3 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
4 select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
7 select GENERIC_CLOCKEVENTS
8 select GENERIC_HARDIRQS_NO_DEPRECATED
10 select GENERIC_IRQ_PROBE
11 select GENERIC_IRQ_SHOW
12 select GENERIC_SMP_IDLE_THREAD
13 select GENERIC_TIME_VSYSCALL
14 select HARDIRQS_SW_RESEND
15 select HAVE_ARCH_TRACEHOOK
16 select HAVE_DEBUG_BUGVERBOSE
17 select HAVE_DEBUG_KMEMLEAK
18 select HAVE_DMA_API_DEBUG
20 select HAVE_GENERIC_DMA_COHERENT
21 select HAVE_GENERIC_HARDIRQS
22 select HAVE_HW_BREAKPOINT if PERF_EVENTS
25 select HAVE_PERF_EVENTS
27 select MODULES_USE_ELF_RELA
30 select OF_EARLY_FLATTREE
31 select PERF_USE_VMALLOC
34 select SYSCTL_EXCEPTION_TRACE
36 ARM 64-bit (AArch64) Linux support.
41 config ARCH_PHYS_ADDR_T_64BIT
50 config STACKTRACE_SUPPORT
53 config LOCKDEP_SUPPORT
56 config TRACE_IRQFLAGS_SUPPORT
59 config GENERIC_LOCKBREAK
61 depends on SMP && PREEMPT
63 config RWSEM_GENERIC_SPINLOCK
66 config GENERIC_HWEIGHT
72 config GENERIC_CALIBRATE_DELAY
78 config ARCH_DMA_ADDR_T_64BIT
81 config NEED_DMA_MAP_STATE
84 config NEED_SG_DMA_LENGTH
95 source "kernel/Kconfig.freezer"
108 menu "Kernel Features"
110 source "kernel/time/Kconfig"
112 config ARM64_64K_PAGES
113 bool "Enable 64KB pages support"
115 This feature enables 64KB pages support (4KB by default)
116 allowing only two levels of page tables and faster TLB
117 look-up. AArch32 emulation is not available when this feature
121 bool "Symmetric Multi-Processing"
122 select USE_GENERIC_SMP_HELPERS
124 This enables support for systems with more than one CPU. If
125 you say N here, the kernel will run on single and
126 multiprocessor machines, but will use only one CPU of a
127 multiprocessor machine. If you say Y here, the kernel will run
128 on many, but not all, single processor machines. On a single
129 processor machine, the kernel will run faster if you say N
132 If you don't know what to do here, say N.
135 int "Maximum number of CPUs (2-32)"
140 source kernel/Kconfig.preempt
146 config ARCH_HAS_HOLES_MEMORYMODEL
147 def_bool y if SPARSEMEM
149 config ARCH_SPARSEMEM_ENABLE
151 select SPARSEMEM_VMEMMAP_ENABLE
153 config ARCH_SPARSEMEM_DEFAULT
154 def_bool ARCH_SPARSEMEM_ENABLE
156 config ARCH_SELECT_MEMORY_MODEL
157 def_bool ARCH_SPARSEMEM_ENABLE
159 config HAVE_ARCH_PFN_VALID
160 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
162 config HW_PERF_EVENTS
163 bool "Enable hardware performance counter support for perf events"
164 depends on PERF_EVENTS
167 Enable hardware performance counter support for perf events. If
168 disabled, perf events will use software events only.
177 string "Default kernel command string"
180 Provide a set of default command-line options at build time by
181 entering them here. As a minimum, you should specify the the
182 root device (e.g. root=/dev/nfs).
185 bool "Always use the default kernel command string"
187 Always use the default kernel command string, even if the boot
188 loader passes other arguments to the kernel.
189 This is useful if you cannot or don't want to change the
190 command-line options your boot loader passes to the kernel.
194 menu "Userspace binary formats"
196 source "fs/Kconfig.binfmt"
199 bool "Kernel support for 32-bit EL0"
200 depends on !ARM64_64K_PAGES
201 select COMPAT_BINFMT_ELF
204 This option enables support for a 32-bit EL0 running under a 64-bit
205 kernel at EL1. AArch32-specific components such as system calls,
206 the user helper functions, VFP support and the ptrace interface are
207 handled appropriately by the kernel.
209 If you want to execute 32-bit userspace applications, say Y.
211 config SYSVIPC_COMPAT
213 depends on COMPAT && SYSVIPC
219 source "drivers/Kconfig"
223 source "arch/arm64/Kconfig.debug"
225 source "security/Kconfig"
227 source "crypto/Kconfig"