From: Borislav Petkov <bp@alien8.de>
To: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: "Luck, Tony" <tony.luck@intel.com>,
linux-kernel@vger.kernel.org, rt@linutronix.de,
linux-edac@vger.kernel.org, x86@kernel.org,
Thomas Gleixner <tglx@linutronix.de>
Subject: Re: [PATCH 22/25] x86/mcheck: Do the init in one place
Date: Tue, 8 Nov 2016 10:23:02 +0100 [thread overview]
Message-ID: <20161108092302.wraci5m2cxqozlew@pd.tnic> (raw)
In-Reply-To: <20161107201224.7xazmhgm7bogkrw5@pd.tnic>
On Mon, Nov 07, 2016 at 09:12:24PM +0100, Borislav Petkov wrote:
> On Mon, Nov 07, 2016 at 10:55:24AM -0800, Luck, Tony wrote:
> > I don't think that helps as much as you'd like it to help (at
> > least on Intel). A broadcast machine check that finds the boot
> > CPU has set CR4[MCE]=1 is still going to end up in reset if any
> > other CPU still has CR4[MCE]=0
>
> By leaving/moving the setting of CR4 earlier on all cores, we'll
> at least make the possible window for such potential resets a lot
> smaller...
... and in general, I'm still unsure about *why* we need this change for
hotplug. bigeasy, can you please clarify first?
Thanks.
--
Regards/Gruss,
Boris.
Good mailing practices for 400: avoid top-posting and trim the reply.
next prev parent reply other threads:[~2016-11-08 9:23 UTC|newest]
Thread overview: 108+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-03 14:49 cpu hotplug: convert more drivers (batch #4) Sebastian Andrzej Siewior
2016-11-03 14:49 ` [PATCH 01/25] fs/buffer: Convert to hotplug state machine Sebastian Andrzej Siewior
2016-11-09 22:52 ` [tip:smp/hotplug] " tip-bot for Sebastian Andrzej Siewior
2016-11-10 16:24 ` [PATCH 01/25] " Al Viro
2016-11-10 16:31 ` Thomas Gleixner
2016-11-03 14:49 ` [PATCH 02/25] kernel/printk: " Sebastian Andrzej Siewior
2016-11-09 22:52 ` [tip:smp/hotplug] " tip-bot for Sebastian Andrzej Siewior
2016-11-03 14:49 ` [PATCH 03/25] mm/memcg: " Sebastian Andrzej Siewior
2016-11-09 22:53 ` [tip:smp/hotplug] " tip-bot for Sebastian Andrzej Siewior
2016-11-03 14:50 ` [PATCH 04/25] lib/percpu_counter: " Sebastian Andrzej Siewior
2016-11-09 22:53 ` [tip:smp/hotplug] " tip-bot for Sebastian Andrzej Siewior
2016-11-03 14:50 ` [PATCH 05/25] lib/radix-tree: " Sebastian Andrzej Siewior
2016-11-09 22:54 ` [tip:smp/hotplug] " tip-bot for Sebastian Andrzej Siewior
2016-11-03 14:50 ` [PATCH 06/25] mm/page_alloc: " Sebastian Andrzej Siewior
2016-11-09 22:54 ` [tip:smp/hotplug] " tip-bot for Sebastian Andrzej Siewior
2016-11-03 14:50 ` [PATCH 07/25] mm/vmscan: " Sebastian Andrzej Siewior
2016-11-09 22:55 ` [tip:smp/hotplug] " tip-bot for Sebastian Andrzej Siewior
2016-11-03 14:50 ` [PATCH 08/25] net/dev: " Sebastian Andrzej Siewior
2016-11-09 22:55 ` [tip:smp/hotplug] " tip-bot for Sebastian Andrzej Siewior
2016-11-03 14:50 ` [PATCH 09/25] net/flowcache: " Sebastian Andrzej Siewior
2016-11-09 22:56 ` [tip:smp/hotplug] " tip-bot for Sebastian Andrzej Siewior
2016-11-03 14:50 ` [PATCH 10/25] s390/smp: Make cpu notifier symetric Sebastian Andrzej Siewior
2016-11-04 14:22 ` Heiko Carstens
2016-11-04 14:41 ` [PATCH 10/25 v2] " Sebastian Andrzej Siewior
2016-11-09 22:56 ` [tip:smp/hotplug] " tip-bot for Thomas Gleixner
2016-11-03 14:50 ` [PATCH 11/25] s390/smp: Convert to hotplug state machine Sebastian Andrzej Siewior
2016-11-04 14:34 ` Heiko Carstens
2016-11-04 14:45 ` [PATCH 11/25 v2] " Sebastian Andrzej Siewior
2016-11-09 22:57 ` [tip:smp/hotplug] " tip-bot for Sebastian Andrzej Siewior
2016-11-03 14:50 ` [PATCH 12/25] drivers base/cacheinfo: " Sebastian Andrzej Siewior
2016-11-09 22:57 ` [tip:smp/hotplug] " tip-bot for Sebastian Andrzej Siewior
2016-11-03 14:50 ` [PATCH 13/25] drivers base/topology: " Sebastian Andrzej Siewior
2016-11-09 22:57 ` [tip:smp/hotplug] " tip-bot for Sebastian Andrzej Siewior
2016-11-03 14:50 ` [PATCH 14/25] ia64/err-inject: " Sebastian Andrzej Siewior
2016-11-03 14:50 ` Sebastian Andrzej Siewior
2016-11-09 22:58 ` [tip:smp/hotplug] " tip-bot for Sebastian Andrzej Siewior
2016-11-03 14:50 ` [PATCH 15/25] ia64/palinfo: " Sebastian Andrzej Siewior
2016-11-03 14:50 ` Sebastian Andrzej Siewior
2016-11-09 22:58 ` [tip:smp/hotplug] " tip-bot for Sebastian Andrzej Siewior
2016-11-03 14:50 ` [PATCH 16/25] ia64/salinfo: " Sebastian Andrzej Siewior
2016-11-03 14:50 ` Sebastian Andrzej Siewior
2016-11-03 15:45 ` kbuild test robot
2016-11-03 15:45 ` kbuild test robot
2016-11-03 17:31 ` [PATCH 16/25 v2] " Sebastian Andrzej Siewior
2016-11-03 17:31 ` Sebastian Andrzej Siewior
2016-11-09 22:59 ` [tip:smp/hotplug] " tip-bot for Sebastian Andrzej Siewior
2016-11-03 16:22 ` [PATCH 16/25] " kbuild test robot
2016-11-03 16:22 ` kbuild test robot
2016-11-03 14:50 ` [PATCH 17/25] ia64/topology: " Sebastian Andrzej Siewior
2016-11-03 14:50 ` Sebastian Andrzej Siewior
2016-11-03 15:53 ` kbuild test robot
2016-11-03 15:53 ` kbuild test robot
2016-11-03 17:33 ` [PATCH 17/25 v2] " Sebastian Andrzej Siewior
2016-11-03 17:33 ` Sebastian Andrzej Siewior
2016-11-09 22:59 ` [tip:smp/hotplug] " tip-bot for Sebastian Andrzej Siewior
2016-11-03 14:50 ` [PATCH 18/25] x86/mcheck: Move threshold_create_device() Sebastian Andrzej Siewior
2016-11-07 10:32 ` Borislav Petkov
2016-11-03 14:50 ` [PATCH 19/25] x86/mcheck: Explicit cleanup on failure in mce_amd Sebastian Andrzej Siewior
2016-11-03 14:50 ` [PATCH 20/25] x86/mcheck: Be prepared for a rollback back to the ONLINE state Sebastian Andrzej Siewior
2016-11-07 10:32 ` Borislav Petkov
2016-11-07 10:40 ` Sebastian Andrzej Siewior
2016-11-07 12:31 ` Borislav Petkov
2016-11-07 17:23 ` Sebastian Andrzej Siewior
2016-11-03 14:50 ` [PATCH 21/25] x86/mcheck: Split threshold_cpu_callback into two callbacks Sebastian Andrzej Siewior
2016-11-07 13:20 ` Borislav Petkov
2016-11-07 13:25 ` Sebastian Andrzej Siewior
2016-11-07 15:07 ` Borislav Petkov
2016-11-07 15:14 ` Sebastian Andrzej Siewior
2016-11-07 17:26 ` Sebastian Andrzej Siewior
2016-11-07 18:19 ` Borislav Petkov
2016-11-03 14:50 ` [PATCH 22/25] x86/mcheck: Do the init in one place Sebastian Andrzej Siewior
2016-11-07 18:45 ` Borislav Petkov
2016-11-07 18:55 ` Luck, Tony
2016-11-07 20:12 ` Borislav Petkov
2016-11-08 9:23 ` Borislav Petkov [this message]
2016-11-09 14:22 ` Sebastian Andrzej Siewior
2016-11-09 15:38 ` Borislav Petkov
2016-11-09 16:24 ` Sebastian Andrzej Siewior
2016-11-09 17:01 ` Borislav Petkov
2016-11-09 17:22 ` Sebastian Andrzej Siewior
2016-11-09 18:37 ` Luck, Tony
2016-11-10 9:00 ` Sebastian Andrzej Siewior
2016-11-10 9:18 ` Borislav Petkov
2016-11-10 17:44 ` x86/mcheck: convert to hotplug state engine, take #2 Sebastian Andrzej Siewior
2016-11-10 17:44 ` [PATCH 1/7] x86/mcheck: Move threshold_create_device() Sebastian Andrzej Siewior
2016-11-16 8:39 ` [tip:smp/hotplug] " tip-bot for Sebastian Andrzej Siewior
2016-11-10 17:44 ` [PATCH 2/7] x86/mcheck: Explicit cleanup on failure in mce_amd Sebastian Andrzej Siewior
2016-11-16 8:40 ` [tip:smp/hotplug] " tip-bot for Sebastian Andrzej Siewior
2016-11-10 17:44 ` [PATCH 3/7] x86/mcheck: Be prepared for a rollback back to the ONLINE state Sebastian Andrzej Siewior
2016-11-16 8:40 ` [tip:smp/hotplug] " tip-bot for Sebastian Andrzej Siewior
2016-11-10 17:44 ` [PATCH 4/7] x86/mcheck: Split threshold_cpu_callback into two callbacks Sebastian Andrzej Siewior
2016-11-16 8:41 ` [tip:smp/hotplug] " tip-bot for Sebastian Andrzej Siewior
2016-11-10 17:44 ` [PATCH 5/7] x86/mcheck: reorganize the hotplug callbacks Sebastian Andrzej Siewior
2016-11-11 18:44 ` Borislav Petkov
2016-11-11 19:36 ` Sebastian Andrzej Siewior
2016-11-11 19:57 ` Borislav Petkov
2016-11-14 10:47 ` [PATCH 5/7 v2] " Sebastian Andrzej Siewior
2016-11-16 8:41 ` [tip:smp/hotplug] x86/mcheck: Reorganize " tip-bot for Sebastian Andrzej Siewior
2016-11-10 17:44 ` [PATCH 6/7] x86/mcheck: Move CPU_ONLINE and CPU_DOWN_PREPARE to hotplug state machine Sebastian Andrzej Siewior
2016-11-16 8:42 ` [tip:smp/hotplug] " tip-bot for Sebastian Andrzej Siewior
2016-11-10 17:44 ` [PATCH 7/7] x86/mcheck: Move CPU_DEAD " Sebastian Andrzej Siewior
2016-11-11 20:18 ` Borislav Petkov
2016-11-16 8:42 ` [tip:smp/hotplug] " tip-bot for Sebastian Andrzej Siewior
2016-11-10 10:22 ` [PATCH 22/25] x86/mcheck: Do the init in one place Thomas Gleixner
2016-11-10 10:27 ` Sebastian Andrzej Siewior
2016-11-03 14:50 ` [PATCH 23/25] x86/mcheck: Make CPU_DOWN_PREPARE the counter part of CPU_STARTING Sebastian Andrzej Siewior
2016-11-03 14:50 ` [PATCH 24/25] x86/mcheck: Move CPU_ONLINE to hotplug state machine Sebastian Andrzej Siewior
2016-11-03 14:50 ` [PATCH 25/25] x86/mcheck: Move CPU_DEAD " Sebastian Andrzej Siewior
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