linux-kernel - Re: does boot loader check uncompressed kernel size?

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Message-ID: <49A8F0E5.10307@zytor.com>
Date:	Sat, 28 Feb 2009 00:08:05 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Yinghai Lu <yinghai@...nel.org>
CC:	Cyrill Gorcunov <gorcunov@...il.com>, Ingo Molnar <mingo@...e.hu>,
	Jeremy Fitzhardinge <jeremy@...p.org>,
	the arch/x86 maintainers <x86@...nel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Jeremy Fitzhardinge <jeremy.fitzhardinge@...rix.com>
Subject: Re: does boot loader check uncompressed kernel size?

Yinghai Lu wrote:
> On Fri, Feb 27, 2009 at 11:47 PM, Cyrill Gorcunov <gorcunov@...il.com> wrote:
>> [Yinghai Lu - Fri, Feb 27, 2009 at 11:39:06PM -0800]
>> | wonder if boot loader check uncompress size aka vmlinux size in bzImage
>> | before it find one good position for bzImage...?
>> |
>> | YH
>> |
>>
>> At least for x86-64 in grub-1.96 I didn't find such a check.
>> Btw, but why should it care? Or you mean something else?
> 
> thinking about Jeremy's brk patches that may use ram after _end blindly...
> 

We already do that.  Jeremy's brk patches just formalizes it.

	-hpa

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