[SRU][Bionic][ 0/6] Follow-up fixes for CVE-2017-5715 (Spectre v2) for s390x

[Khalid Elmously]

Patches requested by IBM for Spectre v2.

Note that the 3rd patch ("KVM: s390: define GISA format-0") wasn't actually requested but is needed to avoid a compile failure in patch #4.

Build-tested for s390x


Christian Borntraeger (2):
  KVM: s390: implement CPU model only facilities
  KVM: s390: add etoken support for guests

Martin Schwidefsky (3):
  s390: detect etoken facility
  s390/lib: use expoline for all bcr instructions
  s390: fix br_r1_trampoline for machines without exrl

Michael Mueller (1):
  KVM: s390: define GISA format-0 data structure

 arch/s390/include/asm/kvm_host.h | 24 ++++++++++--
 arch/s390/include/uapi/asm/kvm.h |  5 ++-
 arch/s390/kernel/nospec-branch.c | 12 +++++-
 arch/s390/kernel/nospec-sysfs.c  |  2 +
 arch/s390/kvm/kvm-s390.c         | 67 ++++++++++++++++++++++----------
 arch/s390/kvm/kvm-s390.h         |  2 -
 arch/s390/kvm/vsie.c             |  9 ++++-
 arch/s390/lib/mem.S              | 16 +++++---
 arch/s390/net/bpf_jit_comp.c     |  2 -
 arch/s390/tools/gen_facilities.c | 23 ++++++++++-
 10 files changed, 122 insertions(+), 40 deletions(-)

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2.17.1