See https://lore.kernel.org/lkml/1512686629.18523.217.camel@codethink.co.uk/T/#u.
Thanks! I'm not using SGI UV and I'm not using kexec, so I guess I sidestepped most of those issues. Greg, I think we need to unrevert the cpa->pfn change (otherwise the L1TF fix probably gets pretty messy) and I guess pull in the other patches that Ben mentions.
- R.