git.baikalelectronics.ru Git - kernel.git/commit

]> git.baikalelectronics.ru Git - kernel.git/commit

author	Nitin Gupta <nitin.m.gupta@oracle.com>
	Fri, 29 Jul 2016 07:54:21 +0000 (00:54 -0700)
committer	David S. Miller <davem@davemloft.net>
	Fri, 29 Jul 2016 17:49:16 +0000 (10:49 -0700)
commit	b7fed1e8bff441296b7285ea130484770945157d
tree	baaa60bd0a6dfe46a902d7e151005b013f340e7f	tree \| snapshot
parent	3db827a0616faf2f22030ea3afe06aefe3e20664	commit \| diff

sparc64: Trim page tables for 8M hugepages

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: Nitin Gupta <nitin.m.gupta@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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arch/sparc/include/asm/hugetlb.h		diff \| blob \| history
arch/sparc/include/asm/pgtable_64.h		diff \| blob \| history
arch/sparc/include/asm/tsb.h		diff \| blob \| history
arch/sparc/mm/fault_64.c		diff \| blob \| history
arch/sparc/mm/hugetlbpage.c		diff \| blob \| history
arch/sparc/mm/init_64.c		diff \| blob \| history