linux-kernel - Re: [PATCH v20 00/15] EDAC: Scrub: introduce generic EDAC RAS control feature driver + CXL/ACPI-RAS2 drivers

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Message-ID: <6d8e89d4-e0b8-4e89-8a18-6f9d4f2989ee@os.amperecomputing.com>
Date: Thu, 6 Mar 2025 10:18:19 -0800
From: Daniel Ferguson <danielf@...amperecomputing.com>
To: shiju.jose@...wei.com, linux-edac@...r.kernel.org,
 linux-cxl@...r.kernel.org, linux-acpi@...r.kernel.org, linux-mm@...ck.org,
 linux-kernel@...r.kernel.org
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Subject: Re: [PATCH v20 00/15] EDAC: Scrub: introduce generic EDAC RAS control
 feature driver + CXL/ACPI-RAS2 drivers

>  +--------------+-----------+-----------+-----------+-----------+
>  |              |           |           |           |           |
>  | Setting      | Supported | Supported | No        | No        |
>  | scrub rate   |           |           |           |           |
>  |              |           |           |           |           |
>  +--------------+-----------+-----------+-----------+-----------+
>  |              |           |           |           |           |
>  | Unit for     | Not       | in hours  | No        | No        |
>  | scrub rate   | Defined   |           |           |           |
>  |              |           |           |           |           |

It is our opinion that the Unit for scrub rate should be unit agnostic
(implementation defined), and definitely not specified in Hours. We believe that
the spirit of the RAS2 scrub rate was intended to be implementation defined.

It takes our hardware less than a few seconds to scrub a ton of memory.