| commit | 0768f91530ff46683e0b372df14fd79fe8d156e5 | [log] [tgz] |
|---|---|---|
| author | Andi Kleen <ak@linux.intel.com> | Tue Aug 07 15:09:37 2018 -0700 |
| committer | Thomas Gleixner <tglx@linutronix.de> | Wed Aug 08 09:23:44 2018 +0200 |
| tree | 07971e6c9631db7d4afd93ff1f0234c4313ff050 | |
| parent | f22cc87f6c1f771b57c407555cfefd811cdd9507 [diff] |
x86/speculation/l1tf: Make pmd/pud_mknotpresent() invert Some cases in THP like: - MADV_FREE - mprotect - split mark the PMD non present for temporarily to prevent races. The window for an L1TF attack in these contexts is very small, but it wants to be fixed for correctness sake. Use the proper low level functions for pmd/pud_mknotpresent() to address this. Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>