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Subject: [PATCH v4 00/16] KVM: selftests: "tree" wide overhauls
From: Sean Christopherson <seanjc@google.com>
To: Marc Zyngier <maz@kernel.org>, Oliver Upton <oliver.upton@linux.dev>,
Anup Patel <anup@brainfault.org>, Paul Walmsley <paul.walmsley@sifive.com>,
Palmer Dabbelt <palmer@dabbelt.com>, Albert Ou <aou@eecs.berkeley.edu>,
Paolo Bonzini <pbonzini@redhat.com>,
Christian Borntraeger <borntraeger@linux.ibm.com>,
Janosch Frank <frankja@linux.ibm.com>,
Claudio Imbrenda <imbrenda@linux.ibm.com>,
Sean Christopherson <seanjc@google.com>
Cc: linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev,
kvm@vger.kernel.org, kvm-riscv@lists.infradead.org,
linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org,
Andrew Jones <ajones@ventanamicro.com>,
James Houghton <jthoughton@google.com>,
Muhammad Usama Anjum <usama.anjum@collabora.com>
Content-Type: text/plain; charset="UTF-8"
|
| Series |
KVM: selftests: "tree" wide overhauls
|
expand
|
Two separate series (mmu_stress_test[1] and $ARCH[2]), posted as one to avoid unpleasant conflicts, and because I hope to land both in kvm/next shortly after 6.12-rc1 since they impact all of KVM selftests. mmu_stress_test --------------- Convert the max_guest_memory_test into a more generic mmu_stress_test. The basic gist of the "conversion" is to have the test do mprotect() on guest memory while vCPUs are accessing said memory, e.g. to verify KVM and mmu_notifiers are working as intended. The original plan was that patch 3 would be a single patch, but things snowballed in order to rework vcpu_get_reg() to return a value instead of using an out-param. Having to define a variable just to bump the program counter on arm64 annoyed me. $ARCH ----- Play nice with treewrite builds of unsupported architectures, e.g. arm (32-bit), as KVM selftests' Makefile doesn't do anything to ensure the target architecture is actually one KVM selftests supports. The last two patches are opportunistic changes (since the above Makefile change will generate conflicts everywhere) to switch to using $(ARCH) instead of the target triple for arch specific directories, e.g. arm64 instead of aarch64, mainly so as not to be different from the rest of the kernel. Compile tested on all architectures, runtime tested on x86 and arm64. v4: - Rebase and squash the series. - Exclude Makefile.kvm from .gitignore. [kernel test bot] v3 (of mmu_stress_test): - Rebased onto v6.12-rc2. - Disable strict aliasing to fix the PMCR snafu. - Collect reviews. [Drew] - Minor changelog fixes. [Drew] - Include ucall_common.h to prep for RISC-V. [Drew] v2: - Rebase onto kvm/next. - Add the aforementioned vcpu_get_reg() changes/disaster. - Actually add arm64 support for the fancy mprotect() testcase (I did this before v1, but managed to forget to include the changes when posting). - Emit "mov %rax, (%rax)" on x86. [James] - Add a comment to explain the fancy mprotect() vs. vCPUs logic. - Drop the KVM x86 patches (applied and/or will be handled separately). v1: https://lore.kernel.org/all/20240809194335.1726916-1-seanjc@google.com [1] https://lore.kernel.org/all/20241009154953.1073471-1-seanjc@google.com [2] https://lore.kernel.org/all/20240826190116.145945-1-seanjc@google.com Sean Christopherson (16): KVM: Move KVM_REG_SIZE() definition to common uAPI header KVM: selftests: Return a value from vcpu_get_reg() instead of using an out-param KVM: selftests: Assert that vcpu_{g,s}et_reg() won't truncate KVM: selftests: Check for a potential unhandled exception iff KVM_RUN succeeded KVM: selftests: Rename max_guest_memory_test to mmu_stress_test KVM: selftests: Only muck with SREGS on x86 in mmu_stress_test KVM: selftests: Compute number of extra pages needed in mmu_stress_test KVM: sefltests: Explicitly include ucall_common.h in mmu_stress_test.c KVM: selftests: Enable mmu_stress_test on arm64 KVM: selftests: Use vcpu_arch_put_guest() in mmu_stress_test KVM: selftests: Precisely limit the number of guest loops in mmu_stress_test KVM: selftests: Add a read-only mprotect() phase to mmu_stress_test KVM: selftests: Verify KVM correctly handles mprotect(PROT_READ) KVM: selftests: Provide empty 'all' and 'clean' targets for unsupported ARCHs KVM: selftests: Use canonical $(ARCH) paths for KVM selftests directories KVM: selftests: Override ARCH for x86_64 instead of using ARCH_DIR MAINTAINERS | 12 +- arch/arm64/include/uapi/asm/kvm.h | 3 - arch/riscv/include/uapi/asm/kvm.h | 3 - include/uapi/linux/kvm.h | 4 + tools/testing/selftests/kvm/.gitignore | 1 + tools/testing/selftests/kvm/Makefile | 345 +----------------- tools/testing/selftests/kvm/Makefile.kvm | 330 +++++++++++++++++ .../kvm/{aarch64 => arm64}/aarch32_id_regs.c | 10 +- .../kvm/{aarch64 => arm64}/arch_timer.c | 0 .../arch_timer_edge_cases.c | 0 .../kvm/{aarch64 => arm64}/debug-exceptions.c | 4 +- .../kvm/{aarch64 => arm64}/get-reg-list.c | 0 .../kvm/{aarch64 => arm64}/hypercalls.c | 6 +- .../kvm/{aarch64 => arm64}/mmio_abort.c | 0 .../kvm/{aarch64 => arm64}/no-vgic-v3.c | 2 +- .../kvm/{aarch64 => arm64}/page_fault_test.c | 0 .../kvm/{aarch64 => arm64}/psci_test.c | 6 +- .../kvm/{aarch64 => arm64}/set_id_regs.c | 18 +- .../kvm/{aarch64 => arm64}/smccc_filter.c | 0 .../{aarch64 => arm64}/vcpu_width_config.c | 0 .../kvm/{aarch64 => arm64}/vgic_init.c | 0 .../kvm/{aarch64 => arm64}/vgic_irq.c | 0 .../kvm/{aarch64 => arm64}/vgic_lpi_stress.c | 0 .../{aarch64 => arm64}/vpmu_counter_access.c | 19 +- .../selftests/kvm/dirty_log_perf_test.c | 2 +- .../include/{aarch64 => arm64}/arch_timer.h | 0 .../kvm/include/{aarch64 => arm64}/delay.h | 0 .../kvm/include/{aarch64 => arm64}/gic.h | 0 .../kvm/include/{aarch64 => arm64}/gic_v3.h | 0 .../include/{aarch64 => arm64}/gic_v3_its.h | 0 .../{aarch64 => arm64}/kvm_util_arch.h | 0 .../include/{aarch64 => arm64}/processor.h | 0 .../kvm/include/{aarch64 => arm64}/spinlock.h | 0 .../kvm/include/{aarch64 => arm64}/ucall.h | 0 .../kvm/include/{aarch64 => arm64}/vgic.h | 0 .../testing/selftests/kvm/include/kvm_util.h | 10 +- .../kvm/include/{s390x => s390}/debug_print.h | 0 .../{s390x => s390}/diag318_test_handler.h | 0 .../kvm/include/{s390x => s390}/facility.h | 0 .../include/{s390x => s390}/kvm_util_arch.h | 0 .../kvm/include/{s390x => s390}/processor.h | 0 .../kvm/include/{s390x => s390}/sie.h | 0 .../kvm/include/{s390x => s390}/ucall.h | 0 .../kvm/include/{x86_64 => x86}/apic.h | 2 - .../kvm/include/{x86_64 => x86}/evmcs.h | 3 - .../kvm/include/{x86_64 => x86}/hyperv.h | 3 - .../include/{x86_64 => x86}/kvm_util_arch.h | 0 .../kvm/include/{x86_64 => x86}/mce.h | 2 - .../kvm/include/{x86_64 => x86}/pmu.h | 0 .../kvm/include/{x86_64 => x86}/processor.h | 2 - .../kvm/include/{x86_64 => x86}/sev.h | 0 .../kvm/include/{x86_64 => x86}/svm.h | 6 - .../kvm/include/{x86_64 => x86}/svm_util.h | 3 - .../kvm/include/{x86_64 => x86}/ucall.h | 0 .../kvm/include/{x86_64 => x86}/vmx.h | 2 - .../kvm/lib/{aarch64 => arm64}/gic.c | 0 .../kvm/lib/{aarch64 => arm64}/gic_private.h | 0 .../kvm/lib/{aarch64 => arm64}/gic_v3.c | 0 .../kvm/lib/{aarch64 => arm64}/gic_v3_its.c | 0 .../kvm/lib/{aarch64 => arm64}/handlers.S | 0 .../kvm/lib/{aarch64 => arm64}/processor.c | 8 +- .../kvm/lib/{aarch64 => arm64}/spinlock.c | 0 .../kvm/lib/{aarch64 => arm64}/ucall.c | 0 .../kvm/lib/{aarch64 => arm64}/vgic.c | 0 tools/testing/selftests/kvm/lib/kvm_util.c | 3 +- .../selftests/kvm/lib/riscv/processor.c | 66 ++-- .../{s390x => s390}/diag318_test_handler.c | 0 .../kvm/lib/{s390x => s390}/facility.c | 0 .../kvm/lib/{s390x => s390}/processor.c | 0 .../selftests/kvm/lib/{s390x => s390}/ucall.c | 0 .../selftests/kvm/lib/{x86_64 => x86}/apic.c | 0 .../kvm/lib/{x86_64 => x86}/handlers.S | 0 .../kvm/lib/{x86_64 => x86}/hyperv.c | 0 .../kvm/lib/{x86_64 => x86}/memstress.c | 2 +- .../selftests/kvm/lib/{x86_64 => x86}/pmu.c | 0 .../kvm/lib/{x86_64 => x86}/processor.c | 2 - .../selftests/kvm/lib/{x86_64 => x86}/sev.c | 0 .../selftests/kvm/lib/{x86_64 => x86}/svm.c | 1 - .../selftests/kvm/lib/{x86_64 => x86}/ucall.c | 0 .../selftests/kvm/lib/{x86_64 => x86}/vmx.c | 2 - ..._guest_memory_test.c => mmu_stress_test.c} | 162 +++++++- .../testing/selftests/kvm/riscv/arch_timer.c | 2 +- .../testing/selftests/kvm/riscv/ebreak_test.c | 2 +- .../selftests/kvm/riscv/sbi_pmu_test.c | 2 +- .../selftests/kvm/{s390x => s390}/cmma_test.c | 0 .../selftests/kvm/{s390x => s390}/config | 0 .../{s390x => s390}/cpumodel_subfuncs_test.c | 0 .../kvm/{s390x => s390}/debug_test.c | 0 .../selftests/kvm/{s390x => s390}/memop.c | 0 .../selftests/kvm/{s390x => s390}/resets.c | 2 +- .../{s390x => s390}/shared_zeropage_test.c | 0 .../kvm/{s390x => s390}/sync_regs_test.c | 0 .../selftests/kvm/{s390x => s390}/tprot.c | 0 .../kvm/{s390x => s390}/ucontrol_test.c | 0 .../selftests/kvm/set_memory_region_test.c | 6 +- tools/testing/selftests/kvm/steal_time.c | 3 +- .../selftests/kvm/{x86_64 => x86}/amx_test.c | 0 .../kvm/{x86_64 => x86}/apic_bus_clock_test.c | 0 .../kvm/{x86_64 => x86}/cpuid_test.c | 0 .../kvm/{x86_64 => x86}/cr4_cpuid_sync_test.c | 0 .../kvm/{x86_64 => x86}/debug_regs.c | 0 .../dirty_log_page_splitting_test.c | 0 .../exit_on_emulation_failure_test.c | 0 .../kvm/{x86_64 => x86}/feature_msrs_test.c | 0 .../kvm/{x86_64 => x86}/fix_hypercall_test.c | 0 .../kvm/{x86_64 => x86}/flds_emulation.h | 0 .../kvm/{x86_64 => x86}/hwcr_msr_test.c | 0 .../kvm/{x86_64 => x86}/hyperv_clock.c | 0 .../kvm/{x86_64 => x86}/hyperv_cpuid.c | 0 .../kvm/{x86_64 => x86}/hyperv_evmcs.c | 0 .../hyperv_extended_hypercalls.c | 0 .../kvm/{x86_64 => x86}/hyperv_features.c | 0 .../kvm/{x86_64 => x86}/hyperv_ipi.c | 0 .../kvm/{x86_64 => x86}/hyperv_svm_test.c | 0 .../kvm/{x86_64 => x86}/hyperv_tlb_flush.c | 0 .../kvm/{x86_64 => x86}/kvm_clock_test.c | 0 .../kvm/{x86_64 => x86}/kvm_pv_test.c | 0 .../kvm/{x86_64 => x86}/max_vcpuid_cap_test.c | 0 .../kvm/{x86_64 => x86}/monitor_mwait_test.c | 0 .../{x86_64 => x86}/nested_exceptions_test.c | 0 .../kvm/{x86_64 => x86}/nx_huge_pages_test.c | 0 .../kvm/{x86_64 => x86}/nx_huge_pages_test.sh | 0 .../kvm/{x86_64 => x86}/platform_info_test.c | 0 .../kvm/{x86_64 => x86}/pmu_counters_test.c | 0 .../{x86_64 => x86}/pmu_event_filter_test.c | 0 .../private_mem_conversions_test.c | 0 .../private_mem_kvm_exits_test.c | 0 .../{x86_64 => x86}/recalc_apic_map_test.c | 0 .../kvm/{x86_64 => x86}/set_boot_cpu_id.c | 0 .../kvm/{x86_64 => x86}/set_sregs_test.c | 0 .../kvm/{x86_64 => x86}/sev_init2_tests.c | 0 .../kvm/{x86_64 => x86}/sev_migrate_tests.c | 0 .../kvm/{x86_64 => x86}/sev_smoke_test.c | 0 .../smaller_maxphyaddr_emulation_test.c | 0 .../selftests/kvm/{x86_64 => x86}/smm_test.c | 0 .../kvm/{x86_64 => x86}/state_test.c | 0 .../kvm/{x86_64 => x86}/svm_int_ctl_test.c | 0 .../svm_nested_shutdown_test.c | 0 .../svm_nested_soft_inject_test.c | 0 .../kvm/{x86_64 => x86}/svm_vmcall_test.c | 0 .../kvm/{x86_64 => x86}/sync_regs_test.c | 0 .../{x86_64 => x86}/triple_fault_event_test.c | 0 .../kvm/{x86_64 => x86}/tsc_msrs_test.c | 0 .../kvm/{x86_64 => x86}/tsc_scaling_sync.c | 0 .../kvm/{x86_64 => x86}/ucna_injection_test.c | 0 .../kvm/{x86_64 => x86}/userspace_io_test.c | 0 .../{x86_64 => x86}/userspace_msr_exit_test.c | 0 .../{x86_64 => x86}/vmx_apic_access_test.c | 0 .../vmx_close_while_nested_test.c | 0 .../kvm/{x86_64 => x86}/vmx_dirty_log_test.c | 0 .../vmx_exception_with_invalid_guest_state.c | 0 .../vmx_invalid_nested_guest_state.c | 0 .../kvm/{x86_64 => x86}/vmx_msrs_test.c | 0 .../vmx_nested_tsc_scaling_test.c | 0 .../kvm/{x86_64 => x86}/vmx_pmu_caps_test.c | 0 .../vmx_preemption_timer_test.c | 0 .../vmx_set_nested_state_test.c | 0 .../kvm/{x86_64 => x86}/vmx_tsc_adjust_test.c | 0 .../kvm/{x86_64 => x86}/xapic_ipi_test.c | 0 .../kvm/{x86_64 => x86}/xapic_state_test.c | 0 .../kvm/{x86_64 => x86}/xcr0_cpuid_test.c | 0 .../kvm/{x86_64 => x86}/xen_shinfo_test.c | 0 .../kvm/{x86_64 => x86}/xen_vmcall_test.c | 0 .../kvm/{x86_64 => x86}/xss_msr_test.c | 0 164 files changed, 584 insertions(+), 477 deletions(-) create mode 100644 tools/testing/selftests/kvm/Makefile.kvm rename tools/testing/selftests/kvm/{aarch64 => arm64}/aarch32_id_regs.c (95%) rename tools/testing/selftests/kvm/{aarch64 => arm64}/arch_timer.c (100%) rename tools/testing/selftests/kvm/{aarch64 => arm64}/arch_timer_edge_cases.c (100%) rename tools/testing/selftests/kvm/{aarch64 => arm64}/debug-exceptions.c (99%) rename tools/testing/selftests/kvm/{aarch64 => arm64}/get-reg-list.c (100%) rename tools/testing/selftests/kvm/{aarch64 => arm64}/hypercalls.c (98%) rename tools/testing/selftests/kvm/{aarch64 => arm64}/mmio_abort.c (100%) rename tools/testing/selftests/kvm/{aarch64 => arm64}/no-vgic-v3.c (98%) rename tools/testing/selftests/kvm/{aarch64 => arm64}/page_fault_test.c (100%) rename tools/testing/selftests/kvm/{aarch64 => arm64}/psci_test.c (97%) rename tools/testing/selftests/kvm/{aarch64 => arm64}/set_id_regs.c (97%) rename tools/testing/selftests/kvm/{aarch64 => arm64}/smccc_filter.c (100%) rename tools/testing/selftests/kvm/{aarch64 => arm64}/vcpu_width_config.c (100%) rename tools/testing/selftests/kvm/{aarch64 => arm64}/vgic_init.c (100%) rename tools/testing/selftests/kvm/{aarch64 => arm64}/vgic_irq.c (100%) rename tools/testing/selftests/kvm/{aarch64 => arm64}/vgic_lpi_stress.c (100%) rename tools/testing/selftests/kvm/{aarch64 => arm64}/vpmu_counter_access.c (97%) rename tools/testing/selftests/kvm/include/{aarch64 => arm64}/arch_timer.h (100%) rename tools/testing/selftests/kvm/include/{aarch64 => arm64}/delay.h (100%) rename tools/testing/selftests/kvm/include/{aarch64 => arm64}/gic.h (100%) rename tools/testing/selftests/kvm/include/{aarch64 => arm64}/gic_v3.h (100%) rename tools/testing/selftests/kvm/include/{aarch64 => arm64}/gic_v3_its.h (100%) rename tools/testing/selftests/kvm/include/{aarch64 => arm64}/kvm_util_arch.h (100%) rename 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x86}/vmx_pmu_caps_test.c (100%) rename tools/testing/selftests/kvm/{x86_64 => x86}/vmx_preemption_timer_test.c (100%) rename tools/testing/selftests/kvm/{x86_64 => x86}/vmx_set_nested_state_test.c (100%) rename tools/testing/selftests/kvm/{x86_64 => x86}/vmx_tsc_adjust_test.c (100%) rename tools/testing/selftests/kvm/{x86_64 => x86}/xapic_ipi_test.c (100%) rename tools/testing/selftests/kvm/{x86_64 => x86}/xapic_state_test.c (100%) rename tools/testing/selftests/kvm/{x86_64 => x86}/xcr0_cpuid_test.c (100%) rename tools/testing/selftests/kvm/{x86_64 => x86}/xen_shinfo_test.c (100%) rename tools/testing/selftests/kvm/{x86_64 => x86}/xen_vmcall_test.c (100%) rename tools/testing/selftests/kvm/{x86_64 => x86}/xss_msr_test.c (100%) base-commit: 4d911c7abee56771b0219a9fbf0120d06bdc9c14