3 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
4 select ARCH_WANT_OPTIONAL_GPIOLIB
5 select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
6 select ARCH_WANT_FRAME_POINTERS
11 select GENERIC_CLOCKEVENTS
12 select GENERIC_HARDIRQS_NO_DEPRECATED
14 select GENERIC_IRQ_PROBE
15 select GENERIC_IRQ_SHOW
16 select GENERIC_SMP_IDLE_THREAD
17 select GENERIC_TIME_VSYSCALL
18 select HARDIRQS_SW_RESEND
19 select HAVE_ARCH_TRACEHOOK
20 select HAVE_DEBUG_BUGVERBOSE
21 select HAVE_DEBUG_KMEMLEAK
22 select HAVE_DMA_API_DEBUG
24 select HAVE_GENERIC_DMA_COHERENT
25 select HAVE_GENERIC_HARDIRQS
26 select HAVE_HW_BREAKPOINT if PERF_EVENTS
28 select HAVE_PERF_EVENTS
30 select MODULES_USE_ELF_RELA
33 select OF_EARLY_FLATTREE
34 select PERF_USE_VMALLOC
37 select SYSCTL_EXCEPTION_TRACE
39 ARM 64-bit (AArch64) Linux support.
44 config ARCH_PHYS_ADDR_T_64BIT
53 config STACKTRACE_SUPPORT
56 config LOCKDEP_SUPPORT
59 config TRACE_IRQFLAGS_SUPPORT
62 config GENERIC_LOCKBREAK
64 depends on SMP && PREEMPT
66 config RWSEM_GENERIC_SPINLOCK
69 config GENERIC_HWEIGHT
75 config GENERIC_CALIBRATE_DELAY
81 config ARCH_DMA_ADDR_T_64BIT
84 config NEED_DMA_MAP_STATE
87 config NEED_SG_DMA_LENGTH
101 source "kernel/Kconfig.freezer"
114 menu "Kernel Features"
116 source "kernel/time/Kconfig"
118 config ARM64_64K_PAGES
119 bool "Enable 64KB pages support"
121 This feature enables 64KB pages support (4KB by default)
122 allowing only two levels of page tables and faster TLB
123 look-up. AArch32 emulation is not available when this feature
127 bool "Symmetric Multi-Processing"
128 select USE_GENERIC_SMP_HELPERS
130 This enables support for systems with more than one CPU. If
131 you say N here, the kernel will run on single and
132 multiprocessor machines, but will use only one CPU of a
133 multiprocessor machine. If you say Y here, the kernel will run
134 on many, but not all, single processor machines. On a single
135 processor machine, the kernel will run faster if you say N
138 If you don't know what to do here, say N.
141 int "Maximum number of CPUs (2-32)"
146 source kernel/Kconfig.preempt
152 config ARCH_HAS_HOLES_MEMORYMODEL
153 def_bool y if SPARSEMEM
155 config ARCH_SPARSEMEM_ENABLE
157 select SPARSEMEM_VMEMMAP_ENABLE
159 config ARCH_SPARSEMEM_DEFAULT
160 def_bool ARCH_SPARSEMEM_ENABLE
162 config ARCH_SELECT_MEMORY_MODEL
163 def_bool ARCH_SPARSEMEM_ENABLE
165 config HAVE_ARCH_PFN_VALID
166 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
168 config HW_PERF_EVENTS
169 bool "Enable hardware performance counter support for perf events"
170 depends on PERF_EVENTS
173 Enable hardware performance counter support for perf events. If
174 disabled, perf events will use software events only.
183 string "Default kernel command string"
186 Provide a set of default command-line options at build time by
187 entering them here. As a minimum, you should specify the the
188 root device (e.g. root=/dev/nfs).
191 bool "Always use the default kernel command string"
193 Always use the default kernel command string, even if the boot
194 loader passes other arguments to the kernel.
195 This is useful if you cannot or don't want to change the
196 command-line options your boot loader passes to the kernel.
200 menu "Userspace binary formats"
202 source "fs/Kconfig.binfmt"
205 bool "Kernel support for 32-bit EL0"
206 depends on !ARM64_64K_PAGES
207 select COMPAT_BINFMT_ELF
209 select OLD_SIGSUSPEND3
210 select COMPAT_OLD_SIGACTION
212 This option enables support for a 32-bit EL0 running under a 64-bit
213 kernel at EL1. AArch32-specific components such as system calls,
214 the user helper functions, VFP support and the ptrace interface are
215 handled appropriately by the kernel.
217 If you want to execute 32-bit userspace applications, say Y.
219 config SYSVIPC_COMPAT
221 depends on COMPAT && SYSVIPC
227 source "drivers/Kconfig"
231 source "arch/arm64/Kconfig.debug"
233 source "security/Kconfig"
235 source "crypto/Kconfig"