On Thu, Apr 25, 2019 at 3:27 PM Paul Turner via Lsf-pc <lsf-pc@xxxxxxxxxxxxxxxxxxxxxxxxxx> wrote: > > On Thu, Apr 25, 2019 at 2:56 PM James Bottomley < > James.Bottomley@xxxxxxxxxxxxxxxxxxxxx> wrote: > > > On Thu, 2019-04-25 at 13:47 -0700, Jonathan Adams wrote: > > > It looks like the MM track isn't full, and I think this topic is an > > > important thing to discuss. > > > > Mike just posted the RFC patches for this using a ROP gadget preventor > > as a demo: > > > > > > https://lore.kernel.org/linux-mm/1556228754-12996-1-git-send-email-rppt@xxxxxxxxxxxxx > > > > but, unfortunately, he won't be at LSF/MM. > > > > James > > > > Mike's proposal is quite different, and targeted at restricting ROP > execution. > The work proposed by Jonathan is aimed to transparently restrict > speculative execution to provide generic mitigation against Spectre-V1 > gadgets (and similar) and potentially eliminate the current need for for > page table switches under most syscalls due to Meltdown. sounds very interesting. "v1 gadgets" would include unpriv bpf code too?
