3 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
4 select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
5 select ARCH_WANT_FRAME_POINTERS
10 select GENERIC_CLOCKEVENTS
11 select GENERIC_HARDIRQS_NO_DEPRECATED
13 select GENERIC_IRQ_PROBE
14 select GENERIC_IRQ_SHOW
15 select GENERIC_SMP_IDLE_THREAD
16 select GENERIC_TIME_VSYSCALL
17 select HARDIRQS_SW_RESEND
18 select HAVE_ARCH_TRACEHOOK
19 select HAVE_DEBUG_BUGVERBOSE
20 select HAVE_DEBUG_KMEMLEAK
21 select HAVE_DMA_API_DEBUG
23 select HAVE_GENERIC_DMA_COHERENT
24 select HAVE_GENERIC_HARDIRQS
25 select HAVE_HW_BREAKPOINT if PERF_EVENTS
27 select HAVE_PERF_EVENTS
29 select MODULES_USE_ELF_RELA
32 select OF_EARLY_FLATTREE
33 select PERF_USE_VMALLOC
36 select SYSCTL_EXCEPTION_TRACE
38 ARM 64-bit (AArch64) Linux support.
43 config ARCH_PHYS_ADDR_T_64BIT
52 config STACKTRACE_SUPPORT
55 config LOCKDEP_SUPPORT
58 config TRACE_IRQFLAGS_SUPPORT
61 config GENERIC_LOCKBREAK
63 depends on SMP && PREEMPT
65 config RWSEM_GENERIC_SPINLOCK
68 config GENERIC_HWEIGHT
74 config GENERIC_CALIBRATE_DELAY
80 config ARCH_DMA_ADDR_T_64BIT
83 config NEED_DMA_MAP_STATE
86 config NEED_SG_DMA_LENGTH
100 source "kernel/Kconfig.freezer"
113 menu "Kernel Features"
115 source "kernel/time/Kconfig"
117 config ARM64_64K_PAGES
118 bool "Enable 64KB pages support"
120 This feature enables 64KB pages support (4KB by default)
121 allowing only two levels of page tables and faster TLB
122 look-up. AArch32 emulation is not available when this feature
126 bool "Symmetric Multi-Processing"
127 select USE_GENERIC_SMP_HELPERS
129 This enables support for systems with more than one CPU. If
130 you say N here, the kernel will run on single and
131 multiprocessor machines, but will use only one CPU of a
132 multiprocessor machine. If you say Y here, the kernel will run
133 on many, but not all, single processor machines. On a single
134 processor machine, the kernel will run faster if you say N
137 If you don't know what to do here, say N.
140 int "Maximum number of CPUs (2-32)"
145 source kernel/Kconfig.preempt
151 config ARCH_HAS_HOLES_MEMORYMODEL
152 def_bool y if SPARSEMEM
154 config ARCH_SPARSEMEM_ENABLE
156 select SPARSEMEM_VMEMMAP_ENABLE
158 config ARCH_SPARSEMEM_DEFAULT
159 def_bool ARCH_SPARSEMEM_ENABLE
161 config ARCH_SELECT_MEMORY_MODEL
162 def_bool ARCH_SPARSEMEM_ENABLE
164 config HAVE_ARCH_PFN_VALID
165 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
167 config HW_PERF_EVENTS
168 bool "Enable hardware performance counter support for perf events"
169 depends on PERF_EVENTS
172 Enable hardware performance counter support for perf events. If
173 disabled, perf events will use software events only.
182 string "Default kernel command string"
185 Provide a set of default command-line options at build time by
186 entering them here. As a minimum, you should specify the the
187 root device (e.g. root=/dev/nfs).
190 bool "Always use the default kernel command string"
192 Always use the default kernel command string, even if the boot
193 loader passes other arguments to the kernel.
194 This is useful if you cannot or don't want to change the
195 command-line options your boot loader passes to the kernel.
199 menu "Userspace binary formats"
201 source "fs/Kconfig.binfmt"
204 bool "Kernel support for 32-bit EL0"
205 depends on !ARM64_64K_PAGES
206 select COMPAT_BINFMT_ELF
208 select OLD_SIGSUSPEND3
209 select COMPAT_OLD_SIGACTION
211 This option enables support for a 32-bit EL0 running under a 64-bit
212 kernel at EL1. AArch32-specific components such as system calls,
213 the user helper functions, VFP support and the ptrace interface are
214 handled appropriately by the kernel.
216 If you want to execute 32-bit userspace applications, say Y.
218 config SYSVIPC_COMPAT
220 depends on COMPAT && SYSVIPC
226 source "drivers/Kconfig"
230 source "arch/arm64/Kconfig.debug"
232 source "security/Kconfig"
234 source "crypto/Kconfig"