Re: question regarding crypto driver DMA issue

2020-07-08 Thread Ard Biesheuvel
On Wed, 8 Jul 2020 at 16:35, Van Leeuwen, Pascal wrote: > > Hi Ard, > > Thanks for responding! > > > > For the situation where this problem is occuring, the actual buffers are > > > stored inside > > > the ahash_req structure. So my question is: is there any reason why this > > > structure may >

RE: question regarding crypto driver DMA issue

2020-07-08 Thread Van Leeuwen, Pascal
Hi Ard, Thanks for responding! > > For the situation where this problem is occuring, the actual buffers are > > stored inside > > the ahash_req structure. So my question is: is there any reason why this > > structure may > > not be DMA-able on some systems? (as I have a hunch that may be the pr

Re: question regarding crypto driver DMA issue

2020-07-08 Thread Ard Biesheuvel
On Wed, 8 Jul 2020 at 11:56, Van Leeuwen, Pascal wrote: > > Hi, > > I have a question on behalf of a customer of ours trying to use the > inside-secure crypto > API driver. They are experiencing issues with result data not arriving in the > result buffer. > This seems to have something to do wit