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

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Message-ID: <560AD654.1060401@linux.vnet.ibm.com>
Date:	Tue, 29 Sep 2015 23:50:04 +0530
From:	Raghavendra K T <raghavendra.kt@...ux.vnet.ibm.com>
To:	Nishanth Aravamudan <nacc@...ux.vnet.ibm.com>,
	Denis Kirjanov <kda@...ux-powerpc.org>
CC:	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 09/28/2015 10:34 PM, Nishanth Aravamudan wrote:
> 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 :(

Hi Denis,
Thanks for your interest. I have pushed the patches to

https://github.com/ktraghavendra/linux/tree/serialnuma_v1 if it makes
  patches easy to grab.

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

Thanks Nish, I 'll also grab a powerVM and test.




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