On 01/07/2014 10:14 AM, Daniel Vetter wrote:
> On Fri, Jan 03, 2014 at 11:22:17AM +0100, Thomas Hellstrom wrote:
>> This is illegal for at least two reasons:
>>
>> 1) While it may work on some platforms / iommus, obtaining page pointers from
>> mapped sg-lists is illegal, since the DMA API allows p
On Fri, Jan 03, 2014 at 11:22:17AM +0100, Thomas Hellstrom wrote:
> This is illegal for at least two reasons:
>
> 1) While it may work on some platforms / iommus, obtaining page pointers from
> mapped sg-lists is illegal, since the DMA API allows page pointer information
> to be destroyed in the s
This is illegal for at least two reasons:
1) While it may work on some platforms / iommus, obtaining page pointers from
mapped sg-lists is illegal, since the DMA API allows page pointer information
to be destroyed in the sg mapping process.
2) TTM has no way of determining the linear kernel map c
