Re: [Xen-devel] [PATCH] xen: Add __GFP_DMA flag when xen_swiotlb_init gets free pages.

[Chen Baozi <cbz@xxxxxxxxxx>]

On Tue, Apr 21, 2015 at 12:11:01PM +0100, Stefano Stabellini wrote:
> Chen,
> could you please try the patch below in your repro scenario?
> I have only build tested it.
> 
> ---
> 
> xen: Add __GFP_DMA flag when xen_swiotlb_init gets free pages on ARM
> 
> From: Chen Baozi <baozich@xxxxxxxxx>
> 
> Make sure that xen_swiotlb_init allocates buffers that are DMA capable
> when at least one memblock is available below 4G. Otherwise we assume
> that all devices on the SoC can cope with >4G addresses.
> 
> No functional changes on x86.
> 
> Signed-off-by: Chen Baozi <baozich@xxxxxxxxx>
> Signed-off-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>

Tested-by: Chen Baozi <baozich@xxxxxxxxx>

Cheers,

Baozi

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