linux-kernel - Re: [PATCH v3] of: Create asm-generic/of.h and provide default of_node_to

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Date:	Mon, 26 Jul 2010 18:38:08 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	grant.likely@...retlab.ca
Cc:	sam@...nborg.org, sfr@...b.auug.org.au, monstr@...str.eu,
	microblaze-uclinux@...e.uq.edu.au,
	devicetree-discuss@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
	linuxppc-dev@...abs.org, benh@...nel.crashing.org,
	sparclinux@...r.kernel.org
Subject: Re: [PATCH v3] of: Create asm-generic/of.h and provide default
 of_node_to_nid()

From: Grant Likely <grant.likely@...retlab.ca>
Date: Mon, 26 Jul 2010 16:51:01 -0600

> Indeed.  I looked at it briefly, but it wasn't immediately clear what
> the impact would be to switch powerpc over to -1, and it looked to me
> like sparc depends on -1 to signify no node association.

Kernel wide, NUMA interfaces tend to take "-1" to mean "any node."

I had looked over the powerpc cases, and besides 1 or 2 strange
locations the powerpc call sites were ready to handle -1.
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