linux-kernel - Re: Linux 3.9-rc1

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Message-ID: <CAE9FiQX557z1SXTbVoBO1RHRbU=Re=WnPR-F+B=QfhaFVr9D9g@mail.gmail.com>
Date:	Wed, 6 Mar 2013 14:14:09 -0800
From:	Yinghai Lu <yinghai@...nel.org>
To:	"H. Peter Anvin" <hpa@...ux.intel.com>
Cc:	Henrik Rydberg <rydberg@...omail.se>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: Linux 3.9-rc1

On Wed, Mar 6, 2013 at 1:49 PM, H. Peter Anvin <hpa@...ux.intel.com> wrote:
> On 03/06/2013 01:33 PM, Yinghai Lu wrote:
>> On Wed, Mar 6, 2013 at 12:58 PM, H. Peter Anvin <hpa@...ux.intel.com> wrote:
>>
>>> Excellent.  Yinghai, can you write up the patch with a proper
>>> description and I'll put it into x86/urgent.
>>
>> I made it more robust: make sure real_end have 8M below it.
>> Please check attached one.
>>
>
> Sigh.  This is why "keep the page tables together" is fundamentally the
> wrong strategy.
>
> 8M means that we won't even be able to boot on machines with less than
> 16M or so of RAM... I'm not sure if anyone still cares, but that is a
> pretty aggressive heuristic.

Henrik's system has 5M holes, so i picked 8M.

Current what is minimum ram is required for boot x86 32bit kernel? 8M?

Thanks

Yinghai
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