linux-kernel - Re: [PATCH net 2/2] vmxnet3: use DMA memory barriers where required

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Message-Id: <20180514.224501.737523188651166796.davem@davemloft.net>
Date:   Mon, 14 May 2018 22:45:01 -0400 (EDT)
From:   David Miller <davem@...emloft.net>
To:     hpreg@...are.com
Cc:     netdev@...r.kernel.org, doshir@...are.com, pv-drivers@...are.com,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH net 2/2] vmxnet3: use DMA memory barriers where required

From: <hpreg@...are.com>
Date: Mon, 14 May 2018 08:14:49 -0400

> The gen bits must be read first from (resp. written last to) DMA memory.
> The proper way to enforce this on Linux is to call dma_rmb() (resp.
> dma_wmb()).
> 
> Signed-off-by: Regis Duchesne <hpreg@...are.com>
> Acked-by: Ronak Doshi <doshir@...are.com>

Applied and queued up for -stable.