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_GENERIC_DMA_COHERENT
42 select HAVE_HW_BREAKPOINT if PERF_EVENTS
44 select HAVE_PATA_PLATFORM
45 select HAVE_PERF_EVENTS
47 select HAVE_PERF_USER_STACK_DUMP
49 select MODULES_USE_ELF_RELA
52 select OF_EARLY_FLATTREE
53 select OF_RESERVED_MEM
54 select PERF_USE_VMALLOC
59 select SYSCTL_EXCEPTION_TRACE
61 ARM 64-bit (AArch64) Linux support.
66 config ARCH_PHYS_ADDR_T_64BIT
75 config STACKTRACE_SUPPORT
78 config LOCKDEP_SUPPORT
81 config TRACE_IRQFLAGS_SUPPORT
84 config RWSEM_XCHGADD_ALGORITHM
87 config GENERIC_HWEIGHT
93 config GENERIC_CALIBRATE_DELAY
99 config ARCH_DMA_ADDR_T_64BIT
102 config NEED_DMA_MAP_STATE
105 config NEED_SG_DMA_LENGTH
114 config KERNEL_MODE_NEON
117 source "init/Kconfig"
119 source "kernel/Kconfig.freezer"
121 menu "Platform selection"
124 bool "ARMv8 software model (Versatile Express)"
125 select ARCH_REQUIRE_GPIOLIB
126 select COMMON_CLK_VERSATILE
127 select POWER_RESET_VEXPRESS
128 select VEXPRESS_CONFIG
130 This enables support for the ARMv8 software model (Versatile
134 bool "AppliedMicro X-Gene SOC Family"
136 This enables support for AppliedMicro X-Gene SOC Family
147 menu "Kernel Features"
149 config ARM64_64K_PAGES
150 bool "Enable 64KB pages support"
152 This feature enables 64KB pages support (4KB by default)
153 allowing only two levels of page tables and faster TLB
154 look-up. AArch32 emulation is not available when this feature
157 config CPU_BIG_ENDIAN
158 bool "Build big-endian kernel"
160 Say Y if you plan on running a kernel in big-endian mode.
163 bool "Symmetric Multi-Processing"
165 This enables support for systems with more than one CPU. If
166 you say N here, the kernel will run on single and
167 multiprocessor machines, but will use only one CPU of a
168 multiprocessor machine. If you say Y here, the kernel will run
169 on many, but not all, single processor machines. On a single
170 processor machine, the kernel will run faster if you say N
173 If you don't know what to do here, say N.
176 bool "Multi-core scheduler support"
179 Multi-core scheduler support improves the CPU scheduler's decision
180 making when dealing with multi-core CPU chips at a cost of slightly
181 increased overhead in some places. If unsure say N here.
184 bool "SMT scheduler support"
187 Improves the CPU scheduler's decision making when dealing with
188 MultiThreading at a cost of slightly increased overhead in some
189 places. If unsure say N here.
192 int "Maximum number of CPUs (2-32)"
195 # These have to remain sorted largest to smallest
199 bool "Support for hot-pluggable CPUs"
202 Say Y here to experiment with turning CPUs off and on. CPUs
203 can be controlled through /sys/devices/system/cpu.
205 source kernel/Kconfig.preempt
211 config ARCH_HAS_HOLES_MEMORYMODEL
212 def_bool y if SPARSEMEM
214 config ARCH_SPARSEMEM_ENABLE
216 select SPARSEMEM_VMEMMAP_ENABLE
218 config ARCH_SPARSEMEM_DEFAULT
219 def_bool ARCH_SPARSEMEM_ENABLE
221 config ARCH_SELECT_MEMORY_MODEL
222 def_bool ARCH_SPARSEMEM_ENABLE
224 config HAVE_ARCH_PFN_VALID
225 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
227 config HW_PERF_EVENTS
228 bool "Enable hardware performance counter support for perf events"
229 depends on PERF_EVENTS
232 Enable hardware performance counter support for perf events. If
233 disabled, perf events will use software events only.
235 config SYS_SUPPORTS_HUGETLBFS
238 config ARCH_WANT_GENERAL_HUGETLB
241 config ARCH_WANT_HUGE_PMD_SHARE
242 def_bool y if !ARM64_64K_PAGES
244 config HAVE_ARCH_TRANSPARENT_HUGEPAGE
247 config ARCH_HAS_CACHE_LINE_SIZE
257 bool "Xen guest support on ARM64 (EXPERIMENTAL)"
258 depends on ARM64 && OF
261 Say Y if you want to run Linux in a Virtual Machine on Xen on ARM64.
263 config FORCE_MAX_ZONEORDER
265 default "14" if (ARM64_64K_PAGES && TRANSPARENT_HUGEPAGE)
273 string "Default kernel command string"
276 Provide a set of default command-line options at build time by
277 entering them here. As a minimum, you should specify the the
278 root device (e.g. root=/dev/nfs).
281 bool "Always use the default kernel command string"
283 Always use the default kernel command string, even if the boot
284 loader passes other arguments to the kernel.
285 This is useful if you cannot or don't want to change the
286 command-line options your boot loader passes to the kernel.
290 menu "Userspace binary formats"
292 source "fs/Kconfig.binfmt"
295 bool "Kernel support for 32-bit EL0"
296 depends on !ARM64_64K_PAGES
297 select COMPAT_BINFMT_ELF
299 select OLD_SIGSUSPEND3
300 select COMPAT_OLD_SIGACTION
302 This option enables support for a 32-bit EL0 running under a 64-bit
303 kernel at EL1. AArch32-specific components such as system calls,
304 the user helper functions, VFP support and the ptrace interface are
305 handled appropriately by the kernel.
307 If you want to execute 32-bit userspace applications, say Y.
309 config SYSVIPC_COMPAT
311 depends on COMPAT && SYSVIPC
315 menu "Power management options"
317 source "kernel/power/Kconfig"
319 config ARCH_SUSPEND_POSSIBLE
322 config ARM64_CPU_SUSPEND
327 menu "CPU Power Management"
329 source "drivers/cpuidle/Kconfig"
331 source "drivers/cpufreq/Kconfig"
337 source "drivers/Kconfig"
341 source "arch/arm64/kvm/Kconfig"
343 source "arch/arm64/Kconfig.debug"
345 source "security/Kconfig"
347 source "crypto/Kconfig"
349 source "arch/arm64/crypto/Kconfig"