From: "Luck, Tony" <tony.luck@intel.com>
To: Borislav Petkov <bp@suse.de>
Cc: "Chen, Gong" <gong.chen@linux.intel.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: RE: [PATCH 4/4 Rebase] x86, MCE: Avoid potential deadlock in MCE context
Date: Mon, 8 Jun 2015 20:03:08 +0000 [thread overview]
Message-ID: <3908561D78D1C84285E8C5FCA982C28F32A8E51A@ORSMSX114.amr.corp.intel.com> (raw)
In-Reply-To: <20150608134127.GE5877@pd.tnic>
[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #1: Type: text/plain; charset="utf-8", Size: 750 bytes --]
> So AFAINM, we want to do MCE work only after we've logged something to
> the genpool. So we can do the much simplified thing below and kick the
> workqueue from within mce_log() as everything that logs, calls that
> function.
>
> Tony, any concerns?
@@ -156,7 +156,8 @@ void mce_log(struct mce *mce)
/* Emit the trace record: */
trace_mce_record(mce);
- atomic_notifier_call_chain(&x86_mce_decoder_chain, 0, mce);
+ mce_genpool_add(mce);
+ irq_work_queue(&mce_irq_work);
Is it safe to call irq_work_queue() from MCE context? If that is OK, then
I don't have any concerns.
-Tony
ÿôèº{.nÇ+·®+%Ëÿ±éݶ\x17¥wÿº{.nÇ+·¥{±þG«éÿ{ayº\x1dÊÚë,j\a¢f£¢·hïêÿêçz_è®\x03(éÝ¢j"ú\x1a¶^[m§ÿÿ¾\a«þG«éÿ¢¸?¨èÚ&£ø§~á¶iOæ¬z·vØ^\x14\x04\x1a¶^[m§ÿÿÃ\fÿ¶ìÿ¢¸?I¥
next prev parent reply other threads:[~2015-06-08 20:04 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-20 19:35 MCE ring buffer management (Rebase) Chen, Gong
2015-05-20 19:35 ` [PATCH 1/4 Rebase] x86, MCE: Provide a lock-less memory pool to save error record Chen, Gong
2015-05-20 10:36 ` Borislav Petkov
2015-05-22 21:06 ` Chen, Gong
2015-05-22 8:17 ` Borislav Petkov
2015-05-20 19:35 ` [PATCH 2/4 Rebase] x86, MCE: Don't use percpu for MCE workqueue/irq_work Chen, Gong
2015-05-20 19:35 ` [PATCH 3/4 Rebase] x86, MCE: Remove mce_ring for SRAO error Chen, Gong
2015-05-20 19:35 ` [PATCH 4/4 Rebase] x86, MCE: Avoid potential deadlock in MCE context Chen, Gong
2015-05-20 9:28 ` Borislav Petkov
2015-05-22 21:12 ` Chen, Gong
2015-05-22 9:09 ` Borislav Petkov
2015-06-08 13:41 ` Borislav Petkov
2015-06-08 20:03 ` Luck, Tony [this message]
2015-06-08 20:26 ` Borislav Petkov
2015-06-11 8:27 ` Borislav Petkov
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=3908561D78D1C84285E8C5FCA982C28F32A8E51A@ORSMSX114.amr.corp.intel.com \
--to=tony.luck@intel.com \
--cc=bp@suse.de \
--cc=gong.chen@linux.intel.com \
--cc=linux-kernel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.