On Fri, 2025-01-10 at 16:29 -0800, Sean Christopherson wrote:
> 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@google.com
> [2] https://lore.kernel.org/all/20241211193706.469817-1-mlevitsk@redhat.com
>
> 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@google.com
>
> 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
I don't think I have any major objections to this patch series.
Best regards,
Maxim Levitsky