Xen users - Nov 2014 - HOWTO use mjt-set-oem-in-rsdt-like-slic patch in QEMU 2.1

Hi,

When I googled how to put Windows OEM SLIC in Xen HVM guest, I found
this QEMU patch :-

  * mjt-set-oem-in-rsdt-like-slic.diff: apply a (hackish) patch to simplify
    running OEM versions of windows vista and 7 in qemu using SLIC table
    from current hardware.

I hope someone could point me how to use the hackish patch, such that
the OEM SLIC table from current hardware is available in Xen HVM
guest.

Thanks a lot.

John Mok