linux-kernel - Re: [BUG] x86 kenel won't boot under Virtual PC

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Message-ID: <alpine.LFD.1.10.0809081539280.3117@nehalem.linux-foundation.org>
Date:	Mon, 8 Sep 2008 15:42:08 -0700 (PDT)
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	"H. Peter Anvin" <hpa@...or.com>
cc:	Andi Kleen <andi@...stfloor.org>, linux@...dersweb.net,
	linux-kernel@...r.kernel.org,
	the arch/x86 maintainers <x86@...nel.org>
Subject: Re: [BUG] x86 kenel won't boot under Virtual PC



On Mon, 8 Sep 2008, H. Peter Anvin wrote:
>
> OK, digging some more into this garbage...
> 
> Apparently the situation isn't quite as dire as it first seems.
> At least gcc 4.3.0 doesn't actually pass -mtune= to gas; it just drops the
> option on the floor.  This means this bug isn't manifest when calling from gcc
> (as opposed to invoking as directly.)

Ok, goodie. And we don't pass the -mtune=xyz option when we use gas 
directly, so we should be all ok.

> However, I would still like to push the following patch to be on the safe
> side, ok?

I have no problem with it, with the fix to actually assemble things. But I 
also don't think it's a huge deal (ie not 2.6.27 stuff - we don't know 
if some odd version of as does something odd with -mtune=generic, or 
whether this can interact oddly with some version of gcc perhaps passing 
the _correct_ -mtune to the assembler?).

		Linus
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