Re: [Xen-devel] 2.6.16 nor FC5 -xenU kernel will start under 3.0-testing

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

On 31 Mar 2006, at 22:13, Matt Ayres wrote:

> Is not the point of a 3.0 branch that kernels compiled for 3.0.x will 
> run under any version or is there new coded added to both of these 
> kernels that prevent it from running under my older version of Xen?  I 
> could see a kernel developed for Xen 3.1 not working with 3.0.x, but 
> my impression was 3.0.x were all meant to be compatible with each 
> other (forward and backward).
> If this is not meant to work let me know, otherwise I will open up a 
> bug .
Currently we guarantee that old Xen3 kernels will work as domU on new 
Xen3 hypervisor, but not vice versa. We understand that the converse 
will be useful to people (upgrade guest distro but keep existing Xen 
hypervisor installation) and we want to provide compatibility in both 
directions in future.
 -- Keir


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