From mboxrd@z Thu Jan  1 00:00:00 1970
From: Yuanhan Liu <yuanhan.liu@linux.intel.com>
Subject: Re: [PATCH 1/2] net/virtio: fix performance regression
 due to TSO enabling
Date: Wed, 11 Jan 2017 16:08:34 +0800
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Cc: dev@dpdk.org, Tan Jianfeng <jianfeng.tan@intel.com>,
 Wang Zhihong <zhihong.wang@intel.com>,
 Olivier Matz <olivier.matz@6wind.com>,
 "Michael S. Tsirkin" <mst@redhat.com>, stable@dpdk.org,
 Thomas Monjalon <thomas.monjalon@6wind.com>
To: Maxime Coquelin <maxime.coquelin@redhat.com>
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On Wed, Jan 11, 2017 at 08:59:28AM +0100, Maxime Coquelin wrote:
> >+/* avoid write operation when necessary, to lessen cache issues */
> >+#define ASSIGN_UNLESS_EQUAL(var, val) do {	\
> >+	if ((var) != (val))			\
> >+		(var) = (val);			\
> >+} while (0)
> As it is intended to go in -stable, I think this is fine to have it
> only in the driver, but for v17.02, maybe we should have another patch on
> top that declares it somewhere so that other libs and drivers can
> make use of it?

Yes, if it has any other usages :)


	--yliu