linux-kernel - Re: [PATCH v2 4/7] ghes_edac: avoid multiple calls to dmi

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Message-ID: <20170814170552.j3lhzvnwlpz75y4g@pd.tnic>
Date:   Mon, 14 Aug 2017 19:05:52 +0200
From:   Borislav Petkov <bp@...en8.de>
To:     "Kani, Toshimitsu" <toshi.kani@....com>
Cc:     "linux-edac@...r.kernel.org" <linux-edac@...r.kernel.org>,
        "lenb@...nel.org" <lenb@...nel.org>,
        "mchehab@...nel.org" <mchehab@...nel.org>,
        "tony.luck@...el.com" <tony.luck@...el.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "rjw@...ysocki.net" <rjw@...ysocki.net>,
        "linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>
Subject: Re: [PATCH v2 4/7] ghes_edac: avoid multiple calls to dmi_walk()

On Mon, Aug 14, 2017 at 04:48:57PM +0000, Kani, Toshimitsu wrote:
> Right, but the issue is how [ghes_edac_]report_mem_error() protects
> from possible concurrent calls from multiple GHES sources when there is
> only a single mci.

Do you know of an actual firmware reporting multiple errors concurrently?

GHES v2 even needs to ACK the current error first before it can read the
next one.

-- 
Regards/Gruss,
    Boris.

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