From: Borislav Petkov <bp@suse.de>
To: "Verma, Vishal L" <vishal.l.verma@intel.com>
Cc: "Williams, Dan J" <dan.j.williams@intel.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-nvdimm@lists.01.org" <linux-nvdimm@ml01.01.org>,
"Luck, Tony" <tony.luck@intel.com>,
"ross.zwisler@linux.intel.com" <ross.zwisler@linux.intel.com>,
"x86@kernel.org" <x86@kernel.org>
Subject: Re: [RFC PATCH] x86, mce: change the mce notifier to 'blocking' from 'atomic'
Date: Wed, 12 Apr 2017 23:13:03 +0200 [thread overview]
Message-ID: <20170412211302.3d2cxe34sgiu3dag@pd.tnic> (raw)
In-Reply-To: <1492028744.2738.14.camel@intel.com>
On Wed, Apr 12, 2017 at 08:27:05PM +0000, Verma, Vishal L wrote:
> But isn't the atomic notifier call chain always called in atomic
> context?
No, it isn't. We're calling it in normal process context in
mce_gen_pool_process() too.
So this early exit will avoid any sleeping in atomic context. And since
there's nothing you can do about the errors reported in atomic context,
we can actually use that fact.
--
Regards/Gruss,
Boris.
SUSE Linux GmbH, GF: Felix Imendörffer, Jane Smithard, Graham Norton, HRB 21284 (AG Nürnberg)
--
next prev parent reply other threads:[~2017-04-12 21:13 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-04-11 22:44 [RFC PATCH] x86, mce: change the mce notifier to 'blocking' from 'atomic' Vishal Verma
2017-04-12 9:14 ` Borislav Petkov
2017-04-12 19:59 ` Vishal Verma
2017-04-12 20:22 ` Borislav Petkov
2017-04-12 20:27 ` Verma, Vishal L
2017-04-12 20:52 ` Luck, Tony
2017-04-12 20:55 ` Dan Williams
2017-04-12 21:12 ` Thomas Gleixner
2017-04-12 21:19 ` Luck, Tony
2017-04-12 21:47 ` Borislav Petkov
2017-04-12 22:16 ` Borislav Petkov
2017-04-12 22:26 ` Luck, Tony
2017-04-12 22:29 ` Borislav Petkov
2017-04-13 11:31 ` Borislav Petkov
2017-04-13 12:12 ` Borislav Petkov
2017-04-18 16:28 ` Luck, Tony
2017-04-21 21:39 ` Verma, Vishal L
2017-04-12 21:13 ` Borislav Petkov [this message]
2017-04-12 21:50 ` Thomas Gleixner
2017-04-12 22:42 ` Paul E. McKenney
2017-04-12 23:45 ` Paul E. McKenney
2017-04-13 14:34 ` Paul E. McKenney
2017-04-18 20:27 ` [tip:ras/urgent] x86/mce: Make the MCE notifier a blocking one tip-bot for Vishal Verma
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