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On Wed, 7 Apr 2004 17:42:39 +1000 David Gibson <david@gibson.dropbear.id.au> wrote: > Currently the kernel does not implement copy-on-write for huge pages - > in fact any sort of page fault on a hugepage results in a SIGBUS. > This means that hugepages *always* have MAP_SHARED semantics, even if > MAP_PRIVATE is requested, and in particular that they are always > shared across a fork(). Particularly when using hugetlbfs as just a > source of quasi-anonymous memory, those are rather strange semantics. [...] Implementing this for ppc64 only is just wrong. Before you do this I would suggest to factor out the common code in the various hugetlbpage implementations and then implement it in common code. -Andi - 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/ | ||||||||||||
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