From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from bombadil.infradead.org ([198.137.202.9]:50706 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753247AbaCJNEq (ORCPT ); Mon, 10 Mar 2014 09:04:46 -0400 Message-ID: <1394456660.2270.3.camel@shinybook.infradead.org> Subject: Re: [Patch Part2 V2 15/17] iommu/vt-d, PCI: update DRHD/RMRR/ATSR device scope caches when PCI hotplug happens From: David Woodhouse To: Jiang Liu Cc: Joerg Roedel , Yinghai Lu , Bjorn Helgaas , Dan Williams , Vinod Koul , "Rafael J . Wysocki" , Tony Luck , linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, dmaengine@vger.kernel.org, iommu@lists.linux-foundation.org Date: Mon, 10 Mar 2014 06:04:20 -0700 In-Reply-To: <531D7BE8.7060103@linux.intel.com> References: <1392790057-32434-1-git-send-email-jiang.liu@linux.intel.com> <1392790057-32434-16-git-send-email-jiang.liu@linux.intel.com> <1394130319.9994.28.camel@i7.infradead.org> <531D7BE8.7060103@linux.intel.com> Content-Type: multipart/signed; micalg="sha-1"; protocol="application/x-pkcs7-signature"; boundary="=-+tWP9Ncx+FmSUMlXF+N5" Mime-Version: 1.0 Sender: linux-pci-owner@vger.kernel.org List-ID: --=-+tWP9Ncx+FmSUMlXF+N5 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Mon, 2014-03-10 at 16:46 +0800, Jiang Liu wrote: > Hi David, > Good suggestion! It should make hotplug logic simpler too. > Will try to work out some patches for it. Before doing so, please be aware of the WIP at http://git.infradead.org/users/dwmw2/linux-andd.git This is the support for DMA mapping for ACPI devices. Largely thrown together on a plane above the Atlantic over the last day, so mostly untested, but a lot of it is fairly simply switching to using 'struct device' instead of assuming 'struct pci_dev' everywhere. 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