From: Maxime Coquelin <maxime.coquelin@redhat.com>
To: Thomas Monjalon <thomas@monjalon.net>,
Eelco Chaudron <echaudro@redhat.com>,
chenbo.xia@intel.com, david.marchand@redhat.com
Cc: dev@dpdk.org
Subject: Re: [PATCH v3 4/4] vhost: add device op to offload the interrupt kick
Date: Tue, 30 May 2023 17:16:41 +0200 [thread overview]
Message-ID: <7f1be920-0318-ae7f-4c2e-cc08b2083f7c@redhat.com> (raw)
In-Reply-To: <16690234.Ash8RoxBsO@thomas>
On 5/30/23 15:16, Thomas Monjalon wrote:
> 30/05/2023 15:02, Maxime Coquelin:
>>
>> On 5/17/23 11:09, Eelco Chaudron wrote:
>>> This patch adds an operation callback which gets called every time the
>>> library wants to call eventfd_write(). This eventfd_write() call could
>>> result in a system call, which could potentially block the PMD thread.
>>>
>>> The callback function can decide whether it's ok to handle the
>>> eventfd_write() now or have the newly introduced function,
>>> rte_vhost_notify_guest(), called at a later time.
>>>
>>> This can be used by 3rd party applications, like OVS, to avoid system
>>> calls being called as part of the PMD threads.
>>>
>>> Signed-off-by: Eelco Chaudron <echaudro@redhat.com>
>>> ---
>>> lib/vhost/meson.build | 2 ++
>>> lib/vhost/rte_vhost.h | 23 +++++++++++++++++-
>>> lib/vhost/socket.c | 63 ++++++++++++++++++++++++++++++++++++++++++++++---
>>> lib/vhost/version.map | 9 +++++++
>>> lib/vhost/vhost.c | 38 ++++++++++++++++++++++++++++++
>>> lib/vhost/vhost.h | 58 ++++++++++++++++++++++++++++++++-------------
>>> 6 files changed, 171 insertions(+), 22 deletions(-)
>>>
>>
>>
>> The patch looks good to me, but that's the first time we use function
>> versioning in Vhost library, so I'd like another pair of eyes to be sure
>> I don't miss anything.
>>
>> Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
>>
>> Thomas, do we need to mention it somewhere in the release note?
>
> If compatibility is kept, I think we don't need to mention it.
>
>
Thanks Thomas for the information.
Maxime
next prev parent reply other threads:[~2023-05-30 15:16 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-17 9:08 [PATCH v3 0/4] " Eelco Chaudron
2023-05-17 9:08 ` [PATCH v3 1/4] vhost: change vhost_virtqueue access lock to a read/write one Eelco Chaudron
2023-05-17 17:33 ` Maxime Coquelin
2023-05-18 14:46 ` Eelco Chaudron
2023-05-31 6:37 ` Xia, Chenbo
2023-05-31 9:27 ` Maxime Coquelin
2023-05-31 11:13 ` Eelco Chaudron
2023-06-01 1:45 ` Xia, Chenbo
2023-05-17 9:08 ` [PATCH v3 2/4] vhost: make the guest_notifications statistic counter atomic Eelco Chaudron
2023-05-30 12:52 ` Maxime Coquelin
2023-05-31 7:03 ` Xia, Chenbo
2023-05-17 9:09 ` [PATCH v3 3/4] vhost: fix invalid call FD handling Eelco Chaudron
2023-05-30 12:54 ` Maxime Coquelin
2023-05-31 6:12 ` Xia, Chenbo
2023-05-31 9:30 ` Maxime Coquelin
2023-05-17 9:09 ` [PATCH v3 4/4] vhost: add device op to offload the interrupt kick Eelco Chaudron
2023-05-30 13:02 ` Maxime Coquelin
2023-05-30 13:16 ` Thomas Monjalon
2023-05-30 15:16 ` Maxime Coquelin [this message]
2023-05-31 6:19 ` Xia, Chenbo
2023-05-31 9:29 ` Maxime Coquelin
2023-05-31 11:21 ` Eelco Chaudron
2023-06-01 2:18 ` Xia, Chenbo
2023-06-01 8:15 ` Eelco Chaudron
2023-06-01 8:29 ` Maxime Coquelin
2023-06-01 8:49 ` Eelco Chaudron
2023-06-01 8:53 ` Maxime Coquelin
2023-05-31 11:49 ` David Marchand
2023-05-31 12:01 ` David Marchand
2023-05-31 12:48 ` Maxime Coquelin
2023-05-31 13:13 ` Eelco Chaudron
2023-05-31 14:12 ` David Marchand
2023-05-31 14:18 ` Maxime Coquelin
2023-06-01 20:00 ` [PATCH v3 0/4] " Maxime Coquelin
2023-06-02 6:20 ` Eelco Chaudron
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