On Thu, Oct 12, 2017 at 11:02:52AM +0200, Borislav Petkov wrote: > On Wed, Oct 11, 2017 at 04:11:37PM -0700, Andi Kleen wrote: > > Sorry I take back what I wrote earlier. This RCU is actually still needed, > > otherwise the reader could see partially written entries. > > Why? All the readers and writers take the mutex now.