Re: Support of old Xen versions in the Linux kernel

2021-04-13 Thread Stefano Stabellini
On Tue, 13 Apr 2021, Boris Ostrovsky wrote: > 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

Re: Support of old Xen versions in the Linux kernel

2021-04-13 Thread Boris Ostrovsky
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 oldes