From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jan Kiszka Subject: Re: [PATCH 0/9] pci-assign: 64bit MMIO + better MSI-X table support Date: Mon, 30 Jan 2012 11:11:39 +0100 Message-ID: <4F266CDB.4080504@siemens.com> References: <20120128142104.25681.93072.stgit@bling.home> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Cc: kvm@vger.kernel.org, shashidhar.patil@gmail.com To: Alex Williamson Return-path: Received: from thoth.sbs.de ([192.35.17.2]:22889 "EHLO thoth.sbs.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752222Ab2A3KLo (ORCPT ); Mon, 30 Jan 2012 05:11:44 -0500 In-Reply-To: <20120128142104.25681.93072.stgit@bling.home> Sender: kvm-owner@vger.kernel.org List-ID: On 2012-01-28 15:21, Alex Williamson wrote: > Patch 1 & 2 here are independent of the rest, but I include them > here to avoid conflicts. The first patch enables exposing MMIO > BARs as their native width to the guest. I added a config option > for this with the default to use the existing behavior as I > suspect we may have some latent issues there. Patch 2 is just > some trivial debug build warning fixes. > > The rest of the patches work on improving MSI-X table support. > Particularly, vectors can now be updated by the guest after > MSI-X is enabled to support things like irqbalance for SMP > affinity tuning. We also now update MSI-X configuration as > new vectors are unmasked, which enables assignment of MSI-X > devices on FreeBSD. I was able to assign and use an 82576 > (PF & VF) on a FreeBSD 9.0 guest with this series. Hopefully > Shashidhar can report whether this improves the behavior he > as seeing with an 82599. > > I wasn't able to get masking to work reliably, so I left that > as is for now. Perhaps someone has suggestions on getting that > to work. Thanks, Unless it's urging, let's focus on getting this implemented via the MSI/MSI-X core, not widely duplicated in device-assignment. Jan -- Siemens AG, Corporate Technology, CT T DE IT 1 Corporate Competence Center Embedded Linux