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

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Message-ID: <20090904073355.GA20598@elte.hu>
Date:	Fri, 4 Sep 2009 09:33:55 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Jeremy Fitzhardinge <jeremy@...p.org>
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


* Jeremy Fitzhardinge <jeremy@...p.org> wrote:

> 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. [...]

Ok, i understood this as an Acked-by from you - lemme know if that's 
wrong ;-)

> [...]  Will having an apparent overlap of vmalloc and fixmap 
> spaces confuse anything?

At most perhaps some debug tools - kcrash & co.

	Ingo
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