linux-kernel - Re: [PATCH 4/6] x86-mce: Add spinlocks to prevent duplicated MCP and CMCI reports.

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Message-ID: <CAFQmdRZ0ZKBV2oxq1Re==x96_rrg1u4WAh7WdGe+zvE3dzqo0A@mail.gmail.com>
Date:	Wed, 9 Jul 2014 14:56:40 -0700
From:	Havard Skinnemoen <hskinnemoen@...gle.com>
To:	"Luck, Tony" <tony.luck@...el.com>
Cc:	Borislav Petkov <bp@...en8.de>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Ewout van Bekkum <ewout@...gle.com>
Subject: Re: [PATCH 4/6] x86-mce: Add spinlocks to prevent duplicated MCP and
 CMCI reports.

On Wed, Jul 9, 2014 at 1:47 PM, Luck, Tony <tony.luck@...el.com> wrote:
>                 if (!(flags & MCP_UC) &&
> -                   (m.status & (mca_cfg.ser ? MCI_STATUS_S : MCI_STATUS_UC)))
> +                   (m.status & (mca_cfg.ser ? MCI_STATUS_S : MCI_STATUS_UC))) {
> +                       spin_unlock_irqrestore(&mce_banks[i].poll_spinlock,
> +                                              irq_flags);
>                         continue;
> +               }
>
> Perhaps move this test for UC up to before you grab the lock?

Will do, thanks.

Havard
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