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
21 select GENERIC_IRQ_PROBE
22 select GENERIC_IRQ_SHOW
23 select GENERIC_SCHED_CLOCK
24 select GENERIC_SMP_IDLE_THREAD
25 select GENERIC_STRNCPY_FROM_USER
26 select GENERIC_STRNLEN_USER
27 select GENERIC_TIME_VSYSCALL
28 select HARDIRQS_SW_RESEND
29 select HAVE_ARCH_JUMP_LABEL
31 select HAVE_ARCH_TRACEHOOK
32 select HAVE_DEBUG_BUGVERBOSE
33 select HAVE_DEBUG_KMEMLEAK
34 select HAVE_DMA_API_DEBUG
36 select HAVE_DMA_CONTIGUOUS
37 select HAVE_EFFICIENT_UNALIGNED_ACCESS
38 select HAVE_GENERIC_DMA_COHERENT
39 select HAVE_HW_BREAKPOINT if PERF_EVENTS
41 select HAVE_PATA_PLATFORM
42 select HAVE_PERF_EVENTS
44 select HAVE_PERF_USER_STACK_DUMP
46 select MODULES_USE_ELF_RELA
49 select OF_EARLY_FLATTREE
50 select OF_RESERVED_MEM
51 select PERF_USE_VMALLOC
56 select SYSCTL_EXCEPTION_TRACE
58 ARM 64-bit (AArch64) Linux support.
63 config ARCH_PHYS_ADDR_T_64BIT
72 config STACKTRACE_SUPPORT
75 config LOCKDEP_SUPPORT
78 config TRACE_IRQFLAGS_SUPPORT
81 config RWSEM_XCHGADD_ALGORITHM
84 config GENERIC_HWEIGHT
90 config GENERIC_CALIBRATE_DELAY
96 config ARCH_DMA_ADDR_T_64BIT
99 config NEED_DMA_MAP_STATE
102 config NEED_SG_DMA_LENGTH
111 config KERNEL_MODE_NEON
114 source "init/Kconfig"
116 source "kernel/Kconfig.freezer"
118 menu "Platform selection"
121 bool "ARMv8 software model (Versatile Express)"
122 select ARCH_REQUIRE_GPIOLIB
123 select COMMON_CLK_VERSATILE
124 select POWER_RESET_VEXPRESS
125 select VEXPRESS_CONFIG
127 This enables support for the ARMv8 software model (Versatile
131 bool "AppliedMicro X-Gene SOC Family"
133 This enables support for AppliedMicro X-Gene SOC Family
144 menu "Kernel Features"
146 config ARM64_64K_PAGES
147 bool "Enable 64KB pages support"
149 This feature enables 64KB pages support (4KB by default)
150 allowing only two levels of page tables and faster TLB
151 look-up. AArch32 emulation is not available when this feature
154 config CPU_BIG_ENDIAN
155 bool "Build big-endian kernel"
157 Say Y if you plan on running a kernel in big-endian mode.
160 bool "Symmetric Multi-Processing"
162 This enables support for systems with more than one CPU. If
163 you say N here, the kernel will run on single and
164 multiprocessor machines, but will use only one CPU of a
165 multiprocessor machine. If you say Y here, the kernel will run
166 on many, but not all, single processor machines. On a single
167 processor machine, the kernel will run faster if you say N
170 If you don't know what to do here, say N.
173 bool "Multi-core scheduler support"
176 Multi-core scheduler support improves the CPU scheduler's decision
177 making when dealing with multi-core CPU chips at a cost of slightly
178 increased overhead in some places. If unsure say N here.
181 bool "SMT scheduler support"
184 Improves the CPU scheduler's decision making when dealing with
185 MultiThreading at a cost of slightly increased overhead in some
186 places. If unsure say N here.
189 int "Maximum number of CPUs (2-32)"
192 # These have to remain sorted largest to smallest
196 bool "Support for hot-pluggable CPUs"
199 Say Y here to experiment with turning CPUs off and on. CPUs
200 can be controlled through /sys/devices/system/cpu.
202 source kernel/Kconfig.preempt
208 config ARCH_HAS_HOLES_MEMORYMODEL
209 def_bool y if SPARSEMEM
211 config ARCH_SPARSEMEM_ENABLE
213 select SPARSEMEM_VMEMMAP_ENABLE
215 config ARCH_SPARSEMEM_DEFAULT
216 def_bool ARCH_SPARSEMEM_ENABLE
218 config ARCH_SELECT_MEMORY_MODEL
219 def_bool ARCH_SPARSEMEM_ENABLE
221 config HAVE_ARCH_PFN_VALID
222 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
224 config HW_PERF_EVENTS
225 bool "Enable hardware performance counter support for perf events"
226 depends on PERF_EVENTS
229 Enable hardware performance counter support for perf events. If
230 disabled, perf events will use software events only.
232 config SYS_SUPPORTS_HUGETLBFS
235 config ARCH_WANT_GENERAL_HUGETLB
238 config ARCH_WANT_HUGE_PMD_SHARE
239 def_bool y if !ARM64_64K_PAGES
241 config HAVE_ARCH_TRANSPARENT_HUGEPAGE
251 bool "Xen guest support on ARM64 (EXPERIMENTAL)"
252 depends on ARM64 && OF
255 Say Y if you want to run Linux in a Virtual Machine on Xen on ARM64.
257 config FORCE_MAX_ZONEORDER
259 default "14" if (ARM64_64K_PAGES && TRANSPARENT_HUGEPAGE)
267 string "Default kernel command string"
270 Provide a set of default command-line options at build time by
271 entering them here. As a minimum, you should specify the the
272 root device (e.g. root=/dev/nfs).
275 bool "Always use the default kernel command string"
277 Always use the default kernel command string, even if the boot
278 loader passes other arguments to the kernel.
279 This is useful if you cannot or don't want to change the
280 command-line options your boot loader passes to the kernel.
284 menu "Userspace binary formats"
286 source "fs/Kconfig.binfmt"
289 bool "Kernel support for 32-bit EL0"
290 depends on !ARM64_64K_PAGES
291 select COMPAT_BINFMT_ELF
293 select OLD_SIGSUSPEND3
294 select COMPAT_OLD_SIGACTION
296 This option enables support for a 32-bit EL0 running under a 64-bit
297 kernel at EL1. AArch32-specific components such as system calls,
298 the user helper functions, VFP support and the ptrace interface are
299 handled appropriately by the kernel.
301 If you want to execute 32-bit userspace applications, say Y.
303 config SYSVIPC_COMPAT
305 depends on COMPAT && SYSVIPC
309 menu "Power management options"
311 source "kernel/power/Kconfig"
313 config ARCH_SUSPEND_POSSIBLE
316 config ARM64_CPU_SUSPEND
321 menu "CPU Power Management"
323 source "drivers/cpuidle/Kconfig"
325 source "kernel/power/Kconfig"
327 source "drivers/cpufreq/Kconfig"
333 source "drivers/Kconfig"
337 source "arch/arm64/kvm/Kconfig"
339 source "arch/arm64/Kconfig.debug"
341 source "security/Kconfig"
343 source "crypto/Kconfig"