3 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
5 select ARCH_USE_CMPXCHG_LOCKREF
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 DCACHE_WORD_ACCESS
16 select GENERIC_CLOCKEVENTS
17 select GENERIC_EARLY_IOREMAP
19 select GENERIC_IRQ_PROBE
20 select GENERIC_IRQ_SHOW
21 select GENERIC_SMP_IDLE_THREAD
22 select GENERIC_STRNCPY_FROM_USER
23 select GENERIC_STRNLEN_USER
24 select GENERIC_TIME_VSYSCALL
25 select HARDIRQS_SW_RESEND
27 select HAVE_ARCH_TRACEHOOK
28 select HAVE_CC_STACKPROTECTOR
29 select HAVE_DEBUG_BUGVERBOSE
30 select HAVE_DEBUG_KMEMLEAK
31 select HAVE_DMA_API_DEBUG
33 select HAVE_DMA_CONTIGUOUS
34 select HAVE_EFFICIENT_UNALIGNED_ACCESS
35 select HAVE_GENERIC_DMA_COHERENT
36 select HAVE_GENERIC_HARDIRQS
37 select HAVE_HW_BREAKPOINT if PERF_EVENTS
39 select HAVE_PATA_PLATFORM
40 select HAVE_PERF_EVENTS
42 select MODULES_USE_ELF_RELA
45 select OF_EARLY_FLATTREE
46 select OF_RESERVED_MEM
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_XCHGADD_ALGORITHM
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 FIX_EARLYCON_MEM
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
151 bool "Symmetric Multi-Processing"
152 select USE_GENERIC_SMP_HELPERS
154 This enables support for systems with more than one CPU. If
155 you say N here, the kernel will run on single and
156 multiprocessor machines, but will use only one CPU of a
157 multiprocessor machine. If you say Y here, the kernel will run
158 on many, but not all, single processor machines. On a single
159 processor machine, the kernel will run faster if you say N
162 If you don't know what to do here, say N.
165 int "Maximum number of CPUs (2-32)"
168 # These have to remain sorted largest to smallest
172 bool "Support for hot-pluggable CPUs"
175 Say Y here to experiment with turning CPUs off and on. CPUs
176 can be controlled through /sys/devices/system/cpu.
178 source kernel/Kconfig.preempt
184 config ARCH_HAS_HOLES_MEMORYMODEL
185 def_bool y if SPARSEMEM
187 config ARCH_SPARSEMEM_ENABLE
189 select SPARSEMEM_VMEMMAP_ENABLE
191 config ARCH_SPARSEMEM_DEFAULT
192 def_bool ARCH_SPARSEMEM_ENABLE
194 config ARCH_SELECT_MEMORY_MODEL
195 def_bool ARCH_SPARSEMEM_ENABLE
197 config HAVE_ARCH_PFN_VALID
198 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
200 config HW_PERF_EVENTS
201 bool "Enable hardware performance counter support for perf events"
202 depends on PERF_EVENTS
205 Enable hardware performance counter support for perf events. If
206 disabled, perf events will use software events only.
208 config SYS_SUPPORTS_HUGETLBFS
211 config ARCH_WANT_GENERAL_HUGETLB
214 config ARCH_WANT_HUGE_PMD_SHARE
215 def_bool y if !ARM64_64K_PAGES
217 config HAVE_ARCH_TRANSPARENT_HUGEPAGE
222 config FORCE_MAX_ZONEORDER
224 default "14" if (ARM64_64K_PAGES && TRANSPARENT_HUGEPAGE)
232 string "Default kernel command string"
235 Provide a set of default command-line options at build time by
236 entering them here. As a minimum, you should specify the the
237 root device (e.g. root=/dev/nfs).
240 bool "Always use the default kernel command string"
242 Always use the default kernel command string, even if the boot
243 loader passes other arguments to the kernel.
244 This is useful if you cannot or don't want to change the
245 command-line options your boot loader passes to the kernel.
249 menu "Userspace binary formats"
251 source "fs/Kconfig.binfmt"
254 bool "Kernel support for 32-bit EL0"
255 depends on !ARM64_64K_PAGES
256 select COMPAT_BINFMT_ELF
258 select OLD_SIGSUSPEND3
259 select COMPAT_OLD_SIGACTION
261 This option enables support for a 32-bit EL0 running under a 64-bit
262 kernel at EL1. AArch32-specific components such as system calls,
263 the user helper functions, VFP support and the ptrace interface are
264 handled appropriately by the kernel.
266 If you want to execute 32-bit userspace applications, say Y.
268 config SYSVIPC_COMPAT
270 depends on COMPAT && SYSVIPC
276 source "drivers/Kconfig"
280 source "arch/arm64/kvm/Kconfig"
282 source "arch/arm64/Kconfig.debug"
284 source "security/Kconfig"
286 source "crypto/Kconfig"