[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] RE: [Xen-devel] is a pure usermode backend possible?
> > On Wed, 24 Nov 2010, James Harper wrote: > > I looked through the patch set, and it appears that this integrates > > fairly closely to qemu. I assume that the xenstore state management is > > handled somewhere inside qemu right? > > > > Yes, there is generic code in xen_backend.c to take care of it. > > > Would it be possible to have a completely separate (from qemu) userspace > > backend or would that leave an unclean termination in the event of the > > userspace code crashing? > > > > Yes, it is possible. Of course if the backend crashes the guest would be > in trouble. > > > > Is qemu modular in any way and could support a module build completely > > separately? > > No, it does not. > > However it is possible to start a qemu instance that only provides > the disk backend and does nothing else and can be run in parallel to any > other qemu instance you need for that VM. > You just need to start qemu with command line options to choose the > xenpv machine and comment out all the other xen_be_register apart from > "qdisk" in hw/xen_machine_pv.c > > The fact that the backend is in qemu doesn't mean that has to be run in > the same qemu instance that provides device emulation. > Looks like there are almost too many choices :) Thanks James _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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