Date: Fri, 23 Mar 2007 21:29:52 -0500 From: "Nikolas Britton" <nikolas.britton@gmail.com> To: "Kip Macy" <kip.macy@gmail.com> Cc: freebsd-stable@freebsd.org, Miroslav Lachman <000.fbsd@quip.cz>, Ivan Voras <ivoras@fer.hr> Subject: Re: Xen Dom0, are we making progress? Message-ID: <ef10de9a0703231929qb7f3d9dod7f1d35712c32f82@mail.gmail.com> In-Reply-To: <b1fa29170703131735n687f67fcs58bc52a4a4eb99ab@mail.gmail.com> References: <ef10de9a0703121216k1035481bwc7df222a92b44400@mail.gmail.com> <ef10de9a0703121237q3de9f79o76a4358905357f10@mail.gmail.com> <et4aql$p7j$1@sea.gmane.org> <b1fa29170703121300v409bb3c8x457f2f329184d0e5@mail.gmail.com> <45F6E572.3070706@quip.cz> <b1fa29170703131735n687f67fcs58bc52a4a4eb99ab@mail.gmail.com>
next in thread | previous in thread | raw e-mail | index | archive | help
On 3/13/07, Kip Macy <kip.macy@gmail.com> wrote: > > I know you were working on Xen support in FreeBSD, but web about it > > (http://www.fsmware.com/xenofreebsd/7.0/STATUS) has one year old info > > (support planned in FreeBSD 6.1). So is there any progress, or Xen will > > not be in any near future release? > > Basically Xen did not mature in the fashion that I anticipated. As far > as I can tell it is really only good for server consolidation for > large Linux distro vendors. You need to have what amounts to a private > branch. The xen developers don't appear to understand the importance > of interface versioning. They broke ABI compatibility going from 3.0.2 > -> 3.0.3 (trivial to fix, but that is not the point). When last I > worked on it, they had one branch that was in constant flux and > another branch that only received minor bug fixes and was 18 months > behind from a functionality standpoint (think 5.x / 4.x). There are > numerous other logging / supportability issues that I think are only > addressed by the major distros. As it stood 6 months ago, unless you > understood the internals of various bits of the code, there was no way > of diagnosing failures due to a misconfiguration. > > This is not to say that it isn't cool technology, but rather that > isn't going to be useful for the things I wanted to use it for so my > time is being directed elsewhere. If I ever have a need for EC2 I may > look at it again. > > One of the guys who ported FreeBSD to the xbox has expressed interest > - so something may yet come of it. > > I'm happy to provide technical support to an individual who is largely > self-sustaining in working on the code. > What about implementing something like DragonFly BSD virtual kernels? Matthew Dillon talks about it in is bsdtalk interview: http://cisx1.uma.maine.edu/~wbackman/bsdtalk/bsdtalk098.mp3 I suppose it's sorta like linux compat / windows on windows / coLinux... Towards the end of the interview he talk about it being extremely easy to implement: 1. signal mailboxes. 2. memory map / virtual page table support. 3. vm space management.
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?ef10de9a0703231929qb7f3d9dod7f1d35712c32f82>