basic MTRR/PAT virtualization. The basic idea is listed below: The guest page attribute is virtualized through shadow page attribute. First, get the effective guest page attribute, by calculating from the combination of guest MTRR/PAT. Then the shadow page attribute is calculated from effective guest page attribute and host MTRR. If conflict occurs(e.g effective guest page attribute is WB, host MTRR of this range is UC, can''t set this page attribute as guest required), set this range as UC. Some lookup tables are added to accelerate above procedure. 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