From mboxrd@z Thu Jan 1 00:00:00 1970 From: Konrad Rzeszutek Wilk Subject: Re: [MINUTES] Monthly Xen.org Technical Call (2015-07-22) Date: Thu, 23 Jul 2015 13:42:58 -0400 Message-ID: <20150723174257.GD6598@konrad-lan.dumpdata.com> References: <1437642526.19412.54.camel@citrix.com> <30D22B78-9B4F-4F80-8CD4-CF2D6753052D@oracle.com> <55B0CD59.1060708@citrix.com> Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Return-path: Received: from mail6.bemta3.messagelabs.com ([195.245.230.39]) by lists.xen.org with esmtp (Exim 4.72) (envelope-from ) id 1ZIKWS-0003GD-0e for xen-devel@lists.xenproject.org; Thu, 23 Jul 2015 17:43:08 +0000 Content-Disposition: inline In-Reply-To: <55B0CD59.1060708@citrix.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: Roger Pau =?iso-8859-1?Q?Monn=E9?= Cc: Elena Ufimtseva , Wei Liu , Ian Campbell , Andrew Cooper , George Dunlap , Stefano Stabellini , David Vrabel , Jan Beulich , Ian Jackson , xen-devel@lists.xenproject.org, Boris Ostrovsky List-Id: xen-devel@lists.xenproject.org On Thu, Jul 23, 2015 at 01:17:45PM +0200, Roger Pau Monn=E9 wrote: > El 23/07/15 a les 12.59, Konrad Rzeszutek Wilk ha escrit: > [...] > > We forgot to speak about dom0. This work outlined will lay out how to d= o it - but the pieces for dom0 are not implemented and would need work (whi= ch actually may be following most of the is_pvh in the hypervisor). > = > Let's do that once we have DomU nailed down and the guest ABI marked as > stable. > = > Some work will indeed be needed for Dom0, for example I would like to > avoid using the current Dom0 builder (construct_dom0, that is suited for > PV, but all the PVH hacks just make it almost impossible to understand) > and start from scratch with a more sane approach. Well construct_dom0 is huge already. Doing surgery on that beast would be most welcome. The other issues that I think we will still encounter - which Elena was looking for AMD - is the handling of decoding of operations on AMD without qemu-dm involvment. Which meant that we could not use any of the mmio_handlers - that I believe will still be an outstanding issue. So will the setting of various states that the toolstack does right now but had never been done in the hypervisor - such as the tsc_scaling for AMD. Lastly the E820 setup and poking/re-organizing the P2M to match it. > = > Roger. > =