On Tuesday 09 October 2007 16:40, Huang, Ying wrote: > +unsigned long copy_from_phys(void *to, unsigned long from_phys, > + unsigned long n) > +{ > + struct page *page; > + void *from; > + unsigned long remain = n, offset, trunck; > + > + while (remain) { > + page = pfn_to_page(from_phys >> PAGE_SHIFT); > + from = kmap_atomic(page, KM_USER0); > + offset = from_phys & ~PAGE_MASK; > + if (remain > PAGE_SIZE - offset) > + trunck = PAGE_SIZE - offset; > + else > + trunck = remain; > + memcpy(to, from + offset, trunck); > + kunmap_atomic(from, KM_USER0); > + to += trunck; > + from_phys += trunck; > + remain -= trunck; > + } > + return n; > +}
I suppose that's not unreasonable to put in mm/memory.c, although it's not really considered a problem to do this kind of stuff in a low level arch file... You have no kernel virtual mapping for the source data? Should it be __init? Care to add a line of documentation if you keep it in mm/memory.c? Thanks, Nick - 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/