Hi! > I'm having some trouble with the DMA allocation using Linux 2.6.14-rc2 + > some platform modifications. Namely, the dma_alloc_coherent() function > returns bogus virtual addresses causing machine check exceptions. At > boot, the kernel complains there is something wrong, but I cannot figure > out how to fix it. CONFIG_CONSISTENT_START is at its default value, > 0xff100000. Any hints where to look further? > > Oh, this is a custom 8xx board. Has the support for DMA in 8xx been > unstable at the time of pre-2.6.14? probably your IMAP_ADDR is at 0xff000000, isn't it? if it is, please adjust CONFIG_CONSISTENT_START to an address like 0xe0000000.
-- Aristeu
