On Fri, Jul 07, 2023 at 12:23:59PM +0800, Baoquan He wrote: > I am wondering why we don't detect the cpu type and return early inside > sev_enable() if it's Intel cpu. > > We can't rely on CONFIG_AMD_MEM_ENCRYPT to decide if the code need be > executed or not because we usually enable them all in distros. Looking at the code in head_64.S, by the time sev_enable() runs the SEV bit should already be set in sev_status. Maybe use that to detect whether SEV is enabled and bail out early? Regards, -- Jörg Rödel jroedel@xxxxxxx SUSE Software Solutions Germany GmbH Frankenstraße 146 90461 Nürnberg Germany (HRB 36809, AG Nürnberg) Geschäftsführer: Ivo Totev, Andrew Myers, Andrew McDonald, Boudien Moerman
