3 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
4 select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
8 select GENERIC_CLOCKEVENTS
9 select GENERIC_HARDIRQS_NO_DEPRECATED
11 select GENERIC_IRQ_PROBE
12 select GENERIC_IRQ_SHOW
13 select GENERIC_SMP_IDLE_THREAD
14 select GENERIC_TIME_VSYSCALL
15 select HARDIRQS_SW_RESEND
16 select HAVE_ARCH_TRACEHOOK
17 select HAVE_DEBUG_BUGVERBOSE
18 select HAVE_DEBUG_KMEMLEAK
19 select HAVE_DMA_API_DEBUG
21 select HAVE_GENERIC_DMA_COHERENT
22 select HAVE_GENERIC_HARDIRQS
23 select HAVE_HW_BREAKPOINT if PERF_EVENTS
26 select HAVE_PERF_EVENTS
28 select MODULES_USE_ELF_RELA
31 select OF_EARLY_FLATTREE
32 select PERF_USE_VMALLOC
35 select SYSCTL_EXCEPTION_TRACE
37 ARM 64-bit (AArch64) Linux support.
42 config ARCH_PHYS_ADDR_T_64BIT
51 config STACKTRACE_SUPPORT
54 config LOCKDEP_SUPPORT
57 config TRACE_IRQFLAGS_SUPPORT
60 config GENERIC_LOCKBREAK
62 depends on SMP && PREEMPT
64 config RWSEM_GENERIC_SPINLOCK
67 config GENERIC_HWEIGHT
73 config GENERIC_CALIBRATE_DELAY
79 config ARCH_DMA_ADDR_T_64BIT
82 config NEED_DMA_MAP_STATE
85 config NEED_SG_DMA_LENGTH
99 source "kernel/Kconfig.freezer"
112 menu "Kernel Features"
114 source "kernel/time/Kconfig"
116 config ARM64_64K_PAGES
117 bool "Enable 64KB pages support"
119 This feature enables 64KB pages support (4KB by default)
120 allowing only two levels of page tables and faster TLB
121 look-up. AArch32 emulation is not available when this feature
125 bool "Symmetric Multi-Processing"
126 select USE_GENERIC_SMP_HELPERS
128 This enables support for systems with more than one CPU. If
129 you say N here, the kernel will run on single and
130 multiprocessor machines, but will use only one CPU of a
131 multiprocessor machine. If you say Y here, the kernel will run
132 on many, but not all, single processor machines. On a single
133 processor machine, the kernel will run faster if you say N
136 If you don't know what to do here, say N.
139 int "Maximum number of CPUs (2-32)"
144 source kernel/Kconfig.preempt
150 config ARCH_HAS_HOLES_MEMORYMODEL
151 def_bool y if SPARSEMEM
153 config ARCH_SPARSEMEM_ENABLE
155 select SPARSEMEM_VMEMMAP_ENABLE
157 config ARCH_SPARSEMEM_DEFAULT
158 def_bool ARCH_SPARSEMEM_ENABLE
160 config ARCH_SELECT_MEMORY_MODEL
161 def_bool ARCH_SPARSEMEM_ENABLE
163 config HAVE_ARCH_PFN_VALID
164 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
166 config HW_PERF_EVENTS
167 bool "Enable hardware performance counter support for perf events"
168 depends on PERF_EVENTS
171 Enable hardware performance counter support for perf events. If
172 disabled, perf events will use software events only.
181 string "Default kernel command string"
184 Provide a set of default command-line options at build time by
185 entering them here. As a minimum, you should specify the the
186 root device (e.g. root=/dev/nfs).
189 bool "Always use the default kernel command string"
191 Always use the default kernel command string, even if the boot
192 loader passes other arguments to the kernel.
193 This is useful if you cannot or don't want to change the
194 command-line options your boot loader passes to the kernel.
198 menu "Userspace binary formats"
200 source "fs/Kconfig.binfmt"
203 bool "Kernel support for 32-bit EL0"
204 depends on !ARM64_64K_PAGES
205 select COMPAT_BINFMT_ELF
208 This option enables support for a 32-bit EL0 running under a 64-bit
209 kernel at EL1. AArch32-specific components such as system calls,
210 the user helper functions, VFP support and the ptrace interface are
211 handled appropriately by the kernel.
213 If you want to execute 32-bit userspace applications, say Y.
215 config SYSVIPC_COMPAT
217 depends on COMPAT && SYSVIPC
223 source "drivers/Kconfig"
227 source "arch/arm64/Kconfig.debug"
229 source "security/Kconfig"
231 source "crypto/Kconfig"