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...e installed XEN according to this tutorial: <http://www.howtoforge.com/paravirtualization-with-xen-on-centos-5.4-x86_64> http://www.howtoforge.com/paravirtualization-with-xen-on-centos-5.4-x86_64 on the first XEN boot, it freezes for a very long time on: allocating pci resources starting at a8000000 (gap: a0000000:5ec00000) (the centos installation works fine) I then realized that this is caused when I set the BIOS to use Virtualization. (when I disable it, XEN boots up nicely). I have: <http://ark.intel.com/Product.aspx?id=27236> http://ark.intel.com/Product.aspx?id=27236 so I c...

...rev 02) (prog-if 00 [Normal decode]) Flags: bus master, 66MHz, fast devsel, latency 48 Bus: primary=00, secondary=02, subordinate=02, sec-latency=0 I/O behind bridge: 00002000-00002fff Memory behind bridge: d0100000-d01fffff Prefetchable memory behind bridge: a8000000-a80fffff 00:1c.0 PCI bridge: Intel Corporation 6300ESB 64-bit PCI-X Bridge (rev 02) (prog-if 00 [Normal decode]) Flags: bus master, 66MHz, fast devsel, latency 48 Bus: primary=00, secondary=03, subordinate=03, sec-latency=48 I/O behind bridge: 00003000-00003fff Memo...

I just built 4.3.0 in order to get > 2GB of RAM in domU with GPU passthrough without crashes. Unfortunately, the same crashes still happen. Massive frame buffer corruption on domU before it locks up solid. It seems the PCI memory stomp is still happening. I am using qemu-dm, as I did on Xen 4.2.x. So whatever fix for this went into 4.3.0 didn''t fix it for me. Passing less than 2GB