *not* having any one of the pagers... 1993-05-29 17:03:06 +00:00
deraadt
ada4945e6b patches to make kernel malloc() retryable. from <MDICKSON@CSI.compuserve.com> 1993-05-27 14:34:29 +00:00
cgd
cc5e8e00d5 add rcs ids and clean up headers 1993-05-20 03:59:08 +00:00
cgd
3cec79bb72 add counters for vmstat 1993-05-07 07:12:43 +00:00
cgd
db3da84702 add bruce evans's useracc fixes, from patchkit patch 137. 1993-05-07 07:03:50 +00:00
cgd
b235aec4f6 fix free page count determination 1993-05-07 06:59:45 +00:00
cgd
fd7c50fd61 patch from Pete Chown <pc123@cus.cam.ac.uk> to fix mmap 
modes vs. read/write permissions problem.
 1993-05-07 01:58:11 +00:00
cgd
645b67012b make it panic, like i thought it did, for mb_map too small. 1993-04-29 08:57:02 +00:00
mycroft
0b48d59355 Fix utter inanity I committed last night. 1993-04-29 00:46:21 +00:00
mycroft
a203e5704b Implement previous change more cleanly. 1993-04-28 04:00:49 +00:00
mycroft
87dc98f60b Introduce a new panic() condition in case I missed something. 1993-04-28 03:04:57 +00:00
mycroft
95090f0a13 Don't use first block of swap area. 1993-04-28 03:04:25 +00:00
mycroft
235bd1db44 Add consistent multiple-inclusion protection. 1993-04-19 03:45:34 +00:00
glass
33d009a09c Prevents you from creating double faults and such mmaping stuff on top 
of the kernel, etc. Tested.  Derived from BSDI public patches
 1993-04-10 15:06:01 +00:00
cgd
4493ba8058 fixed stupid typo (missing comma) in hand-applied diff 1993-04-09 17:19:02 +00:00
cgd
a128c34f9c From: Guido van Rooij <guido@gvr.win.tue.nl> 
when mmapping a file, permissions are checked as it should be. When
mprotect()-ing the address range afterwards, no protection was checked
regarding the protection of the file originally opened. So
when you open /usr/bin/su RDONLY and SHARED you could afterwards change
the mmapped region to READ|WRITE. This gave the possibility to obtain
root privs obviously.
 1993-04-09 17:16:30 +00:00
cgd
202313150e changes, running on sef's machine to good effect, likely contributed 
by torek.  (sef told me to get them, and their origin...)
 1993-04-09 17:13:17 +00:00
cgd
827c75471f From: andrew@werple.apana.org.au (Andrew Herbert) 
Here are some fixes I derived from the mach 3.0 VM system a couple of months
ago.  At the time, I was giving the memory object routines a good looking
at, trying to fix the long-standing problem where vm_object_collapse()
sometimes fails to collapse objects left over from the exit of a forked
child.  As bde has noted, the problem seems to occur when portions of the
parent are paged out.  These "lost" memory objects, which can eat up a huge
amount of swap space, are reclaimed when the parent responsible for the
fork()s is killed.
 1993-04-09 16:53:46 +00:00
cgd
3cac22992d from sean eric fagan: 
it seems to keep the vm system from deadlocking the system when it runs
out of swap + physical memory.
prevents the system from giving the last page(s) to anything but the
referenced "processes" (especially important is the pager process,
which should never have to wait for a free page).
 1993-04-09 15:54:56 +00:00
cgd
64354bb7c6 broke out panics for *_map too small, and tried to coalesce the maps more 
often.
 1993-03-31 21:53:56 +00:00
cgd
e541169ce2 after 0.2.2 "stable" patches applied 1993-03-21 18:04:42 +00:00
cgd
61f282557f initial import of 386bsd-0.1 sources 1993-03-21 09:45:37 +00:00