On Thu, Feb 03, 2022 at 02:23:43PM -0800, H.J. Lu wrote: > On Thu, Feb 3, 2022 at 1:58 PM John Allen <john.allen@xxxxxxx> wrote: > > > > On Sun, Jan 30, 2022 at 01:18:38PM -0800, Rick Edgecombe wrote: > > > Shadow stack is supported on newer AMD processors, but the kernel > > > implementation has not been tested on them. Prevent basic issues from > > > showing up for normal users by disabling shadow stack on all CPUs except > > > Intel until it has been tested. At which point the limitation should be > > > removed. > > > > Hi Rick, > > > > I have been testing Yu-Cheng's patchsets on AMD hardware and I am > > working on testing this version now. How are you testing this new > > series? I can partially test by calling the prctl enable for shadow > > stack directly from a program, but I'm not sure how useful that's going > > to be without the glibc support. Do you have a public repo with the > > necessary glibc changes to enable shadow stack early? > > > > The glibc CET branch is at > > https://gitlab.com/x86-glibc/glibc/-/commits/users/hjl/cet/master Thanks, I ran some smoke tests with the updated glibc and it's looking good so far. Additionally, I ran the new kselftest and it passed. Thanks, John > > -- > H.J.
