From: Yuanhan Liu <yuanhan.liu@linux.intel.com>
To: Maxime Coquelin <maxime.coquelin@redhat.com>
Cc: dev@dpdk.org
Subject: Re: [PATCH] vhost: Introduce vhost-user's REPLY_ACK feature
Date: Tue, 13 Dec 2016 17:56:02 +0800 [thread overview]
Message-ID: <20161213095602.GC18991@yliu-dev.sh.intel.com> (raw)
In-Reply-To: <20161212175400.7978-1-maxime.coquelin@redhat.com>
On Mon, Dec 12, 2016 at 06:54:00PM +0100, Maxime Coquelin wrote:
> REPLY_ACK features provide a generic way for QEMU to ensure both
> completion and success of a request.
>
> As described in vhost-user spec in QEMU repository, QEMU sets
> VHOST_USER_NEED_REPLY flag (bit 3) when expecting a reply_ack from
> the backend. Backend must reply with 0 for success or non-zero
> otherwise when flag is set.
>
> Currently, only VHOST_USER_SET_MEM_TABLE request implements reply_ack,
> in order to synchronize mapping updates.
>
> This patch enables REPLY_ACK feature generally, but only checks error
> code for VHOST_USER_SET_MEM_TABLE.
>
> Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
Thanks for the patch: it looks good and straightforward to me.
> ---
> Hi,
>
> The intend of this patch is not to fix a known issue, but it is
> nice to have this feature, and it will be used by upcoming MTU
> feature if it remains in its current form.
Just asking, when do you plan to send out the patches?
--yliu
next prev parent reply other threads:[~2016-12-13 9:54 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-12-12 17:54 [PATCH] vhost: Introduce vhost-user's REPLY_ACK feature Maxime Coquelin
2016-12-13 9:56 ` Yuanhan Liu [this message]
2016-12-13 9:57 ` Maxime Coquelin
2016-12-13 10:03 ` Yuanhan Liu
2016-12-13 10:14 ` Maxime Coquelin
2017-01-12 4:03 ` Yuanhan Liu
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