On Wed, 2018-07-11 at 13:29 +0200, Joerg Roedel wrote: > Hi, > > here is version 7 of my patches to enable PTI on x86-32. > Changes to the previous version are: > > * Rebased to v4.18-rc4 > > * Introduced pti_finalize() which is called after > mark_readonly() and used to update the kernel > mappings in the user page-table after RO/NX > protections are in place. > > The patches need the vmalloc/ioremap fixes in tip/x86/mm to > work correctly, because this enablement makes the issues > fixed there more likely to happen. Hi Joerg & *, I redid my testing on bare metal and in a VM (as with my previous testing efforts: https://lkml.org/lkml/2018/2/19/844, same setups and coverage, plus CONFIG_X86_DEBUG_ENTRY_CR3 enabled too) with the pti-x32-v7 branch, and I didn't encounter any issues. The two DRM drivers that were triggering bugs in some of the prior iterations are both behaving properly for me. Regards, Dave
