Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754201Ab0DLV5G (ORCPT ); Mon, 12 Apr 2010 17:57:06 -0400 Received: from mga09.intel.com ([134.134.136.24]:43725 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754077Ab0DLV5D (ORCPT ); Mon, 12 Apr 2010 17:57:03 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.52,192,1270450800"; d="scan'208";a="612418183" Date: Mon, 12 Apr 2010 14:56:57 -0700 From: Matthew Wilcox To: Bjorn Helgaas Cc: Andy Isaacson , linux-kernel@vger.kernel.org, Jesse Barnes , Chris Wright , Yinghai Lu , Alan Cox , "H. Peter Anvin" Subject: Re: [2.6.34-rc1 REGRESSION] ahci 0000:00:1f.2: controller reset failed (0xffffffff) Message-ID: <20100412215657.GB19226@linux.intel.com> References: <20100406225425.GA8292@hexapodia.org> <1270612783.8518.15.camel@dc7800.home> <201004121156.41716.bjorn.helgaas@hp.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <201004121156.41716.bjorn.helgaas@hp.com> User-Agent: Mutt/1.5.18 (2008-05-17) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1166 Lines: 24 On Mon, Apr 12, 2010 at 11:56:41AM -0600, Bjorn Helgaas wrote: > Linux thinks the windows are: > pci_root PNP0A03:00: host bridge window [mem 0x000a0000-0x000bffff] > pci_root PNP0A03:00: host bridge window [mem 0x000c0000-0x000effff] > pci_root PNP0A03:00: host bridge window [mem 0x000f0000-0x000fffff] > > The 0xa0000-0xbffff one makes good sense. That's normally MMIO that's > routed via PCI to the VGA device frame buffer, and we should be able > to figure out how to avoid that area, e.g., by using BIOS info, PCI > class codes, etc. > > Now we need to figure how to avoid the 0xc0000-0xeffff and 0xf0000-0xfffff > windows. Maybe there's something special about how ACPI describes them. > > Or maybe we're just unlucky because these are the first windows in the > _CRS list, and Linux tries them in order, while Windows uses a different > strategy. Perhaps it's sufficient to try them in reverse order? -- 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/