Commit Graph

7 Commits

Author SHA1 Message Date
Alfred Perlstein
e41ed5da90 Remove __P.
Reviewd by: peter
2002-03-20 23:30:31 +00:00
Doug Rabson
3fc4a53e7a * Make sure we increment pm_stats.resident_count in pmap_enter_quick
* Re-organise RID allocation so that we don't accidentally give a RID
  to two different processes. Also randomise the order to try to reduce
  collisions in VHPT and TLB. Don't allocate RIDs for regions which are
  unused.
* Allocate space for VHPT based on the size of physical memory. More
  tuning is needed here.
* Add sysctl instrumentation for VHPT - see sysctl vm.stats.vhpt
* Fix a bug in pmap_prefault() which prevented it from actually adding
  pages to the pmap.
* Remove ancient dead debugging code.
* Add DDB commands for examining translation registers and region
  registers.

The first change fixes the 'free/cache page %p was dirty' panic which I
have been seeing when the system is put under moderate load. It also
fixes the negative RSS values in ps which have been confusing me for a
while.

With this set of changes the ia64 port is reliable enough to build its
own kernels, even with a 20-way parallel build. Next stop buildworld.
2001-11-09 13:25:14 +00:00
Doug Rabson
5577bd2bca Rework pmap so that it separates the PTE structure from the pv_entry
structure. This makes it possible to pre-allocate PTEs for the kernel,
which is necessary for a reliable implementation of pmap_kenter(). This
also avoids wasting space (about 48 bytes per page) for kernel mappings
and user mappings of memory-mapped devices.

This also fixes a bug with the previous version where the implementation
required the pv_entry structure to be physically contiguous but did not
enforce this (the structure size was not a power of two). This meant
that the pv_entry free list was quickly corrupted as soon as the system
was even mildly loaded.
2001-10-19 09:47:02 +00:00
Doug Rabson
9a6f25fd59 Add pmap_unmapdev(). 2001-09-29 11:02:06 +00:00
Doug Rabson
378482865e Factor out PTE and related definitions from pmap.h - they are useful in
the loader.
2001-09-24 19:27:38 +00:00
Doug Rabson
ec502c357d * Add rudimentary DDB support (no kgdb, no backtrace, no single step).
* Track recent changes to SWI code.
* Allocate RIDs for pmaps (untested).
* Implement assembler version of cpu_switch - its cleaner that way.
2000-10-10 14:57:10 +00:00
Doug Rabson
1ebcad5720 This is the first snapshot of the FreeBSD/ia64 kernel. This kernel will
not work on any real hardware (or fully work on any simulator). Much more
needs to happen before this is actually functional but its nice to see
the FreeBSD copyright message appear in the ia64 simulator.
2000-09-29 13:46:07 +00:00