Vitaly's series to adjust KVM's emulation of VMPTRLD/VMPTRST when the vCPU
has an active eVMCS to match Hyper-V, and more importantly to not put the
vCPU into an infinite loop.
The patches from Vitaly remain the same from v2. The churn I piled on top
came from wanting to use KVM_ASM_SAFE() for more VMX instructions to verify
the RFLAGS bug+fix Sashiko pointed out, and I lack impulse control when it
comes to cleanups.
v3:
- See above.
v2:
- https://lore.kernel.org/all/20260818165258.2613603-1-vkuznets@redhat.com
- Fix build when !CONFIG_KVM_HYPERV [Sashiko]
- Drop now-unneeded evmcs_vmptrst() [Sashiko]
- Avoid hardcoding VMPTRLD insn length in hyperv_evmcs [Sashiko], use
KVM_ASM_SAFE framework instead [Sean]
v1: https://lore.kernel.org/all/20260814162221.2144473-1-vkuznets@redhat.com
Sean Christopherson (9):
KVM: selftests: Don't clobber RFLAGS in happy path of __KVM_ASM_SAFE()
KVM: selftests: Assert success in vmptrst(), kill off vmptrstz()
KVM: selftests: Always assert that vmxon() and
prepare_for_vmx_operation() succeed
KVM: selftests: Always assert that vmclear() succeeds
KVM: selftests: Always assert that vmptrld() succeeds
KVM: selftests: Drop useless return code from load_vmcs()
KVM: selftests: Add macros to handle simple VMX instructions
KVM: selftests: Dedup assembly code for VMLAUNCH and VMRESUME
KVM: selftests: Add and use double-underscore versions of vmlaunch()
and vmresume()
Vitaly Kuznetsov (4):
KVM: nVMX: Make VMPTRLD result in #UD when eVMCS is used
KVM: nVMX: Make VMPTRST return eVMCS GPA when it is used
KVM: selftests: Adapt to the updated VMPTRST behavior when eVMCS is
used
KVM: selftests: Check VMPTRLD with active eVMCS
arch/x86/kvm/vmx/nested.c | 24 ++-
.../testing/selftests/kvm/include/x86/evmcs.h | 8 -
.../selftests/kvm/include/x86/processor.h | 2 +-
tools/testing/selftests/kvm/include/x86/vmx.h | 173 +++++++-----------
.../testing/selftests/kvm/lib/x86/memstress.c | 6 +-
tools/testing/selftests/kvm/lib/x86/vmx.c | 20 +-
.../selftests/kvm/x86/aperfmperf_test.c | 6 +-
.../kvm/x86/evmcs_smm_controls_test.c | 4 +-
.../testing/selftests/kvm/x86/hyperv_evmcs.c | 57 +++---
.../selftests/kvm/x86/kvm_buslock_test.c | 6 +-
.../selftests/kvm/x86/nested_close_kvm_test.c | 6 +-
.../selftests/kvm/x86/nested_dirty_log_test.c | 6 +-
.../selftests/kvm/x86/nested_emulation_test.c | 6 +-
.../kvm/x86/nested_exceptions_test.c | 6 +-
.../kvm/x86/nested_invalid_cr3_test.c | 8 +-
.../selftests/kvm/x86/nested_tdp_fault_test.c | 6 +-
.../kvm/x86/nested_tsc_adjust_test.c | 6 +-
.../kvm/x86/nested_tsc_scaling_test.c | 6 +-
.../kvm/x86/save_restore_pf_stress_test.c | 8 +-
tools/testing/selftests/kvm/x86/smm_test.c | 4 +-
tools/testing/selftests/kvm/x86/state_test.c | 42 ++---
.../kvm/x86/triple_fault_event_test.c | 6 +-
.../selftests/kvm/x86/vmx_apic_access_test.c | 8 +-
.../kvm/x86/vmx_apicv_updates_test.c | 8 +-
.../kvm/x86/vmx_invalid_nested_guest_state.c | 6 +-
.../kvm/x86/vmx_nested_la57_state_test.c | 6 +-
.../kvm/x86/vmx_preemption_timer_test.c | 10 +-
27 files changed, 214 insertions(+), 240 deletions(-)
base-commit: 76671054f9a1ff6abb976583cd8da37650acdc97
--
2.55.0.887.g758fc8c411-goog