Xen Kernel Patch to enable MSR writes

Patch: Attached to this page is our patch for Xen-3.1.0 that enables user-space msr writes for changing CPU power states. Steps: (1) Download the Xen source here: http://bits.xensource.com/oss-xen/release/3.1.0/src.tgz/xen-3.1.0-src.tgz (2) Extract the source: tar -xzf xen-3.1.0-src.tgz (3) cd xen-3.1.0-src (4) Copy patch (dvfs-msr-patch.txt) into this directory (4) patch –dry-run -p1 < dvfs-msr-patch.txt (5) patch -p1 < dvfs-msr-patch.txt (6) make world Compilation might prompt asking how to include the msr package. Answer ‘m’ for module (7) make install (as root)