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[Xen-devel] Removing the PVH assert in arch/x86/hvm/io.c:87


I've just stumbled upon this assert while testing PVH on different
hardware. It was added in 7c4870 as a safe belt, but it turns out INS
and OUTS go through handle_mmio. So using this instructions from a PVH
guest basically kills Xen.

I've removed it and everything seems fine, so I'm considering sending a
patch for 4.5 in order to have it removed. I think the path that could
trigger the crash because of the missing vioapic stuff is already
guarded by the other chunk added in the same patch.


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