3 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
4 select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
5 select GENERIC_CLOCKEVENTS
6 select GENERIC_HARDIRQS_NO_DEPRECATED
8 select GENERIC_IRQ_PROBE
9 select GENERIC_IRQ_SHOW
10 select GENERIC_KERNEL_EXECVE
11 select GENERIC_KERNEL_THREAD
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
26 select HAVE_SPARSE_IRQ
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
96 source "kernel/Kconfig.freezer"
109 menu "Kernel Features"
111 source "kernel/time/Kconfig"
113 config ARM64_64K_PAGES
114 bool "Enable 64KB pages support"
116 This feature enables 64KB pages support (4KB by default)
117 allowing only two levels of page tables and faster TLB
118 look-up. AArch32 emulation is not available when this feature
122 bool "Symmetric Multi-Processing"
123 select USE_GENERIC_SMP_HELPERS
125 This enables support for systems with more than one CPU. If
126 you say N here, the kernel will run on single and
127 multiprocessor machines, but will use only one CPU of a
128 multiprocessor machine. If you say Y here, the kernel will run
129 on many, but not all, single processor machines. On a single
130 processor machine, the kernel will run faster if you say N
133 If you don't know what to do here, say N.
136 int "Maximum number of CPUs (2-32)"
141 source kernel/Kconfig.preempt
147 config ARCH_HAS_HOLES_MEMORYMODEL
148 def_bool y if SPARSEMEM
150 config ARCH_SPARSEMEM_ENABLE
152 select SPARSEMEM_VMEMMAP_ENABLE
154 config ARCH_SPARSEMEM_DEFAULT
155 def_bool ARCH_SPARSEMEM_ENABLE
157 config ARCH_SELECT_MEMORY_MODEL
158 def_bool ARCH_SPARSEMEM_ENABLE
160 config HAVE_ARCH_PFN_VALID
161 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
163 config HW_PERF_EVENTS
164 bool "Enable hardware performance counter support for perf events"
165 depends on PERF_EVENTS
168 Enable hardware performance counter support for perf events. If
169 disabled, perf events will use software events only.
178 string "Default kernel command string"
181 Provide a set of default command-line options at build time by
182 entering them here. As a minimum, you should specify the the
183 root device (e.g. root=/dev/nfs).
186 bool "Always use the default kernel command string"
188 Always use the default kernel command string, even if the boot
189 loader passes other arguments to the kernel.
190 This is useful if you cannot or don't want to change the
191 command-line options your boot loader passes to the kernel.
195 menu "Userspace binary formats"
197 source "fs/Kconfig.binfmt"
200 bool "Kernel support for 32-bit EL0"
201 depends on !ARM64_64K_PAGES
202 select COMPAT_BINFMT_ELF
205 This option enables support for a 32-bit EL0 running under a 64-bit
206 kernel at EL1. AArch32-specific components such as system calls,
207 the user helper functions, VFP support and the ptrace interface are
208 handled appropriately by the kernel.
210 If you want to execute 32-bit userspace applications, say Y.
212 config SYSVIPC_COMPAT
214 depends on COMPAT && SYSVIPC
220 source "drivers/Kconfig"
224 source "arch/arm64/Kconfig.debug"
226 source "security/Kconfig"
228 source "crypto/Kconfig"