linux-kernel - Re: [PATCH 2/3] x86: GEODE: add Virtual Systems Architecture detection

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Message-ID: <20080410152019.52c55686@core>
Date:	Thu, 10 Apr 2008 15:20:19 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Andres Salomon <dilinger@...ued.net>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, info-linux@...de.amd.com,
	jordan.crouse@....com
Subject: Re: [PATCH 2/3] x86: GEODE: add Virtual Systems Architecture
 detection

> > This is a check for *VSA2* which is not the same as VSA1 (Cyrix one) and
> > for older systems that actually matters as you may have VSA1 or VSA2 and
> > they are detected differently.
> >
> 
> Excellent point.  Can we extend this to check for a VSA1-specific
> string, or does VSA1 not have a similar signature?

VSA1 requires you grovelling around poking at the video registers to get
a reliable answer and the only bits we need it for are the DMA bug (where
we assume all have it) and the sound driver (which uses the PCI space to
see what audio setup is there).

X cares but we don't currently.
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