menu "Memory management options" config PAGE_OFFSET hex "Kernel page offset address" default "0x40000000" help This option allows you to set the virtual address at which the kernel will be mapped to. endmenu config KERNEL_4M_PAGES bool "Map kernel with 4MB pages" depends on METAG_META21_MMU default y help Map the kernel with large pages to reduce TLB pressure. choice prompt "User page size" default PAGE_SIZE_4K config PAGE_SIZE_4K bool "4kB" help This is the default page size used by all Meta cores. config PAGE_SIZE_8K bool "8kB" depends on METAG_META21_MMU help This enables 8kB pages as supported by Meta 2.x and later MMUs. config PAGE_SIZE_16K bool "16kB" depends on METAG_META21_MMU help This enables 16kB pages as supported by Meta 2.x and later MMUs. endchoice config NUMA bool "Non Uniform Memory Access (NUMA) Support" select ARCH_WANT_NUMA_VARIABLE_LOCALITY help Some Meta systems have MMU-mappable on-chip memories with lower latencies than main memory. This enables support for these blocks by binding them to nodes and allowing memory policies to be used for prioritizing and controlling allocation behaviour. config FORCE_MAX_ZONEORDER int "Maximum zone order" range 10 32 default "10" 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 METAG_L2C bool "Level 2 Cache Support" depends on METAG_META21 help Press y here to enable support for the Meta Level 2 (L2) cache. This will enable the cache at start up if it hasn't already been enabled by the bootloader. If the bootloader enables the L2 you must press y here to ensure the kernel takes the appropriate actions to keep the cache coherent. config NODES_SHIFT int default "1" depends on NEED_MULTIPLE_NODES config ARCH_FLATMEM_ENABLE def_bool y depends on !NUMA config ARCH_SPARSEMEM_ENABLE def_bool y select SPARSEMEM_STATIC config ARCH_SPARSEMEM_DEFAULT def_bool y config ARCH_SELECT_MEMORY_MODEL def_bool y config SYS_SUPPORTS_HUGETLBFS def_bool y depends on METAG_META21_MMU choice prompt "HugeTLB page size" depends on METAG_META21_MMU && HUGETLB_PAGE default HUGETLB_PAGE_SIZE_1M config HUGETLB_PAGE_SIZE_8K bool "8kB" depends on PAGE_SIZE_4K config HUGETLB_PAGE_SIZE_16K bool "16kB" depends on PAGE_SIZE_4K || PAGE_SIZE_8K config HUGETLB_PAGE_SIZE_32K bool "32kB" config HUGETLB_PAGE_SIZE_64K bool "64kB" config HUGETLB_PAGE_SIZE_128K bool "128kB" config HUGETLB_PAGE_SIZE_256K bool "256kB" config HUGETLB_PAGE_SIZE_512K bool "512kB" config HUGETLB_PAGE_SIZE_1M bool "1MB" config HUGETLB_PAGE_SIZE_2M bool "2MB" config HUGETLB_PAGE_SIZE_4M bool "4MB" endchoice config METAG_COREMEM bool default y if SUSPEND source "mm/Kconfig"