3 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
4 select ARCH_USE_CMPXCHG_LOCKREF
5 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
6 select ARCH_WANT_OPTIONAL_GPIOLIB
7 select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
8 select ARCH_WANT_FRAME_POINTERS
12 select BUILDTIME_EXTABLE_SORT
13 select CLONE_BACKWARDS
15 select CPU_PM if (SUSPEND || CPU_IDLE)
16 select DCACHE_WORD_ACCESS
17 select GENERIC_CLOCKEVENTS
18 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
19 select GENERIC_CPU_AUTOPROBE
20 select GENERIC_EARLY_IOREMAP
22 select GENERIC_IRQ_PROBE
23 select GENERIC_IRQ_SHOW
24 select GENERIC_SCHED_CLOCK
25 select GENERIC_SMP_IDLE_THREAD
26 select GENERIC_STRNCPY_FROM_USER
27 select GENERIC_STRNLEN_USER
28 select GENERIC_TIME_VSYSCALL
29 select HARDIRQS_SW_RESEND
30 select HAVE_ARCH_JUMP_LABEL
32 select HAVE_ARCH_TRACEHOOK
33 select HAVE_C_RECORDMCOUNT
34 select HAVE_DEBUG_BUGVERBOSE
35 select HAVE_DEBUG_KMEMLEAK
36 select HAVE_DMA_API_DEBUG
38 select HAVE_DMA_CONTIGUOUS
39 select HAVE_EFFICIENT_UNALIGNED_ACCESS
40 select HAVE_FTRACE_MCOUNT_RECORD
41 select HAVE_FUNCTION_TRACER
42 select HAVE_FUNCTION_GRAPH_TRACER
43 select HAVE_GENERIC_DMA_COHERENT
44 select HAVE_HW_BREAKPOINT if PERF_EVENTS
46 select HAVE_PATA_PLATFORM
47 select HAVE_PERF_EVENTS
49 select HAVE_PERF_USER_STACK_DUMP
51 select MODULES_USE_ELF_RELA
54 select OF_EARLY_FLATTREE
55 select OF_RESERVED_MEM
56 select PERF_USE_VMALLOC
61 select SYSCTL_EXCEPTION_TRACE
63 ARM 64-bit (AArch64) Linux support.
68 config ARCH_PHYS_ADDR_T_64BIT
77 config STACKTRACE_SUPPORT
80 config LOCKDEP_SUPPORT
83 config TRACE_IRQFLAGS_SUPPORT
86 config RWSEM_XCHGADD_ALGORITHM
89 config GENERIC_HWEIGHT
95 config GENERIC_CALIBRATE_DELAY
101 config ARCH_DMA_ADDR_T_64BIT
104 config NEED_DMA_MAP_STATE
107 config NEED_SG_DMA_LENGTH
116 config KERNEL_MODE_NEON
119 source "init/Kconfig"
121 source "kernel/Kconfig.freezer"
123 menu "Platform selection"
126 bool "ARMv8 software model (Versatile Express)"
127 select ARCH_REQUIRE_GPIOLIB
128 select COMMON_CLK_VERSATILE
129 select POWER_RESET_VEXPRESS
130 select VEXPRESS_CONFIG
132 This enables support for the ARMv8 software model (Versatile
136 bool "AppliedMicro X-Gene SOC Family"
138 This enables support for AppliedMicro X-Gene SOC Family
149 menu "Kernel Features"
151 config ARM64_64K_PAGES
152 bool "Enable 64KB pages support"
154 This feature enables 64KB pages support (4KB by default)
155 allowing only two levels of page tables and faster TLB
156 look-up. AArch32 emulation is not available when this feature
159 config CPU_BIG_ENDIAN
160 bool "Build big-endian kernel"
162 Say Y if you plan on running a kernel in big-endian mode.
165 bool "Symmetric Multi-Processing"
167 This enables support for systems with more than one CPU. If
168 you say N here, the kernel will run on single and
169 multiprocessor machines, but will use only one CPU of a
170 multiprocessor machine. If you say Y here, the kernel will run
171 on many, but not all, single processor machines. On a single
172 processor machine, the kernel will run faster if you say N
175 If you don't know what to do here, say N.
178 bool "Multi-core scheduler support"
181 Multi-core scheduler support improves the CPU scheduler's decision
182 making when dealing with multi-core CPU chips at a cost of slightly
183 increased overhead in some places. If unsure say N here.
186 bool "SMT scheduler support"
189 Improves the CPU scheduler's decision making when dealing with
190 MultiThreading at a cost of slightly increased overhead in some
191 places. If unsure say N here.
194 int "Maximum number of CPUs (2-32)"
197 # These have to remain sorted largest to smallest
201 bool "Support for hot-pluggable CPUs"
204 Say Y here to experiment with turning CPUs off and on. CPUs
205 can be controlled through /sys/devices/system/cpu.
207 source kernel/Kconfig.preempt
213 config ARCH_HAS_HOLES_MEMORYMODEL
214 def_bool y if SPARSEMEM
216 config ARCH_SPARSEMEM_ENABLE
218 select SPARSEMEM_VMEMMAP_ENABLE
220 config ARCH_SPARSEMEM_DEFAULT
221 def_bool ARCH_SPARSEMEM_ENABLE
223 config ARCH_SELECT_MEMORY_MODEL
224 def_bool ARCH_SPARSEMEM_ENABLE
226 config HAVE_ARCH_PFN_VALID
227 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
229 config HW_PERF_EVENTS
230 bool "Enable hardware performance counter support for perf events"
231 depends on PERF_EVENTS
234 Enable hardware performance counter support for perf events. If
235 disabled, perf events will use software events only.
237 config SYS_SUPPORTS_HUGETLBFS
240 config ARCH_WANT_GENERAL_HUGETLB
243 config ARCH_WANT_HUGE_PMD_SHARE
244 def_bool y if !ARM64_64K_PAGES
246 config HAVE_ARCH_TRANSPARENT_HUGEPAGE
249 config ARCH_HAS_CACHE_LINE_SIZE
259 bool "Xen guest support on ARM64 (EXPERIMENTAL)"
260 depends on ARM64 && OF
263 Say Y if you want to run Linux in a Virtual Machine on Xen on ARM64.
265 config FORCE_MAX_ZONEORDER
267 default "14" if (ARM64_64K_PAGES && TRANSPARENT_HUGEPAGE)
275 string "Default kernel command string"
278 Provide a set of default command-line options at build time by
279 entering them here. As a minimum, you should specify the the
280 root device (e.g. root=/dev/nfs).
283 bool "Always use the default kernel command string"
285 Always use the default kernel command string, even if the boot
286 loader passes other arguments to the kernel.
287 This is useful if you cannot or don't want to change the
288 command-line options your boot loader passes to the kernel.
292 menu "Userspace binary formats"
294 source "fs/Kconfig.binfmt"
297 bool "Kernel support for 32-bit EL0"
298 depends on !ARM64_64K_PAGES
299 select COMPAT_BINFMT_ELF
301 select OLD_SIGSUSPEND3
302 select COMPAT_OLD_SIGACTION
304 This option enables support for a 32-bit EL0 running under a 64-bit
305 kernel at EL1. AArch32-specific components such as system calls,
306 the user helper functions, VFP support and the ptrace interface are
307 handled appropriately by the kernel.
309 If you want to execute 32-bit userspace applications, say Y.
311 config SYSVIPC_COMPAT
313 depends on COMPAT && SYSVIPC
317 menu "Power management options"
319 source "kernel/power/Kconfig"
321 config ARCH_SUSPEND_POSSIBLE
324 config ARM64_CPU_SUSPEND
329 menu "CPU Power Management"
331 source "drivers/cpuidle/Kconfig"
333 source "drivers/cpufreq/Kconfig"
339 source "drivers/Kconfig"
343 source "arch/arm64/kvm/Kconfig"
345 source "arch/arm64/Kconfig.debug"
347 source "security/Kconfig"
349 source "crypto/Kconfig"
351 source "arch/arm64/crypto/Kconfig"