Messages in this thread | | | Date | Tue, 30 Mar 1999 04:28:17 -0800 | From | David Miller <> | Subject | Re: Address spaces on a i386 - Getting Confused |
| |
Date: Tue, 30 Mar 1999 22:26:34 +1000 From: Richard Gooch <rgooch@atnf.csiro.au>
He should be able to allocate kernel pages and mmap() them to user space. Then he can DMA into the pages and wake up the user process when it's done.
This would work, but only if it is mlock'd (could be done by the kernel, just set the appropriate vm_flags during the mmap) else the swapper can toss it to disk at any time.
Later, David S. Miller davem@redhat.com
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu Please read the FAQ at http://www.tux.org/lkml/
| |