On Wed, 2018-07-11 at 10:34 +0200, Peter Zijlstra wrote: > On Tue, Jul 10, 2018 at 03:26:20PM -0700, Yu-cheng Yu wrote: > > > > VM_SHSTK indicates a shadow stack memory area. > > > > A shadow stack PTE must be read-only and dirty. For non shadow > > stack, we use a spare bit of the 64-bit PTE for dirty. The PTE > > changes are in the next patch. > This doesn't make any sense.. the $subject and the patch seem > completely > unrelated to this Changelog. I was trying to say why this is only defined for 64-bit. I will fix it. Yu-cheng