[Xen-devel] [PATCH v8 00/13] x86/hvm: I/O emulation cleanup and fix

[Paul Durrant <paul.durrant@xxxxxxxxxx>]

This patch series re-works much of the code involved in emulation of port
and memory mapped I/O for HVM guests.

The code has become very convoluted and, at least by inspection, certain
emulations will apparently malfunction.

The series is broken down into 13 patches (which are also available in
my xenbits repo: http://xenbits.xen.org/gitweb/?p=people/pauldu/xen.git
on the emulation36 branch).

Previous changelog
------------------

v4:
 - Removed previous patch (make sure translated MMIO reads or
   writes fall within a page) and rebased rest of series.
 - Address Jan's comments on patch #1

v3:
 - Addressed comments from Jan
 - Re-ordered series to bring a couple of more trivial patches to the
   front
 - Backport to XenServer (4.5) now passing automated tests
 - Tested on unstable with QEMU upstream and trad, with and without
   HAP (to force shadow emulation)

v2:
 - Removed bogus assertion from patch #15
 - Re-worked patch #17 after basic testing of back-port onto XenServer

Subsequent changes are logged in the individual patch files (thanks
to David Vrabel for that).

Testing
-------

v6 of the series was been back-ported to staging-4.5 and then dropped
onto the XenServer (Dundee) patch queue. All automated branch-safety tests
pass.

v8 has just been compile tested since changes since v6 are largely
cosmetic. It will be back-ported in the near future.

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