linux-kernel - Re: [PATCH V3 2/4] misc: vop: do not allocate and reassign the used ring

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Message-ID: <20201027151106.e4skr6dsbwvo4al6@axis.com>
Date:   Tue, 27 Oct 2020 16:11:06 +0100
From:   Vincent Whitchurch <vincent.whitchurch@...s.com>
To:     Sherry Sun <sherry.sun@....com>
CC:     "sudeep.dutt@...el.com" <sudeep.dutt@...el.com>,
        "ashutosh.dixit@...el.com" <ashutosh.dixit@...el.com>,
        Christoph Hellwig <hch@...radead.org>,
        "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
        "arnd@...db.de" <arnd@...db.de>, "kishon@...com" <kishon@...com>,
        "lorenzo.pieralisi@....com" <lorenzo.pieralisi@....com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        dl-linux-imx <linux-imx@....com>
Subject: Re: [PATCH V3 2/4] misc: vop: do not allocate and reassign the used
 ring

On Tue, Oct 27, 2020 at 08:05:43AM +0100, Sherry Sun wrote:
> Can you help test the patch about removing the codes of reassign used
> ring, and comment on the impact for Intel MIC platform?  Thanks for
> any help.

I don't have access to MIC hardware myself, either.

But this patch is quite certainly going to break it since guests using a
kernel without the patch will not work with hosts with a kernel with the
patch.