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_DYNAMIC_FTRACE
40 select HAVE_EFFICIENT_UNALIGNED_ACCESS
41 select HAVE_FTRACE_MCOUNT_RECORD
42 select HAVE_FUNCTION_TRACER
43 select HAVE_FUNCTION_GRAPH_TRACER
44 select HAVE_GENERIC_DMA_COHERENT
45 select HAVE_HW_BREAKPOINT if PERF_EVENTS
47 select HAVE_PATA_PLATFORM
48 select HAVE_PERF_EVENTS
50 select HAVE_PERF_USER_STACK_DUMP
52 select MODULES_USE_ELF_RELA
55 select OF_EARLY_FLATTREE
56 select OF_RESERVED_MEM
57 select PERF_USE_VMALLOC
62 select SYSCTL_EXCEPTION_TRACE
64 ARM 64-bit (AArch64) Linux support.
69 config ARCH_PHYS_ADDR_T_64BIT
78 config STACKTRACE_SUPPORT
81 config LOCKDEP_SUPPORT
84 config TRACE_IRQFLAGS_SUPPORT
87 config RWSEM_XCHGADD_ALGORITHM
90 config GENERIC_HWEIGHT
96 config GENERIC_CALIBRATE_DELAY
102 config ARCH_DMA_ADDR_T_64BIT
105 config NEED_DMA_MAP_STATE
108 config NEED_SG_DMA_LENGTH
117 config KERNEL_MODE_NEON
120 source "init/Kconfig"
122 source "kernel/Kconfig.freezer"
124 menu "Platform selection"
127 bool "ARMv8 software model (Versatile Express)"
128 select ARCH_REQUIRE_GPIOLIB
129 select COMMON_CLK_VERSATILE
130 select POWER_RESET_VEXPRESS
131 select VEXPRESS_CONFIG
133 This enables support for the ARMv8 software model (Versatile
137 bool "AppliedMicro X-Gene SOC Family"
139 This enables support for AppliedMicro X-Gene SOC Family
150 menu "Kernel Features"
152 config ARM64_64K_PAGES
153 bool "Enable 64KB pages support"
155 This feature enables 64KB pages support (4KB by default)
156 allowing only two levels of page tables and faster TLB
157 look-up. AArch32 emulation is not available when this feature
160 config CPU_BIG_ENDIAN
161 bool "Build big-endian kernel"
163 Say Y if you plan on running a kernel in big-endian mode.
166 bool "Symmetric Multi-Processing"
168 This enables support for systems with more than one CPU. If
169 you say N here, the kernel will run on single and
170 multiprocessor machines, but will use only one CPU of a
171 multiprocessor machine. If you say Y here, the kernel will run
172 on many, but not all, single processor machines. On a single
173 processor machine, the kernel will run faster if you say N
176 If you don't know what to do here, say N.
179 bool "Multi-core scheduler support"
182 Multi-core scheduler support improves the CPU scheduler's decision
183 making when dealing with multi-core CPU chips at a cost of slightly
184 increased overhead in some places. If unsure say N here.
187 bool "SMT scheduler support"
190 Improves the CPU scheduler's decision making when dealing with
191 MultiThreading at a cost of slightly increased overhead in some
192 places. If unsure say N here.
195 int "Maximum number of CPUs (2-32)"
198 # These have to remain sorted largest to smallest
202 bool "Support for hot-pluggable CPUs"
205 Say Y here to experiment with turning CPUs off and on. CPUs
206 can be controlled through /sys/devices/system/cpu.
208 source kernel/Kconfig.preempt
214 config ARCH_HAS_HOLES_MEMORYMODEL
215 def_bool y if SPARSEMEM
217 config ARCH_SPARSEMEM_ENABLE
219 select SPARSEMEM_VMEMMAP_ENABLE
221 config ARCH_SPARSEMEM_DEFAULT
222 def_bool ARCH_SPARSEMEM_ENABLE
224 config ARCH_SELECT_MEMORY_MODEL
225 def_bool ARCH_SPARSEMEM_ENABLE
227 config HAVE_ARCH_PFN_VALID
228 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
230 config HW_PERF_EVENTS
231 bool "Enable hardware performance counter support for perf events"
232 depends on PERF_EVENTS
235 Enable hardware performance counter support for perf events. If
236 disabled, perf events will use software events only.
238 config SYS_SUPPORTS_HUGETLBFS
241 config ARCH_WANT_GENERAL_HUGETLB
244 config ARCH_WANT_HUGE_PMD_SHARE
245 def_bool y if !ARM64_64K_PAGES
247 config HAVE_ARCH_TRANSPARENT_HUGEPAGE
250 config ARCH_HAS_CACHE_LINE_SIZE
260 bool "Xen guest support on ARM64 (EXPERIMENTAL)"
261 depends on ARM64 && OF
264 Say Y if you want to run Linux in a Virtual Machine on Xen on ARM64.
266 config FORCE_MAX_ZONEORDER
268 default "14" if (ARM64_64K_PAGES && TRANSPARENT_HUGEPAGE)
276 string "Default kernel command string"
279 Provide a set of default command-line options at build time by
280 entering them here. As a minimum, you should specify the the
281 root device (e.g. root=/dev/nfs).
284 bool "Always use the default kernel command string"
286 Always use the default kernel command string, even if the boot
287 loader passes other arguments to the kernel.
288 This is useful if you cannot or don't want to change the
289 command-line options your boot loader passes to the kernel.
293 menu "Userspace binary formats"
295 source "fs/Kconfig.binfmt"
298 bool "Kernel support for 32-bit EL0"
299 depends on !ARM64_64K_PAGES
300 select COMPAT_BINFMT_ELF
302 select OLD_SIGSUSPEND3
303 select COMPAT_OLD_SIGACTION
305 This option enables support for a 32-bit EL0 running under a 64-bit
306 kernel at EL1. AArch32-specific components such as system calls,
307 the user helper functions, VFP support and the ptrace interface are
308 handled appropriately by the kernel.
310 If you want to execute 32-bit userspace applications, say Y.
312 config SYSVIPC_COMPAT
314 depends on COMPAT && SYSVIPC
318 menu "Power management options"
320 source "kernel/power/Kconfig"
322 config ARCH_SUSPEND_POSSIBLE
325 config ARM64_CPU_SUSPEND
330 menu "CPU Power Management"
332 source "drivers/cpuidle/Kconfig"
334 source "drivers/cpufreq/Kconfig"
340 source "drivers/Kconfig"
344 source "arch/arm64/kvm/Kconfig"
346 source "arch/arm64/Kconfig.debug"
348 source "security/Kconfig"
350 source "crypto/Kconfig"
352 source "arch/arm64/crypto/Kconfig"