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(parent: bc2d8d2) | patch
x86/speculation/l1tf: Invert all not present mappings
authorAndi Kleen <ak@linux.intel.com>
Tue, 7 Aug 2018 22:09:36 +0000 (15:09 -0700)
committerThomas Gleixner <tglx@linutronix.de>
Wed, 8 Aug 2018 07:23:43 +0000 (09:23 +0200)
commitf22cc87f6c1f771b57c407555cfefd811cdd9507
treed48bf57d7816867286ff780f2f5d78ef00472fe3tree | snapshot
parentbc2d8d262cba5736332cbc866acb11b1c5748aa9commit | diff
x86/speculation/l1tf: Invert all not present mappings

For kernel mappings PAGE_PROTNONE is not necessarily set for a non present
mapping, but the inversion logic explicitely checks for !PRESENT and
PROT_NONE.

Remove the PROT_NONE check and make the inversion unconditional for all not
present mappings.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
arch/x86/include/asm/pgtable-invert.h diff | blob | history