From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Zhao, Yu" Subject: Re: [PATCH v3 0/6] ATS capability support for Intel IOMMU Date: Fri, 20 Mar 2009 10:47:17 +0800 Message-ID: <49C303B5.5040707@intel.com> References: <1234443038-15437-1-git-send-email-yu.zhao@intel.com> <20090319193043.583ad601@hobbes.lan> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: "linux-pci@vger.kernel.org" , "iommu@lists.linux-foundation.org" , "kvm@vger.kernel.org" , "linux-kernel@vger.kernel.org" To: Jesse Barnes , "dwmw2@infradead.org" Return-path: In-Reply-To: <20090319193043.583ad601@hobbes.lan> Sender: linux-pci-owner@vger.kernel.org List-Id: kvm.vger.kernel.org Jesse Barnes wrote: > On Thu, 12 Feb 2009 20:50:32 +0800 > Yu Zhao wrote: > >> This patch series implements Address Translation Service support for >> the Intel IOMMU. ATS makes the PCI Endpoint be able to request the >> DMA address translation from the IOMMU and cache the translation in >> the Endpoint, thus alleviate IOMMU pressure and improve the hardware >> performance in the I/O virtualization environment. >> >> >> Changelog: v2 -> v3 >> 1, throw error message if VT-d hardware detects invalid descriptor >> on Queued Invalidation interface (David Woodhouse) >> 2, avoid using pci_find_ext_capability every time when reading ATS >> Invalidate Queue Depth (Matthew Wilcox) >> Changelog: v1 -> v2 >> added 'static' prefix to a local LIST_HEAD (Andrew Morton) >> >> >> Yu Zhao (6): >> PCI: support the ATS capability >> VT-d: parse ATSR in DMA Remapping Reporting Structure >> VT-d: add queue invalidation fault status support >> VT-d: add device IOTLB invalidation support >> VT-d: cleanup iommu_flush_iotlb_psi and flush_unmaps >> VT-d: support the device IOTLB > > Um nevermind, this should go through the IOMMU tree (David?). If it's possible, I'd like it go through the PCI tree because the ATS depends on the SR-IOV. This dependency is not reflected in this v3 series since the SR-IOV is not in-tree and I don't want to break the build after people apply the ATS on their tree. So Dave, can I get an ack from you and let Jesse pull the IOMMU change to his tree? Or let this ATS go to 2.6.31? Thanks, Yu