On Wed, Oct 12, 2016 at 04:25:00PM +0300, Andriy Gapon wrote: > On 04/10/2016 20:01, Konstantin Belousov wrote: > > Author: kib > > Date: Tue Oct 4 17:01:24 2016 > > New Revision: 306680 > > URL: https://svnweb.freebsd.org/changeset/base/306680 > > > > Log: > > Re-apply r306516 (by cem): > > > > Reduce the cost of TLB invalidation on x86 by using per-CPU completion > > flags > > > > Reduce contention during TLB invalidation operations by using a per-CPU > > completion flag, rather than a single atomically-updated variable. > > Kostik, > > could this commit cause a problem reported in the below links? > https://bz-attachments.freebsd.org/attachment.cgi?id=175614 > https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=213371
If I am reading the report right, the problem appears on the 11.0-RELEASE system. The patch you reference was only applied to HEAD a week ago and was not merged even to stable/11. The examination must start with backtracing the thread which owns the smp_ipi_mtx (shown on the screenshot). _______________________________________________ [email protected] mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "[email protected]"
