From owner-svn-src-head@freebsd.org Wed Oct 12 16:03:47 2016 Return-Path: Delivered-To: svn-src-head@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 13976C0EA9E; Wed, 12 Oct 2016 16:03:47 +0000 (UTC) (envelope-from slw@zxy.spb.ru) Received: from zxy.spb.ru (zxy.spb.ru [195.70.199.98]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id BEA68204; Wed, 12 Oct 2016 16:03:46 +0000 (UTC) (envelope-from slw@zxy.spb.ru) Received: from slw by zxy.spb.ru with local (Exim 4.86 (FreeBSD)) (envelope-from ) id 1buM0O-0002bE-FC; Wed, 12 Oct 2016 19:03:44 +0300 Date: Wed, 12 Oct 2016 19:03:44 +0300 From: Slawa Olhovchenkov To: Andriy Gapon Cc: Konstantin Belousov , svn-src-head@FreeBSD.org, svn-src-all@FreeBSD.org, src-committers@FreeBSD.org Subject: Re: svn commit: r306680 - in head/sys: amd64/amd64 amd64/include i386/include x86/include x86/x86 Message-ID: <20161012160344.GD57876@zxy.spb.ru> References: <201610041701.u94H1OK3061119@repo.freebsd.org> <425655dd-ba13-8944-0f31-b1ad6666d90a@FreeBSD.org> <20161012134550.GX68202@kib.kiev.ua> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.24 (2015-08-30) X-SA-Exim-Connect-IP: X-SA-Exim-Mail-From: slw@zxy.spb.ru X-SA-Exim-Scanned: No (on zxy.spb.ru); SAEximRunCond expanded to false X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: SVN commit messages for the src tree for head/-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 12 Oct 2016 16:03:47 -0000 On Wed, Oct 12, 2016 at 06:30:09PM +0300, Andriy Gapon wrote: > On 12/10/2016 16:45, Konstantin Belousov wrote: > > 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. > > Sorry for the noise, then. Somehow I thought that this went into the release > branch, but obviously there was too little time for that. > > > The examination must start with backtracing the thread which owns the > > smp_ipi_mtx (shown on the screenshot). > > It looks like DDB is not in GENERIC in 11.0? Yes, DDB is absent in GENERIC 11.0 > Not sure if the reporter would be able to configure a dump device and then save > the dump given that the panic happens in the installer. > If anyone could provide them with instructions that would be great. > > -- > Andriy Gapon > _______________________________________________ > svn-src-all@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/svn-src-all > To unsubscribe, send any mail to "svn-src-all-unsubscribe@freebsd.org"