4 ms·

man dma

• masomenos 17y ago
  $ man dma No manual entry for dma
  • wendroid 17y ago
    get a better manual
  • wendroid 17y ago
    http://en.wikipedia.org/wiki/Direct_memory_access http://en.wikipedia.org/wiki/Direct_memory_access And the description of how to exploit it http://www.schneier.com/blog/archives/2006/06/hacking_compute.html http://www.schneier.com/blog/archives/2006/06/hacking_comput... The FireWire version http://www.storm.net.nz/static/files/ab_firewire_rux2k6-final.pdf http://www.storm.net.nz/static/files/ab_firewire_rux2k6-fina...
• jey 17y ago
  Er, DMA isn't controlled by the TLB using the usual page table for access permissions? If not, PCs are ridiculously broken.
  • wendroid 17y ago
    You can read write system memory at addresses that fit in 32bits even when the Kernel has crashed.