linux-kernel - Re: [PATCH] x86: Fix gfp flags for coherent DMA memory allocation

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Date:	Thu, 17 Sep 2015 02:04:42 +0200
From:	Christoph Hellwig <hch@....de>
To:	Junichi Nomura <j-nomura@...jp.nec.com>
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"x86@...nel.org" <x86@...nel.org>,
	"tglx@...utronix.de" <tglx@...utronix.de>,
	"mingo@...hat.com" <mingo@...hat.com>,
	Christoph Hellwig <hch@....de>, "hpa@...or.com" <hpa@...or.com>
Subject: Re: [PATCH] x86: Fix gfp flags for coherent DMA memory allocation

On Mon, Sep 14, 2015 at 07:38:36AM +0000, Junichi Nomura wrote:
> Commit 6894258eda2f reversed the order of gfp_flags adjustment in
> dma_alloc_attrs() for x86 [arch/x86/kernel/pci-dma.c]
> As a result, relevant flags set by dma_alloc_coherent_gfp_flags()
> is just discarded and causes coherent DMA memory allocation failure
> on some devices.

Oops, sorry.  Thanks for fixing this:

Acked-by: Christoph Hellwig <hch@....de>
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