[MODERATED] Re: [PATCH 1/6] Patch 1

[Andi Kleen <ak@linux.intel.com>]

> That, in turn, means that if you have a desktop chip with only 40 bits of 
> physical addressing, now that the offset starts at bit 9, you still have 
> to have 30 bits of offset actually *in use* until bit 39 ends up being 
> clear.

Here are the cases for modern Intel CPUs:

    Nehalem Client                                  39      >=0.25TB
    Nehalem Server                                  44      >=8TB
    SandyBridge/IvyBridge/Haswell/Broadwell/Skylake 46      >=32TB

In general anything newer has 46 bits

> Anybody willing to test and/or double-check my math/logic?

I did some tests and it works and seems to do the right thing. I'll
use this patch in the next version of the patchkit. Thanks.

-Andi