Commit Graph

21 Commits

Author SHA1 Message Date
thorpej 6885fbe3d1 Teeny bit of style policing. 1999-07-08 01:02:44 +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
thorpej 00a1f75cf6 In uvm_pagermapin(), pass VM_PROT_READ|VM_PROT_WRITE as access_type, to
ensure we don't take mod/ref emulation faults in an interrupt context
(e.g. during the i/o operation).  This is safe because:
	- For a pageout operation, the page is already known to be
	  modified, and the pagedaemon will pmap_clear_modify() after
	  the pageout has completed.
	- For a pagein operation, pagers must already pmap_clear_modify()
	  after the pagein operation is complete, because the i/o may have
	  been done with e.g. programmed i/o.
XXX It would be nice to know the i/o direction so that we can call
XXX pmap_enter() with only the protection and access_type necessary.
1999-05-26 06:42:57 +00:00
thorpej 9b731fd45c Remove a comment in uvm_pager_dropcluster() about PMAP_NEW and mod/ref
attributes for the page; it no longer applies, since we don't use
pmap_kenter_pgs() anymore.
1999-05-24 23:36:23 +00:00
thorpej 7becac6b9a Don't use pmap_kenter_pgs() for entering pager_map mappings. The pages
are still owned by the object which is paging, and so the test for a kernel
object in uvm_unmap_remove() will cause pmap_remove() to be used instead
of pmap_kremove().

This was a MAJOR source of pmap_remove() vs pmap_kremove() inconsistency
(which caused the busted kernel pmap statistics, and a cause of much
locking hair on MP systems).
1999-05-24 23:30:44 +00:00
mycroft 31a2536cd0 Add a new `access type' argument to pmap_enter(). This indicates what type of
memory access a mapping was caused by.  This is passed through from uvm_fault()
and udv_fault(), and in most other cases is 0.
The pmap module may use this to preset R/M information.  On MMUs which require
R/M emulation, the implementation may preset the bits and avoid taking another
fault.  On MMUs which keep R/M information in hardware, the implementation may
preset its cached bits to speed up the next call to pmap_is_modified() or
pmap_is_referenced().
1999-03-26 21:58:39 +00:00
mrg a0139bc39d remove now >1 year old pre-release message. 1999-03-25 18:48:49 +00:00
chs 0c2374e586 fix a precedence problem in uvm_mk_pcluster() which prevented
clustering of vnode pageouts.  this probably makes no difference
since most apps don't write via the pagecache anyway... yet.
1999-01-22 08:00:35 +00:00
chs 28411139b3 be consistent with locking of amaps and anons when freeing them. 1998-11-04 07:07:22 +00:00
chs 549cd579e5 shift by PAGE_SHIFT instead of multiplying or dividing by PAGE_SIZE. 1998-10-18 23:49:59 +00:00
chuck 025ae6bd64 remove unused share map code from UVM:
- update calls to uvm_unmap_remove/uvm_unmap (mainonly boolean arg
	has been removed)
 - replace UVM_ET_ISMAP checks with UVM_ET_ISSUBMAP checks
1998-10-11 23:18:20 +00:00
thorpej 694e9583aa Make sure the aobj_pager gets initialized! 1998-08-31 00:03:02 +00:00
eeh a2dd74ed79 Merge paddr_t changes into the main branch. 1998-08-13 02:10:37 +00:00
kleink 182e12f413 Remove inclusions of syscall (and syscall argument) related header files;
we don't need them here.
1998-05-05 20:51:04 +00:00
chuck 617118bccc fix released pg bugs detected by Chuck S.:
- release the correct page (ppsp[lcv], not pg)
 - don't access the page's fields after we have released it
 - in the uvm_objct case: move on to the next page if we've released
[should have been merged in on 1998/02/12, but we somehow missed it]
1998-03-22 16:10:29 +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
thorpej 1305ecbe62 Allow callers of uvm_km_suballoc() to specify where the base of the
submap _must_ begin, by adding a "fixed" boolean argument.
1998-02-08 06:15:53 +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