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[Xen-devel] (no subject)

This series aims to prevent the display from freezing when
enabling altp2m and switching to a new view (and assorted problems
when resizing the display).

The first patch introduces p2m_{init,free}_logdirty(), the second
allocates  a new logdirty rangeset for each new altp2m, and the
fourth propagates (under lock) changes to all p2ms.

Since the last version of the series, what has previously been
the first patch is already upstream, and two patches kindly
authored by George Dunlap have been appended. The patches
optimize the way rangeset changes are propagated in

[PATCH V7 1/5] x86/mm: introduce p2m_{init,free}_logdirty()
[PATCH V7 2/5] x86/mm: allocate logdirty_ranges for altp2ms
[PATCH V7 3/5] x86/altp2m: fix display frozen when switching to a new view early
[PATCH V7 4/5] p2m: Always use hostp2m when clipping rangesets
[PATCH V7 5/5] p2m: change_range_type: Only invalidate mapped gfns


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