Re: [PATCH 0/7] Sparsemem Virtual Memmap V5

KAMEZAWA Hiroyuki
2007-07-13T23:27:36Z

On Fri, 13 Jul 2007 15:54:25 -0700 (PDT)
Christoph Lameter <clameter@sgi.com> wrote:

> On Fri, 13 Jul 2007, Luck, Tony wrote:
>
> > > How many tests were done and on what platform?
> >
> > Andy's part 0/7 post starts off with the performance numbers. He
> > didn't say which ia64 platform was used for the tests.
> >
> > Looking my logs for the last few kernel builds (some built on a
> > tiger_defconfig kernel which uses CONFIG_VIRTUAL_MEM_MAP=y, and
> > some with the new CONFIG_SPARSEMEM_VMEMMAP) I'd have a tough time
> > saying whether there was a regression or not).
>
> I'd be very surprised if there is any difference because the IA64 code for
> virtual memmap is the source of ideas and implementation for SPARSE_VIRTUAL.
>
Maybe pfn_valid() implementation is different from ?

Thanks,
-Kame