From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S968768AbdEYH4n (ORCPT ); Thu, 25 May 2017 03:56:43 -0400 Received: from bombadil.infradead.org ([65.50.211.133]:52646 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S968616AbdEYH4l (ORCPT ); Thu, 25 May 2017 03:56:41 -0400 Date: Thu, 25 May 2017 00:56:39 -0700 From: Christoph Hellwig To: haiyangz@microsoft.com Cc: bhelgaas@google.com, linux-pci@vger.kernel.org, kys@microsoft.com, sthemmin@microsoft.com, olaf@aepfle.de, vkuznets@redhat.com, driverdev-devel@linuxdriverproject.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] pci-hyperv: Use only 16 bit integer for PCI domain Message-ID: <20170525075639.GA25929@infradead.org> References: <1495658355-13103-1-git-send-email-haiyangz@exchange.microsoft.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1495658355-13103-1-git-send-email-haiyangz@exchange.microsoft.com> User-Agent: Mutt/1.8.0 (2017-02-23) X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, May 24, 2017 at 01:39:15PM -0700, Haiyang Zhang wrote: > From: Haiyang Zhang > > This patch uses the lower 16 bits of the serial number as PCI > domain, otherwise some drivers may not be able to handle it. > > Besides Nvidia drivers, we also found X.org, and DPDK handle > only 16 bit PCI domain. And they will all break behind VMD for example, so NAK. Linux domains are 32 bits.