On 04/06/2018 09:33 AM, George Dunlap wrote: > On Fri, Apr 6, 2018 at 2:12 PM, Juergen Gross <jgr...@suse.com> wrote: >> >> So its time for a new XENFEAT_ value then? This would be the least >> intrusive way to add such a flag. Something like >> XENFEAT_linux_high_rsdp_address_okay ? > That sounds reasonable to me. I'd personally make it something like > "reads_rsdp_from_start_info" or something, but the name doesn't matter > to me as much. :-) > > The other option would be to introduce a "max_pvh_interface_supported" > or something. If it's not present (and it's a Linux kernel), default > it to '0', and have that mean "RSDP must be under 1MiB". > > That will allow us elbow-room in the future if we want to make other > breaking changes like this, without needing to keep a separate flag > around for each one indefinitely.
I slightly more prefer a per-feature bit. It is indeed somewhat more maintenance-heavy but is also more flexible. -boris _______________________________________________ Xen-devel mailing list Xenfirstname.lastname@example.org https://lists.xenproject.org/mailman/listinfo/xen-devel