From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jesse Barnes Subject: Re: [PATCH] x86/PCI: parse additional host bridge window resource types Date: Thu, 22 Apr 2010 16:17:49 -0700 Message-ID: <20100422161749.5e8af128@virtuousgeek.org> References: <20100420195241.13265.93577.stgit@bob.kio> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20100420195241.13265.93577.stgit@bob.kio> Sender: linux-pci-owner@vger.kernel.org To: Bjorn Helgaas Cc: linux-pci@vger.kernel.org, linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org, Thomas Renninger List-Id: linux-acpi@vger.kernel.org On Tue, 20 Apr 2010 13:52:41 -0600 Bjorn Helgaas wrote: > > This adds support for Memory24, Memory32, and Memory32Fixed descriptors in > PCI host bridge _CRS. > > I experimentally determined that Windows (2008 R2) accepts these descriptors > and treats them as windows that are forwarded to the PCI bus, e.g., if > it finds any PCI devices with BARs outside the windows, it moves them into > the windows. > > I don't know whether any machines actually use these descriptors in PCI > host bridge _CRS methods, but if any exist and they're new enough that we > automatically turn on "pci=use_crs", they will work with Windows but not > with Linux. > > Here are the details: https://bugzilla.kernel.org/show_bug.cgi?id=15817 > > Signed-off-by: Bjorn Helgaas > --- Applied to for-linus, thanks. -- Jesse Barnes, Intel Open Source Technology Center