[PATCH 0/3] PTI for x86-32 Fixes

[Joerg Roedel]

Hi,

here is a small patch-set to fix two small issues in the
PTI implementation for 32 bit x86. The issues are:

        1) Fix the 32 bit PCID check. I used the wrong
           operator there and this caused false-positive
           warnings.

        2) The other two patches make sure the init-hole is
           not mapped into the user page-table. It is the
           32 bit counterpart to commit

           c40a56a7818c ('x86/mm/init: Remove freed kernel image areas from 
alias mapping')

           for the 64 bit PTI implementation.

I tested that no-PAE, PAE and 64 bit kernel all boot and
have correct user page-tables with identical global mappings
between user and kernel.

Regards,

        Joerg

Joerg Roedel (3):
  x86/mm/pti: Fix 32 bit PCID check
  x86/mm/pti: Don't clear permissions in pti_clone_pmd()
  x86/mm/pti: Clone kernel-image on PTE level for 32 bit

 arch/x86/mm/pti.c | 143 ++++++++++++++++++++++++++++++++++++++----------------
 1 file changed, 100 insertions(+), 43 deletions(-)

-- 
2.7.4