Do Qualcomm drivers use DMA buffers for request_firmware_into_buf()?

Luis R. Rodriguez mcgrof at kernel.org
Wed Jun 27 23:50:16 UTC 2018


On Thu, Jun 28, 2018 at 01:42:52AM +0200, Ard Biesheuvel wrote:
> But what point is there to letting LSMs decide that they do not trust
> an I/O device if there is nothing we can do about it? How can we
> prevent such an I/O device from modifying our memory?

Simply LSMs can opt to not trust such setup. Its their choice.
The solution to addressing the concern is orthogonal to their
choice.

  Luis


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