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From: Laszlo Ersek <lersek@redhat.com>
To: "Daniel P. Berrangé" <berrange@redhat.com>,
	"Dr. David Alan Gilbert" <dgilbert@redhat.com>
Cc: "mst@redhat.com" <mst@redhat.com>,
	"qemu-trivial@nongnu.org" <qemu-trivial@nongnu.org>,
	"qemu-devel@nongnu.org" <qemu-devel@nongnu.org>,
	"Markus Armbruster" <armbru@redhat.com>,
	"McMillan, Erich" <erich.mcmillan@hp.com>,
	"Philippe Mathieu-Daudé" <philmd@redhat.com>
Subject: Re: PATCH: Increase System Firmware Max Size
Date: Fri, 11 Sep 2020 18:06:27 +0200	[thread overview]
Message-ID: <d7d0d37e-4bba-ab82-783d-06463d78d9cf@redhat.com> (raw)
In-Reply-To: <20200911152353.GI1203593@redhat.com>

On 09/11/20 17:23, Daniel P. Berrangé wrote:

> I don't see why we should have this as a hard coded
> limit that is not runtime configurable.
> 
> IOW, why can't we keep our current default and provide a machine type
> property "firmware_max_size" which users can opt-in to setting if
> their particular firmware exceeds normal defaults. That won't impact
> us for migration compat in any way, and lets users have flexibility t
> do what they want.

Technically, this is fine, in my opinion.

My concerns (in distilled form, this time):

- The change increases maintenance burden.

- The change does not benefit most users of QEMU, as the intended guest
payload will not available to most of them at all (regardless of
licensing terms).

- The existence of the property may entice OVMF users to ask us to
enlarge the *current* OVMF firmware platform and to pack more stuff in
it. That is not OK. My counter-proposal ("please contribute a new
platform DSC/FDF under OvmfPkg, and assume co-reviewership for it")
would almost certainly not be acted upon.

That's all.

Thanks
Laszlo



  reply	other threads:[~2020-09-11 16:07 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-11  1:45 PATCH: Increase System Firmware Max Size McMillan, Erich
2020-09-11  7:55 ` Laszlo Ersek
2020-09-11  8:34   ` Dr. David Alan Gilbert
2020-09-11 14:53     ` Laszlo Ersek
2020-09-11 15:06       ` Dr. David Alan Gilbert
2020-09-11 15:22         ` McMillan, Erich via
2020-09-11 16:11           ` Laszlo Ersek
2020-09-11 15:23         ` Daniel P. Berrangé
2020-09-11 16:06           ` Laszlo Ersek [this message]
2020-09-11 16:21             ` Daniel P. Berrangé
2020-09-11 16:45               ` Laszlo Ersek
2020-09-11 15:57         ` Laszlo Ersek
2020-09-11 16:22           ` Dr. David Alan Gilbert
2020-09-11 16:53             ` Laszlo Ersek
2020-09-11 16:59               ` Dr. David Alan Gilbert
2020-09-11 17:51                 ` McMillan, Erich via
2020-09-15 19:09 ` McMillan, Erich
2020-09-15 19:10   ` McMillan, Erich via
2020-09-16  9:52     ` Laszlo Ersek
2020-09-16  9:56       ` Daniel P. Berrangé
2020-09-16 11:31         ` Laszlo Ersek
2020-09-16 11:43           ` Daniel P. Berrangé
2020-09-16 10:00       ` Laszlo Ersek

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