Re: [GIT PULL] KVM: Selftests change for 7.3, part 1

[Paolo Bonzini]

On Wed, Aug 12, 2026 at 11:32 PM Sean Christopherson <seanjc@xxxxxxxxxx> wrote:
>
> This was supposed to be the "main" selftests pull request, but it ended up being
> about half the size of the second pull request.  Yosry's work on the nested
> virtualization infrastructure is by far the most notable thing here.
>
> The following changes since commit a204badd8432f93b7e862e7dac6db0fe3d65f370:
>
>   Merge branch 'kvm-chainsaw' into HEAD (2026-06-25 11:32:09 +0200)
>
> are available in the Git repository at:
>
>   https://github.com/kvm-x86/linux.git tags/kvm-x86-selftests-7.3
>
> for you to fetch changes up to b18ee21055a77eb1fb6070cb3f819cd3372c466e:
>
>   KVM: selftests: Add a test for KVM_CREATE_VM VM type enforcement (2026-07-31 15:47:25 -0700)

Pulled, thanks.

Paolo

> ----------------------------------------------------------------
> KVM selftests changes for 7.3, part 1
>
>  - Clean up nested SVM's handling of GPRs on L2<=>L1 transitions, reuse the
>    functionality for nested VMX, and drop the ucall hack that was fudging
>    around the lack of GPR switching on nVMX.
>
>  - Add a stress test to verify KVM doesn't clobber/drop #PF state, e.g. CR2,
>    across save/restore, including when L2 is active.
>
>  - Add a test to verify KVM_CREATE_VM accepts exactly what is reported by
>    KVM_CAP_VM_TYPES.
>
>  - Misc selftests fixes and cleanups
>
> ----------------------------------------------------------------
> Hemanth Selam (1):
>       KVM: selftests: Add a test for KVM_CREATE_VM VM type enforcement
>
> Sean Christopherson (2):
>       KVM: selftests: Drop superfluous use of pthread_attr_setaffinity_np()
>       KVM: selftests: Randomize pCPU in steal time test
>
> Shivank Sharma (1):
>       KVM: selftests: Fix typos in x86 and riscv tests
>
> Wang Yan (1):
>       KVM: selftests: Fix a spelling error in an xapic_ipi_test comment
>
> Yosry Ahmed (13):
>       KVM: selftests: Use __stringify() instead of custom XSTR() macros
>       KVM: selftests: Fix RAX and RFLAGS VMCB offsets when running L2
>       KVM: selftests: Rework GPR registers switching for SVM (and fix offsets)
>       KVM: selftests: Handle rflags save/restore for SVM in guest_regs
>       KVM: selftests: Reuse GPR switching logic for nVMX
>       KVM: selftests: Drop HORRIFIC_L2_UCALL_CLOBBER_HACK
>       KVM: selftests: Add a blank line before logging assertion failures
>       KVM: selftests: Expose PTE masks to guests as part of an MMU
>       KVM: selftests: Do not intercept #PF by default in nVMX tests
>       KVM: selftests: Add basic stress test for save+restore and #PF handling
>       KVM: selftests: Trigger save+restore randomly in the #PF stress test
>       KVM: selftests: Support running stress save+restore and #PF test in L2
>       KVM: selftests: Trigger L2->L1 exits stress save+restore and #PF test
>
>  tools/testing/selftests/kvm/Makefile.kvm           |   2 +
>  tools/testing/selftests/kvm/include/test_util.h    |   1 +
>  tools/testing/selftests/kvm/include/x86/evmcs.h    |  46 ++--
>  .../testing/selftests/kvm/include/x86/processor.h  |  52 +++-
>  tools/testing/selftests/kvm/include/x86/vmx.h      |  69 +++--
>  tools/testing/selftests/kvm/lib/assert.c           |   2 +-
>  tools/testing/selftests/kvm/lib/x86/processor.c    |  14 +
>  tools/testing/selftests/kvm/lib/x86/svm.c          |  62 +++--
>  tools/testing/selftests/kvm/lib/x86/ucall.c        |  32 +--
>  tools/testing/selftests/kvm/lib/x86/vmx.c          |   2 +-
>  tools/testing/selftests/kvm/riscv/sbi_pmu_test.c   |   4 +-
>  tools/testing/selftests/kvm/steal_time.c           |  15 +-
>  tools/testing/selftests/kvm/vm_types_test.c        |  48 ++++
>  .../selftests/kvm/x86/evmcs_smm_controls_test.c    |   5 +-
>  .../testing/selftests/kvm/x86/fix_hypercall_test.c |   1 -
>  tools/testing/selftests/kvm/x86/hyperv_clock.c     |   4 +-
>  tools/testing/selftests/kvm/x86/hyperv_evmcs.c     |   2 +-
>  .../kvm/x86/save_restore_pf_stress_test.c          | 288 +++++++++++++++++++++
>  tools/testing/selftests/kvm/x86/sev_init2_tests.c  |   4 -
>  tools/testing/selftests/kvm/x86/smm_test.c         |   5 +-
>  .../kvm/x86/vmx_invalid_nested_guest_state.c       |   2 +-
>  tools/testing/selftests/kvm/x86/xapic_ipi_test.c   |   2 +-
>  22 files changed, 502 insertions(+), 160 deletions(-)
>  create mode 100644 tools/testing/selftests/kvm/vm_types_test.c
>  create mode 100644 tools/testing/selftests/kvm/x86/save_restore_pf_stress_test.c
>