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  • linux-arm
  • linux-coresight-backports
  • Repository
  • linux-coresight-backports
  • arch
  • sparc
  • mm
  • init_64.c
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  • Nitin Gupta's avatar
    sparc64: Trim page tables for 8M hugepages · 7bc3777c
    Nitin Gupta authored Jul 29, 2016
    
    
    For PMD aligned (8M) hugepages, we currently allocate
    all four page table levels which is wasteful. We now
    allocate till PMD level only which saves memory usage
    from page tables.
    
    Also, when freeing page table for 8M hugepage backed region,
    make sure we don't try to access non-existent PTE level.
    
    Orabug: 22630259
    
    Signed-off-by: default avatarNitin Gupta <nitin.m.gupta@oracle.com>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    7bc3777c