For huge page support with base page size of 16K or 32K, we have to increase the MAX_ORDER so that huge pages can be allocated. Signed-off-by: David Daney <ddaney@xxxxxxxxxxxxxxxxxx> --- arch/mips/Kconfig | 22 ++++++++++++++++++++++ 1 files changed, 22 insertions(+), 0 deletions(-) diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index fbaf08e..05f90d6 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -1596,6 +1596,28 @@ config PAGE_SIZE_64KB endchoice +config FORCE_MAX_ZONEORDER + int "Maximum zone order" + range 13 64 if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_32KB + default "13" if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_32KB + range 12 64 if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_16KB + default "12" if SYS_SUPPORTS_HUGETLBFS && PAGE_SIZE_16KB + range 11 64 + default "11" + help + The kernel memory allocator divides physically contiguous memory + blocks into "zones", where each zone is a power of two number of + pages. This option selects the largest power of two that the kernel + keeps in the memory allocator. If you need to allocate very large + blocks of physically contiguous memory, then you may need to + increase this value. + + This config option is actually maximum order plus one. For example, + a value of 11 means that the largest free memory block is 2^10 pages. + + The page size is not necessarily 4KB. Keep this in mind + when choosing a value for this option. + config BOARD_SCACHE bool -- 1.7.2.3
