linux-kernel - Re: [PATCH 3/8] Add all memory via sysfs probe interface at once

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Message-ID: <51FC04C2.70100@linux.vnet.ibm.com>
Date:	Fri, 02 Aug 2013 14:13:06 -0500
From:	Nathan Fontenot <nfont@...ux.vnet.ibm.com>
To:	Michael Ellerman <michael@...erman.id.au>
CC:	linux-mm <linux-mm@...ck.org>, isimatu.yasuaki@...fujitsu.com,
	linuxppc-dev@...ts.ozlabs.org, LKML <linux-kernel@...r.kernel.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: Re: [PATCH 3/8] Add all memory via sysfs probe interface at once

On 08/01/2013 09:32 PM, Michael Ellerman wrote:
> On Wed, Jul 24, 2013 at 01:37:47PM -0500, Nathan Fontenot wrote:
>> When doing memory hot add via the 'probe' interface in sysfs we do not
>> need to loop through and add memory one section at a time. I think this
>> was originally done for powerpc, but is not needed. This patch removes
>> the loop and just calls add_memory for all of the memory to be added.
> 
> Looks like memory hot add is supported on ia64, x86, sh, powerpc and
> s390. Have you tested on any?

I have tested on powerpc. I would love to say I tested on the other
platforms... but I haven't.  I should be able to get a x86 box to test
on but the other architectures may not be possible.

-Nathan

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