A new hypercall is added to tell hypervisor: caching attribute of some memory ranges in guest can''t be changed by guest itself. Currently the usage scenario is for VRAM, because VRAM is shared between qemu-dm and domU if no VGA device is assigned to domU. Signed-off-by: Disheng Su <disheng.su@intel.com> Best Regards, Disheng, Su _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel