[Xen-devel] [PATCH 0/4] arm: per-PCPU pagetables

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

Sengul Thomas observed that Xen was updating the domheap mappings
without a lock and that this caused problems on SMP systems.

The underlying problem here is that the domheap mappings are supposed to
be per-PCPU but were not, instead all PCPUs are currently sharing the
same pagetables and therefore using the same mappings.

Implement per-PCPU page tables and give each PCPU its own domheap
mapping pages.

Sengul, thanks for your bugreport, I wonder if you could test this
series?

WRT the Freeze this change represents a bug fix not a feature...

Ian.


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