[PATCH 00/42] KVM: selftests: Overhaul Part II - CPUID

[Sean Christopherson]

Rework (x86) KVM selftests' handling of CPUID to track CPUID on a per-vCPU
basis, and add X86_FEATURE_* / CPUID support in the style of KVM-Unit-Tests,
e.g. add kvm_cpu_has(), vcpu_{clear,set}_cpuid_feature(), this_cpu_has(),
etc...

The two main goals are to simplify checking or modifying CPUID-based
features, and to eliminate the absolutely awful behavior of modifying the
global "cpuid" that is cached by kvm_get_supported_cpuid().

This builds on the selftests overhaul[*].  Build tested on all
architectures, all tests except AMX and SEV run on x86.

https://lore.kernel.org/all/20220603004331.1523888-1-seanjc@xxxxxxxxxx

Sean Christopherson (42):
  KVM: selftests: Set KVM's supported CPUID as vCPU's CPUID during
    recreate
  KVM: sefltests: Use CPUID_XSAVE and CPUID_OSXAVE instead of
    X86_FEATURE_*
  KVM: selftests: Add framework to query KVM CPUID bits
  KVM: selftests: Use kvm_cpu_has() in the SEV migration test
  KVM: selftests: Use kvm_cpu_has() for nested SVM checks
  KVM: selftests: Use kvm_cpu_has() for nested VMX checks
  KVM: selftests: Use kvm_cpu_has() to query PDCM in PMU selftest
  KVM: selftests: Drop redundant vcpu_set_cpuid() from PMU selftest
  KVM: selftests: Use kvm_cpu_has() for XSAVES in XSS MSR test
  KVM: selftests: Check for _both_ XTILE data and cfg in AMX test
  KVM: selftests: Use kvm_cpu_has() in AMX test
  KVM: selftests: Use kvm_cpu_has() for XSAVE in cr4_cpuid_sync_test
  KVM: selftests: Remove the obsolete/dead MMU role test
  KVM: selftests: Use kvm_cpu_has() for KVM's PV steal time
  KVM: selftests: Use kvm_cpu_has() for nSVM soft INT injection test
  KVM: selftests: Verify that kvm_cpuid2.entries layout is unchanged by
    KVM
  KVM: selftests: Split out kvm_cpuid2_size() from allocate_kvm_cpuid2()
  KVM: selftests: Cache CPUID in struct kvm_vcpu
  KVM: selftests: Don't use a static local in
    vcpu_get_supported_hv_cpuid()
  KVM: selftests: Rename and tweak get_cpuid() to get_cpuid_entry()
  KVM: selftests: Use get_cpuid_entry() in
    kvm_get_supported_cpuid_index()
  KVM: selftests: Add helpers to get and modify a vCPU's CPUID entries
  KVM: selftests: Use vm->pa_bits to generate reserved PA bits
  KVM: selftests: Add and use helper to set vCPU's CPUID maxphyaddr
  KVM: selftests: Use vcpu_get_cpuid_entry() in PV features test (sort
    of)
  KVM: selftests: Use vCPU's CPUID directly in Hyper-V test
  KVM: selftests: Use vcpu_get_cpuid_entry() in CPUID test
  KVM: selftests: Use vcpu_{set,clear}_cpuid_feature() in nVMX state
    test
  KVM: selftests: Use vcpu_clear_cpuid_feature() to clear x2APIC
  KVM: selftests: Make get_supported_cpuid() returns "const"
  KVM: selftests: Set input function/index in raw CPUID helper(s)
  KVM: selftests: Add this_cpu_has() to query X86_FEATURE_* via cpuid()
  KVM: selftests: Use this_cpu_has() in CR4/CPUID sync test
  KVM: selftests: Use this_cpu_has() to detect SVM support in L1
  KVM: selftests: Drop unnecessary use of
    kvm_get_supported_cpuid_index()
  KVM: selftests: Rename kvm_get_supported_cpuid_index() to
    __..._entry()
  KVM: selftests: Inline "get max CPUID leaf" helpers
  KVM: selftests: Check KVM's supported CPUID, not host CPUID, for XFD
  KVM: selftests: Skip AMX test if ARCH_REQ_XCOMP_GUEST_PERM isn't
    supported
  KVM: selftests: Clean up requirements for XFD-aware XSAVE features
  KVM: selftests: Use the common cpuid() helper in
    cpu_vendor_string_is()
  KVM: selftests: Drop unused SVM_CPUID_FUNC macro

 tools/testing/selftests/kvm/.gitignore        |   1 -
 tools/testing/selftests/kvm/Makefile          |   1 -
 .../selftests/kvm/include/kvm_util_base.h     |  14 +
 .../selftests/kvm/include/x86_64/processor.h  | 297 +++++++++++++++---
 .../selftests/kvm/include/x86_64/svm.h        |   2 -
 .../selftests/kvm/include/x86_64/svm_util.h   |  15 -
 .../selftests/kvm/include/x86_64/vmx.h        |   3 -
 tools/testing/selftests/kvm/lib/kvm_util.c    |  17 +-
 .../selftests/kvm/lib/x86_64/processor.c      | 289 +++++++----------
 tools/testing/selftests/kvm/lib/x86_64/svm.c  |  13 -
 tools/testing/selftests/kvm/lib/x86_64/vmx.c  |  12 -
 tools/testing/selftests/kvm/steal_time.c      |   4 +-
 tools/testing/selftests/kvm/x86_64/amx_test.c |  48 +--
 .../testing/selftests/kvm/x86_64/cpuid_test.c |  89 +++---
 .../kvm/x86_64/cr4_cpuid_sync_test.c          |  21 +-
 .../kvm/x86_64/emulator_error_test.c          |  10 +-
 .../testing/selftests/kvm/x86_64/evmcs_test.c |   2 +-
 .../selftests/kvm/x86_64/hyperv_cpuid.c       |  14 +-
 .../selftests/kvm/x86_64/hyperv_features.c    | 126 ++++----
 .../selftests/kvm/x86_64/hyperv_svm_test.c    |   2 +-
 .../selftests/kvm/x86_64/kvm_pv_test.c        |  14 +-
 .../selftests/kvm/x86_64/mmu_role_test.c      | 137 --------
 .../kvm/x86_64/pmu_event_filter_test.c        |  14 +-
 .../selftests/kvm/x86_64/set_sregs_test.c     |  28 +-
 .../selftests/kvm/x86_64/sev_migrate_tests.c  |  13 +-
 tools/testing/selftests/kvm/x86_64/smm_test.c |   9 +-
 .../testing/selftests/kvm/x86_64/state_test.c |   7 +-
 .../selftests/kvm/x86_64/svm_int_ctl_test.c   |   2 +-
 .../kvm/x86_64/svm_nested_soft_inject_test.c  |  10 +-
 .../selftests/kvm/x86_64/svm_vmcall_test.c    |   2 +-
 .../kvm/x86_64/triple_fault_event_test.c      |   2 +-
 .../kvm/x86_64/vmx_apic_access_test.c         |   2 +-
 .../kvm/x86_64/vmx_close_while_nested_test.c  |   2 +-
 .../selftests/kvm/x86_64/vmx_dirty_log_test.c |   2 +-
 .../x86_64/vmx_invalid_nested_guest_state.c   |   2 +-
 .../kvm/x86_64/vmx_nested_tsc_scaling_test.c  |   2 +-
 .../selftests/kvm/x86_64/vmx_pmu_caps_test.c  |  14 +-
 .../kvm/x86_64/vmx_preemption_timer_test.c    |   4 +-
 .../kvm/x86_64/vmx_set_nested_state_test.c    |  22 +-
 .../kvm/x86_64/vmx_tsc_adjust_test.c          |   2 +-
 .../selftests/kvm/x86_64/xapic_state_test.c   |  10 +-
 .../selftests/kvm/x86_64/xss_msr_test.c       |   8 +-
 42 files changed, 561 insertions(+), 727 deletions(-)
 delete mode 100644 tools/testing/selftests/kvm/x86_64/mmu_role_test.c


base-commit: fa72038b1752a8f9b7ac57b1351d729239e6b6d8
-- 
2.36.1.255.ge46751e96f-goog