We add LoongArch support into KVM selftests and there are some KVM test cases we have passed: demand_paging_test dirty_log_perf_test dirty_log_test guest_print_test kvm_binary_stats_test kvm_create_max_vcpus kvm_page_table_test memslot_modification_stress_test memslot_perf_test set_memory_region_test Changes for v5: 1. In LoongArch kvm self tests, the DEFAULT_GUEST_TEST_MEM could be 0x130000000, it is different from the default value in memstress.h. So we Move the definition of DEFAULT_GUEST_TEST_MEM into LoongArch ucall.h, and add 'ifndef' condition for DEFAULT_GUEST_TEST_MEM in memstress.h. Changes for v4: 1. Remove the based-on flag, as the LoongArch KVM patch series have been accepted by Linux kernel, so this can be applied directly in kernel. Changes for v3: 1. Improve implementation of LoongArch VM page walk. 2. Add exception handler for LoongArch. 3. Add dirty_log_test, dirty_log_perf_test, guest_print_test test cases for LoongArch. 4. Add __ASSEMBLER__ macro to distinguish asm file and c file. 5. Move ucall_arch_do_ucall to the header file and make it as static inline to avoid function calls. 6. Change the DEFAULT_GUEST_TEST_MEM base addr for LoongArch. Changes for v2: 1. We should use ".balign 4096" to align the assemble code with 4K in exception.S instead of "align 12". 2. LoongArch only supports 3 or 4 levels page tables, so we remove the hanlders for 2-levels page table. 3. Remove the DEFAULT_LOONGARCH_GUEST_STACK_VADDR_MIN and use the common DEFAULT_GUEST_STACK_VADDR_MIN to allocate stack memory in guest. 4. Reorganize the test cases supported by LoongArch. 5. Fix some code comments. 6. Add kvm_binary_stats_test test case into LoongArch KVM selftests. changes for v1: 1. Add kvm selftests header files for LoongArch. 2. Add processor tests for LoongArch KVM. 3. Add ucall tests for LoongArch KVM. 4. Add LoongArch tests into makefile. All of the test cases results: 1..10 timeout set to 120 selftests: kvm: demand_paging_test Testing guest mode: PA-bits:36, VA-bits:47, 16K pages guest physical test memory: [0xfbfffc000, 0xfffffc000) Finished creating vCPUs and starting uffd threads Started all vCPUs All vCPU threads joined Total guest execution time: 0.200804700s Overall demand paging rate: 326366.862927 pgs/sec ok 1 selftests: kvm: demand_paging_test timeout set to 120 selftests: kvm: dirty_log_perf_test Test iterations: 2 Testing guest mode: PA-bits:36, VA-bits:47, 16K pages guest physical test memory: [0xfbfffc000, 0xfffffc000) Random seed: 1 Populate memory time: 0.201452560s Enabling dirty logging time: 0.000451670s Iteration 1 dirty memory time: 0.051582140s Iteration 1 get dirty log time: 0.000010510s Iteration 1 clear dirty log time: 0.000421730s Iteration 2 dirty memory time: 0.046593760s Iteration 2 get dirty log time: 0.000002110s Iteration 2 clear dirty log time: 0.000418020s Disabling dirty logging time: 0.002948490s Get dirty log over 2 iterations took 0.000012620s. (Avg 0.000006310s/iteration) Clear dirty log over 2 iterations took 0.000839750s. (Avg 0.000419875s/iteration) ok 2 selftests: kvm: dirty_log_perf_test timeout set to 120 selftests: kvm: dirty_log_test Test iterations: 32, interval: 10 (ms) Testing Log Mode 'dirty-log' Testing guest mode: PA-bits:36, VA-bits:47, 16K pages guest physical test memory offset: 0xfbfff0000 Dirtied 453632 pages Total bits checked: dirty (436564), clear (1595145), track_next (70002) Testing Log Mode 'clear-log' Testing guest mode: PA-bits:36, VA-bits:47, 16K pages guest physical test memory offset: 0xfbfff0000 Dirtied 425984 pages Total bits checked: dirty (414397), clear (1617312), track_next (68152) Testing Log Mode 'dirty-ring' Testing guest mode: PA-bits:36, VA-bits:47, 16K pages dirty ring count: 0x10000 guest physical test memory offset: 0xfbfff0000 vcpu stops because vcpu is kicked out... Notifying vcpu to continue vcpu continues now. Iteration 1 collected 3201 pages vcpu stops because dirty ring is full... vcpu continues now. vcpu stops because dirty ring is full... Notifying vcpu to continue Iteration 2 collected 65472 pages ...... vcpu continues now. vcpu stops because vcpu is kicked out... vcpu continues now. vcpu stops because vcpu is kicked out... Notifying vcpu to continue vcpu continues now. Iteration 31 collected 12642 pages vcpu stops because dirty ring is full... vcpu continues now. Dirtied 7275520 pages Total bits checked: dirty (1165675), clear (866034), track_next (811358) ok 3 selftests: kvm: dirty_log_test timeout set to 120 selftests: kvm: guest_print_test ok 4 selftests: kvm: guest_print_test timeout set to 120 selftests: kvm: kvm_binary_stats_test TAP version 13 1..4 ok 1 vm0 ok 2 vm1 ok 3 vm2 ok 4 vm3 # Totals: pass:4 fail:0 xfail:0 xpass:0 skip:0 error:0 ok 5 selftests: kvm: kvm_binary_stats_test timeout set to 120 selftests: kvm: kvm_create_max_vcpus KVM_CAP_MAX_VCPU_ID: 256 KVM_CAP_MAX_VCPUS: 256 Testing creating 256 vCPUs, with IDs 0...255. ok 6 selftests: kvm: kvm_create_max_vcpus timeout set to 120 selftests: kvm: kvm_page_table_test Testing guest mode: PA-bits:36, VA-bits:47, 16K pages Testing memory backing src type: anonymous Testing memory backing src granularity: 0x4000 Testing memory size(aligned): 0x40000000 Guest physical test memory offset: 0xfbfffc000 Host virtual test memory offset: 0x7fffb0860000 Number of testing vCPUs: 1 Started all vCPUs successfully KVM_CREATE_MAPPINGS: total execution time: 0.200919330s KVM_UPDATE_MAPPINGS: total execution time: 0.051182930s KVM_ADJUST_MAPPINGS: total execution time: 0.010083590s ok 7 selftests: kvm: kvm_page_table_test timeout set to 120 selftests: kvm: memslot_modification_stress_test Testing guest mode: PA-bits:36, VA-bits:47, 16K pages guest physical test memory: [0xfbfffc000, 0xfffffc000) Finished creating vCPUs Started all vCPUs All vCPU threads joined ok 8 selftests: kvm: memslot_modification_stress_test timeout set to 120 selftests: kvm: memslot_perf_test Testing map performance with 1 runs, 5 seconds each Memslot count too high for this test, decrease the cap (max is 2053) Testing unmap performance with 1 runs, 5 seconds each Memslot count too high for this test, decrease the cap (max is 8197) Testing unmap chunked performance with 1 runs, 5 seconds each Memslot count too high for this test, decrease the cap (max is 8197) Testing move active area performance with 1 runs, 5 seconds each Test took 0.761678900s for slot setup + 5.000014460s all iterations Done 120167 iterations, avg 0.000041608s each Best runtime result was 0.000041608s per iteration (with 120167 iterations) Testing move inactive area performance with 1 runs, 5 seconds each Test took 0.771796550s for slot setup + 5.000018520s all iterations Done 136354 iterations, avg 0.000036669s each Best runtime result was 0.000036669s per iteration (with 136354 iterations) Testing RW performance with 1 runs, 5 seconds each Test took 0.763568840s for slot setup + 5.002233800s all iterations Done 649 iterations, avg 0.007707602s each Best runtime result was 0.007707602s per iteration (with 649 iterations) Best slot setup time for the whole test area was 0.761678900s ok 9 selftests: kvm: memslot_perf_test timeout set to 120 selftests: kvm: set_memory_region_test Allowed number of memory slots: 32767 Adding slots 0..32766, each memory region with 2048K size ok 10 selftests: kvm: set_memory_region_test Tianrui Zhao (4): KVM: selftests: Add KVM selftests header files for LoongArch KVM: selftests: Add core KVM selftests support for LoongArch KVM: selftests: Add ucall test support for LoongArch KVM: selftests: Add test cases for LoongArch tools/testing/selftests/kvm/Makefile | 15 + .../selftests/kvm/include/kvm_util_base.h | 5 + .../kvm/include/loongarch/processor.h | 133 +++++++ .../selftests/kvm/include/loongarch/ucall.h | 28 ++ .../testing/selftests/kvm/include/memstress.h | 2 + .../selftests/kvm/lib/loongarch/exception.S | 59 ++++ .../selftests/kvm/lib/loongarch/processor.c | 333 ++++++++++++++++++ .../selftests/kvm/lib/loongarch/ucall.c | 38 ++ 8 files changed, 613 insertions(+) create mode 100644 tools/testing/selftests/kvm/include/loongarch/processor.h create mode 100644 tools/testing/selftests/kvm/include/loongarch/ucall.h create mode 100644 tools/testing/selftests/kvm/lib/loongarch/exception.S create mode 100644 tools/testing/selftests/kvm/lib/loongarch/processor.c create mode 100644 tools/testing/selftests/kvm/lib/loongarch/ucall.c -- 2.39.1
