Messages in this thread | | | From | "Luck, Tony" <> | Subject | RE: [PATCH] mm/hugetlb: reduce arch dependent code about huge_pmd_unshare | Date | Thu, 23 Apr 2015 22:26:18 +0000 |
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> 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
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