linux-kernel - Re: [PATCH] virtio_mmio: add ACPI probing

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Message-ID: <CAFEAcA9dHQkSyz7_V6Mb-gr=bA9BUdg4sGCDG7mwK3yiau9=Gw@mail.gmail.com>
Date:	Tue, 28 Jul 2015 22:10:14 +0100
From:	Peter Maydell <peter.maydell@...aro.org>
To:	G Gregory <graeme.gregory@...aro.org>
Cc:	"Michael S. Tsirkin" <mst@...hat.com>,
	"virtualization@...ts.linux-foundation.org" 
	<virtualization@...ts.linux-foundation.org>,
	lkml - Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Shannon Zhao <shannon.zhao@...aro.org>,
	Alex Bennée <alex.bennee@...aro.org>
Subject: Re: [PATCH] virtio_mmio: add ACPI probing

On 28 July 2015 at 21:28, G Gregory <graeme.gregory@...aro.org> wrote:
> On 28 July 2015 at 21:12, Peter Maydell <peter.maydell@...aro.org> wrote:
>> Mmm. I'm not terribly happy about stuff being in QEMU before the
>> ACPI spec for it has been finalised. We should not be picking
>> stuff randomly on the fly...
>>
>> If we want to fix the ACPI IDs QEMU is using for 2.4 then we
>> really need to do that now (ie within the next day or two).
>>
> It is upto the owner of the QEMU prefix to allocate numbers. This is
> not an issue for ACPI spec at all.

I mean "the specification for how this device should be advertised
in an ACPI table". I don't care whether that's an official ACPI
consortium thing or something less official. The table is
constructed by QEMU and read by the kernel (and possibly
also by UEFI?), so everybody needs to agree on what the
string is...

thanks
-- PMM
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