Re: [PATCH 1/2] clean up for early_pfn_to_nid

[David Miller <davem@davemloft.net>]

From: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Date: Mon, 16 Feb 2009 09:50:42 +0900

> On Fri, 13 Feb 2009 22:12:26 -0800 (PST)
> David Miller <davem@davemloft.net> wrote:
> 
> > From: Andrew Morton <akpm@linux-foundation.org>
> > Date: Fri, 13 Feb 2009 14:20:32 -0800
> > 
> > > I queued these as
> > > 
> > > mm-clean-up-for-early_pfn_to_nid.patch
> > > mm-fix-memmap-init-for-handling-memory-hole.patch
> > > 
> > > and tagged them as needed-in-2.6.28.x.  I don't recall whether they are
> > > needed in earlier -stable releases?
> > 
> > Every kernel going back to at least 2.6.24 has this bug.  It's likely
> > been around even longer, I didn't bother checking.
> > 
> 
> Sparc64's one is broken from this commit.
> 
> 09337f501ebdd224cd69df6d168a5c4fe75d86fa
> sparc64: Kill CONFIG_SPARC32_COMPAT
> 
> CONFIG_NODES_SPAN_OTEHR_NODES is set and config allows following kind of NUMA
> This is requirements from powerpc.

Well, actually this means that what broke sparc64 was the addition of
NUMA support then.  Users could and were enabling these options
on sparc64 beforehand, I just updated defconfig to reflect the
fact that my workstation was NUMA capable :)

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