Re: [PATCH] KVM: selftests: Always run vCPU thread with blocked SIG_IPI

On Tue, Apr 20, 2021 at 04:16:14AM -0400, Paolo Bonzini wrote:

The main thread could start to send SIG_IPI at any time, even before signal blocked on vcpu thread. Therefore, start the vcpu thread with the signal blocked.

Without this patch, on very busy cores the dirty_log_test could fail directly on receiving a SIGUSR1 without a handler (when vcpu runs far slower than main).

Reported-by: Peter Xu peterx@redhat.com Cc: stable@vger.kernel.org Signed-off-by: Paolo Bonzini pbonzini@redhat.com

Yes, indeed better! :)

Reviewed-by: Peter Xu peterx@redhat.com