Date: Wed, 12 Oct 2016 19:03:44 +0300 From: Slawa Olhovchenkov <slw@zxy.spb.ru> To: Andriy Gapon <avg@FreeBSD.org> Cc: Konstantin Belousov <kostikbel@gmail.com>, 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> In-Reply-To: <ef6f7ef2-ede9-0cb6-9e70-426117654332@FreeBSD.org> References: <201610041701.u94H1OK3061119@repo.freebsd.org> <425655dd-ba13-8944-0f31-b1ad6666d90a@FreeBSD.org> <20161012134550.GX68202@kib.kiev.ua> <ef6f7ef2-ede9-0cb6-9e70-426117654332@FreeBSD.org>
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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"
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