From: Paolo Bonzini <pbonzini@redhat.com>
To: "Marc-André Lureau" <marcandre.lureau@gmail.com>,
"Philippe Mathieu-Daudé" <philmd@linaro.org>
Cc: "Dr. David Alan Gilbert" <dave@treblig.org>,
"Peter Maydell" <peter.maydell@linaro.org>,
qemu-devel@nongnu.org, "Michael S. Tsirkin" <mst@redhat.com>,
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Subject: Re: [PATCH] char: rename CharBackend->CharFrontend
Date: Tue, 21 Oct 2025 17:33:35 +0200 [thread overview]
Message-ID: <61198e34-d7cf-43e6-b6d2-15cc423f5fd7@redhat.com> (raw)
In-Reply-To: <CAJ+F1CKG1G=5o+bDBXmLm6ywWDD19z1OFBwQQnDMxMFytFQ2SQ@mail.gmail.com>
On 10/21/25 16:27, Marc-André Lureau wrote:
>>>>> I always thought the "frontend" was the device the guest
>>>>> saw (the 16650 UART or whatever). invocation.html has bits
>>>>> talking about "virtio hvc console frontend device" which
>>>>> seem like they also use that terminology.>>
>> Isn't it
>>
>> - backend -> host adapter
>> - frontend -> implementation used by guest
The frontend is whatever talks to the backend. From QEMU's point of
view it's the CharFrontend (which consists of a Chardev*, i.e. the
backend, and some data identifying a specific frontend), from the user
it could be /dev/hvc0 or whatever.
> Sort of, but I think it's too restrictive to name them after "host"
> and "guest", as they also have different purposes than strictly VM
> components/side usage.
>
> I believe talking about backend and frontend is usually the preferred
> convention.
Yes, I agree.
Paolo
next prev parent reply other threads:[~2025-10-21 15:34 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-10-21 12:25 [PATCH] char: rename CharBackend->CharFrontend marcandre.lureau
2025-10-21 12:53 ` Peter Maydell
2025-10-21 13:49 ` Dr. David Alan Gilbert
2025-10-21 13:58 ` Marc-André Lureau
2025-10-21 14:23 ` Philippe Mathieu-Daudé
2025-10-21 14:27 ` Marc-André Lureau
2025-10-21 15:33 ` Paolo Bonzini [this message]
2025-10-21 13:25 ` BALATON Zoltan
2025-10-21 13:30 ` Marc-André Lureau
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