From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Vasile, Alexandru-catalin" Subject: dom0/pvh: Dom0 PVH with PCI passthrough support status Date: Fri, 19 Oct 2018 16:08:45 +0000 Message-ID: <1539965325190.3407@amazon.com> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============6382523240928909717==" Return-path: Received: from all-amaz-eas1.inumbo.com ([34.197.232.57]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gDXKW-0007Lu-Jl for xen-devel@lists.xenproject.org; Fri, 19 Oct 2018 16:08:52 +0000 Content-Language: en-US List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" To: "xen-devel@lists.xenproject.org" Cc: Juergen Gross , Wei Liu , Andrew Cooper , Paul Durrant , Jan Beulich , Roger Pau Monne List-Id: xen-devel@lists.xenproject.org --===============6382523240928909717== Content-Language: en-US Content-Type: multipart/alternative; boundary="_000_15399653251903407amazoncom_" --_000_15399653251903407amazoncom_ Content-Type: text/plain; charset="iso-8859-1" MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Hello, I would like to use Dom0 with PVH mode together with PCI passthrough in ord= er to compare PVH and HVM in a real test scenario for early adoption of PVH= . The minimum setup needed is to have the possibility to assign to a domain= a PCI device that is passthrough. Are there any patches in review or previous discussions on having PCI passt= hrough in Dom0 PVH? Our internal tests showed promising results regarding performance (no PCI p= assthrough), but nonetheless as expected in this early stage of development= a small decrease between 2.5 - 10%. Sacrificing performance for a boost in= security offered by PVH should be a priority. For the final results to be = conclusive and have a fair comparison, it is necessary to have a rough impl= ementation of PCI passthrough (e.g. for a network device). Any help towards this matter would be greatly appreciated. Thanks, Alex Amazon Development Center (Romania) S.R.L. registered office: 27A Sf. Lazar= Street, UBC5, floor 2, Iasi, Iasi County, 700045, Romania. Registered in R= omania. Registration number J22/2621/2005. --_000_15399653251903407amazoncom_ Content-Type: text/html; charset="iso-8859-1" MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable

Hello,

I would like to use Dom0 with PVH mode together with PCI passthrough in ord= er to compare PVH and HVM in a real test scenario for early adoption of PVH= . The minimum setup needed is to have the possibility to assign to a domain= a PCI device that is passthrough.

Are there any patches in review or previous discussions on having PCI passt= hrough in Dom0 PVH?

Our internal tests showed promising results regarding performance (no PCI p= assthrough), but nonetheless as expected in this early stage of development= a small decrease between 2.5 – 10%. Sacrificing performance for a bo= ost in security offered by PVH should be a priority. For the final results to be conclusive and have a fair comp= arison, it is necessary to have a rough implementation of PCI passthrough (= e.g. for a network device).

Any help towards this matter would be greatly appreciated.

Thanks,
Alex




Amazon Development Center (Romania) S.R.L. registered office: 27A Sf. Lazar= Street, UBC5, floor 2, Iasi, Iasi County, 700045, Romania. Registered in R= omania. Registration number J22/2621/2005.

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