Commit Graph

5 Commits

Author SHA1 Message Date
Kevin Lawton
c15abe90f2 Updated host-null (a stubs-only compilation test) to reflect
a few new callout functions.
2003-01-09 04:49:04 +00:00
Kevin Lawton
90a0749716 Unified the routines to retrieve physical page addresses underlying
a region of virtual memory.  Now the same one works for getting
  the pages of the kernel driver and memory objects allocated via
  vmalloc().
Converted to using Linux interfaces to walk the page tables to
  get at the physical memory addresses above.  The old code was
  digging up this info starting with looking at CR3.  Linux has
  functions/macros to do this, which can handle 2/3-level cases.
Wrapped the page table walk with proper locks.  A spin lock
  for new Linuxes, a big kernel lock for old ones.
2003-01-04 01:21:18 +00:00
Kevin Lawton
d4a8cf56d6 Cleaned up host-linux.c.
Moved more logic into monitor-host, which is host neutral.
2003-01-03 20:02:54 +00:00
Kevin Lawton
28c0100e7d Some cleanup. 2003-01-02 02:11:40 +00:00
Kevin Lawton
0768d01522 Added plex86 directory to bochs. This directory contains the
new experimental stripped-down version of plex86, which is now
  a user-code-only VM.  I ripped out all the fancy stuff in plex86,
  such that under that right conditions, user-code (protection level 3)
  can run at near native speeds inside the plex86 VM.
The general idea is that bochs emulates all the initial real-mode code,
  and guest kernel code (protection level 0).  When it senses the
  right conditions (like the context switches to user-code), a shim
  is called to execute the guest inside the plex86 VM.  All guest-generated
  faults/exceptions are then forwarded back to bochs to be handled in
  the emulator.
Actually, I'm not yet adding the mods to the bochs code (other than
  the shim code which is in a separate file), until I hear that we're
  back in a more development mode with bochs after the 2.0 release.
The plex86 subdirectory is really a separate project.  It's just more
  convenient to co-develop it with bochs for now.  Both projects are
  currently LGPL, but each should be taken to be a separate project,
  and have their own license file.  Plex86 (it's only a kernel driver
  now) could ultimately be used with other projects, as it's modular.
  I talked with Bryce, and we both agreed it's OK to keep plex86 as
  a subdir in bochs for now.
2003-01-01 17:32:06 +00:00