linux-kernel - Re: gcc + kvm + 64 bit ? confused :-/

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Message-ID: <20070711105413.GA18767@one.firstfloor.org>
Date:	Wed, 11 Jul 2007 12:54:13 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	Benjamin Budts <benjamin.budts@...rlet.be>
Cc:	kvm-devel@...ts.sourceforge.net, Andi Kleen <andi@...stfloor.org>,
	linux-kernel@...r.kernel.org
Subject: Re: gcc + kvm + 64 bit ? confused :-/

On Wed, Jul 11, 2007 at 11:43:26AM +0200, Benjamin Budts wrote:
> I'm a bit confused using the -march=xxx options for gcc when using a 
> kernel virtual machine...
> Getting errors on smp when using the -march=nocoma for gcc... possibly 


What errors? 

> because smp is not fully supported yet I suppse.
> 
> I guess my question is, when installing kvm, is the virtual machine 64 
> bit capable or should I install 32 bit OS ?
> 
> I installed an amd64 debian image and it seems to be running 
> fine...except for the problem mentioned above.
> 
> And what type of architecture do i have to mention with gcc in a kvm ? 
> march ... arch...

The same as the host or generic cpu if you're not sure.

-Andi
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