From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christoph Egger Subject: Re: Xen 4.2 new features and status -- please help me make a list Date: Fri, 7 Sep 2012 16:26:46 +0200 Message-ID: <504A0426.2090607@amd.com> References: <1347027296.30018.108.camel@zakaz.uk.xensource.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1347027296.30018.108.camel@zakaz.uk.xensource.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: Ian Campbell Cc: xen-devel List-Id: xen-devel@lists.xenproject.org On 09/07/12 16:14, Ian Campbell wrote: > Hi all, > > I've been trawling the mercurial logs looking for interesting new > features to update http://wiki.xen.org/wiki/Xen_4.2_Feature_List and > http://wiki.xen.org/wiki/Xen_Release_Features and have come up with a > list of interesting things which I need to know more about before I can > say stuff. > > I've bcc'd people who I think might know about one or more of the > following. If you do then please can you tell me: > > * What is the feature, what is the impact for the end user? > * What is it's status in 4.2? Is it a proof of concept, an > experimental feature, tech preview or a finished completed > feature. > * Is it new in 4.2? If it isn't new what was it's status in 4.1 > and 4.0 (i.e. from the list in the previous item). > > Of course if you know of a feature in 4.2 which isn't mentioned but > which you think is worthwhile please let me know. I'm sure there are > plenty which I missed. > > Also feel free to edit the wiki instead.... > > TIA for your help. > > Ian. > > Nested Virtualisation: Allow HVM guests to use virtualisation hardware > (e.g. Windows 7 compat mode) > Tech Preview, new in 4.2 > > vMSI: ? Emulated (or real?) MSIs for guests? > State? New in 4.2? > > vMCE: Forward MCE (Machine Check Exceptions) to guests > New in 4.2? Preview or complete? I know improvements are pending > to migration in 4.3. > > AMD OSVW: What is this? > Seems to be new in 4.2? OSVW (OS Visible Workarounds): Support for guests has been added to make them disable workarounds for hw bugs not emulated/present for guests. Christoph > > xenpaging: Page HVM guest pages to disk > Was marked as tech preview in 4.1 and earlier, still is? > > memsharing: Sharing of HVM guest pages. > Was marked as tech preview in 4.1 and earlier, still is? > > Intel HLE: What is this? > Seems to be new in 4.2? > > Intel TRM: What is this? > Seems to be new in 4.2? > > OVMF support for HVM guests. > New in 4.2, but disabled by default => Tech preview? > > vPMU: Power Management? > New in 4.2? > > ASID support: > 4.2 gained an option to control this but I think it was > pre-existing. When was it first introduced? 4.1 or 4.0 or > before? > > Core parking: Offlining CPUs for power reasons? > New in 4.2? > > PV netboot: Network boot for PV guests > New in 4.2 > > > -- ---to satisfy European Law for business letters: Advanced Micro Devices GmbH Einsteinring 24, 85689 Dornach b. Muenchen Geschaeftsfuehrer: Alberto Bozzo Sitz: Dornach, Gemeinde Aschheim, Landkreis Muenchen Registergericht Muenchen, HRB Nr. 43632