linux-kernel - Re: [PATCH v14] i2c: virtio: add a virtio i2c frontend driver

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Message-ID: <16bed918-f26a-cc20-0566-54c70d453179@intel.com>
Date:   Wed, 14 Jul 2021 16:33:54 +0800
From:   Jie Deng <jie.deng@...el.com>
To:     "Michael S. Tsirkin" <mst@...hat.com>
Cc:     linux-i2c@...r.kernel.org,
        virtualization@...ts.linux-foundation.org,
        linux-kernel@...r.kernel.org, wsa@...nel.org,
        wsa+renesas@...g-engineering.com, arnd@...db.de,
        jasowang@...hat.com, andriy.shevchenko@...ux.intel.com,
        yu1.wang@...el.com, shuo.a.liu@...el.com, conghui.chen@...el.com,
        viresh.kumar@...aro.org, stefanha@...hat.com,
        gregkh@...uxfoundation.org
Subject: Re: [PATCH v14] i2c: virtio: add a virtio i2c frontend driver

On 2021/7/13 23:38, Michael S. Tsirkin wrote:

>
> I think we should tweak this such that we add multiple buffers but
> only make them visible to host after all add commands were successful.
> With split this is possible by deffering avail idx update,
> with packed by deferring update of the avail bit in the descriptor.
> I'll write a patch to add an API like that to virtio, then we
> can switch to that.
>

That's great !  Looking forward to seeing that API.