Fix a variety of flaws and false failures/passes in dirty_log_test, and drop code/behavior that adds complexity while adding little-to-no benefit. Lots of details in the changelogs, and a partial list of complaints[1] in Maxim's original thread[2]. [1] https://lore.kernel.org/all/Z1vR25ylN5m_DRSy@xxxxxxxxxx [2] https://lore.kernel.org/all/20241211193706.469817-1-mlevitsk@xxxxxxxxxx v2: - Collect reviews. [Maxim] - Expand a few changelogs to be more explicit about the effects. [Maxim] - Print the number of writes from each iteration. [Maxim] - Fix goofs in the last patch (stale message and changelog). [Maxim] v1: https://lore.kernel.org/all/20241214010721.2356923-1-seanjc@xxxxxxxxxx Maxim Levitsky (2): KVM: selftests: Support multiple write retires in dirty_log_test KVM: selftests: Limit dirty_log_test's s390x workaround to s390x Sean Christopherson (18): KVM: selftests: Sync dirty_log_test iteration to guest *before* resuming KVM: selftests: Drop signal/kick from dirty ring testcase KVM: selftests: Drop stale srandom() initialization from dirty_log_test KVM: selftests: Precisely track number of dirty/clear pages for each iteration KVM: selftests: Read per-page value into local var when verifying dirty_log_test KVM: selftests: Continuously reap dirty ring while vCPU is running KVM: selftests: Honor "stop" request in dirty ring test KVM: selftests: Keep dirty_log_test vCPU in guest until it needs to stop KVM: selftests: Post to sem_vcpu_stop if and only if vcpu_stop is true KVM: selftests: Use continue to handle all "pass" scenarios in dirty_log_test KVM: selftests: Print (previous) last_page on dirty page value mismatch KVM: selftests: Collect *all* dirty entries in each dirty_log_test iteration KVM: sefltests: Verify value of dirty_log_test last page isn't bogus KVM: selftests: Ensure guest writes min number of pages in dirty_log_test KVM: selftests: Tighten checks around prev iter's last dirty page in ring KVM: selftests: Set per-iteration variables at the start of each iteration KVM: selftests: Fix an off-by-one in the number of dirty_log_test iterations KVM: selftests: Allow running a single iteration of dirty_log_test tools/testing/selftests/kvm/dirty_log_test.c | 521 +++++++++---------- 1 file changed, 246 insertions(+), 275 deletions(-) base-commit: 10485c4bc3caad3e93a6a4e99003e8ffffcd826a -- 2.47.1.613.gc27f4b7a9f-goog
