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[Xen-devel] [RFC v2 0/5] HPET fix interrupt logic

With the earlier patches now committed, this series is much shorter.

I have split as many changes as I think I can unpick from the main functional
change.  These now live in patches 1 and 3.  Some of the changes pulled
forwards into patch 1 make a sup prising improvement to the clarity of patch 2.

Patch 2 is the main functional change, which completely reimplements how HPET
interrupts work, how ownership works, and how waking works.  It is RFC, and is
currently tested as "Doesn't blow up when used".  This includes more modern
systems as well, using the "no-arat" command line parameter to cause Xen to
use this codepath.

Patches 4 and 5 are debugging, and possibly for inclusion if deemed useful.

Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
CC: Keir Fraser <keir@xxxxxxx>
CC: Jan Beulich <JBeulich@xxxxxxxx>
CC: Tim Deegan <tim@xxxxxxx>


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