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_DEBUG_BUGVERBOSE
34 select HAVE_DEBUG_KMEMLEAK
35 select HAVE_DMA_API_DEBUG
37 select HAVE_DMA_CONTIGUOUS
38 select HAVE_EFFICIENT_UNALIGNED_ACCESS
39 select HAVE_GENERIC_DMA_COHERENT
40 select HAVE_HW_BREAKPOINT if PERF_EVENTS
42 select HAVE_PATA_PLATFORM
43 select HAVE_PERF_EVENTS
45 select HAVE_PERF_USER_STACK_DUMP
47 select MODULES_USE_ELF_RELA
50 select OF_EARLY_FLATTREE
51 select OF_RESERVED_MEM
52 select PERF_USE_VMALLOC
57 select SYSCTL_EXCEPTION_TRACE
59 ARM 64-bit (AArch64) Linux support.
64 config ARCH_PHYS_ADDR_T_64BIT
73 config STACKTRACE_SUPPORT
76 config LOCKDEP_SUPPORT
79 config TRACE_IRQFLAGS_SUPPORT
82 config RWSEM_XCHGADD_ALGORITHM
85 config GENERIC_HWEIGHT
91 config GENERIC_CALIBRATE_DELAY
97 config ARCH_DMA_ADDR_T_64BIT
100 config NEED_DMA_MAP_STATE
103 config NEED_SG_DMA_LENGTH
112 config KERNEL_MODE_NEON
115 source "init/Kconfig"
117 source "kernel/Kconfig.freezer"
119 menu "Platform selection"
122 bool "ARMv8 software model (Versatile Express)"
123 select ARCH_REQUIRE_GPIOLIB
124 select COMMON_CLK_VERSATILE
125 select POWER_RESET_VEXPRESS
126 select VEXPRESS_CONFIG
128 This enables support for the ARMv8 software model (Versatile
132 bool "AppliedMicro X-Gene SOC Family"
134 This enables support for AppliedMicro X-Gene SOC Family
145 menu "Kernel Features"
147 config ARM64_64K_PAGES
148 bool "Enable 64KB pages support"
150 This feature enables 64KB pages support (4KB by default)
151 allowing only two levels of page tables and faster TLB
152 look-up. AArch32 emulation is not available when this feature
155 config CPU_BIG_ENDIAN
156 bool "Build big-endian kernel"
158 Say Y if you plan on running a kernel in big-endian mode.
161 bool "Symmetric Multi-Processing"
163 This enables support for systems with more than one CPU. If
164 you say N here, the kernel will run on single and
165 multiprocessor machines, but will use only one CPU of a
166 multiprocessor machine. If you say Y here, the kernel will run
167 on many, but not all, single processor machines. On a single
168 processor machine, the kernel will run faster if you say N
171 If you don't know what to do here, say N.
174 bool "Multi-core scheduler support"
177 Multi-core scheduler support improves the CPU scheduler's decision
178 making when dealing with multi-core CPU chips at a cost of slightly
179 increased overhead in some places. If unsure say N here.
182 bool "SMT scheduler support"
185 Improves the CPU scheduler's decision making when dealing with
186 MultiThreading at a cost of slightly increased overhead in some
187 places. If unsure say N here.
190 int "Maximum number of CPUs (2-32)"
193 # These have to remain sorted largest to smallest
197 bool "Support for hot-pluggable CPUs"
200 Say Y here to experiment with turning CPUs off and on. CPUs
201 can be controlled through /sys/devices/system/cpu.
203 source kernel/Kconfig.preempt
209 config ARCH_HAS_HOLES_MEMORYMODEL
210 def_bool y if SPARSEMEM
212 config ARCH_SPARSEMEM_ENABLE
214 select SPARSEMEM_VMEMMAP_ENABLE
216 config ARCH_SPARSEMEM_DEFAULT
217 def_bool ARCH_SPARSEMEM_ENABLE
219 config ARCH_SELECT_MEMORY_MODEL
220 def_bool ARCH_SPARSEMEM_ENABLE
222 config HAVE_ARCH_PFN_VALID
223 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
225 config HW_PERF_EVENTS
226 bool "Enable hardware performance counter support for perf events"
227 depends on PERF_EVENTS
230 Enable hardware performance counter support for perf events. If
231 disabled, perf events will use software events only.
233 config SYS_SUPPORTS_HUGETLBFS
236 config ARCH_WANT_GENERAL_HUGETLB
239 config ARCH_WANT_HUGE_PMD_SHARE
240 def_bool y if !ARM64_64K_PAGES
242 config HAVE_ARCH_TRANSPARENT_HUGEPAGE
252 bool "Xen guest support on ARM64 (EXPERIMENTAL)"
253 depends on ARM64 && OF
256 Say Y if you want to run Linux in a Virtual Machine on Xen on ARM64.
258 config FORCE_MAX_ZONEORDER
260 default "14" if (ARM64_64K_PAGES && TRANSPARENT_HUGEPAGE)
268 string "Default kernel command string"
271 Provide a set of default command-line options at build time by
272 entering them here. As a minimum, you should specify the the
273 root device (e.g. root=/dev/nfs).
276 bool "Always use the default kernel command string"
278 Always use the default kernel command string, even if the boot
279 loader passes other arguments to the kernel.
280 This is useful if you cannot or don't want to change the
281 command-line options your boot loader passes to the kernel.
285 menu "Userspace binary formats"
287 source "fs/Kconfig.binfmt"
290 bool "Kernel support for 32-bit EL0"
291 depends on !ARM64_64K_PAGES
292 select COMPAT_BINFMT_ELF
294 select OLD_SIGSUSPEND3
295 select COMPAT_OLD_SIGACTION
297 This option enables support for a 32-bit EL0 running under a 64-bit
298 kernel at EL1. AArch32-specific components such as system calls,
299 the user helper functions, VFP support and the ptrace interface are
300 handled appropriately by the kernel.
302 If you want to execute 32-bit userspace applications, say Y.
304 config SYSVIPC_COMPAT
306 depends on COMPAT && SYSVIPC
310 menu "Power management options"
312 source "kernel/power/Kconfig"
314 config ARCH_SUSPEND_POSSIBLE
317 config ARM64_CPU_SUSPEND
322 menu "CPU Power Management"
324 source "drivers/cpuidle/Kconfig"
326 source "kernel/power/Kconfig"
328 source "drivers/cpufreq/Kconfig"
334 source "drivers/Kconfig"
338 source "arch/arm64/kvm/Kconfig"
340 source "arch/arm64/Kconfig.debug"
342 source "security/Kconfig"
344 source "crypto/Kconfig"