----- Original Message ----- > From: "Bill Davidsen" <davidsen@xxxxxxx> > To: dlaor@xxxxxxxxxx > Cc: xen@xxxxxxxxxxxxxxxxxxxxxxx, virt@xxxxxxxxxxxxxxxxxxxxxxx, "M A Young" <m.a.young@xxxxxxxxxxxx> > Sent: Monday, November 8, 2010 11:52:08 AM > Subject: Re: [fedora-virt] Dom0 xen support in Fedora 15? > Dor Laor wrote: > > On 11/08/2010 04:55 AM, M A Young wrote: > > > >> I am trying to work out whether it is practical to propose Dom0 xen > >> support as a feature for Fedora 15. > >> > >> The kernel situation is that Domain 0 has been accepted upstream > >> for > >> 2.6.37. Assuming a 3 month kernel release cycle, F15 will most > >> likely ship > >> with a 2.6.37.x kernel, with 2.6.38 coming out either after the F15 > >> release or just before but too late to be included. If the plan to > >> get key > >> xen drivers into 2.6.38 succeeds, then F15 may be become usable as > >> a > >> Domain 0 system at some point during its lifetime as the kernel > >> package in > >> a Fedora version typically has one major update. > >> > >> If the kernel team accept backported patches then it might just be > >> possible to ship F15 with usable Domain 0 support but the timescale > >> for > >> that would be very tight. > >> > >> The other thing we would need to consider is what needs to be done > >> to make > >> xen friendly enough to be usable by an ordinary user. The page > >> https://fedoraproject.org/wiki/Features/XenPvopsDom0 contains plans > >> from > >> when dom0 xen support was expected to make a quick return to > >> Fedora, but > >> they are a couple of years old now so probably need updating. > >> > >> I think as a minimum we would need a way to add a dom0 enabled grub > >> entry > >> for a kernel, rather than requiring the user to hand edit the grub > >> file. > >> We should also make sure that xen works with the other Fedora > >> virtualisation tools. > >> > >> What do others think about this? For example is it achievable as a > >> feature, is it too early and better to wait for F16, and what else > >> should > >> we aim to do to make xen usable in Fedora? > >> > > Have you consider kvm? it's upstream since 2.6.20 and now its more > > ready > > than ever. > > > > There are some good tutorials which should explain the difference > between xen and kvm, particularly the performance and hardware > requirements of each. re: hardware requirements, KVM's requirement for VT-X/AMD-V extensions certainly used to be a concern 2-3 years ago but today even laptops come with this support. And regarding performance they days of Xen outperforming KVM have long-since passed. > > -- > Bill Davidsen<davidsen@xxxxxxx> > "We can't solve today's problems by using the same thinking we > used in creating them." - Einstein > > _______________________________________________ > virt mailing list > virt@xxxxxxxxxxxxxxxxxxxxxxx > https://admin.fedoraproject.org/mailman/listinfo/virt -- xen mailing list xen@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/xen
