[GIT PULL] KVM: Selftests changes for 7.1

[Sean Christopherson]

Add Hygon support, fix a related bug in the MSR test, and add MADV_COLLAPSE
regression test for guest_memfd.

I'm also going to post patches and send a pull request to convert selftests to
kernel-style u{8,16,32,64} types after you merge all initial arch pulls.
Please yell at me if you don't see anything on that front by ~Wednesday.

The following changes since commit 11439c4635edd669ae435eec308f4ab8a0804808:

  Linux 7.0-rc2 (2026-03-01 15:39:31 -0800)

are available in the Git repository at:

  https://github.com/kvm-x86/linux.git tags/kvm-x86-selftests-7.1

for you to fetch changes up to 9830209b4ae8c8eecae7e6af271cebf1e1285142:

  KVM: selftests: Test MADV_COLLAPSE on guest_memfd (2026-03-04 14:57:27 -0800)

----------------------------------------------------------------
KVM selftests changes for 7.1

 - Add support for Hygon CPUs in KVM selftests.

 - Fix a bug in the MSR test where it would get false failures on AMD/Hygon
   CPUs with exactly one of RDPID or RDTSCP.

 - Add an MADV_COLLAPSE testcase for guest_memfd as a regression test for a
   bug where the kernel would attempt to collapse guest_memfd folios against
   KVM's will.

----------------------------------------------------------------
Ackerley Tng (2):
      KVM: selftests: Wrap madvise() to assert success
      KVM: selftests: Test MADV_COLLAPSE on guest_memfd

Sean Christopherson (1):
      KVM: selftests: Fix reserved value WRMSR testcase for multi-feature MSRs

Zhiquan Li (3):
      KVM: selftests: Add CPU vendor detection for Hygon
      KVM: selftests: Add a flag to identify AMD compatible test cases
      KVM: selftests: Allow the PMU event filter test for Hygon

 tools/testing/selftests/kvm/guest_memfd_test.c     | 70 +++++++++++++++++++++-
 tools/testing/selftests/kvm/include/kvm_syscalls.h |  1 +
 .../testing/selftests/kvm/include/x86/processor.h  |  7 +++
 tools/testing/selftests/kvm/lib/x86/processor.c    | 15 +++--
 .../testing/selftests/kvm/x86/fix_hypercall_test.c |  2 +-
 tools/testing/selftests/kvm/x86/msrs_test.c        |  4 +-
 .../selftests/kvm/x86/pmu_event_filter_test.c      |  3 +-
 tools/testing/selftests/kvm/x86/xapic_state_test.c |  2 +-
 8 files changed, 92 insertions(+), 12 deletions(-)