From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:32983) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UVeIg-0000tq-Ou for qemu-devel@nongnu.org; Fri, 26 Apr 2013 04:46:40 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1UVeIf-0008K0-7O for qemu-devel@nongnu.org; Fri, 26 Apr 2013 04:46:38 -0400 Received: from mail-oa0-f43.google.com ([209.85.219.43]:56032) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UVeIf-0008Jf-2c for qemu-devel@nongnu.org; Fri, 26 Apr 2013 04:46:37 -0400 Received: by mail-oa0-f43.google.com with SMTP id k7so3731067oag.2 for ; Fri, 26 Apr 2013 01:46:35 -0700 (PDT) Message-ID: <517A3EE3.4050607@ozlabs.ru> Date: Fri, 26 Apr 2013 18:46:27 +1000 From: Alexey Kardashevskiy MIME-Version: 1.0 References: <1366804881-553-1-git-send-email-david@gibson.dropbear.id.au> <1366804881-553-5-git-send-email-david@gibson.dropbear.id.au> <1366816359.2918.703.camel@bling.home> <5178095D.7080808@redhat.com> <20130425063636.GQ4297@truffula.fritz.box> <517A3E64.8010103@redhat.com> In-Reply-To: <517A3E64.8010103@redhat.com> Content-Type: text/plain; charset=KOI8-R; format=flowed Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [PATCH 4/5] vfio: Move container list to DMAContext List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Paolo Bonzini Cc: Alex Williamson , qemu-devel@nongnu.org, David Gibson On 04/26/2013 06:44 PM, Paolo Bonzini wrote: > Il 25/04/2013 08:36, David Gibson ha scritto: >> On Wed, Apr 24, 2013 at 06:33:33PM +0200, Paolo Bonzini wrote: >>> Il 24/04/2013 17:12, Alex Williamson ha scritto: >>>>>> At the moment, vfio maintains a global list of containers >>>>>> that are assumed to be more or less interchangeable, since >>>>>> they are all set up with a MemoryListener to have all of >>>>>> system memory mapped. However, that only makes sense if >>>>>> all the containers are used on devices which really do >>>>>> expect a dma address space identical to system memory. >>>>>> >>>>>> This patch moves towards that by making the list of >>>>>> containers per DMAContext (which corresponds to a dma >>>>>> address space) instead of global. >>>> This seems like an unnecessary intrusion into common code. Why >>>> not create a vfio specific list of dma objects, each with a >>>> list of containers? Thanks, >>> >>> Yeah, I suggest that this is re-evaluated on top of the iommu >>> patches. >> >>> You can find them at git://github.com/bonzini/qemu.git, branch >>> iommu. It seems to work with pseries, at least my guest crashes >>> at the same place with and without. USB works, and so do VGA and >>> spapr-vscsi. >> >> Ok, I'll have a look when I get a chance. Any guesses as to when >> they might reach mainline? > > If I get your Tested-by, early in 1.6. Emulated PCI works on ppc64/spapr so far. -- Alexey