Commit Graph

7 Commits

Author SHA1 Message Date
thorpej 1946167939 Update for pmap_enter() API change. No functional difference. 1999-11-13 00:30:26 +00:00
mycroft e84fe91c51 Take advantage of the new `access_type' for pmap_enter(), and always do R/M
emulation of managed pages.  This required the following `interesting' changes:
* File system buffers must be entered with an access type of
  VM_PROT_READ|VM_PROT_WRITE, so that the pages will be accessible immediately.
  Otherwise we would have to teach pagemove() to update the R/M information.
  Since they're never eligible for paging, the latter is overkill.
* We must insure that pages allocated before the pmap is completely set up
  (that is, pages allocated early by the VM system) are not eligible for R/M
  emulation, since the memory needed for this isn't available.  We do this by
  allocating the pmap's internal memory with uvm_pageboot_alloc().  This also
  fixes an absolutely horrible hack where the pmap only worked because page 0
  happened to be mapped.
  to be mapped.
Also:
* Push the wired page counting into the p->v list maintenance functions.  This
  avoids code duplication, and fixes some cases where we were confused about
  which pages to do it with.
* Fix lots of problems associated with pmap_nightmare() (and rename it to
  pmap_vac_me_harder()).
* Since the early pages are no longer considered `managed', just make
  pmap_*_pv() panic if !pmap_initialized.
1999-03-26 22:00:24 +00:00
mrg db3051d720 fix problems in many d_mmap routines:
- returned EOPNOTSUPP rather than -1.
	- no check for negative offset.
many of these fix potential security problems in these drivers.


XXX XXX XXX
the d_mmap cdev routine should be changed to have a prototype like:
	paddr_t (*d_mmap) __P((dev_t, off_t, int));

by someone!
1998-11-19 15:38:20 +00:00
mark 2194175b24 KNF. 1998-07-07 00:48:11 +00:00
cgd dd0142f10f add NetBSD RCS IDs and delete other RCS keywords, per the standard style. 1998-05-01 21:18:39 +00:00
cgd 5317573641 adapt to OFW code changes 1998-05-01 21:13:53 +00:00
cgd 72797e4632 Import sys/arch/arm32/{shark,ofw} bits of the Digital Network Appliance
Reference Design NetBSD source code, obtained from the pages under
http://www.research.digital.com/SRC/iag .  Some of this code (badly)
needs to be cleaned up, and as-is it doesn't compile.  However, getting
it in the tree is a start.
1998-05-01 21:08:55 +00:00