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From: Nishanth Aravamudan <nacc@linux.vnet.ibm.com>
To: Christoph Lameter <cl@linux.com>
Cc: linux-mm@kvack.org, linuxppc-dev@lists.ozlabs.org,
	anton@samba.org, rientjes@google.com
Subject: Re: Node 0 not necessary for powerpc?
Date: Thu, 13 Mar 2014 09:49:50 -0700	[thread overview]
Message-ID: <20140313164949.GC22247@linux.vnet.ibm.com> (raw)
In-Reply-To: <alpine.DEB.2.10.1403120839110.6865@nuc>

On 12.03.2014 [08:41:40 -0500], Christoph Lameter wrote:
> On Tue, 11 Mar 2014, Nishanth Aravamudan wrote:
> > I have a P7 system that has no node0, but a node0 shows up in numactl
> > --hardware, which has no cpus and no memory (and no PCI devices):
> 
> Well as you see from the code there has been so far the assumption that
> node 0 has memory. I have never run a machine that has no node 0 memory.

Do you mean beyond the initialization? I didn't see anything obvious so
far in the code itself that assumes a given node has memory (in the
sense of the nid). What are your thoughts about how best to support
this?

Thanks,
Nish

WARNING: multiple messages have this Message-ID (diff)
From: Nishanth Aravamudan <nacc@linux.vnet.ibm.com>
To: Christoph Lameter <cl@linux.com>
Cc: linux-mm@kvack.org, linuxppc-dev@lists.ozlabs.org,
	anton@samba.org, rientjes@google.com, benh@kernel.crashing.org
Subject: Re: Node 0 not necessary for powerpc?
Date: Thu, 13 Mar 2014 09:49:50 -0700	[thread overview]
Message-ID: <20140313164949.GC22247@linux.vnet.ibm.com> (raw)
In-Reply-To: <alpine.DEB.2.10.1403120839110.6865@nuc>

On 12.03.2014 [08:41:40 -0500], Christoph Lameter wrote:
> On Tue, 11 Mar 2014, Nishanth Aravamudan wrote:
> > I have a P7 system that has no node0, but a node0 shows up in numactl
> > --hardware, which has no cpus and no memory (and no PCI devices):
> 
> Well as you see from the code there has been so far the assumption that
> node 0 has memory. I have never run a machine that has no node 0 memory.

Do you mean beyond the initialization? I didn't see anything obvious so
far in the code itself that assumes a given node has memory (in the
sense of the nid). What are your thoughts about how best to support
this?

Thanks,
Nish

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  reply	other threads:[~2014-03-13 16:50 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-03-11 19:56 Node 0 not necessary for powerpc? Nishanth Aravamudan
2014-03-11 19:56 ` Nishanth Aravamudan
2014-03-12  2:02 ` David Rientjes
2014-03-12  2:02   ` David Rientjes
2014-03-13 16:48   ` Nishanth Aravamudan
2014-03-13 16:48     ` Nishanth Aravamudan
2014-03-12 13:41 ` Christoph Lameter
2014-03-12 13:41   ` Christoph Lameter
2014-03-13 16:49   ` Nishanth Aravamudan [this message]
2014-03-13 16:49     ` Nishanth Aravamudan
2014-05-19 18:24     ` Nishanth Aravamudan
2014-05-19 18:24       ` Nishanth Aravamudan
2014-05-21 14:16       ` Christoph Lameter
2014-05-21 14:16         ` Christoph Lameter
2014-05-21 18:58         ` Tejun Heo
2014-05-21 18:58           ` Tejun Heo
2014-05-21 19:57           ` Nishanth Aravamudan
2014-05-21 19:57             ` Nishanth Aravamudan
2014-06-09 21:47             ` David Rientjes
2014-06-09 21:47               ` David Rientjes
2014-06-10 23:31               ` Nishanth Aravamudan
2014-06-10 23:31                 ` Nishanth Aravamudan
2014-06-19 14:59                 ` Tejun Heo
2014-06-19 14:59                   ` Tejun Heo
2014-06-19 17:40                   ` Nishanth Aravamudan
2014-06-19 17:40                     ` Nishanth Aravamudan
2014-06-19 17:14           ` Nishanth Aravamudan
2014-06-19 17:14             ` Nishanth Aravamudan

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