3 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
4 select GENERIC_CLOCKEVENTS
5 select GENERIC_HARDIRQS_NO_DEPRECATED
7 select GENERIC_IRQ_PROBE
8 select GENERIC_IRQ_SHOW
9 select GENERIC_SMP_IDLE_THREAD
10 select GENERIC_TIME_VSYSCALL
11 select HARDIRQS_SW_RESEND
12 select HAVE_ARCH_TRACEHOOK
13 select HAVE_DEBUG_BUGVERBOSE
14 select HAVE_DEBUG_KMEMLEAK
15 select HAVE_DMA_API_DEBUG
17 select HAVE_GENERIC_DMA_COHERENT
18 select HAVE_GENERIC_HARDIRQS
19 select HAVE_HW_BREAKPOINT if PERF_EVENTS
22 select HAVE_PERF_EVENTS
23 select HAVE_SPARSE_IRQ
27 select OF_EARLY_FLATTREE
28 select PERF_USE_VMALLOC
32 ARM 64-bit (AArch64) Linux support.
37 config ARCH_PHYS_ADDR_T_64BIT
46 config STACKTRACE_SUPPORT
49 config LOCKDEP_SUPPORT
52 config TRACE_IRQFLAGS_SUPPORT
55 config GENERIC_LOCKBREAK
57 depends on SMP && PREEMPT
59 config RWSEM_GENERIC_SPINLOCK
62 config GENERIC_HWEIGHT
68 config GENERIC_CALIBRATE_DELAY
74 config ARCH_DMA_ADDR_T_64BIT
77 config NEED_DMA_MAP_STATE
80 config NEED_SG_DMA_LENGTH
91 source "kernel/Kconfig.freezer"
104 menu "Kernel Features"
106 source "kernel/time/Kconfig"
108 config ARM64_64K_PAGES
109 bool "Enable 64KB pages support"
111 This feature enables 64KB pages support (4KB by default)
112 allowing only two levels of page tables and faster TLB
113 look-up. AArch32 emulation is not available when this feature
117 bool "Symmetric Multi-Processing"
118 select USE_GENERIC_SMP_HELPERS
120 This enables support for systems with more than one CPU. If
121 you say N here, the kernel will run on single and
122 multiprocessor machines, but will use only one CPU of a
123 multiprocessor machine. If you say Y here, the kernel will run
124 on many, but not all, single processor machines. On a single
125 processor machine, the kernel will run faster if you say N
128 If you don't know what to do here, say N.
131 int "Maximum number of CPUs (2-32)"
136 source kernel/Kconfig.preempt
142 config ARCH_HAS_HOLES_MEMORYMODEL
143 def_bool y if SPARSEMEM
145 config ARCH_SPARSEMEM_ENABLE
147 select SPARSEMEM_VMEMMAP_ENABLE
149 config ARCH_SPARSEMEM_DEFAULT
150 def_bool ARCH_SPARSEMEM_ENABLE
152 config ARCH_SELECT_MEMORY_MODEL
153 def_bool ARCH_SPARSEMEM_ENABLE
155 config HAVE_ARCH_PFN_VALID
156 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
158 config HW_PERF_EVENTS
159 bool "Enable hardware performance counter support for perf events"
160 depends on PERF_EVENTS
163 Enable hardware performance counter support for perf events. If
164 disabled, perf events will use software events only.
173 string "Default kernel command string"
176 Provide a set of default command-line options at build time by
177 entering them here. As a minimum, you should specify the the
178 root device (e.g. root=/dev/nfs).
181 bool "Always use the default kernel command string"
183 Always use the default kernel command string, even if the boot
184 loader passes other arguments to the kernel.
185 This is useful if you cannot or don't want to change the
186 command-line options your boot loader passes to the kernel.
190 menu "Userspace binary formats"
192 source "fs/Kconfig.binfmt"
195 bool "Kernel support for 32-bit EL0"
196 depends on !ARM64_64K_PAGES
197 select COMPAT_BINFMT_ELF
200 This option enables support for a 32-bit EL0 running under a 64-bit
201 kernel at EL1. AArch32-specific components such as system calls,
202 the user helper functions, VFP support and the ptrace interface are
203 handled appropriately by the kernel.
205 If you want to execute 32-bit userspace applications, say Y.
207 config SYSVIPC_COMPAT
209 depends on COMPAT && SYSVIPC
215 source "drivers/Kconfig"
219 source "arch/arm64/Kconfig.debug"
221 source "security/Kconfig"
223 source "crypto/Kconfig"