Messages in this thread | | | Date | Fri, 26 Jan 2007 14:48:44 -0800 | From | "Ken Chen" <> | Subject | Re: [PATCH] Don't allow the stack to grow into hugetlb reserved regions |
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On 1/26/07, Hugh Dickins <hugh@veritas.com> wrote: > Less trivial (and I wonder whether you've come to this from an ia64 > or a powerpc direction): I notice that ia64 has more stringent REGION > checks in its ia64_do_page_fault, before calling expand_stack or > expand_upwards. So on that path, the usual path, I think your > new check in acct_stack_growth is unnecessary on ia64;
I think you are correct. This appears to affect powerpc only. On ia64, hugetlb lives in a completely different region and they can never step into normal stack address space. And for x86, there isn't a thing called "reserved address space" for hugetlb mapping.
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