Messages in this thread | | | Date | Tue, 30 Dec 2003 13:00:29 +1100 | From | Rusty Russell <> | Subject | Re: Page Colouring (was: 2.6.0 Huge pages not working as expected) |
| |
On Mon, 29 Dec 2003 02:23:19 -0800 William Lee Irwin III <wli@holomorphy.com> wrote:
> The fact merely elevating PAGE_SIZE breaks numerous things makes me > rather suspicious of claims that minimalistic patches can do likewise.
Can you give an example?
One approach is to simply present a larger page size to userspace w/ getpagesize(). This does break ELF programs which have been laid out assuming the old page size (presumably they try to mprotect the read-only sections). On PPC, the ELF ABI already insists on a 64k boundary between such sections, and maybe for others you could simply round appropriately and pray, or do fine-grained protections (ie. on real pagesize) for that one case.
Rusty. -- there are those who do and those who hang on and you don't see too many doers quoting their contemporaries. -- Larry McVoy - 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/
| |