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

[Roger Pau Monnà <roger.pau@xxxxxxxxxx>]

Hello,

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.

Roger.

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
http://lists.xen.org/xen-devel