Ian Pratt
2005-Dec-30 22:13 UTC
RE: Using the -xen kernel rather than -xen0/U was [Xen-users] Poorhard disk performance on xen-3/dom0
> > You will get a single kernel and modules which can be used for both > > Domain0 and all DomainUs. > > But in typical deployments the domU''s typically have the > priviliged kernel option and backend driver options disabled. > Sounds like this is good only for dom0, but you could get > the same benefits by cd''ing to dom0''s source tree and running > "ARCH=xen make menuconfig" (enabling stuff as native instead > of modules as you please).Sure, you''ll domU kernel may need an initrd (depends on the filesystem) and will need modules installed in the guest filesystem. It won''t be any larger than a -xenU kernel. The fact that it has privileged and back-end modules built for it doesn''t matter -- it can''t actually use any of them as Xen won''t allow it. Ian _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Tim Freeman
2005-Dec-30 23:13 UTC
Re: Using the -xen kernel rather than -xen0/U was [Xen-users] Poorhard disk performance on xen-3/dom0
On Fri, 30 Dec 2005 22:13:53 -0000 "Ian Pratt" <m+Ian.Pratt@cl.cam.ac.uk> wrote:> > > > > You will get a single kernel and modules which can be used for both > > > Domain0 and all DomainUs. > > > > But in typical deployments the domU''s typically have the > > priviliged kernel option and backend driver options disabled. > > Sounds like this is good only for dom0, but you could get > > the same benefits by cd''ing to dom0''s source tree and running > > "ARCH=xen make menuconfig" (enabling stuff as native instead > > of modules as you please). > > Sure, you''ll domU kernel may need an initrd (depends on the filesystem) > and will need modules installed in the guest filesystem. It won''t be > any larger than a -xenU kernel. The fact that it has privileged and > back-end modules built for it doesn''t matter -- it can''t actually use > any of them as Xen won''t allow it.Oh, did this change? I was under the impression we could have a guest domain take control of a NIC, for example. Thanks, Tim _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users