On Fri, Sep 28, 2012 at 08:56:50AM +0100, Jan Beulich wrote: > >>> On 27.09.12 at 20:06, Daniel Kiper <daniel.ki...@oracle.com> wrote: > > Some implementations (e.g. Xen PVOPS) could not use part of identity page > > table to construct transition page table. It means that they require > > separate > > PUDs, PMDs and PTEs for virtual and physical (identity) mapping. To satisfy > > that > > requirement add extra pointer to PGD, PUD, PMD and PTE and align existing > > code. > > I'm puzzled by this - why would you need to reintroduce what had > been dropped a long time ago, when the forward ported kernels > don't need it? Xen itself doesn't need the extra entries, their > presence is purely a requirement of the specific kernel > implementation afaict.
Hmmm... I will try to optimize that a bit. Daniel -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
