On Tue, Feb 11, 2020 at 02:46:11PM -0800, Andy Lutomirski wrote: > On Tue, Feb 11, 2020 at 5:53 AM Joerg Roedel <joro@xxxxxxxxxx> wrote: > > +/* Runtime GHCBs */ > > +static DEFINE_PER_CPU_DECRYPTED(struct ghcb, ghcb_page) __aligned(PAGE_SIZE); > > Hmm. This is a largeish amount of memory on large non-SEV-ES systems. > Maybe store a pointer instead? It would be even better if it could be > DEFINE_PER_CPU like this but be discarded if we don't need it, but I > don't think we have the infrastructure for that. Yeah, discarding is not easily possible right now, but I changed it to only store a pointer and allocating the pages only when running as an SEV-ES guest. Regards, Joerg
