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). --- 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-arch-6.14 for you to fetch changes up to d76fe926b6c443f912bbb14bbcd42a8b9e5d68f6: KVM: selftests: Override ARCH for x86_64 instead of using ARCH_DIR (2024-12-17 08:49:49 -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/411e22037f8c [03/16] KVM: selftests: Assert that vcpu_{g,s}et_reg() won't truncate https://github.com/kvm-x86/linux/commit/446d7f483be3 [04/16] KVM: selftests: Check for a potential unhandled exception iff KVM_RUN succeeded https://github.com/kvm-x86/linux/commit/f3c4e02e4da2 [05/16] KVM: selftests: Rename max_guest_memory_test to mmu_stress_test https://github.com/kvm-x86/linux/commit/356ebe558f55 [06/16] KVM: selftests: Only muck with SREGS on x86 in mmu_stress_test https://github.com/kvm-x86/linux/commit/66d612d32fe3 [07/16] KVM: selftests: Compute number of extra pages needed in mmu_stress_test https://github.com/kvm-x86/linux/commit/f1e0b743b12e [08/16] KVM: sefltests: Explicitly include ucall_common.h in mmu_stress_test.c https://github.com/kvm-x86/linux/commit/0ce51ad9d565 [09/16] KVM: selftests: Enable mmu_stress_test on arm64 https://github.com/kvm-x86/linux/commit/d2fa5a3b80c6 [10/16] KVM: selftests: Use vcpu_arch_put_guest() in mmu_stress_test https://github.com/kvm-x86/linux/commit/c1797c2be44d [11/16] KVM: selftests: Precisely limit the number of guest loops in mmu_stress_test https://github.com/kvm-x86/linux/commit/9615ab61eb54 [12/16] KVM: selftests: Add a read-only mprotect() phase to mmu_stress_test https://github.com/kvm-x86/linux/commit/d9a3b8ab6643 [13/16] KVM: selftests: Verify KVM correctly handles mprotect(PROT_READ) https://github.com/kvm-x86/linux/commit/a606855e27b3 [14/16] KVM: selftests: Provide empty 'all' and 'clean' targets for unsupported ARCHs https://github.com/kvm-x86/linux/commit/1f13ec4de22d [15/16] KVM: selftests: Use canonical $(ARCH) paths for KVM selftests directories https://github.com/kvm-x86/linux/commit/022d78205681 [16/16] KVM: selftests: Override ARCH for x86_64 instead of using ARCH_DIR https://github.com/kvm-x86/linux/commit/d76fe926b6c4 -- https://github.com/kvm-x86/linux/tree/next 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 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tools/testing/selftests/kvm/include/{x86_64 => x86}/hyperv.h | 3 - tools/testing/selftests/kvm/include/{x86_64 => x86}/kvm_util_arch.h | 0 tools/testing/selftests/kvm/include/{x86_64 => x86}/mce.h | 2 - tools/testing/selftests/kvm/include/{x86_64 => x86}/pmu.h | 0 tools/testing/selftests/kvm/include/{x86_64 => x86}/processor.h | 2 - tools/testing/selftests/kvm/include/{x86_64 => x86}/sev.h | 0 tools/testing/selftests/kvm/include/{x86_64 => x86}/svm.h | 6 -- tools/testing/selftests/kvm/include/{x86_64 => x86}/svm_util.h | 3 - tools/testing/selftests/kvm/include/{x86_64 => x86}/ucall.h | 0 tools/testing/selftests/kvm/include/{x86_64 => x86}/vmx.h | 2 - tools/testing/selftests/kvm/lib/{aarch64 => arm64}/gic.c | 0 tools/testing/selftests/kvm/lib/{aarch64 => arm64}/gic_private.h | 0 tools/testing/selftests/kvm/lib/{aarch64 => arm64}/gic_v3.c | 0 tools/testing/selftests/kvm/lib/{aarch64 => arm64}/gic_v3_its.c | 0 tools/testing/selftests/kvm/lib/{aarch64 => arm64}/handlers.S | 0 tools/testing/selftests/kvm/lib/{aarch64 => arm64}/processor.c | 8 +- tools/testing/selftests/kvm/lib/{aarch64 => arm64}/spinlock.c | 0 tools/testing/selftests/kvm/lib/{aarch64 => arm64}/ucall.c | 0 tools/testing/selftests/kvm/lib/{aarch64 => arm64}/vgic.c | 0 tools/testing/selftests/kvm/lib/kvm_util.c | 3 +- tools/testing/selftests/kvm/lib/riscv/processor.c | 66 ++++++++-------- tools/testing/selftests/kvm/lib/{s390x => s390}/diag318_test_handler.c | 0 tools/testing/selftests/kvm/lib/{s390x => s390}/facility.c | 0 tools/testing/selftests/kvm/lib/{s390x => s390}/processor.c | 0 tools/testing/selftests/kvm/lib/{s390x => s390}/ucall.c | 0 tools/testing/selftests/kvm/lib/{x86_64 => x86}/apic.c | 0 tools/testing/selftests/kvm/lib/{x86_64 => x86}/handlers.S | 0 tools/testing/selftests/kvm/lib/{x86_64 => x86}/hyperv.c | 0 tools/testing/selftests/kvm/lib/{x86_64 => x86}/memstress.c | 2 +- tools/testing/selftests/kvm/lib/{x86_64 => x86}/pmu.c | 0 tools/testing/selftests/kvm/lib/{x86_64 => 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tools/testing/selftests/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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(99%) rename tools/testing/selftests/kvm/include/{x86_64 => x86}/hyperv.h (99%) rename tools/testing/selftests/kvm/include/{x86_64 => x86}/kvm_util_arch.h (100%) rename tools/testing/selftests/kvm/include/{x86_64 => x86}/mce.h (94%) rename tools/testing/selftests/kvm/include/{x86_64 => x86}/pmu.h (100%) rename tools/testing/selftests/kvm/include/{x86_64 => x86}/processor.h (99%) rename tools/testing/selftests/kvm/include/{x86_64 => x86}/sev.h (100%) rename tools/testing/selftests/kvm/include/{x86_64 => x86}/svm.h (98%) rename tools/testing/selftests/kvm/include/{x86_64 => x86}/svm_util.h (94%) rename tools/testing/selftests/kvm/include/{x86_64 => x86}/ucall.h (100%) rename tools/testing/selftests/kvm/include/{x86_64 => x86}/vmx.h (99%) rename tools/testing/selftests/kvm/lib/{aarch64 => arm64}/gic.c (100%) rename tools/testing/selftests/kvm/lib/{aarch64 => arm64}/gic_private.h (100%) rename tools/testing/selftests/kvm/lib/{aarch64 => arm64}/gic_v3.c (100%) rename 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