linux-kernel - Re: [PATCH 5/5] doc: Add documentation for the User Mode Driver management library

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Message-ID: <ZBr1yGQtNIXsgRYS@debian.me>
Date:   Wed, 22 Mar 2023 19:34:16 +0700
From:   Bagas Sanjaya <bagasdotme@...il.com>
To:     Roberto Sassu <roberto.sassu@...weicloud.com>, corbet@....net,
        ast@...nel.org, daniel@...earbox.net, andrii@...nel.org,
        martin.lau@...ux.dev, song@...nel.org, yhs@...com,
        john.fastabend@...il.com, kpsingh@...nel.org, sdf@...gle.com,
        haoluo@...gle.com, jolsa@...nel.org, davem@...emloft.net,
        edumazet@...gle.com, kuba@...nel.org, pabeni@...hat.com,
        dsahern@...nel.org, shuah@...nel.org, brauner@...nel.org
Cc:     linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
        bpf@...r.kernel.org, netdev@...r.kernel.org,
        linux-kselftest@...r.kernel.org, ebiederm@...ssion.com,
        mcgrof@...nel.org, Roberto Sassu <roberto.sassu@...wei.com>
Subject: Re: [PATCH 5/5] doc: Add documentation for the User Mode Driver
 management library

On Fri, Mar 17, 2023 at 03:52:40PM +0100, Roberto Sassu wrote:
> +The `UMD Manager` is the frontend interface to any user or
> +kernel-originated request. It invokes the `UMD Loader` to start the
> +`UMD Handler`, and communicates with the latter to satisfy the request.
> +
> +The `UMD Loader` is merely responsible to extract the `user binary` from
> +the kernel module, copy it to a tmpfs filesystem, fork the current process,
> +start the `UMD Handler`, and create a pipe for the communication between
> +the `UMD Manager` and the `UMD Handler`.
> +
> +The `UMD Handler` reads requests from the `UMD Manager`, processes them
> +internally, and sends the response to it.

I think you can write out the full forms (UMD manager, UMD loader, and
UMD handler) once and for subsequent mentions of these, UMD can be
omitted, since the manager/loader/handler will obviously refers to the
UMD one.

Otherwise LGTM, thanks!

Reviewed-by: Bagas Sanjaya <bagasdotme@...il.com>

-- 
An old man doll... just what I always wanted! - Clara

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