linux-kernel - Re: One-line patch: Make ACPI provide CEDT table

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Message-ID: <CAJZ5v0hSBZKu4+g-hj6H7+H=-JcF0T79HYiXmZFYB5gAQZ60WQ@mail.gmail.com>
Date:   Wed, 12 Jan 2022 15:46:20 +0100
From:   "Rafael J. Wysocki" <rafael@...nel.org>
To:     Robert Kiraly <me@...dcoder.com>
Cc:     Linux PM <linux-pm@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Len Brown <lenb@...nel.org>,
        "Rafael J. Wysocki" <rafael@...nel.org>
Subject: Re: One-line patch: Make ACPI provide CEDT table

On Wed, Jan 12, 2022 at 6:20 AM Robert Kiraly <me@...dcoder.com> wrote:
>
> The attached patch is a one-line change to linux-pm 5.16-rc8.
>
> The patch simply adds ACPI_SIG_CEDT to table_sigs[] in
> "drivers/acpi/tables.c".
>
> Presently, CXL code isn't able to make use of the CEDT table. Subsequent
> to the change, the CEDT table can be used.
>
> If a developer plans to use the CEDT table to program the CXL ports,
> this change is needed. Otherwise, it isn't expected to make a difference.
>
> If this should go to linux-acpi as opposed to linux-pm, please excuse
> the error.

Yes, it should, but please see this PR too:

https://patchwork.kernel.org/project/linux-acpi/patch/CAPcyv4j0NfC4RKr=VU6yUKrqVRKdAer9YeSezRctpp-k31iAzA@mail.gmail.com/