Russell King <[EMAIL PROTECTED]> wrote: > Since we map the whole lot in one go, if you get one page, there's no > reason why you shouldn't get the lot. This is why I'm wondering if > it has something to do with your other modifications.
my colleage has found the bug: in the function dma_mmap in arch/arm/mm/consistent.c the call to remap_pfn_range uses user_size in PAGE_SIZE units, but looks like it is expected in bytes. When using (user_size << PAGE_SHIFT), it works. I don't know, where to fix it: Should the lower level calls get the size in bytes (most function arguments in Linux kernel sources are not commented), this means fixing the dma_mmap, or should PAGE_SIZE be used, then the lower level functions needs to be fixed. -- Frank Buß, [EMAIL PROTECTED] http://www.frank-buss.de, http://www.it4-systems.de - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
