kernel/linux.git/tools/testing/selftests/kvm/lib, branch v6.12.80

KVM: selftests: use X86_MEMTYPE_WB instead of VMX_BASIC_MEM_TYPE_WB

2024-11-08T10:57:12+00:00

In 08a7d2525511 ("tools arch x86: Sync the msr-index.h copy with the kernel sources"), VMX_BASIC_MEM_TYPE_WB was removed. Use X86_MEMTYPE_WB instead. Fixes: 08a7d2525511 ("tools arch x86: Sync the msr-index.h copy with the kernel sources") Signed-off-by: John Sperbeck Message-ID: <20241106034031.503291-1-jsperbeck@google.com> Signed-off-by: Paolo Bonzini

Merge tag 'kvm-x86-selftests-6.12' of https://github.com/kvm-x86/linux into HEAD

2024-09-17T15:39:21+00:00

KVM selftests changes for 6.12: - Fix a goof that caused some Hyper-V tests to be skipped when run on bare metal, i.e. NOT in a VM. - Add a regression test for KVM's handling of SHUTDOWN for an SEV-ES guest. - Explicitly include one-off assets in .gitignore. Past Sean was completely wrong about not being able to detect missing .gitignore entries. - Verify userspace single-stepping works when KVM happens to handle a VM-Exit in its fastpath. - Misc cleanups

Merge tag 'kvm-x86-misc-6.12' of https://github.com/kvm-x86/linux into HEAD

2024-09-17T15:38:23+00:00

KVM x86 misc changes for 6.12 - Advertise AVX10.1 to userspace (effectively prep work for the "real" AVX10 functionality that is on the horizon). - Rework common MSR handling code to suppress errors on userspace accesses to unsupported-but-advertised MSRs. This will allow removing (almost?) all of KVM's exemptions for userspace access to MSRs that shouldn't exist based on the vCPU model (the actual cleanup is non-trivial future work). - Rework KVM's handling of x2APIC ICR, again, because AMD (x2AVIC) splits the 64-bit value into the legacy ICR and ICR2 storage, whereas Intel (APICv) stores the entire 64-bit value a the ICR offset. - Fix a bug where KVM would fail to exit to userspace if one was triggered by a fastpath exit handler. - Add fastpath handling of HLT VM-Exit to expedite re-entering the guest when there's already a pending wake event at the time of the exit. - Finally fix the RSM vs. nested VM-Enter WARN by forcing the vCPU out of guest mode prior to signalling SHUTDOWN (architecturally, the SHUTDOWN is supposed to hit L1, not L2).

Merge tag 'kvm-s390-next-6.12-1' of https://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into HEAD

2024-09-17T15:37:03+00:00

* New ucontrol selftest * Inline assembly touchups

KVM: arm64: selftests: Ensure pending interrupts are handled in arch_timer test

2024-08-30T08:03:45+00:00

Break up the asm instructions poking daifclr and daifset to handle interrupts. R_RBZYL specifies pending interrupts will be handle after context synchronization events such as an ISB. Introduce a function wrapper for the WFI instruction. Signed-off-by: Colton Lewis Link: https://lore.kernel.org/r/20240823175836.2798235-2-coltonlewis@google.com Signed-off-by: Marc Zyngier

KVM: selftests: Always unlink memory regions when deleting (VM free)

2024-08-30T02:01:42+00:00

Unlink memory regions when freeing a VM, even though it's not strictly necessary since all tracking structures are freed soon after. The time spent deleting entries is negligible, and not unlinking entries is confusing, e.g. it's easy to overlook that the tree structures are freed by the caller. Link: https://lore.kernel.org/r/20240802201429.338412-1-seanjc@google.com Signed-off-by: Sean Christopherson

KVM: selftests: Remove unused kvm_memcmp_hva_gva()

2024-08-30T02:01:22+00:00

Remove sefltests' kvm_memcmp_hva_gva(), which has literally never had a single user since it was introduced by commit 783e9e51266eb ("kvm: selftests: add API testing infrastructure"). Link: https://lore.kernel.org/r/20240802200853.336512-1-seanjc@google.com Signed-off-by: Sean Christopherson

KVM: selftests: Report unhandled exceptions on x86 as regular guest asserts

2024-08-29T23:25:06+00:00

Now that selftests support printf() in the guest, report unexpected exceptions via the regular assertion framework. Exceptions were special cased purely to provide a better error message. Convert only x86 for now, as it's low-hanging fruit (already formats the assertion in the guest), and converting x86 will allow adding asserts in x86 library code without needing to update multiple tests. Once all other architectures are converted, this will allow moving the reporting to common code, which will in turn allow adding asserts in common library code, and will also allow removing UCALL_UNHANDLED. Link: https://lore.kernel.org/r/20240719235107.3023592-6-seanjc@google.com Signed-off-by: Sean Christopherson

KVM: selftests: Re-enable hyperv_evmcs/hyperv_svm_test on bare metal

2024-08-22T19:14:42+00:00

KVM_CAP_HYPERV_DIRECT_TLBFLUSH is only reported when KVM runs on top of Hyper-V and hyperv_evmcs/hyperv_svm_test don't need that, these tests check that the feature is properly emulated for Hyper-V on KVM guests. There's no corresponding CAP for that, the feature is reported in KVM_GET_SUPPORTED_HV_CPUID. Hyper-V specific CPUIDs are not reported by KVM_GET_SUPPORTED_CPUID, implement dedicated kvm_hv_cpu_has() helper to do the job. Fixes: 6dac1195181c ("KVM: selftests: Make Hyper-V tests explicitly require KVM Hyper-V support") Signed-off-by: Vitaly Kuznetsov Link: https://lore.kernel.org/r/20240816130139.286246-3-vkuznets@redhat.com Signed-off-by: Sean Christopherson

KVM: selftests: Move Hyper-V specific functions out of processor.c

2024-08-22T19:14:42+00:00

Since there is 'hyperv.c' for Hyper-V specific functions already, move Hyper-V specific functions out of processor.c there. No functional change intended. Signed-off-by: Vitaly Kuznetsov Link: https://lore.kernel.org/r/20240816130139.286246-2-vkuznets@redhat.com Signed-off-by: Sean Christopherson