select ARCH_DISCARD_MEMBLOCK
select GENERIC_SMP_IDLE_THREAD
select BUILDTIME_EXTABLE_SORT
+ select GENERIC_CPU_AUTOPROBE
select GENERIC_CLOCKEVENTS
select GENERIC_SCHED_CLOCK if !CAVIUM_OCTEON_SOC
select GENERIC_CMOS_UPDATE
select HANDLE_DOMAIN_IRQ
select HAVE_EXIT_THREAD
select HAVE_REGS_AND_STACK_ACCESS_API
+ select HAVE_COPY_THREAD_TLS
menu "Machine selection"
config RWSEM_XCHGADD_ALGORITHM
bool
-config ARCH_HAS_ILOG2_U32
- bool
- default n
-
-config ARCH_HAS_ILOG2_U64
- bool
- default n
-
config GENERIC_HWEIGHT
bool
default y
select WEAK_ORDERING
select WEAK_REORDERING_BEYOND_LLSC
select MIPS_PGD_C0_CONTEXT
+ select MIPS_L1_CACHE_SHIFT_6
select GPIOLIB
help
The Loongson 3 processor implements the MIPS64R2 instruction
bool "48 bits virtual memory"
depends on 64BIT
help
- Support a maximum at least 48 bits of application virtual memory.
- Default is 40 bits or less, depending on the CPU.
- This option result in a small memory overhead for page tables.
- This option is only supported with 16k and 64k page sizes.
+ Support a maximum at least 48 bits of application virtual
+ memory. Default is 40 bits or less, depending on the CPU.
+ For page sizes 16k and above, this option results in a small
+ memory overhead for page tables. For 4k page size, a fourth
+ level of page tables is added which imposes both a memory
+ overhead as well as slower TLB fault handling.
+
If unsure, say N.
choice
config PAGE_SIZE_4KB
bool "4kB"
depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
- depends on !MIPS_VA_BITS_48
help
This option select the standard 4kB Linux page size. On some
R3000-family processors this is the only available page size. Using
config PGTABLE_LEVELS
int
+ default 4 if PAGE_SIZE_4KB && MIPS_VA_BITS_48
default 3 if 64BIT && !PAGE_SIZE_64KB
default 2