Messages in this thread | | | Date | Fri, 26 Mar 2004 09:46:56 +0000 | From | Christoph Hellwig <> | Subject | Re: Problem with remap_page_range/mmap |
| |
On Fri, Mar 26, 2004 at 10:36:19AM +0100, Christian Leber wrote: > It also didn´t work with PG_reserved. > What would be the good idea? I need at least 8 at least 4MB (2MB are enough for 2.4) > big physical memory pieces for DMA, mapped to userspace. > > What is the reason why it doesn´t work? There seems to be no special > remap_page_range for ia64.
Put the page structs into an array and return them from ->nopage. The kernel pagefault code will set up the ptes for you.
Now actually getting 4MB of continguous memory is a different issue..
I'm surprised you actually managed to get the allocation to succeed.
- 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/
| |