linux-kernel - Re: [RFC PATCH 0/7] vfio: Add alias region uapi for device feature

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Message-ID: <lrkyq8qhpbqlu.fsf@dev-dsk-mngyadam-1c-cb3f7548.eu-west-1.amazon.com>
Date: Sun, 5 Oct 2025 12:16:45 +0200
From: Mahmoud Nagy Adam <mngyadam@...zon.de>
To: David Matlack <dmatlack@...gle.com>
CC: <kvm@...r.kernel.org>, <alex.williamson@...hat.com>, <jgg@...pe.ca>,
	<kbusch@...nel.org>, <benh@...nel.crashing.org>, David Woodhouse
	<dwmw@...zon.co.uk>, <pravkmr@...zon.de>, <nagy@...aternagy.com>,
	<linux-kernel@...r.kernel.org>
Subject: Re: [RFC PATCH 0/7] vfio: Add alias region uapi for device feature

David Matlack <dmatlack@...gle.com> writes:
> On Wed, Sep 24, 2025 at 7:11 AM Mahmoud Adam <mngyadam@...zon.de> wrote:
>>
>> This adds two new region flags:
>> - VFIO_REGION_INFO_FLAG_ALIAS: set on alias regions.
>> - VFIO_REGION_INFO_FLAG_WC: indicates WC is in effect for that region.
>
> Once you settle on a uAPI, this would be a good candidate for some
> VFIO selftests coverage [1][2].

Yup, I was planning to do that after seeing the new addition of vfio
selftests. I have already a small test that I use for testing this. I
can clean it up & port it to fit in the vfio selftest, once there is
some momentum on this series. Thanks David.

-MNAdam

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