From: Andrew Morton <akpm@linux-foundation.org>
To: Huacai Chen <chenhc@lemote.com>
Cc: Fuxin Zhang <zhangfx@lemote.com>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
stable@vger.kernel.org
Subject: Re: [PATCH V3 2/3] mm: dmapool: Align to ARCH_DMA_MINALIGN in non-coherent DMA mode
Date: Wed, 13 Sep 2017 14:52:49 -0700 [thread overview]
Message-ID: <20170913145249.f89678a57842da122aa062fd@linux-foundation.org> (raw)
In-Reply-To: <1505294451-21312-1-git-send-email-chenhc@lemote.com>
On Wed, 13 Sep 2017 17:20:51 +0800 Huacai Chen <chenhc@lemote.com> wrote:
> In non-coherent DMA mode, kernel uses cache flushing operations to
> maintain I/O coherency, so the dmapool objects should be aligned to
> ARCH_DMA_MINALIGN.
What are the user-visible effects of this bug?
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next prev parent reply other threads:[~2017-09-13 21:52 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-13 9:20 Huacai Chen
2017-09-13 21:52 ` Andrew Morton [this message]
2017-09-14 1:13 ` [PATCH V3 2/3] mm: dmapool: Align to ARCH_DMA_MINALIGN innon-coherent " 陈华才
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