Re: [RFC][PATCH] tracing/x86: Save CR2 before tracing irqsoff on error_entry

[Peter Zijlstra]

On Thu, Mar 21, 2019 at 11:38:25AM -0700, Andy Lutomirski wrote:

> I suspect we'll want PV spinlocks and other goodies like PV TLB
> shootdown for a long time.  The stuff I'd like to kill eventually is
> the PV "I'm not actually at CPL 0 so I'm faking it" part.

Right, and it's exactly those bits that are PARAVIRT_XXL AFAIU.