linux-kernel - Re: [PATCH] EDAC: Expose node link in sysfs if CONFIG

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Message-ID: <20230516121018.GDZGNyqjm9YWQp2Of4@fat_crate.local>
Date:   Tue, 16 May 2023 14:10:18 +0200
From:   Borislav Petkov <bp@...en8.de>
To:     Yajun Deng <yajun.deng@...ux.dev>
Cc:     tony.luck@...el.com, james.morse@....com, mchehab@...nel.org,
        rric@...nel.org, corbet@....net, linux-kernel@...r.kernel.org,
        linux-edac@...r.kernel.org, linux-doc@...r.kernel.org
Subject: Re: [PATCH] EDAC: Expose node link in sysfs if CONFIG_NUMA

On Tue, May 16, 2023 at 11:59:07AM +0000, Yajun Deng wrote:
> If we have '/sys/devices/system/node/node0/mc0', by comparing the number
> of dimm and MemTotal in meminfo. It is easy to know that the dimm didn't 
> recognized whether it belonged to this NUMA node or not.

mc != NUMA node.

In any case, EDAC's purpose is not for finding lost memory. Fix your
system's configuration so that no DIMMs remain unrecognized at boot.

-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette