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Tsirkin" Cc: Jie Deng , linux-i2c@vger.kernel.org, virtualization@lists.linux-foundation.org, linux-kernel@vger.kernel.org, wsa@kernel.org, wsa+renesas@sang-engineering.com, arnd@arndb.de, jasowang@redhat.com, andriy.shevchenko@linux.intel.com, yu1.wang@intel.com, shuo.a.liu@intel.com, conghui.chen@intel.com, stefanha@redhat.com, gregkh@linuxfoundation.org Subject: Re: [PATCH v14] i2c: virtio: add a virtio i2c frontend driver Message-ID: <20210714021042.56hnr73wzrie3jzj@vireshk-i7> References: <984ebecaf697058eb73389ed14ead9dd6d38fb53.1625796246.git.jie.deng@intel.com> <20210713113607-mutt-send-email-mst@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210713113607-mutt-send-email-mst@kernel.org> User-Agent: NeoMutt/20180716-391-311a52 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 13-07-21, 11:38, 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 will be great, exactly what we wanted but didn't ask for :) -- viresh