linux-kernel - Re: [RFC PATCH 5/5] GHES: Make NMI handler have a single reader

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Message-ID: <20150427202349.GM28871@pd.tnic>
Date:	Mon, 27 Apr 2015 22:23:50 +0200
From:	Borislav Petkov <bp@...en8.de>
To:	"Luck, Tony" <tony.luck@...el.com>
Cc:	Borislav Petkov <bp@...e.de>, Jiri Kosina <jkosina@...e.cz>,
	linux-edac <linux-edac@...r.kernel.org>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Len Brown <lenb@...nel.org>,
	Tomasz Nowicki <tomasz.nowicki@...aro.org>,
	"Chen, Gong" <gong.chen@...ux.intel.com>,
	Wolfram Sang <wsa@...-dreams.de>,
	"Zheng, Lv" <lv.zheng@...el.com>,
	Naoya Horiguchi <n-horiguchi@...jp.nec.com>,
	"linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"Huang, Ying" <ying.huang@...el.com>
Subject: Re: [RFC PATCH 5/5] GHES: Make NMI handler have a single reader

On Thu, Apr 23, 2015 at 06:00:15PM +0000, Luck, Tony wrote:
> > I think we should apply this.
> >
> > Here's why: nothing in the ghes_notify_nmi() handler does CPU-specific
> > accesses
> 
> This looks to be true.
> 
> > Tony, objections?
> 
> No objections.

Thanks, queued for 4.2, pending one last test I'm doing on a machine
which says

[   24.332560] INFO: NMI handler (ghes_notify_nmi) took too long to run: 3.265 msecs
[   24.332567] INFO: NMI handler (ghes_notify_nmi) took too long to run: 5.946 msecs
[   24.332568] INFO: NMI handler (ghes_notify_nmi) took too long to run: 5.948 msecs

during boot.

-- 
Regards/Gruss,
    Boris.

ECO tip #101: Trim your mails when you reply.
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