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From: Bruce Richardson <bruce.richardson@intel.com>
To: Zoltan Kiss <zoltan.kiss@linaro.org>
Cc: dev@dpdk.org
Subject: Re: [dpdk-dev] ixgbe vPMD question
Date: Fri, 18 Sep 2015 17:20:51 +0100	[thread overview]
Message-ID: <20150918162051.GA17216@bricha3-MOBL3> (raw)
In-Reply-To: <55FB226F.2040707@linaro.org>

On Thu, Sep 17, 2015 at 09:28:31PM +0100, Zoltan Kiss wrote:
> Hi,
> 
> The recv function does a prefetch on cacheline1, however it seems to me that
> rx_pkts[pos] should be uninitialized pointer at that time:
> 
> http://dpdk.org/browse/dpdk/tree/drivers/net/ixgbe/ixgbe_rxtx_vec.c#n287
> 
> So I guess it prefetches only random value. Or am I missing something?
> 
> Regards,
> 
> Zoltan

>From a look at the code, you may indeed by right here. We'll see about fixing
that up in a future patch.

/Bruce

      reply	other threads:[~2015-09-18 16:21 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-09-17 20:28 Zoltan Kiss
2015-09-18 16:20 ` Bruce Richardson [this message]

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