3 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
4 select ARCH_USE_CMPXCHG_LOCKREF
5 select ARCH_WANT_OPTIONAL_GPIOLIB
6 select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
7 select ARCH_WANT_FRAME_POINTERS
11 select BUILDTIME_EXTABLE_SORT
12 select CLONE_BACKWARDS
14 select GENERIC_CLOCKEVENTS
16 select GENERIC_IRQ_PROBE
17 select GENERIC_IRQ_SHOW
18 select GENERIC_SMP_IDLE_THREAD
19 select GENERIC_TIME_VSYSCALL
20 select HARDIRQS_SW_RESEND
21 select HAVE_ARCH_TRACEHOOK
22 select HAVE_DEBUG_BUGVERBOSE
23 select HAVE_DEBUG_KMEMLEAK
24 select HAVE_DMA_API_DEBUG
26 select HAVE_GENERIC_DMA_COHERENT
27 select HAVE_HW_BREAKPOINT if PERF_EVENTS
29 select HAVE_PERF_EVENTS
31 select MODULES_USE_ELF_RELA
34 select OF_EARLY_FLATTREE
35 select PERF_USE_VMALLOC
40 select SYSCTL_EXCEPTION_TRACE
42 ARM 64-bit (AArch64) Linux support.
47 config ARCH_PHYS_ADDR_T_64BIT
56 config STACKTRACE_SUPPORT
59 config LOCKDEP_SUPPORT
62 config TRACE_IRQFLAGS_SUPPORT
65 config GENERIC_LOCKBREAK
67 depends on SMP && PREEMPT
69 config RWSEM_GENERIC_SPINLOCK
72 config GENERIC_HWEIGHT
78 config GENERIC_CALIBRATE_DELAY
84 config ARCH_DMA_ADDR_T_64BIT
87 config NEED_DMA_MAP_STATE
90 config NEED_SG_DMA_LENGTH
99 config KERNEL_MODE_NEON
102 source "init/Kconfig"
104 source "kernel/Kconfig.freezer"
106 menu "Platform selection"
109 bool "ARMv8 software model (Versatile Express)"
110 select ARCH_REQUIRE_GPIOLIB
111 select COMMON_CLK_VERSATILE
112 select POWER_RESET_VEXPRESS
113 select VEXPRESS_CONFIG
115 This enables support for the ARMv8 software model (Versatile
119 bool "AppliedMicro X-Gene SOC Family"
121 This enables support for AppliedMicro X-Gene SOC Family
132 menu "Kernel Features"
134 config ARM64_64K_PAGES
135 bool "Enable 64KB pages support"
137 This feature enables 64KB pages support (4KB by default)
138 allowing only two levels of page tables and faster TLB
139 look-up. AArch32 emulation is not available when this feature
143 bool "Symmetric Multi-Processing"
144 select USE_GENERIC_SMP_HELPERS
146 This enables support for systems with more than one CPU. If
147 you say N here, the kernel will run on single and
148 multiprocessor machines, but will use only one CPU of a
149 multiprocessor machine. If you say Y here, the kernel will run
150 on many, but not all, single processor machines. On a single
151 processor machine, the kernel will run faster if you say N
154 If you don't know what to do here, say N.
157 int "Maximum number of CPUs (2-32)"
160 # These have to remain sorted largest to smallest
161 default "8" if ARCH_XGENE
165 bool "Support for hot-pluggable CPUs"
168 Say Y here to experiment with turning CPUs off and on. CPUs
169 can be controlled through /sys/devices/system/cpu.
171 source kernel/Kconfig.preempt
177 config ARCH_HAS_HOLES_MEMORYMODEL
178 def_bool y if SPARSEMEM
180 config ARCH_SPARSEMEM_ENABLE
182 select SPARSEMEM_VMEMMAP_ENABLE
184 config ARCH_SPARSEMEM_DEFAULT
185 def_bool ARCH_SPARSEMEM_ENABLE
187 config ARCH_SELECT_MEMORY_MODEL
188 def_bool ARCH_SPARSEMEM_ENABLE
190 config HAVE_ARCH_PFN_VALID
191 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
193 config HW_PERF_EVENTS
194 bool "Enable hardware performance counter support for perf events"
195 depends on PERF_EVENTS
198 Enable hardware performance counter support for perf events. If
199 disabled, perf events will use software events only.
201 config SYS_SUPPORTS_HUGETLBFS
204 config ARCH_WANT_GENERAL_HUGETLB
207 config ARCH_WANT_HUGE_PMD_SHARE
208 def_bool y if !ARM64_64K_PAGES
210 config HAVE_ARCH_TRANSPARENT_HUGEPAGE
220 bool "Xen guest support on ARM64 (EXPERIMENTAL)"
221 depends on ARM64 && OF
223 Say Y if you want to run Linux in a Virtual Machine on Xen on ARM64.
225 config FORCE_MAX_ZONEORDER
227 default "14" if (ARM64_64K_PAGES && TRANSPARENT_HUGEPAGE)
235 string "Default kernel command string"
238 Provide a set of default command-line options at build time by
239 entering them here. As a minimum, you should specify the the
240 root device (e.g. root=/dev/nfs).
243 bool "Always use the default kernel command string"
245 Always use the default kernel command string, even if the boot
246 loader passes other arguments to the kernel.
247 This is useful if you cannot or don't want to change the
248 command-line options your boot loader passes to the kernel.
252 menu "Userspace binary formats"
254 source "fs/Kconfig.binfmt"
257 bool "Kernel support for 32-bit EL0"
258 depends on !ARM64_64K_PAGES
259 select COMPAT_BINFMT_ELF
261 select OLD_SIGSUSPEND3
262 select COMPAT_OLD_SIGACTION
264 This option enables support for a 32-bit EL0 running under a 64-bit
265 kernel at EL1. AArch32-specific components such as system calls,
266 the user helper functions, VFP support and the ptrace interface are
267 handled appropriately by the kernel.
269 If you want to execute 32-bit userspace applications, say Y.
271 config SYSVIPC_COMPAT
273 depends on COMPAT && SYSVIPC
279 source "drivers/Kconfig"
283 source "arch/arm64/kvm/Kconfig"
285 source "arch/arm64/Kconfig.debug"
287 source "security/Kconfig"
289 source "crypto/Kconfig"