[PATCH 0/7] KVM: x86: EFER validity fixes and cleanups

[Yosry Ahmed <yosry@kernel.org>]

A couple of bug fixes for EFER validity checks, namely not doing any on
KVM_SET_SREGS*, and incorrectly preserving EFER.SVME and EFER.LMSLE
state after module unload+load.

The rest of the series reworks EFER supported bits and moves them into
kvm_caps, ensuring they are always reinitialized on vendor module init.
The final patch adds test cases to set_sregs that catch the bug fixed by
patch 1.

Yosry Ahmed (7):
  KVM: x86: Check EFER validity on KVM_SET_SREGS*
  KVM: SVM: Disallow EFER.SVME and EFER.LSMLE if nested is disabled
  KVM: x86: Disallow EFER.LME and EFER.LMA if long mode is not supported
  KVM: x86: Add a per-vendor callback to setup EFER caps
  KVM: x86: Reverse the polarity of efer_reserved_bits
  KVM: x86: Move supported EFER bits to kvm_caps
  KVM: selftests: Extend set_sregs test to cover EFER

 arch/x86/include/asm/kvm-x86-ops.h            |  1 +
 arch/x86/include/asm/kvm_host.h               |  3 +
 arch/x86/kvm/msrs.c                           | 21 +----
 arch/x86/kvm/msrs.h                           |  1 +
 arch/x86/kvm/regs.c                           |  3 +-
 arch/x86/kvm/svm/svm.c                        | 14 +++-
 arch/x86/kvm/x86.c                            | 18 ++--
 .../selftests/kvm/include/x86/processor.h     |  2 +
 .../selftests/kvm/x86/set_sregs_test.c        | 83 ++++++++++++++-----
 9 files changed, 96 insertions(+), 50 deletions(-)


base-commit: 50406d35f5635e1cc523e61409d57e851b5f5df8
-- 
2.55.0.rc0.799.gd6f94ed593-goog