On Wed, Dec 18, 2024, Sean Christopherson wrote: > On Wed, Dec 18, 2024, Sean Christopherson wrote: > > On Wed, 27 Nov 2024 16:55:31 -0800, Sean Christopherson wrote: > > > 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. > > > > > > [...] > > > > As I am running out of time before I disappear for two weeks, applied to: > > > > https://github.com/kvm-x86/linux.git selftests_arch > > > > Other KVM maintainers, that branch is officially immutable. I also pushed a tag, > > kvm-selftests-arch-6.14, just in case I pull a stupid and manage to clobber the > > branch. My apologies if this causes pain. AFAICT, there aren't any queued or > > in-flight patches that git's rename magic can't automatically handle, so hopefully > > this ends up being pain-free. > > > > Paolo, here's a pull request if you want to pull this into kvm/next long before > > the 6.14 merge window. Diff stats at the very bottom (hilariously long). > > Argh! I completely forget to build test this on non-x86, and missed that arm64 > snuck in 75cd027cbcb1 ("KVM: arm64: selftests: Test ID_AA64PFR0.MPAM isn't completely > ignored"). *sigh* > > Given that I just sent out mail, I'm going to cross my fingers and hope that no > one has merged the above branch/tag. I've deleted the branch and tags from the > remote, but kept the tag locally just in case. > > Please holler if you managed to grab the broken branch/tag. If no one screams, > I'll assume I got luckly and will push a fixed version (with different names) later > today. Third time is the charm. Compile tested on all architectures, and runtime tested on x86 and arm64. https://github.com/kvm-x86/linux.git selftests_treewide_6.14 --- The following changes since commit 3522c419758ee8dca5a0e8753ee0070a22157bc1: Merge tag 'kvm-riscv-fixes-6.13-1' of https://github.com/kvm-riscv/linux into HEAD (2024-12-13 13:59:20 -0500) are available in the Git repository at: https://github.com/kvm-x86/linux.git tags/kvm-selftests-treewide-6.14 for you to fetch changes up to 9af04539d474dda4984ff4909d4568e6123c8cba: KVM: selftests: Override ARCH for x86_64 instead of using ARCH_DIR (2024-12-18 14:15:05 -0800) ---------------------------------------------------------------- KVM selftests "tree"-wide changes for 6.14: - Rework vcpu_get_reg() to return a value instead of using an out-param, and update all affected arch code accordingly. - 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. - 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. - Use the kernel's $(ARCH) definition 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. ---------------------------------------------------------------- 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 -- [01/16] KVM: Move KVM_REG_SIZE() definition to common uAPI header https://github.com/kvm-x86/linux/commit/915d2f0718a4 [02/16] KVM: selftests: Return a value from vcpu_get_reg() instead of using an out-param https://github.com/kvm-x86/linux/commit/09bb926d2907 [03/16] KVM: selftests: Assert that vcpu_{g,s}et_reg() won't truncate https://github.com/kvm-x86/linux/commit/fe85ce31b289 [04/16] KVM: selftests: Check for a potential unhandled exception iff KVM_RUN succeeded https://github.com/kvm-x86/linux/commit/d6533c151338 [05/16] KVM: selftests: Rename max_guest_memory_test to mmu_stress_test https://github.com/kvm-x86/linux/commit/b12391498d1e [06/16] KVM: selftests: Only muck with SREGS on x86 in mmu_stress_test https://github.com/kvm-x86/linux/commit/55e164df482a [07/16] KVM: selftests: Compute number of extra pages needed in mmu_stress_test https://github.com/kvm-x86/linux/commit/1ddd3ea75ac3 [08/16] KVM: sefltests: Explicitly include ucall_common.h in mmu_stress_test.c https://github.com/kvm-x86/linux/commit/c35d8f579e50 [09/16] KVM: selftests: Enable mmu_stress_test on arm64 https://github.com/kvm-x86/linux/commit/8abe7632a1ee [10/16] KVM: selftests: Use vcpu_arch_put_guest() in mmu_stress_test https://github.com/kvm-x86/linux/commit/3a0422526404 [11/16] KVM: selftests: Precisely limit the number of guest loops in mmu_stress_test https://github.com/kvm-x86/linux/commit/82b542e11848 [12/16] KVM: selftests: Add a read-only mprotect() phase to mmu_stress_test https://github.com/kvm-x86/linux/commit/80b7859a3a43 [13/16] KVM: selftests: Verify KVM correctly handles mprotect(PROT_READ) https://github.com/kvm-x86/linux/commit/b6c304aec648 [14/16] KVM: selftests: Provide empty 'all' and 'clean' targets for unsupported ARCHs https://github.com/kvm-x86/linux/commit/43fbd8cd389f [15/16] KVM: selftests: Use canonical $(ARCH) paths for KVM selftests directories https://github.com/kvm-x86/linux/commit/67730e6c53d7 [16/16] KVM: selftests: Override ARCH for x86_64 instead of using ARCH_DIR https://github.com/kvm-x86/linux/commit/9af04539d474 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 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ tools/testing/selftests/kvm/{aarch64 => arm64}/aarch32_id_regs.c | 10 +-- tools/testing/selftests/kvm/{aarch64 => arm64}/arch_timer.c | 0 tools/testing/selftests/kvm/{aarch64 => arm64}/arch_timer_edge_cases.c | 0 tools/testing/selftests/kvm/{aarch64 => arm64}/debug-exceptions.c | 4 +- tools/testing/selftests/kvm/{aarch64 => arm64}/get-reg-list.c | 0 tools/testing/selftests/kvm/{aarch64 => arm64}/hypercalls.c | 6 +- tools/testing/selftests/kvm/{aarch64 => arm64}/mmio_abort.c | 0 tools/testing/selftests/kvm/{aarch64 => arm64}/no-vgic-v3.c | 2 +- tools/testing/selftests/kvm/{aarch64 => arm64}/page_fault_test.c | 0 tools/testing/selftests/kvm/{aarch64 => arm64}/psci_test.c | 8 +- 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tools/testing/selftests/kvm/{x86_64 => x86}/vmx_exception_with_invalid_guest_state.c | 0 tools/testing/selftests/kvm/{x86_64 => x86}/vmx_invalid_nested_guest_state.c | 0 tools/testing/selftests/kvm/{x86_64 => x86}/vmx_msrs_test.c | 0 tools/testing/selftests/kvm/{x86_64 => x86}/vmx_nested_tsc_scaling_test.c | 0 tools/testing/selftests/kvm/{x86_64 => x86}/vmx_pmu_caps_test.c | 0 tools/testing/selftests/kvm/{x86_64 => x86}/vmx_preemption_timer_test.c | 0 tools/testing/selftests/kvm/{x86_64 => x86}/vmx_set_nested_state_test.c | 0 tools/testing/selftests/kvm/{x86_64 => x86}/vmx_tsc_adjust_test.c | 0 tools/testing/selftests/kvm/{x86_64 => x86}/xapic_ipi_test.c | 0 tools/testing/selftests/kvm/{x86_64 => x86}/xapic_state_test.c | 0 tools/testing/selftests/kvm/{x86_64 => x86}/xcr0_cpuid_test.c | 0 tools/testing/selftests/kvm/{x86_64 => x86}/xen_shinfo_test.c | 0 tools/testing/selftests/kvm/{x86_64 => x86}/xen_vmcall_test.c | 0 tools/testing/selftests/kvm/{x86_64 => x86}/xss_msr_test.c | 0 164 files changed, 587 insertions(+), 480 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 (96%) 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 tools/testing/selftests/kvm/include/{aarch64 => arm64}/processor.h (100%) rename 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