From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dave Feustel Subject: Re: xen 3.0 for AMD Pacifica Date: Tue, 25 Oct 2005 13:20:47 -0500 Message-ID: <200510251320.47925.dfeustel@verizon.net> References: <200510250859.21659.dfeustel@verizon.net> <435E4703.2020601@us.ibm.com> Reply-To: dfeustel@mindspring.com Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 7bit Return-path: In-reply-to: <435E4703.2020601@us.ibm.com> Content-disposition: inline List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: xen-devel@lists.xensource.com List-Id: xen-devel@lists.xenproject.org On Tuesday 25 October 2005 09:53, Anthony Liguori wrote: > Dave Feustel wrote: > > >>We intend to add support for x86 h/w virtualization extensions > >>as information about them becomes available. > >> > >> > > > >What information is needed beyond the Pacifica documentation already > >provided by AMD and the Vanderpool docs provided by Intel? > > > > > I don't know where you're quoting from, but both specs are out publicly. I know. I have both. What I was asking is whether the info in those documents is sufficient to make Xen work with the hardware of both chips, or is additional info needed (and still not available)? > As Mark mentions, there's quite a bit of work to go from specs to > implementation though. > > Both VT and Pacifica are pretty similiar in the basic idea that they > allow the processor to be put in a mode where 30 or so events that > normally don't trap actually do trap. Pacifica has a new paging mode (paged real mode) made possible by the Opteron on-chip memory controller. This feature is not present in VT. > Just having the processor trap though doesn't get you virtualization > :-) Each of those events has to be handled, and often emulated. Throw > in shadow paging and IO emulation and it's all rather complicated. > > Plus, there's not much that can be done without having the hardware at > this point. > > >Is there any possibility of setting up a mailing list directed specifically at > >xen 3.0 hardware supported virtualization? > > > > > There are an awful lot of Xen mailing lists at this point. What would > be *really* useful is having some content on the wiki that went into > more depth about VT/Pacifica. > > Regards, > > Anthony Liguori > > >Thanks, > >Dave Feustel > > > > > > > > > > > _______________________________________________ > Xen-devel mailing list > Xen-devel@lists.xensource.com > http://lists.xensource.com/xen-devel > -- Tired of having to defend against Malware? You know: trojans, viruses, SPYWARE, ADWARE, KEYLOGGERS, rootkits, worms and popups. Then Switch to OpenBSD with a KDE desktop!!!