linux-kernel - Re: K7/Athlon Optimization Causes Build Fail on Kernel 3.3 i686

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Message-ID: <4F74CAEA.1010606@zytor.com>
Date:	Thu, 29 Mar 2012 13:49:46 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Borislav Petkov <bp@...en8.de>,
	Matt Fleming <matt.fleming@...el.com>,
	Trevor Turner <turn3r.tr3v0r@...il.com>,
	Randy Dunlap <rdunlap@...otime.net>,
	linux-kernel@...r.kernel.org, Al Viro <viro@...iv.linux.org.uk>
Subject: Re: K7/Athlon Optimization Causes Build Fail on Kernel 3.3 i686

On 03/29/2012 01:46 PM, Borislav Petkov wrote:
> On Thu, Mar 29, 2012 at 11:28:40AM -0700, H. Peter Anvin wrote:
>> I like this one for urgent as a quick fix, but it doesn't solve the real
>> problem which is that boot/compressed shouldn't pick up these macros at all.
> 
> But it does through:
> 
> <arch/x86/include/asm/string_32.h>:
> 

That's the problem... it shouldn't use that.

> 
>> It should be possible to build with MK7 (which is an optimization
>> option) and EFI (a functionality option) since they don't inherently
>> conflict.  It just doesn't necessarily have to happen *right now*.
> 
> I know, technically it is doable, but do you see a K7 box with an EFI
> firmware? I, at least, don't think so... :-)
> 
> Now, if you think that those optimizations could be used on other boxes
> which could sport EFI, then that's a whole another question...
> 

What I'm saying, mostly, is that this is indicative of a bigger bug.

	-hpa
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