From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:44468) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VLIrK-000577-EV for qemu-devel@nongnu.org; Sun, 15 Sep 2013 16:24:00 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1VLIrE-0006xO-9H for qemu-devel@nongnu.org; Sun, 15 Sep 2013 16:23:54 -0400 Received: from mx1.redhat.com ([209.132.183.28]:63651) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VLIrE-0006xJ-27 for qemu-devel@nongnu.org; Sun, 15 Sep 2013 16:23:48 -0400 Date: Sun, 15 Sep 2013 23:25:51 +0300 From: "Michael S. Tsirkin" Message-ID: <20130915202551.GB7526@redhat.com> References: <1379261801-16969-1-git-send-email-marcel.a@redhat.com> <1379261801-16969-4-git-send-email-marcel.a@redhat.com> <20130915173012.GB2838@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Subject: Re: [Qemu-devel] [PATCH v4 3/3] hw/pci: handle downstream pci master abort List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Peter Maydell Cc: Anthony Liguori , Marcel Apfelbaum , Jan Kiszka , QEMU Developers , Paolo Bonzini , Andreas =?iso-8859-1?Q?F=E4rber?= On Sun, Sep 15, 2013 at 06:32:13PM +0100, Peter Maydell wrote: > On 15 September 2013 18:30, Michael S. Tsirkin wrote: > > On Sun, Sep 15, 2013 at 07:16:41PM +0300, Marcel Apfelbaum wrote: > >> +static const MemoryRegionOps master_abort_mem_ops = { > >> + .read = master_abort_mem_read, > >> + .write = master_abort_mem_write, > >> + .endianness = DEVICE_NATIVE_ENDIAN, > >> +}; > >> + > > > > Please make it little endian. > > DEVICE_NATIVE_ENDIAN is almost always a bug. > > ...when dealing with PCI devices. For a random device on the system bus > it's often correct. > > -- PMM native is really qemu host endian-ness ... what are some examples when it's actually correct?