> Memory fails me. Why do some architectures (arm, arm64, x86_64) want > huge_pmd_[un]share() while other architectures (ia64, tile, mips, > powerpc, metag, sh, s390) do not? Potentially laziness/ignorance-of-feature? It looks like this feature started on x86_64 and then spread to arm*. Huge pages are weird on ia64 in that they have to be in a specific range of virtual addresses (region 4). But I don't see why that would prevent sharing pmd's. -Tony -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href