On Friday 04 April 2008, Andrew Morton wrote: > I'm assuming from the trace that the arm code tried to put that memory > under DMA (or at least, passed it into part of the DMA management code to > get the various caches sorted out) and that the arm DMA support code > doesn't like being given vmalloced memory.
Actually, Documentation/DMA-Mapping.txt has a section right up front called "What memory is DMA'able?" ... which despite its ungrammatical title, says clearly: ... This means specifically that you may _not_ use the memory/addresses returned from vmalloc() for DMA. ... So I'm rather surprised to see *ANY* kernel code trying to do that. That rule has been in effect for many, many years now. - Dave ------------------------------------------------------------------------- This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Register now and save $200. Hurry, offer ends at 11:59 p.m., Monday, April 7! Use priority code J8TLD2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone _______________________________________________ spi-devel-general mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/spi-devel-general
