Messages in this thread | | | Date | Fri, 27 May 2005 14:54:53 -0500 | From | Timur Tabi <> | Subject | Re: Will __pa(vmalloc()) ever work? |
| |
Christoph Hellwig wrote:
> It will return the correct physical address for the start of the buffer. > But given that vmalloc is a non-contingous allocator that's pretty useless.
So as long as the vmalloc'd memory fits inside one page, __pa() will always give the correct address? If so, then can't I just call __pa() for every page in the buffer and get a list of physical addresses? If I can do that, then how the memory be virtually contiguous but not physicall contiguous?
> As are physical addresses for anything but low-level architecture code.
I don't understand what that means.
-- Timur Tabi Staff Software Engineer timur.tabi@ammasso.com
One thing a Southern boy will never say is, "I don't think duct tape will fix it." -- Ed Smylie, NASA engineer for Apollo 13 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |