[PATCH entry v2 0/6] x86/entry: Fixes and cleanups

[Andy Lutomirski]

These are in priority order.  Patch 1 could be folded into the patch
it fixes.  The selftests improve my confidence in the correctness of
the whole pile.  The next two patches fix IDTENTRY miswiring.  The
last two are optional and could easily wait until the next merge
window.

Andy Lutomirski (6):
  x86/entry/compat: Clear RAX high bits on Xen PV SYSENTER
  x86/entry, selftests: Further improve user entry sanity checks
  x86/entry/xen: Route #DB correctly on Xen PV
  x86/entry/32: Fix #MC and #DB wiring on x86_32
  x86/ldt: Disable 16-bit segments on Xen PV
  x86/entry: Rename idtentry_enter/exit_cond_rcu() to
    idtentry_enter/exit()

 arch/x86/entry/common.c                  | 69 +++++++++++++++-------
 arch/x86/entry/entry_64_compat.S         | 19 +++---
 arch/x86/include/asm/idtentry.h          | 75 +++++++++++-------------
 arch/x86/kernel/cpu/mce/core.c           |  4 +-
 arch/x86/kernel/kvm.c                    |  6 +-
 arch/x86/kernel/ldt.c                    | 35 ++++++++++-
 arch/x86/kernel/traps.c                  | 20 +++++--
 arch/x86/mm/fault.c                      |  6 +-
 arch/x86/xen/enlighten_pv.c              | 28 +++++++--
 arch/x86/xen/xen-asm_64.S                |  5 +-
 kernel/time/tick-sched.c                 |  1 +
 tools/testing/selftests/x86/syscall_nt.c | 11 ++++
 12 files changed, 189 insertions(+), 90 deletions(-)

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2.25.4