On 4/13/21 2:14 AM, Juergen Gross wrote: > In x86 kernel development the question came up whether we need to > support XENFEAT_gnttab_map_avail_bits not being set when running as a PV > guest. > > This feature is active for PV guests since Xen 3.4. > > So the basic question is: which is the oldest version of Xen we want to > support in the Linux kernel? As far as I know there is no Xen based > product in productive use with Xen older than 4.2. > > Would we be fine to drop support for older versions (feel free to > suggest other versions than 4.2 as the first to be supported Xen > version)? > > In case the answer is yes, I'd post some patches to clean up the kernel, > including a safety net to bail out in case a feature needed isn't > available. >
Sounds good to me. -boris
