help: dma_map_single() returning null in dom0

help: dma_map_single() returning null in dom0

[Gary M]

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Hi,

I'm in a gap in my understanding need some help..

I'm porting a driver from bare metal to Dom0, xen 4.3, debian jessie kernel
3.14

I do a kmalloc and get a null returned dma_map_single().
Is there something I'm not setting correctly in dom0 kernel line ?
Does the dma_map_single() call work in dom0 ?

cheers
-g

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Re: help: dma_map_single() returning null in dom0

[Konrad Rzeszutek Wilk]

On Tue, Aug 12, 2014 at 05:09:22PM -0600, Gary M wrote:
> Hi,
> 
> I'm in a gap in my understanding need some help..
> 
> I'm porting a driver from bare metal to Dom0, xen 4.3, debian jessie kernel
> 3.14
> 
> I do a kmalloc and get a null returned dma_map_single().

Could paste your code please?
> Is there something I'm not setting correctly in dom0 kernel line ?
> Does the dma_map_single() call work in dom0 ?

Yes.
> 
> cheers
> -g

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> Xen-devel mailing list
> Xen-devel@lists.xen.org
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