[SRU][Trusty][PATCH 0/7] Follow-up fixes for CVE-2018-3620/CVE-2018-3646

[Juerg Haefliger]

This patch series reenables NUMA balancing by disentangling _PAGE_NUMA from
_PAGE_PROTNONE. It also fixes the remap_file_pages syscall to invert the PTE
offset bits. This was an oversight since that code is no longer present in the
Xenial kernel. Note that *not* inverting the offset bits doesn't cause any
functional problems but simply doesn't protect swapped out entries against
L1TF.

I'm still trying to get access to a NUMA system to do some testing to
verify that NUMA is working as expected (whatever that means).

Compile-tested all supported architectures and verified that tomcat7
(java) starts succesfully.

Signed-off-by: Juerg Haefliger <juergh at canonical.com>


Aneesh Kumar K.V (1):
  mm: Move change_prot_numa outside CONFIG_ARCH_USES_NUMA_PROT_NONE

Cyrill Gorcunov (1):
  mm: x86 pgtable: drop unneeded preprocessor ifdef

Hugh Dickins (1):
  x86,mm: fix pte_special versus pte_numa

Juerg Haefliger (2):
  Revert "UBUNTU: [Config] disable NUMA_BALANCING"
  UBUNTU: SAUCE: x86/fremap: Invert the offset when converting to/from a
    PTE

Mel Gorman (2):
  x86: require x86-64 for automatic NUMA balancing
  x86: define _PAGE_NUMA by reusing software bits on the PMD and PTE
    levels

 arch/x86/Kconfig                          |  2 +-
 arch/x86/include/asm/pgtable-2level.h     | 10 ----
 arch/x86/include/asm/pgtable.h            | 20 +++++--
 arch/x86/include/asm/pgtable_64.h         | 46 ++++++++++++----
 arch/x86/include/asm/pgtable_types.h      | 66 ++++++++++++-----------
 arch/x86/mm/pageattr-test.c               |  2 +-
 debian.master/config/config.common.ubuntu |  4 +-
 include/asm-generic/pgtable.h             |  8 ++-
 include/linux/mm.h                        |  2 +-
 include/linux/swapops.h                   |  2 +-
 mm/fremap.c                               |  6 +++
 mm/memory.c                               | 10 ++--
 mm/mempolicy.c                            |  5 +-
 13 files changed, 112 insertions(+), 71 deletions(-)

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2.17.1