Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
Date:   Wed, 4 Aug 2021 09:19:26 +0530
From:   Viresh Kumar <viresh.kumar@linaro.org>
To:     Rob Herring <robh@kernel.org>
Cc:     Jason Wang <jasowang@redhat.com>,
        "Michael S. Tsirkin" <mst@redhat.com>,
        Arnd Bergmann <arnd@kernel.org>,
        Jean-Philippe Brucker <jean-philippe@linaro.org>,
        Linus Walleij <linus.walleij@linaro.org>,
        Bartosz Golaszewski <bgolaszewski@baylibre.com>,
        Vincent Guittot <vincent.guittot@linaro.org>,
        Bill Mills <bill.mills@linaro.org>,
        Alex =?utf-8?Q?Benn=C3=A9e?= <alex.bennee@linaro.org>,
        "Enrico Weigelt, metux IT consult" <info@metux.net>,
        Jie Deng <jie.deng@intel.com>, devicetree@vger.kernel.org,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        "open list:DRM DRIVER FOR QEMU'S CIRRUS DEVICE" 
        <virtualization@lists.linux-foundation.org>,
        Arnd Bergmann <arnd@arndb.de>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@vger.kernel.org>
Subject: Re: [PATCH V4 3/5] dt-bindings: gpio: Add bindings for gpio-virtio
Message-ID: <20210804034926.qtagdoopeaeaskaw@vireshk-i7>
References: <cover.1627362340.git.viresh.kumar@linaro.org>
 <acf7402ef4aabc0ad6295c32846f2bef1cd9b56a.1627362340.git.viresh.kumar@linaro.org>
 <YQhKKyPmOUE8z+US@robh.at.kernel.org>
 <20210803043014.paskwghdio6azplp@vireshk-i7>
 <CAL_JsqJ6_ktTQKiy_xx9DhjQ3=imfvSZpBem5fXwVY7O49EgCw@mail.gmail.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <CAL_JsqJ6_ktTQKiy_xx9DhjQ3=imfvSZpBem5fXwVY7O49EgCw@mail.gmail.com>
User-Agent: NeoMutt/20180716-391-311a52
Precedence: bulk

On 03-08-21, 09:47, Rob Herring wrote:
> n Mon, Aug 2, 2021 at 10:30 PM Viresh Kumar <viresh.kumar@linaro.org> wrote:
> >
> > On 02-08-21, 13:40, Rob Herring wrote:
> > > Humm, how does one implement interrupts without a parent interrupt? It
> > > uses the parent virtio,mmio interrupt?
> >
> > Kind of, yeah, but not necessarily.
> >
> > The interrupt information is passed over buffers shared between host and guest.
> > Now the guest may process the buffers when it receives a notification from the
> > host, that will be at downpath of an interrupt for virtio,mmio. Or the guest may
> > poll on the virtqueue and process any buffers as soon as they are made
> > available, no interrupts then.
> 
> Okay, thanks for the explanation.
> 
> Reviewed-by: Rob Herring <robh@kernel.org>

Thanks for reviewing this Rob.

-- 
viresh