Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753208AbcCLBJQ (ORCPT ); Fri, 11 Mar 2016 20:09:16 -0500 Received: from mail-io0-f195.google.com ([209.85.223.195]:34730 "EHLO mail-io0-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751287AbcCLBJL (ORCPT ); Fri, 11 Mar 2016 20:09:11 -0500 MIME-Version: 1.0 In-Reply-To: References: <20160303164533.3025.82439.stgit@bhelgaas-glaptop2.roam.corp.google.com> <20160308174558.GC19869@localhost> <20160311232920.GA27552@localhost> Date: Fri, 11 Mar 2016 17:09:10 -0800 X-Google-Sender-Auth: 0-NJjLBrcJ-1cHfZxs2hZ9DyJs8 Message-ID: Subject: Re: [PATCH v1 00/12] PCI: Rework shadow ROM handling From: Linus Torvalds To: Andy Lutomirski Cc: Bjorn Helgaas , Bjorn Helgaas , "linux-pci@vger.kernel.org" , Matthew Garrett , Tony Luck , DRI , Fenghua Yu , Intel Graphics Development , "linux-kernel@vger.kernel.org" , Ralf Baechle , =?UTF-8?Q?Bruno_Pr=C3=A9mont?= , Daniel Stone , Alex Deucher , =?UTF-8?B?VmlsbGUgU3lyasOkbMOk?= Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 585 Lines: 15 On Fri, Mar 11, 2016 at 4:49 PM, Andy Lutomirski wrote: > > FWIW, if I disable all the checks in pci_get_rom_size, I learn that my > video ROM consists entirely of 0xff bytes. Maybe there just isn't a > ROM shadow on my laptop. I think most laptops end up having the graphics ROM be part of the regular system flash, and there is no actual rom associated with the PCI device that is the GPU itself. The actual GPU ROM tends to be associated with plug-in cards, not soldered-down chips in a laptop where they don't want extra flash chips. Linus