I've posted a correction in the forementioned Tech Help Forums which describes these different Xen implementations and recommends that the User should select the DomU kernel based on first determining what kind of kernel Linode is implementing. Tony On Fri, Mar 13, 2015 at 10:08 AM, Tony Su <tonysu@su-networking.com> wrote:
Thx all, Yes, it does look then like kernel-xen is required for both Dom0 and DomU for the kernels openSUSE/SUSE currently provides.
Tony
On Fri, Mar 13, 2015 at 9:13 AM, Jim Fehlig <jfehlig@suse.com> wrote:
Tony Su wrote:
Additional information selecting kernels for use in Xen (Dom0 or DomU) http://wiki.xen.org/wiki/Xen_Kernel_Feature_Matrix
That is upstream documentation. Distros may be configured differently.
Unless I am misunderstanding the information on this official source - All modern implementations of Xen features for DomU is now implemented through the pvops framework. - The pvops framework is part of the mainline Linux kernel.
Right.
This suggests that a special kernel-xen is not needed for DomU and supports all current documented features.
The pvops kernel is missing features wrt to the xenified kernel. SUSE is actively working on closing the feature gap and moving to pvops, but currently we still use the xenified kernel (kernel-xen).
So, maybe kernel-xen used for DomU would be just another choice to avoid possible issues in another kernel choice but not necessarily recommended?
It's not only recommended, but required in a PV VM. kernel-default, which currently doesn't have pvops enabled, wont boot in a PV VM.
Regards, Jim
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