Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933108AbbDNSXH (ORCPT ); Tue, 14 Apr 2015 14:23:07 -0400 Received: from plane.gmane.org ([80.91.229.3]:50947 "EHLO plane.gmane.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754129AbbDNSW5 (ORCPT ); Tue, 14 Apr 2015 14:22:57 -0400 X-Injected-Via-Gmane: http://gmane.org/ To: linux-kernel@vger.kernel.org From: =?UTF-8?B?SsO2cmctVm9sa2VyIFBlZXR6?= Subject: Re: [PATCH] x86, aperture: Check for GART before accessing GART registers Date: Tue, 14 Apr 2015 20:22:48 +0200 Message-ID: <552D5AF8.3070705@web.de> References: <1427898728-3434-1-git-send-email-Aravind.Gopalakrishnan@amd.com> <20150402100135.GA5210@gmail.com> <551D661D.3030000@amd.com> <20150402160634.GB8045@gmail.com> <551D6CF5.1010604@amd.com> <20150402165356.GE4579@pd.tnic> <551D7695.2010509@amd.com> <20150402171705.GF4579@pd.tnic> <552CF6DF.3000002@web.de> <20150414113349.GA26075@pd.tnic> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Complaints-To: usenet@ger.gmane.org Cc: linux-kernel@vger.kernel.org, Ingo Molnar , tglx@linutronix.de, mingo@redhat.com, hpa@zytor.com, x86@kernel.org, bhelgaas@google.com, Suravee.Suthikulpanit@amd.com, joro@8bytes.org X-Gmane-NNTP-Posting-Host: p5b0a06df.dip0.t-ipconnect.de In-Reply-To: <20150414113349.GA26075@pd.tnic> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1041 Lines: 31 Hi, Borislav Petkov wrote on 04/14/2015 13:33: > 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. > thank you for the explanation. Somehow I thought I had a newer CPU w/o GART registers, but I misread the patch. Maybe wishful thinking, in the hope to save 64 MB :-( Sorry for the noise. -- Regards, jvp. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/