On Thu, Jul 4, 2019 at 1:03 PM Peter Zijlstra <pet...@infradead.org> wrote: > > The one paravirt read_cr2() implementation (Xen) is actually quite > trivial and doesn't need to clobber anything other than the return > register. By making read_cr2() CALLEE_SAVE we avoid all the PUSH/POP > nonsense and allow more convenient use from assembly.
Wow, this is incomprehensible! :) I'll trust Juergen's review. --Andy
