linux-kernel - Re: [PATCH v8 3/3] mm: reinititalise user and admin reserves if memory is added or removed

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Message-ID: <CAF-E8XEGz4Q7-KWP8-cam1x4vQmpy-s_j3CAW6sUe4T5f_vsoQ@mail.gmail.com>
Date:	Tue, 9 Apr 2013 18:11:04 -0600
From:	Andrew Shewmaker <agshew@...il.com>
To:	Simon Jeons <simon.jeons@...il.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, alan@...rguk.ukuu.org.uk,
	ric.masonn@...il.com
Subject: Re: [PATCH v8 3/3] mm: reinititalise user and admin reserves if
 memory is added or removed

On Tue, Apr 9, 2013 at 6:05 PM, Simon Jeons <simon.jeons@...il.com> wrote:
> Hi Andrew,
>
> On 04/10/2013 07:56 AM, Andrew Shewmaker wrote:
>>
>> On Tue, Apr 9, 2013 at 4:19 PM, Andrew Morton <akpm@...ux-foundation.org>
>> wrote:
>>>
>>> On Mon, 8 Apr 2013 17:00:40 -0400 Andrew Shewmaker <agshew@...il.com>
>>> wrote:
>>>
>>>> Should I add the memory notifier code to mm/nommu.c too?
>>>> I'm guessing that if a system doesn't have an mmu that it also
>>>> won't be hotplugging memory.
>>>
>>> I doubt if we need to worry about memory hotplug on nommu machines,
>>> so just do the minimum which is required to get nommu to compile
>>> and link.  That's probably "nothing".
>>
>> I haven't gotten myself set up to compile a nommu architecture, so I'll
>> post
>> my next version, and work on verifying it compiles and links later. But I
>> I probably won't be able to get to that for a week and a half ... I'm
>> leaving
>> on my honeymoon in the next couple days :)
>
>
> How to compile a  nommu architecture? just config in menu config or a
> physical machine?

I was going to set up a qemu arm guest. Please, anyone, let me know if
there's an easier way to test nommu builds on x86.
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