linux-kernel - Re: [BUGFIX] Fix AES-NI CTR optimization compiling failure with gas 2.16.1

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Date:	Fri, 12 Mar 2010 11:33:26 +0200
From:	Avi Kivity <avi@...hat.com>
To:	David Miller <davem@...emloft.net>
CC:	ying.huang@...el.com, akpm@...ux-foundation.org,
	herbert@...dor.apana.org.au, linux-kernel@...r.kernel.org,
	linux-crypto@...r.kernel.org
Subject: Re: [BUGFIX] Fix AES-NI CTR optimization compiling failure with gas
 2.16.1

On 03/12/2010 10:50 AM, David Miller wrote:
> From: Avi Kivity<avi@...hat.com>
> Date: Fri, 12 Mar 2010 10:44:58 +0200
>
>    
>> Strange, that people can install a new kernel, but not a new
>> assembler.
>>      
> Someone shouldn't have to upgrade their tools to build the
> kernel.
>    

The kernel would still build, just without the AES-NI CTR optimization 
(or kvm).

> And we work very hard to make sure this is the case except
> in the most unavoidable situations.
>    

Why so hard?  It has a cost.  The user can certainly 'make 
AS=~/new-binutils/bin/gas' and it wouldn't even affect the rest of their 
system.

tools/as/ anyone?

-- 
Do not meddle in the internals of kernels, for they are subtle and quick to panic.

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