From mboxrd@z Thu Jan  1 00:00:00 1970
From: Bruce Richardson <bruce.richardson@intel.com>
Subject: Re: [PATCH 2/2] net/ixgbe: calculate correct number of
 received packets for ARM NEON-version vPMD
Date: Wed, 21 Dec 2016 11:03:32 +0000
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Cc: Jianbo Liu <jianbo.liu@linaro.org>, dev@dpdk.org, helin.zhang@intel.com,
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To: Jerin Jacob <jerin.jacob@caviumnetworks.com>
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On Wed, Dec 21, 2016 at 03:38:51PM +0530, Jerin Jacob wrote:
> On Mon, Dec 19, 2016 at 11:39:18AM +0530, Jianbo Liu wrote:
> 
> Hi Jianbo,
> 
> > vPMD will check 4 descriptors in one time, but the statuses are not consistent
> > because the memory allocated for RX descriptors is cacheable huagepage.
> Is it different in X86 case ?i.e Is x86 creating non cacheable hugepages?

This is not a problem on IA, because the instruction ordering rules on
IA guarantee that the reads will be done in the correct program order,
and we never get stale cache data.

/Bruce