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Date:   Thu, 1 Sep 2022 11:38:06 +0100
From:   Mark Brown <broonie@kernel.org>
To:     Wei Yongjun <weiyongjun1@huawei.com>
Cc:     Steven Rostedt <rostedt@goodmis.org>,
        Ingo Molnar <mingo@redhat.com>, linux-kernel@vger.kernel.org,
        linux-spi@vger.kernel.org,
        Vincent Whitchurch <vincent.whitchurch@axis.com>
Subject: Re: [PATCH -next 0/4] spi: Introduce BPF based SPI mockup controller
Message-ID: <YxCLjlTZS7Ltahju@sirena.org.uk>
References: <20220826144341.532265-1-weiyongjun1@huawei.com>
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On Tue, Aug 30, 2022 at 08:09:16PM +0100, Mark Brown wrote:

> There was a series in the past year or so from someone
> implementing a similarish idea but rather than using BPF they
> provided a framework for writing device emulations in qemu with
> a simplified Python framework.  That seemed like a more obvious
> direction here.  They were initially focusing on I2C but it's a
> similar space.  Unfortunately I'm drawing a blank on who was
> working on it or the name of the framework so I can't give a
> useful reference here.  Their direction was towards having
> something that could also be used to validate what the driver was
> doing to the device from the device's perspective.  I do know it
> was written up on LWN.  Hopefully someone else will remember what
> I'm talking about from this vauge description.

The framework I was thinking of is called roadtest from Vincent
Whitchurch who I've copied in here.

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