linux-kernel - Re: [PATCH] x86, aperture: Check for GART before accessing GART registers

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Message-ID: <20150414113349.GA26075@pd.tnic>
Date:	Tue, 14 Apr 2015 13:33:49 +0200
From:	Borislav Petkov <bp@...en8.de>
To:	Jörg-Volker Peetz <jvpeetz@....de>
Cc:	linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...nel.org>,
	tglx@...utronix.de, mingo@...hat.com, hpa@...or.com,
	x86@...nel.org, bhelgaas@...gle.com, Suravee.Suthikulpanit@....com,
	joro@...tes.org
Subject: Re: [PATCH] x86, aperture: Check for GART before accessing GART
 registers

On Tue, Apr 14, 2015 at 01:15:43PM +0200, Jörg-Volker Peetz wrote:
> Hi,

Hi,

please do not top-post.

> tried this patch on my HP Pavilion notebook wiht AMD Phenom II processor. The
> BIOS has no IOMMU option.
> With this patch I'm still seeing the AGP messages mention in the patch description.
> Is this processor affected at all?

Your CPU has an AGP bridge but the BIOS doesn't leave an aperture so the
kernel has to do it. Read the message.

> /proc/cpuinfo says "cpu family" 16. That is 10h?

Yes.

-- 
Regards/Gruss,
    Boris.

ECO tip #101: Trim your mails when you reply.
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