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From: Jie Deng <jie.deng@intel.com>
To: Viresh Kumar <viresh.kumar@linaro.org>
Cc: linux-i2c@vger.kernel.org,
	virtualization@lists.linux-foundation.org,
	linux-kernel@vger.kernel.org, mst@redhat.com, wsa@kernel.org,
	jasowang@redhat.com, wsa+renesas@sang-engineering.com,
	andriy.shevchenko@linux.intel.com, conghui.chen@intel.com,
	arnd@arndb.de, kblaiech@mellanox.com,
	jarkko.nikula@linux.intel.com, Sergey.Semin@baikalelectronics.ru,
	rppt@kernel.org, loic.poulain@linaro.org, tali.perry1@gmail.com,
	u.kleine-koenig@pengutronix.de, bjorn.andersson@linaro.org,
	yu1.wang@intel.com, shuo.a.liu@intel.com, stefanha@redhat.com,
	pbonzini@redhat.com
Subject: Re: [PATCH v10] i2c: virtio: add a virtio i2c frontend driver
Date: Wed, 24 Mar 2021 14:41:52 +0800	[thread overview]
Message-ID: <84f0bf1b-9b69-6fc0-011c-2aafde208435@intel.com> (raw)
In-Reply-To: <20210324060907.nwilmghg2xcdz7nv@vireshk-i7>


On 2021/3/24 14:09, Viresh Kumar wrote:
> On 24-03-21, 14:05, Jie Deng wrote:
> Or, now that I think about it a bit more, another thing we can do here is see if
> virtqueue_get_buf() returns NULL, if it does then we should keep expecting more
> messages as it may be early interrupt. What do you say ?

I don't think we really need this because for this device, early 
interrupt is a bad operation
which should be avoided. I can't think of why this device need to send 
early interrupt, what
we can do is to clarify that this means loss of the remaining requests. 
A device should never
do this, if it does then loss is the expected result.



WARNING: multiple messages have this Message-ID (diff)
From: Jie Deng <jie.deng@intel.com>
To: Viresh Kumar <viresh.kumar@linaro.org>
Cc: mst@redhat.com, bjorn.andersson@linaro.org,
	wsa+renesas@sang-engineering.com, linux-i2c@vger.kernel.org,
	wsa@kernel.org, andriy.shevchenko@linux.intel.com,
	yu1.wang@intel.com, u.kleine-koenig@pengutronix.de,
	kblaiech@mellanox.com, virtualization@lists.linux-foundation.org,
	arnd@arndb.de, stefanha@redhat.com, tali.perry1@gmail.com,
	conghui.chen@intel.com, loic.poulain@linaro.org,
	linux-kernel@vger.kernel.org, Sergey.Semin@baikalelectronics.ru,
	jarkko.nikula@linux.intel.com, shuo.a.liu@intel.com,
	pbonzini@redhat.com, rppt@kernel.org
Subject: Re: [PATCH v10] i2c: virtio: add a virtio i2c frontend driver
Date: Wed, 24 Mar 2021 14:41:52 +0800	[thread overview]
Message-ID: <84f0bf1b-9b69-6fc0-011c-2aafde208435@intel.com> (raw)
In-Reply-To: <20210324060907.nwilmghg2xcdz7nv@vireshk-i7>


On 2021/3/24 14:09, Viresh Kumar wrote:
> On 24-03-21, 14:05, Jie Deng wrote:
> Or, now that I think about it a bit more, another thing we can do here is see if
> virtqueue_get_buf() returns NULL, if it does then we should keep expecting more
> messages as it may be early interrupt. What do you say ?

I don't think we really need this because for this device, early 
interrupt is a bad operation
which should be avoided. I can't think of why this device need to send 
early interrupt, what
we can do is to clarify that this means loss of the remaining requests. 
A device should never
do this, if it does then loss is the expected result.


_______________________________________________
Virtualization mailing list
Virtualization@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/virtualization

  reply	other threads:[~2021-03-24  6:42 UTC|newest]

Thread overview: 114+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-23 14:19 [PATCH v10] i2c: virtio: add a virtio i2c frontend driver Jie Deng
2021-03-23 14:19 ` Jie Deng
2021-03-23  7:27 ` Viresh Kumar
2021-03-23  8:33   ` Jie Deng
2021-03-23  8:33     ` Jie Deng
2021-03-23  8:37     ` Viresh Kumar
2021-03-23  9:27     ` Arnd Bergmann
2021-03-23  9:27       ` Arnd Bergmann
2021-03-24  1:17       ` Jie Deng
2021-03-24  1:17         ` Jie Deng
2021-03-24  4:00         ` Viresh Kumar
2021-04-15  6:45       ` Viresh Kumar
2021-04-15  6:56         ` Jie Deng
2021-04-15  6:56           ` Jie Deng
2021-04-15  7:15           ` Viresh Kumar
2021-04-15  7:21           ` Wolfram Sang
2021-04-15  7:24             ` Viresh Kumar
2021-04-15  7:28               ` Wolfram Sang
2021-04-15  7:37                 ` Viresh Kumar
2021-04-15  8:15                 ` Jie Deng
2021-04-15  8:15                   ` Jie Deng
2021-04-15  8:18                   ` Wolfram Sang
2021-04-15  8:20                     ` Jie Deng
2021-04-15  8:20                       ` Jie Deng
2021-05-27  6:49                     ` Jie Deng
2021-05-27  6:49                       ` Jie Deng
2021-05-12  1:37             ` Jie Deng
2021-05-12  1:37               ` Jie Deng
2021-03-23  9:01 ` Viresh Kumar
2021-03-23  9:38   ` Viresh Kumar
2021-03-24  0:53     ` Jie Deng
2021-03-24  0:53       ` Jie Deng
2021-03-24  3:52       ` Viresh Kumar
2021-03-24  4:00         ` Jie Deng
2021-03-24  4:00           ` Jie Deng
2021-03-24  4:02           ` Viresh Kumar
2021-03-24  4:20 ` Viresh Kumar
2021-03-24  6:05   ` Jie Deng
2021-03-24  6:05     ` Jie Deng
2021-03-24  6:09     ` Viresh Kumar
2021-03-24  6:41       ` Jie Deng [this message]
2021-03-24  6:41         ` Jie Deng
2021-03-24  6:44         ` Viresh Kumar
2021-04-14  2:07 ` Jie Deng
2021-04-14  2:07   ` Jie Deng
2021-04-14  3:52   ` Viresh Kumar
2021-04-15  6:25     ` Jie Deng
2021-04-15  6:25       ` Jie Deng
2021-04-15  3:51 ` Jason Wang
2021-04-15  3:51   ` Jason Wang
2021-04-15  6:17   ` Jie Deng
2021-04-15  6:17     ` Jie Deng
2021-06-28  8:39 ` Wolfram Sang
2021-06-28  9:01   ` Arnd Bergmann
2021-06-28  9:01     ` Arnd Bergmann
2021-06-28  9:25     ` Wolfram Sang
2021-06-28  9:51       ` Arnd Bergmann
2021-06-28  9:51         ` Arnd Bergmann
2021-06-28 10:13         ` Wolfram Sang
2021-06-28 11:50           ` Arnd Bergmann
2021-06-28 11:50             ` Arnd Bergmann
2021-06-28 14:58             ` Wolfram Sang
2021-06-29  3:04               ` Jie Deng
2021-06-29  3:04                 ` Jie Deng
2021-06-29  8:30                 ` Wolfram Sang
2021-06-29  9:13                   ` Viresh Kumar
2021-06-29  9:13                     ` Viresh Kumar
2021-06-29  9:36                     ` Wolfram Sang
2021-06-29  4:10               ` Viresh Kumar
2021-06-29  4:10                 ` Viresh Kumar
2021-06-29  8:27                 ` Wolfram Sang
2021-06-29  8:52                   ` Viresh Kumar
2021-06-29  8:52                     ` Viresh Kumar
2021-06-29  9:07                     ` Wolfram Sang
2021-06-30 14:38                 ` Wolfram Sang
2021-06-30 15:09                   ` Viresh Kumar
2021-06-30 15:09                     ` Viresh Kumar
2021-06-29  3:03     ` Jie Deng
2021-06-29  3:03       ` Jie Deng
2021-06-29 10:07 ` Wolfram Sang
2021-06-29 10:16   ` Viresh Kumar
2021-06-29 10:16     ` Viresh Kumar
2021-06-29 10:23     ` Wolfram Sang
2021-06-29 10:30       ` Viresh Kumar
2021-06-29 10:30         ` Viresh Kumar
2021-06-29 10:42         ` Wolfram Sang
2021-06-29 10:43           ` Wolfram Sang
2021-06-29 10:56             ` Viresh Kumar
2021-06-29 10:56               ` Viresh Kumar
2021-06-29 11:11               ` Wolfram Sang
2021-06-29 11:16                 ` Viresh Kumar
2021-06-29 11:16                   ` Viresh Kumar
2021-06-29 11:48                   ` Wolfram Sang
2021-07-05 12:18             ` Viresh Kumar
2021-07-05 12:18               ` Viresh Kumar
2021-07-06  1:50               ` Jie Deng
2021-07-06  1:50                 ` Jie Deng
2021-07-22 15:15               ` Wolfram Sang
2021-07-23  2:28                 ` Viresh Kumar
2021-07-23  2:28                   ` Viresh Kumar
2021-07-23  5:28                   ` Viresh Kumar
2021-07-23  5:28                     ` Viresh Kumar
2021-06-30  6:45   ` Jie Deng
2021-06-30  6:45     ` Jie Deng
2021-06-30  7:32     ` Wolfram Sang
2021-06-30  7:51       ` Jie Deng
2021-06-30  7:51         ` Jie Deng
2021-06-30  7:55         ` Arnd Bergmann
2021-06-30  7:55           ` Arnd Bergmann
2021-06-30  8:04           ` Wolfram Sang
2021-06-30  8:07           ` Andy Shevchenko
2021-06-30  8:07             ` Andy Shevchenko
2021-06-30  8:29             ` Arnd Bergmann
2021-06-30  8:29               ` Arnd Bergmann

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