[PATCH 0/1] [Hardy] SRU: Disable 4MB page tables for Atom, work around errata AAE44

[Colin King]

From: Colin Ian King <colin.king at canonical.com>

BugLink: https://bugs.launchpad.net/bugs/523112

SRU Justification:

Impact: Without this patch Intel(R) Atom (TM) CPUs can sometimes
seemingly randomly get oopses on legitimate executable pages.
This only occurs when splitting large 4MB pages into 4MB pages
so this patch disables 4MB pages for this class of processor.

Fix: Detect processor type 0x1C and disable 4MB pages.

Colin Ian King (1):
  UBUNTU: Disable 4MB page tables for Atom, work around errata AAE44

 arch/x86/kernel/cpu/bugs.c |   17 +++++++++++++++++
 1 files changed, 17 insertions(+), 0 deletions(-)