hartmannathan commented on pull request #4900: URL: https://github.com/apache/incubator-nuttx/pull/4900#issuecomment-981127474
> This seems like a very strange user-space OS access. I don't think Linux would permit this. > > DMA memory is normally well protected for security reasons. Would this work in KERNEL and PROTECTED modes where DMA memory is allocated from a supervisor mode memory pool? Yes come to think of it, my earlier thought to expose it to applications via an ioctl is not necessary, but I think the other parts of my comment are valid. (I was thinking of situations needing highly-optimized, zero-copy transfers.) -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
