Messages in this thread | | | Date | Tue, 1 May 2007 09:47:02 -0700 | From | Bill Irwin <> | Subject | Re: [3/3] use vmalloc() to arrange guard pages for stacks |
| |
Bill Irwin wrote: >> It's a shame that the resource scalability implications of vmallocspace >> allocations prevent this from being useful in production. One could, in >> principle, establish guard pages within ZONE_NORMAL, but for 4KB stacks >> it's somewhat awkward to dredge up 3 contigous pages, and 4 defeats the >> purpose. Alignment with 8KB stacks wants 2 contiguous order 1 pages that >> span an order 2 page boundary. I guess I could rewrite the page allocator >> (again), but people seem to feel safest with the buddy allocator affairs. >> BTW, did the original patches for this prove to be of any use to you?
On Tue, May 01, 2007 at 12:40:55PM -0400, Chuck Ebbert wrote: > No, I never tried them. Seems like I never get to anything these days but > answering bug reports and merging fixes... Putting the feature in-kernel > means I might get to use it though. :)
Maybe it's a bit late for whatever bug you were hunting, but at least it'll help smoke out whatever other stack overflows you or anyone else might end up chasing down.
-- wli - 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/
| |