Commit Graph

18 Commits

Author SHA1 Message Date
chs aeda8d3b77 Initial integration of the Unified Buffer Cache project. 2000-11-27 08:39:39 +00:00
thorpej b5b82faa4a uvm_map_setup(): We almost ever set up an interrupt-safe map, but we
set up quite a few regular ones (at every fork!), so put interrupt-
safe map setup in the slow path with a __predict_false().

uvm_map_reference(): __predict_false() the check for NULL map.
uvm_map_deallocate(): Likewise.
2000-05-08 22:59:35 +00:00
thorpej 11c67d01a5 Fix a corner case locking error, which could lead to map corruption in
SMP environments.  See comments in <vm/vm_map.h> for details.
1999-07-01 20:07:05 +00:00
thorpej 45e5ec934e Use a more descriptive wait message for VM map locks. 1999-06-14 22:05:23 +00:00
thorpej 2c3dc83a64 Keep interrupt-safe maps on an additional queue. In uvm_fault(), if we're
looking up a kernel address, check to see if the address is on this
"interrupt-safe" list.  If so, return failure immediately.  This prevents
a locking screw if a page fault is taken on an interrupt-safe map in or
out of interrupt context.
1999-06-04 23:38:41 +00:00
thorpej 2580d306ab Change the vm_map's "entries_pageable" member to a r/o flags member, which
has PAGEABLE and INTRSAFE flags.  PAGEABLE now really means "pageable",
not "allocate vm_map_entry's from non-static pool", so update all map
creations to reflect that.  INTRSAFE maps are maps that are used in
interrupt context (e.g. kmem_map, mb_map), and thus use the static
map entry pool (XXX as does kernel_map, for now).  This will eventually
change now these maps are locked, as well.
1999-05-26 19:16:28 +00:00
mrg c2f7cb3c4e remove now-wrong comment. formatting nit. 1999-05-03 08:53:24 +00:00
mrg a0139bc39d remove now >1 year old pre-release message. 1999-03-25 18:48:49 +00:00
chuck 2d4c15ebc9 remove unused share map code from UVM:
- replace map checks with submap checks
 - get rid of unused 'mainonly' arg in uvm_unmap/uvm_unmap_remove, simplify
	code.   update all calls to reflect this.
 - don't worry about unmapping or changing the protection of shared share
	map mappings (is_main_map no longer used).
 - remove unused uvm_map_sharemapcopy() function from fork code.
1998-10-11 23:14:47 +00:00
thorpej d865961d77 Back out previous; I should have instrumented the benefit of this one
first.
1998-08-31 01:54:14 +00:00
thorpej 7338d4e403 Use the pool allocator and the "nointr" pool page allocator for vm_map's. 1998-08-31 01:50:08 +00:00
eeh a2dd74ed79 Merge paddr_t changes into the main branch. 1998-08-13 02:10:37 +00:00
mrg 8106d13596 KNF. 1998-03-09 00:58:55 +00:00
mrg d90485202c - add defopt's for UVM, UVMHIST and PMAP_NEW.
- remove unnecessary UVMHIST_DECL's.
1998-02-10 14:08:44 +00:00
perry 021fdb646a add/cleanup multiple inclusion protection. 1998-02-10 02:34:17 +00:00
mrg 1f6b921cf7 restore rcsids 1998-02-07 11:07:38 +00:00
thorpej 9eb328b495 RCS ID police. 1998-02-06 22:26:13 +00:00
mrg f2caacc717 initial import of the new virtual memory system, UVM, into -current.
UVM was written by chuck cranor <chuck@maria.wustl.edu>, with some
minor portions derived from the old Mach code.  i provided some help
getting swap and paging working, and other bug fixes/ideas.  chuck
silvers <chuq@chuq.com> also provided some other fixes.

this is the UVM kernel code portion.


this will be KNF'd shortly.  :-)
1998-02-05 06:25:08 +00:00