[PATCH 0/3] KVM: VMX: Let userspace set IA32_FEAT_CTL at will

[Sean Christopherson <seanjc@xxxxxxxxxx>]

Fix a bug where KVM requires userspace to set the guest CPUID model
in order to enable features via IA32_FEAT_CTL.

Note, the selftest builds on the vmx_msrs_test from the VMX MSRs series[*],
i.e. it won't apply cleanly on kvm/queue.  

[*] https://lkml.kernel.org/r/20220607213604.3346000-1-seanjc@xxxxxxxxxx

Sean Christopherson (3):
  KVM: VMX: Allow userspace to set all supported FEATURE_CONTROL bits
  KVM: VMX: Move MSR_IA32_FEAT_CTL.LOCKED check into "is valid" helper
  KVM: selftests: Verify userspace can stuff IA32_FEATURE_CONTROL at
    will

 arch/x86/kvm/vmx/vmx.c                        | 43 ++++++++++++++---
 .../selftests/kvm/include/x86_64/processor.h  |  2 +
 .../selftests/kvm/x86_64/vmx_msrs_test.c      | 47 +++++++++++++++++++
 3 files changed, 85 insertions(+), 7 deletions(-)


base-commit: 838fd3e5a7208ee3b95bf73898c135a44a0c589d
-- 
2.36.1.255.ge46751e96f-goog