linux-kernel - Re: [PATCH RFC 0/5] powerpc:numa Add serial nid support

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Message-ID: <20150928170455.GA48470@linux.vnet.ibm.com>
Date:	Mon, 28 Sep 2015 10:04:55 -0700
From:	Nishanth Aravamudan <nacc@...ux.vnet.ibm.com>
To:	Denis Kirjanov <kda@...ux-powerpc.org>
Cc:	Raghavendra K T <raghavendra.kt@...ux.vnet.ibm.com>,
	benh@...nel.crashing.org, paulus@...ba.org, mpe@...erman.id.au,
	nikunj@...ux.vnet.ibm.com, linux-kernel@...r.kernel.org,
	anton@...ba.org, grant.likely@...aro.org, cl@...ux.com,
	khandual@...ux.vnet.ibm.com, linuxppc-dev@...ts.ozlabs.org,
	gkurz@...ux.vnet.ibm.com
Subject: Re: [PATCH RFC 0/5] powerpc:numa Add serial nid support

On 28.09.2015 [13:44:42 +0300], Denis Kirjanov wrote:
> On 9/27/15, Raghavendra K T <raghavendra.kt@...ux.vnet.ibm.com> wrote:
> > Problem description:
> > Powerpc has sparse node numbering, i.e. on a 4 node system nodes are
> > numbered (possibly) as 0,1,16,17. At a lower level, we map the chipid
> > got from device tree is naturally mapped (directly) to nid.
> 
> Interesting thing to play with, I'll try to test it on my POWER7 box,
> but it doesn't have the OPAL layer :(

Note that it's also interesting to try it under PowerVM, with odd NUMA
topologies and report any issues found :)


-Nish

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