Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Wed, 23 Jan 2002 07:32:42 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Wed, 23 Jan 2002 07:32:32 -0500 Received: from sun.fadata.bg ([80.72.64.67]:61444 "HELO fadata.bg") by vger.kernel.org with SMTP id ; Wed, 23 Jan 2002 07:32:17 -0500 To: "David S. Miller" Cc: manfred@colorfullife.com, masp0008@stud.uni-saarland.de, drobbins@gentoo.org, linux-kernel@vger.kernel.org Subject: Re: Athlon/AGP issue update In-Reply-To: <3C4E9291.8DA0BD7F@stud.uni-saarland.de> <20020123.034411.71089598.davem@redhat.com> X-No-CC: Reply to lists, not to me. From: Momchil Velikov In-Reply-To: <20020123.034411.71089598.davem@redhat.com> Date: 23 Jan 2002 14:32:57 +0200 Message-ID: <87wuy9b62u.fsf@fadata.bg> Lines: 16 User-Agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.1 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org >>>>> "David" == David S Miller writes: David> 4MB pages map the GART pages and "other stuff", ie. memory used by David> other subsystems, user pages and whatever else. This is the only David> way the bug can be thus triggered for kernel mappings, which is why David> turning off 4MB pages fixes this part. Erm, why would the granularity of mapping matter at all ? Or, for that matter, the very existanse of address translation ? David> The only unresolved bit is the fact that we map these GART pages David> cacheable into user space. That ought to cause the problem too. They're mapped with 4KB pages too, right ? What makes it diferent to 4KB kernel mappings ? - 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/