From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wi0-f176.google.com (mail-wi0-f176.google.com [209.85.212.176]) by dpdk.org (Postfix) with ESMTP id E69218D8A for ; Thu, 1 Oct 2015 00:20:40 +0200 (CEST) Received: by wicfx3 with SMTP id fx3so7202811wic.1 for ; Wed, 30 Sep 2015 15:20:40 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:subject:to:references:cc:from:message-id:date :user-agent:mime-version:in-reply-to:content-type :content-transfer-encoding; bh=MyPlHOUwsc4InDiJXwqFKCswnenq0o7PvCdpNpf8tnA=; b=mvZl7yMwaiLAhLpTohkTyqnVSrkhzrsTVk4/T9wubN53S6HTFqWzbIFtcakFGEbZkK T9it3+0EN/YrUjVGru9uLrW0vDeFrYPMp5vcek64YtjlhOnex+sv2mGGnmaFfBXPSka7 QL0tgRg09v/bCa62QEhLqrdIkwRqieSUY1wzPvzNHEWD7L6q4LaeoxSSJptAwbUyZ3+G DhEO439jkm9nFX14LGNxLq6zSXAvczNWySN61Zv72m0CXvnPddGD2X60Jy8h7fQIOIo3 sbCISMrTolgm6/Uo4ZlMO2SqMVWOgGPWTGuTuLY5KECUAYroRy2aRx5TBtdIOmW06vdc yQUA== X-Gm-Message-State: ALoCoQk1SelXJfW7mxDWt27XCQ+OsUzH/OB2NrOCPiw91tVzPtJGxbvNLabjWQXiFDlv0HAAwp/L X-Received: by 10.194.134.98 with SMTP id pj2mr7906007wjb.30.1443651640728; Wed, 30 Sep 2015 15:20:40 -0700 (PDT) Received: from [10.0.0.2] (bzq-79-180-197-252.red.bezeqint.net. [79.180.197.252]) by smtp.googlemail.com with ESMTPSA id mx19sm2924611wic.0.2015.09.30.15.20.39 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 30 Sep 2015 15:20:39 -0700 (PDT) To: Stephen Hemminger References: <20150930143927-mutt-send-email-mst@redhat.com> <560BCD2F.5060505@cloudius-systems.com> <20150930150115-mutt-send-email-mst@redhat.com> <560BD284.7040505@cloudius-systems.com> <20150930151632-mutt-send-email-mst@redhat.com> <560BDA81.6070807@cloudius-systems.com> <20150930182155-mutt-send-email-mst@redhat.com> <560C26DC.80209@cloudius-systems.com> <20150930215027-mutt-send-email-mst@redhat.com> <560C32CC.90708@cloudius-systems.com> <20150930222910-mutt-send-email-mst@redhat.com> <560C417D.1050409@cloudius-systems.com> <20150930143648.4b98db81@urahara> From: Vlad Zolotarov Message-ID: <560C6037.9040909@cloudius-systems.com> Date: Thu, 1 Oct 2015 01:20:39 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.1.0 MIME-Version: 1.0 In-Reply-To: <20150930143648.4b98db81@urahara> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit Cc: "dev@dpdk.org" , "Michael S. Tsirkin" Subject: Re: [dpdk-dev] Having troubles binding an SR-IOV VF to uio_pci_generic on Amazon instance X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 30 Sep 2015 22:20:41 -0000 On 10/01/15 00:36, Stephen Hemminger wrote: > On Wed, 30 Sep 2015 23:09:33 +0300 > Vlad Zolotarov wrote: > >> >> On 09/30/15 22:39, Michael S. Tsirkin wrote: >>> On Wed, Sep 30, 2015 at 10:06:52PM +0300, Vlad Zolotarov wrote: >>>>>> How would iommu >>>>>> virtualization change anything? >>>>> Kernel can use an iommu to limit device access to memory of >>>>> the controlling application. >>>> Ok, this is obvious but what it has to do with enabling using MSI/MSI-X >>>> interrupts support in uio_pci_generic? kernel may continue to limit the >>>> above access with this support as well. >>> It could maybe. So if you write a patch to allow MSI by at the same time >>> creating an isolated IOMMU group and blocking DMA from device in >>> question anywhere, that sounds reasonable. >> No, I'm only planning to add MSI and MSI-X interrupts support for >> uio_pci_generic device. >> The rest mentioned above should naturally be a matter of a different >> patch and writing it is orthogonal to the patch I'm working on as has >> been extensively discussed in this thread. >> > I have a generic MSI and MSI-X driver (posted earlier on this list). > About to post to upstream kernel. Great! It would save me a few working days... ;) Thanks, Stephen!