DMA failure to pages w/ addr under 64meg

Date: Sat Dec 08 2001 - 21:33:57 EST

 What could cause a DMA transfer to a page with physical address below
64mb to fail ?

 Context: I am using rvmalloc code from bt848 driver in video capture
module (km, The device that does the
transfer is AGP videocard (Radeon), transfer from device to main memory.

All transfers to pages with physical addresses below fail consistently.

                  thanks !

                     Vladimir Dergachev

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This archive was generated by hypermail 2b29 : Sat Dec 15 2001 - 21:00:14 EST