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From: Eric Dumazet <eric.dumazet@gmail.com>
To: Iyappan Subramanian <isubramanian@apm.com>
Cc: David Miller <davem@davemloft.net>,
	netdev <netdev@vger.kernel.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"linux-arm-kernel@lists.infradead.org"
	<linux-arm-kernel@lists.infradead.org>,
	mlangsdo@redhat.com, patches <patches@apm.com>,
	Keyur Chudgar <kchudgar@apm.com>
Subject: Re: [PATCH] drivers: net: xgene: fix: Out of order descriptor bytes read
Date: Mon, 26 Jan 2015 13:32:42 -0800	[thread overview]
Message-ID: <1422307962.29618.31.camel@edumazet-glaptop2.roam.corp.google.com> (raw)
In-Reply-To: <1422307652.29618.30.camel@edumazet-glaptop2.roam.corp.google.com>

On Mon, 2015-01-26 at 13:27 -0800, Eric Dumazet wrote:

> What happens if you compile a kernel with CONFIG_SMP=n ?
> 
> 
> Most drivers in drivers/net use rmb() in this case, not smp_rmb() or
> barrier()

Note that dma_rmb() was recently added as well.

  reply	other threads:[~2015-01-26 21:32 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-01-22 20:03 [PATCH] drivers: net: xgene: fix: Out of order descriptor bytes read Iyappan Subramanian
2015-01-22 22:50 ` Eric Dumazet
2015-01-26 21:12   ` Iyappan Subramanian
2015-01-26 21:27     ` Eric Dumazet
2015-01-26 21:32       ` Eric Dumazet [this message]
2015-01-26 22:34     ` David Miller

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