Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752728AbXJUMRy (ORCPT ); Sun, 21 Oct 2007 08:17:54 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751501AbXJUMRr (ORCPT ); Sun, 21 Oct 2007 08:17:47 -0400 Received: from rv-out-0910.google.com ([209.85.198.186]:8503 "EHLO rv-out-0910.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751461AbXJUMRq (ORCPT ); Sun, 21 Oct 2007 08:17:46 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=NekCUqIg6+VSzoWhajB2uoReH63cqrEfkfxVq17yG2uZj4v8FqRDyIEcxRbWZg/VEnWf03y/x644rRmq+nVUCcPiw33ArAkm7OQ3atQ2UYIm5a7B6IJXOjpKj0zAV79ZUs9bCeeNChjTjuEMvtycjh5K9r9+srqhI2CyjlrEHv8= Message-ID: <21d7e9970710210517y585bf5a2lda34f0ae2d8b6183@mail.gmail.com> Date: Sun, 21 Oct 2007 22:17:45 +1000 From: "Dave Airlie" To: "Andi Kleen" Subject: Re: Interaction between Xen and XFS: stray RW mappings Cc: "Nick Piggin" , "David Chinner" , "Jeremy Fitzhardinge" , xfs@oss.sgi.com, Xen-devel , "Linux Kernel Mailing List" , "Mark Williamson" , "=?ISO-8859-1?Q?Morten_B=C3=B8geskov?=" , xfs-masters@oss.sgi.com In-Reply-To: <20071015125407.GA13329@one.firstfloor.org> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <470FA7C3.90404@goop.org> <200710160056.47458.nickpiggin@yahoo.com.au> <20071015110735.GA11748@one.firstfloor.org> <200710152128.10900.nickpiggin@yahoo.com.au> <20071015125407.GA13329@one.firstfloor.org> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 857 Lines: 21 On 10/15/07, Andi Kleen wrote: > > Hmm, OK. It looks like DRM vmallocs memory (which gives highmem). > > I meant I'm not sure if it uses that memory uncached. I admit > not quite understanding that code. There used to be at least > one place where it set UC for an user mapping though. Currently the only DRM memory handed to userspace is vmalloc_32 in drm_scatter.c I notice the VIA driver does its own vmalloc for dmablit, so it may have an issue with this if highmem is involved. This will change with the upcoming memory manager so I'll need to investigate it a bit perhaps... Dave. - 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/