linux-kernel - Re: [mm PATCH v3 07/23] arch/hexagon: Add option to skip DMA sync as a part of mapping

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Message-ID: <20161110184014.GA30680@codeaurora.org>
Date:   Thu, 10 Nov 2016 12:40:14 -0600
From:   Richard Kuo <rkuo@...eaurora.org>
To:     Alexander Duyck <alexander.h.duyck@...el.com>
Cc:     linux-mm@...ck.org, akpm@...ux-foundation.org,
        linux-hexagon@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [mm PATCH v3 07/23] arch/hexagon: Add option to skip DMA sync as
 a part of mapping

On Thu, Nov 10, 2016 at 06:34:52AM -0500, Alexander Duyck wrote:
> This change allows us to pass DMA_ATTR_SKIP_CPU_SYNC which allows us to
> avoid invoking cache line invalidation if the driver will just handle it
> later via a sync_for_cpu or sync_for_device call.
> 
> Cc: Richard Kuo <rkuo@...eaurora.org>
> Cc: linux-hexagon@...r.kernel.org
> Signed-off-by: Alexander Duyck <alexander.h.duyck@...el.com>
> ---
>  arch/hexagon/kernel/dma.c |    6 +++++-
>  1 file changed, 5 insertions(+), 1 deletion(-)
> 

For Hexagon:

Acked-by: Richard Kuo <rkuo@...eaurora.org>



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