[GIT PULL] KVM: selftests changes for 6.16

[Sean Christopherson <seanjc@google.com>]

Add support for SNP and MGRLU in selftests, and add a test verify fastops
(which was easier than walking PeterZ through getting a guest running with
unrestricted guest disabled :-D).

The following changes since commit 45eb29140e68ffe8e93a5471006858a018480a45:

  Merge branch 'kvm-fixes-6.15-rc4' into HEAD (2025-04-24 13:39:34 -0400)

are available in the Git repository at:

  https://github.com/kvm-x86/linux.git tags/kvm-x86-selftests-6.16

for you to fetch changes up to d166453ebd2925edde24872d9b8ac60065eb0618:

  KVM: selftests: access_tracking_perf_test: Use MGLRU for access tracking (2025-05-16 12:58:21 -0700)

----------------------------------------------------------------
KVM selftests changes for 6.16:

 - Add support for SNP to the various SEV selftests.

 - Add a selftest to verify fastops instructions via forced emulation.

 - Add MGLRU support to the access tracking perf test.

----------------------------------------------------------------
James Houghton (3):
      cgroup: selftests: Move cgroup_util into its own library
      KVM: selftests: Build and link selftests/cgroup/lib into KVM selftests
      KVM: selftests: access_tracking_perf_test: Use MGLRU for access tracking

Maxim Levitsky (1):
      KVM: selftests: access_tracking_perf_test: Add option to skip the sanity check

Pratik R. Sampat (9):
      KVM: selftests: SEV-SNP test for KVM_SEV_INIT2
      KVM: selftests: Add vmgexit helper
      KVM: selftests: Add SMT control state helper
      KVM: selftests: Replace assert() with TEST_ASSERT_EQ()
      KVM: selftests: Introduce SEV VM type check
      KVM: selftests: Add library support for interacting with SNP
      KVM: selftests: Force GUEST_MEMFD flag for SNP VM type
      KVM: selftests: Decouple SEV policy from VM type
      KVM: selftests: Add a basic SEV-SNP smoke test

Sean Christopherson (4):
      KVM: selftests: Add a test for x86's fastops emulation
      KVM: selftests: Extract guts of THP accessor to standalone sysfs helpers
      cgroup: selftests: Move memcontrol specific helpers out of common cgroup_util.c
      cgroup: selftests: Add API to find root of specific controller

 arch/x86/include/uapi/asm/kvm.h                    |   1 +
 tools/arch/x86/include/uapi/asm/kvm.h              |   1 +
 tools/testing/selftests/cgroup/Makefile            |  21 +-
 .../selftests/cgroup/{ => lib}/cgroup_util.c       | 118 ++-----
 .../cgroup/{ => lib/include}/cgroup_util.h         |  13 +-
 tools/testing/selftests/cgroup/lib/libcgroup.mk    |  19 +
 tools/testing/selftests/cgroup/test_memcontrol.c   |  78 +++++
 tools/testing/selftests/kvm/Makefile.kvm           |   5 +-
 .../selftests/kvm/access_tracking_perf_test.c      | 281 +++++++++++++--
 tools/testing/selftests/kvm/include/kvm_util.h     |  35 ++
 tools/testing/selftests/kvm/include/lru_gen_util.h |  51 +++
 tools/testing/selftests/kvm/include/test_util.h    |   1 +
 .../testing/selftests/kvm/include/x86/processor.h  |   1 +
 tools/testing/selftests/kvm/include/x86/sev.h      |  53 ++-
 tools/testing/selftests/kvm/lib/kvm_util.c         |  21 +-
 tools/testing/selftests/kvm/lib/lru_gen_util.c     | 387 +++++++++++++++++++++
 tools/testing/selftests/kvm/lib/test_util.c        |  42 ++-
 tools/testing/selftests/kvm/lib/x86/processor.c    |   4 +-
 tools/testing/selftests/kvm/lib/x86/sev.c          |  76 +++-
 tools/testing/selftests/kvm/x86/fastops_test.c     | 165 +++++++++
 tools/testing/selftests/kvm/x86/hyperv_cpuid.c     |  21 +-
 tools/testing/selftests/kvm/x86/sev_init2_tests.c  |  13 +
 tools/testing/selftests/kvm/x86/sev_smoke_test.c   |  75 ++--
 23 files changed, 1273 insertions(+), 209 deletions(-)
 rename tools/testing/selftests/cgroup/{ => lib}/cgroup_util.c (88%)
 rename tools/testing/selftests/cgroup/{ => lib/include}/cgroup_util.h (91%)
 create mode 100644 tools/testing/selftests/cgroup/lib/libcgroup.mk
 create mode 100644 tools/testing/selftests/kvm/include/lru_gen_util.h
 create mode 100644 tools/testing/selftests/kvm/lib/lru_gen_util.c
 create mode 100644 tools/testing/selftests/kvm/x86/fastops_test.c