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 <[email protected]> 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 <[email protected]> > > 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 <[email protected]> > Reviewed-by: Kees Cook <[email protected]> > Cc: Moritz Lipp <[email protected]> > Cc: Daniel Gruss <[email protected]> > Cc: Michael Schwarz <[email protected]> > Cc: Richard Fellner <[email protected]> > Cc: Andy Lutomirski <[email protected]> > Cc: Linus Torvalds <[email protected]> > Cc: Hugh Dickins <[email protected]> > Cc: [email protected] > --- > > b/Documentation/admin-guide/kernel-parameters.txt | 21 +- > b/Documentation/x86/pti.txt | 186 > ++++++++++++++++++++++ > 2 files changed, 200 insertions(+), 7 deletions(-) -- ~Randy
