From mboxrd@z Thu Jan  1 00:00:00 1970
From: Yuanhan Liu <yuanhan.liu@linux.intel.com>
Subject: Re: [PATCH] vhost: Introduce vhost-user's REPLY_ACK
	feature
Date: Thu, 12 Jan 2017 12:03:44 +0800
Message-ID: <20170112040344.GC9770@yliu-dev.sh.intel.com>
References: <20161212175400.7978-1-maxime.coquelin@redhat.com>
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To: Maxime Coquelin <maxime.coquelin@redhat.com>
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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>

Applied to dpdk-next-virtio.

Thanks.

	--yliu