On Fri, Nov 15, 2019 at 12:42:17PM +0100, Paolo Bonzini wrote: > On 14/11/19 21:09, Jim Mattson wrote: > > If I see "AuthenticAMD" in EBX/EDX/ECX, > > does that mean that "GenuineIntel" is *not* supported? I thought > > people were having reasonable success with cross-vendor migration. > > This is (2). But in general passing the host value is the safe choice, > everything else has reasonable success but it's not something I would > recommend in production (and it's something I wouldn't mind removing, > really). Maybe keep it but add a pr_warn_once() to inform the user that exposions are likely? Or make it opt-in via a module param? I've found this useful for smoke testing patches that touch AMD/Hygon/Zhaoxin/Centaur code.
