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From: Pavel Machek <pavel@ucw.cz>
To: Jiri Kosina <jikos@kernel.org>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>,
	Thomas Gleixner <tglx@linutronix.de>,
	Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
	"H. Peter Anvin" <hpa@zytor.com>,
	Josh Poimboeuf <jpoimboe@redhat.com>,
	Peter Zijlstra <peterz@infradead.org>,
	x86@kernel.org, linux-pm@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH v3] x86/power: Fix 'nosmt' vs. hibernation triple fault during resume
Date: Wed, 29 May 2019 23:53:27 +0200	[thread overview]
Message-ID: <20190529215327.GA20914@amd> (raw)
In-Reply-To: <nycvar.YFH.7.76.1905292327080.1962@cbobk.fhfr.pm>

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On Wed 2019-05-29 23:27:34, Jiri Kosina wrote:
> On Wed, 29 May 2019, Pavel Machek wrote:
> 
> > > As explained in
> > > 
> > > 	0cc3cd21657b ("cpu/hotplug: Boot HT siblings at least once")
> > > 
> > > we always, no matter what, have to bring up x86 HT siblings during boot at
> > > least once in order to avoid first MCE bringing the system to its
> > > knees.
> > 
> > 
> > > Cc: stable@vger.kernel.org # v4.19+
> > > Debugged-by: Thomas Gleixner <tglx@linutronix.de>
> > > Fixes: 0cc3cd21657b ("cpu/hotplug: Boot HT siblings at least once")
> > > Signed-off-by: Jiri Kosina <jkosina@suse.cz>
> > 
> > Acked-by: Pavel Machek <pavel@ucw.cz>
> > 
> > But I'm less sure if this is -stable material. Is reverting
> > 0cc3cd21657be04cb0559fe8063f2130493f92cf in -stable an option?
> 
> Well, without that commit, first MCE to come kills nosmt system.

...which is same situation 4.9-stable and 4.14-stable lives with for a
long long time, right?

But you are right, reverting 0cc3cd21657b does not look like good
option :-(.


									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

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  reply	other threads:[~2019-05-29 21:53 UTC|newest]

Thread overview: 47+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-28 21:31 [PATCH] x86/power: Fix 'nosmt' vs. hibernation triple fault during resume Jiri Kosina
2019-05-29  8:06 ` Rafael J. Wysocki
2019-05-29  9:03 ` Peter Zijlstra
2019-05-29 10:32 ` [PATCH v2] " Jiri Kosina
2019-05-29 12:02   ` Peter Zijlstra
2019-05-29 16:10   ` Josh Poimboeuf
2019-05-29 16:26     ` Jiri Kosina
2019-05-29 17:00       ` Peter Zijlstra
2019-05-29 17:15         ` Thomas Gleixner
2019-05-29 17:17       ` Josh Poimboeuf
2019-05-29 17:29         ` Jiri Kosina
2019-05-29 18:02           ` Jiri Kosina
2019-05-29 20:26 ` [PATCH v3] " Jiri Kosina
2019-05-29 21:25   ` Pavel Machek
2019-05-29 21:27     ` Jiri Kosina
2019-05-29 21:53       ` Pavel Machek [this message]
2019-05-29 22:09 ` [PATCH v4] " Jiri Kosina
2019-05-30  8:46   ` Rafael J. Wysocki
2019-05-30 21:27     ` Thomas Gleixner
2019-05-30 21:38       ` Rafael J. Wysocki
2019-05-30 23:38         ` Josh Poimboeuf
2019-05-30 23:42           ` Jiri Kosina
2019-05-31  5:14             ` Josh Poimboeuf
2019-05-31  8:26               ` Rafael J. Wysocki
2019-05-31  8:47               ` Jiri Kosina
2019-05-31  8:57                 ` Rafael J. Wysocki
2019-05-31 14:24                   ` Andy Lutomirski
2019-05-31 14:31                     ` Jiri Kosina
2019-05-31 14:33                       ` Jiri Kosina
2019-05-31 14:46                       ` Andy Lutomirski
2019-05-31 14:54                         ` Jiri Kosina
2019-05-31 15:26                           ` Josh Poimboeuf
2019-05-31 15:41                             ` Jiri Kosina
2019-05-31 16:19                               ` Josh Poimboeuf
2019-05-31 16:51                                 ` Andy Lutomirski
2019-05-31 18:11                                   ` Josh Poimboeuf
2019-06-03 10:03                                 ` Rafael J. Wysocki
2019-05-31 16:23                           ` Andy Lutomirski
2019-05-31 21:05                             ` Jiri Kosina
2019-05-31 21:22                               ` Andy Lutomirski
2019-06-03 14:23                                 ` Sean Christopherson
2019-06-03 15:24                                   ` Jiri Kosina
2019-06-03 16:18                                     ` Sean Christopherson
2019-05-31 12:09               ` Jiri Kosina
2019-05-31 14:51               ` Jiri Kosina
2019-05-31 12:18             ` Pavel Machek
2019-05-30 10:47   ` Pavel Machek

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