I repulled/rebuilding the tip tree this morning. I can confirm that the show_msr patch is working and mtrr masking patch is now only printing a single warning in the dmesg. The dmesg is attached. As per usual, the kernel folks provide the best support of any software in history. Thanks guys! -J -- On Fri, Aug 22, 2008 at 05:56:09AM +0200, Ingo Molnar wrote: > > * Ingo Molnar wrote: > > > i've tidied up your patch (see the commit below) and have queued it up > > in x86/urgent. It seems fairly safe and i guess we can push it to > > v2.6.27 if Joshua reports test success. Joshua, could you give it a go > > please? > > or just try the latest tip/master - please check whether you are getting > the right amount of RAM out of box plus this warning message: > > > WARN_ON("mtrr: your BIOS has set up an incorrect mask, fixing it up.\n"); > > Ingo