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
20 select GENERIC_IRQ_PROBE
21 select GENERIC_IRQ_SHOW
22 select GENERIC_SCHED_CLOCK
23 select GENERIC_SMP_IDLE_THREAD
24 select GENERIC_STRNCPY_FROM_USER
25 select GENERIC_STRNLEN_USER
26 select GENERIC_TIME_VSYSCALL
27 select HARDIRQS_SW_RESEND
28 select HAVE_ARCH_JUMP_LABEL
30 select HAVE_ARCH_TRACEHOOK
31 select HAVE_DEBUG_BUGVERBOSE
32 select HAVE_DEBUG_KMEMLEAK
33 select HAVE_DMA_API_DEBUG
35 select HAVE_DMA_CONTIGUOUS
36 select HAVE_EFFICIENT_UNALIGNED_ACCESS
37 select HAVE_GENERIC_DMA_COHERENT
38 select HAVE_HW_BREAKPOINT if PERF_EVENTS
40 select HAVE_PATA_PLATFORM
41 select HAVE_PERF_EVENTS
43 select MODULES_USE_ELF_RELA
46 select OF_EARLY_FLATTREE
47 select PERF_USE_VMALLOC
52 select SYSCTL_EXCEPTION_TRACE
54 ARM 64-bit (AArch64) Linux support.
59 config ARCH_PHYS_ADDR_T_64BIT
68 config STACKTRACE_SUPPORT
71 config LOCKDEP_SUPPORT
74 config TRACE_IRQFLAGS_SUPPORT
77 config RWSEM_GENERIC_SPINLOCK
80 config GENERIC_HWEIGHT
86 config GENERIC_CALIBRATE_DELAY
92 config ARCH_DMA_ADDR_T_64BIT
95 config NEED_DMA_MAP_STATE
98 config NEED_SG_DMA_LENGTH
107 config KERNEL_MODE_NEON
110 source "init/Kconfig"
112 source "kernel/Kconfig.freezer"
114 menu "Platform selection"
117 bool "ARMv8 software model (Versatile Express)"
118 select ARCH_REQUIRE_GPIOLIB
119 select COMMON_CLK_VERSATILE
120 select POWER_RESET_VEXPRESS
121 select VEXPRESS_CONFIG
123 This enables support for the ARMv8 software model (Versatile
127 bool "AppliedMicro X-Gene SOC Family"
129 This enables support for AppliedMicro X-Gene SOC Family
140 menu "Kernel Features"
142 config ARM64_64K_PAGES
143 bool "Enable 64KB pages support"
145 This feature enables 64KB pages support (4KB by default)
146 allowing only two levels of page tables and faster TLB
147 look-up. AArch32 emulation is not available when this feature
150 config CPU_BIG_ENDIAN
151 bool "Build big-endian kernel"
153 Say Y if you plan on running a kernel in big-endian mode.
156 bool "Symmetric Multi-Processing"
158 This enables support for systems with more than one CPU. If
159 you say N here, the kernel will run on single and
160 multiprocessor machines, but will use only one CPU of a
161 multiprocessor machine. If you say Y here, the kernel will run
162 on many, but not all, single processor machines. On a single
163 processor machine, the kernel will run faster if you say N
166 If you don't know what to do here, say N.
169 bool "Multi-core scheduler support"
172 Multi-core scheduler support improves the CPU scheduler's decision
173 making when dealing with multi-core CPU chips at a cost of slightly
174 increased overhead in some places. If unsure say N here.
177 bool "SMT scheduler support"
180 Improves the CPU scheduler's decision making when dealing with
181 MultiThreading at a cost of slightly increased overhead in some
182 places. If unsure say N here.
185 int "Maximum number of CPUs (2-32)"
188 # These have to remain sorted largest to smallest
192 bool "Support for hot-pluggable CPUs"
195 Say Y here to experiment with turning CPUs off and on. CPUs
196 can be controlled through /sys/devices/system/cpu.
198 source kernel/Kconfig.preempt
204 config ARCH_HAS_HOLES_MEMORYMODEL
205 def_bool y if SPARSEMEM
207 config ARCH_SPARSEMEM_ENABLE
209 select SPARSEMEM_VMEMMAP_ENABLE
211 config ARCH_SPARSEMEM_DEFAULT
212 def_bool ARCH_SPARSEMEM_ENABLE
214 config ARCH_SELECT_MEMORY_MODEL
215 def_bool ARCH_SPARSEMEM_ENABLE
217 config HAVE_ARCH_PFN_VALID
218 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
220 config HW_PERF_EVENTS
221 bool "Enable hardware performance counter support for perf events"
222 depends on PERF_EVENTS
225 Enable hardware performance counter support for perf events. If
226 disabled, perf events will use software events only.
228 config SYS_SUPPORTS_HUGETLBFS
231 config ARCH_WANT_GENERAL_HUGETLB
234 config ARCH_WANT_HUGE_PMD_SHARE
235 def_bool y if !ARM64_64K_PAGES
237 config HAVE_ARCH_TRANSPARENT_HUGEPAGE
247 bool "Xen guest support on ARM64 (EXPERIMENTAL)"
248 depends on ARM64 && OF
251 Say Y if you want to run Linux in a Virtual Machine on Xen on ARM64.
253 config FORCE_MAX_ZONEORDER
255 default "14" if (ARM64_64K_PAGES && TRANSPARENT_HUGEPAGE)
263 string "Default kernel command string"
266 Provide a set of default command-line options at build time by
267 entering them here. As a minimum, you should specify the the
268 root device (e.g. root=/dev/nfs).
271 bool "Always use the default kernel command string"
273 Always use the default kernel command string, even if the boot
274 loader passes other arguments to the kernel.
275 This is useful if you cannot or don't want to change the
276 command-line options your boot loader passes to the kernel.
280 menu "Userspace binary formats"
282 source "fs/Kconfig.binfmt"
285 bool "Kernel support for 32-bit EL0"
286 depends on !ARM64_64K_PAGES
287 select COMPAT_BINFMT_ELF
289 select OLD_SIGSUSPEND3
290 select COMPAT_OLD_SIGACTION
292 This option enables support for a 32-bit EL0 running under a 64-bit
293 kernel at EL1. AArch32-specific components such as system calls,
294 the user helper functions, VFP support and the ptrace interface are
295 handled appropriately by the kernel.
297 If you want to execute 32-bit userspace applications, say Y.
299 config SYSVIPC_COMPAT
301 depends on COMPAT && SYSVIPC
305 menu "Power management options"
307 source "kernel/power/Kconfig"
309 config ARCH_SUSPEND_POSSIBLE
312 config ARM64_CPU_SUSPEND
317 menu "CPU Power Management"
319 source "drivers/cpuidle/Kconfig"
323 menu "Power management options"
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"