3 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
4 select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
8 select GENERIC_CLOCKEVENTS
9 select GENERIC_COMPAT_RT_SIGACTION
10 select GENERIC_COMPAT_RT_SIGPENDING
11 select GENERIC_COMPAT_RT_SIGPROCMASK
12 select GENERIC_COMPAT_RT_SIGQUEUEINFO
13 select GENERIC_HARDIRQS_NO_DEPRECATED
15 select GENERIC_IRQ_PROBE
16 select GENERIC_IRQ_SHOW
17 select GENERIC_SIGALTSTACK
18 select GENERIC_SMP_IDLE_THREAD
19 select GENERIC_TIME_VSYSCALL
20 select HARDIRQS_SW_RESEND
21 select HAVE_ARCH_TRACEHOOK
22 select HAVE_DEBUG_BUGVERBOSE
23 select HAVE_DEBUG_KMEMLEAK
24 select HAVE_DMA_API_DEBUG
26 select HAVE_GENERIC_DMA_COHERENT
27 select HAVE_GENERIC_HARDIRQS
28 select HAVE_HW_BREAKPOINT if PERF_EVENTS
31 select HAVE_PERF_EVENTS
33 select MODULES_USE_ELF_RELA
36 select OF_EARLY_FLATTREE
37 select PERF_USE_VMALLOC
40 select SYSCTL_EXCEPTION_TRACE
42 ARM 64-bit (AArch64) Linux support.
47 config ARCH_PHYS_ADDR_T_64BIT
56 config STACKTRACE_SUPPORT
59 config LOCKDEP_SUPPORT
62 config TRACE_IRQFLAGS_SUPPORT
65 config GENERIC_LOCKBREAK
67 depends on SMP && PREEMPT
69 config RWSEM_GENERIC_SPINLOCK
72 config GENERIC_HWEIGHT
78 config GENERIC_CALIBRATE_DELAY
84 config ARCH_DMA_ADDR_T_64BIT
87 config NEED_DMA_MAP_STATE
90 config NEED_SG_DMA_LENGTH
102 source "init/Kconfig"
104 source "kernel/Kconfig.freezer"
117 menu "Kernel Features"
119 source "kernel/time/Kconfig"
121 config ARM64_64K_PAGES
122 bool "Enable 64KB pages support"
124 This feature enables 64KB pages support (4KB by default)
125 allowing only two levels of page tables and faster TLB
126 look-up. AArch32 emulation is not available when this feature
130 bool "Symmetric Multi-Processing"
131 select USE_GENERIC_SMP_HELPERS
133 This enables support for systems with more than one CPU. If
134 you say N here, the kernel will run on single and
135 multiprocessor machines, but will use only one CPU of a
136 multiprocessor machine. If you say Y here, the kernel will run
137 on many, but not all, single processor machines. On a single
138 processor machine, the kernel will run faster if you say N
141 If you don't know what to do here, say N.
144 int "Maximum number of CPUs (2-32)"
149 source kernel/Kconfig.preempt
155 config ARCH_HAS_HOLES_MEMORYMODEL
156 def_bool y if SPARSEMEM
158 config ARCH_SPARSEMEM_ENABLE
160 select SPARSEMEM_VMEMMAP_ENABLE
162 config ARCH_SPARSEMEM_DEFAULT
163 def_bool ARCH_SPARSEMEM_ENABLE
165 config ARCH_SELECT_MEMORY_MODEL
166 def_bool ARCH_SPARSEMEM_ENABLE
168 config HAVE_ARCH_PFN_VALID
169 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
171 config HW_PERF_EVENTS
172 bool "Enable hardware performance counter support for perf events"
173 depends on PERF_EVENTS
176 Enable hardware performance counter support for perf events. If
177 disabled, perf events will use software events only.
186 string "Default kernel command string"
189 Provide a set of default command-line options at build time by
190 entering them here. As a minimum, you should specify the the
191 root device (e.g. root=/dev/nfs).
194 bool "Always use the default kernel command string"
196 Always use the default kernel command string, even if the boot
197 loader passes other arguments to the kernel.
198 This is useful if you cannot or don't want to change the
199 command-line options your boot loader passes to the kernel.
203 menu "Userspace binary formats"
205 source "fs/Kconfig.binfmt"
208 bool "Kernel support for 32-bit EL0"
209 depends on !ARM64_64K_PAGES
210 select COMPAT_BINFMT_ELF
212 select OLD_SIGSUSPEND3
213 select COMPAT_OLD_SIGACTION
215 This option enables support for a 32-bit EL0 running under a 64-bit
216 kernel at EL1. AArch32-specific components such as system calls,
217 the user helper functions, VFP support and the ptrace interface are
218 handled appropriately by the kernel.
220 If you want to execute 32-bit userspace applications, say Y.
222 config SYSVIPC_COMPAT
224 depends on COMPAT && SYSVIPC
230 source "drivers/Kconfig"
234 source "arch/arm64/Kconfig.debug"
236 source "security/Kconfig"
238 source "crypto/Kconfig"