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

question regarding crypto driver DMA issue

2020-07-08 Thread Van Leeuwen, Pascal
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 with not being able to DMA to said buffer, as they can workaround the issu