linux-kernel - Re: [mm PATCH v3 17/23] arch/sparc: Add option to skip DMA sync as a part of map and unmap

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Message-Id: <20161113.122703.2122997256308305867.davem@davemloft.net>
Date:   Sun, 13 Nov 2016 12:27:03 -0500 (EST)
From:   David Miller <davem@...emloft.net>
To:     alexander.h.duyck@...el.com
Cc:     linux-mm@...ck.org, akpm@...ux-foundation.org,
        sparclinux@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [mm PATCH v3 17/23] arch/sparc: Add option to skip DMA sync as
 a part of map and unmap

From: Alexander Duyck <alexander.h.duyck@...el.com>
Date: Thu, 10 Nov 2016 06:35:45 -0500

> 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
> via a sync_for_cpu or sync_for_device call.
> 
> Signed-off-by: Alexander Duyck <alexander.h.duyck@...el.com>

Acked-by: David S. Miller <davem@...emloft.net>