linux-kernel - Re: [PATCH] x86: reuse the boot-time mappings of fixed

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Message-ID: <4A9C6ADF.2020707@goop.org>
Date:	Mon, 31 Aug 2009 17:29:19 -0700
From:	Jeremy Fitzhardinge <jeremy@...p.org>
To:	Ingo Molnar <mingo@...e.hu>
CC:	"H. Peter Anvin" <hpa@...or.com>,
	Xiao Guangrong <ericxiao.gr@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Rusty Russell <rusty@...tcorp.com.au>,
	Jens Axboe <jens.axboe@...cle.com>,
	Xiao Guangrong <xiaoguangrong@...fujitsu.com>,
	LKML <linux-kernel@...r.kernel.org>, linux-mm@...ck.org,
	x86@...nel.org, Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [PATCH] x86: reuse the boot-time mappings of fixed_addresses

On 08/31/09 01:26, Ingo Molnar wrote:
>>> I'm wondering, how much space do we save this way, on a typical bootup 
>>> on a typical PC?
>>>
>>>       
>> Not a huge lot... a few dozen pages.
>>     
> I guess it's still worth doing - what do you think?
>   

It hardly seems worth it, but I guess it isn't much code.  Will having
an apparent overlap of vmalloc and fixmap spaces confuse anything?

    J
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