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Posted to commits@nuttx.apache.org by GitBox <gi...@apache.org> on 2021/11/28 15:38:44 UTC

[GitHub] [incubator-nuttx] patacongo commented on pull request #4900: Add Board IOCTL for DMA buffer allocation

patacongo commented on pull request #4900:
URL: https://github.com/apache/incubator-nuttx/pull/4900#issuecomment-981105744


   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?


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