On 01/05/2018 09:44 AM, Dave Hansen wrote: > Changes from v3: > * Increasingly minor text fixes.
Yeah. Just merge it and use patches for anything else. Reviewed-by: Randy Dunlap <rdun...@infradead.org> Thanks. > Changes from v2: > * Update some wording > * Minor typo and grammar fixes > * Further clarify what INVPCID is. > > Changes from v1: > * update kernel-parameters.txt to clarify that the pti= option > is not just for disabling. Also describe what 'pti=auto' does > and why > * Add a note about the presence of NX in the user portion of the > kernel page tables > * Clarify _additional_ 4k of PGD space > * Add a note about the runtime overhead of PCID without INVPCID > > --- > > From: Dave Hansen <dave.han...@linux.intel.com> > > Add some details about how PTI works, what some of the downsides > are, and how to debug it when things go wrong. > > Also document the kernel parameter: 'nopti'. > > Signed-off-by: Dave Hansen <dave.han...@linux.intel.com> > Reviewed-by: Kees Cook <keesc...@chromium.org> > Cc: Moritz Lipp <moritz.l...@iaik.tugraz.at> > Cc: Daniel Gruss <daniel.gr...@iaik.tugraz.at> > Cc: Michael Schwarz <michael.schw...@iaik.tugraz.at> > Cc: Richard Fellner <richard.fell...@student.tugraz.at> > Cc: Andy Lutomirski <l...@kernel.org> > Cc: Linus Torvalds <torva...@linux-foundation.org> > Cc: Hugh Dickins <hu...@google.com> > Cc: x...@kernel.org > --- > > b/Documentation/admin-guide/kernel-parameters.txt | 21 +- > b/Documentation/x86/pti.txt | 186 > ++++++++++++++++++++++ > 2 files changed, 200 insertions(+), 7 deletions(-) -- ~Randy
