3 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
4 select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
8 select GENERIC_CLOCKEVENTS
9 select GENERIC_HARDIRQS_NO_DEPRECATED
11 select GENERIC_IRQ_PROBE
12 select GENERIC_IRQ_SHOW
13 select GENERIC_SMP_IDLE_THREAD
14 select GENERIC_TIME_VSYSCALL
15 select HARDIRQS_SW_RESEND
16 select HAVE_ARCH_TRACEHOOK
17 select HAVE_DEBUG_BUGVERBOSE
18 select HAVE_DEBUG_KMEMLEAK
19 select HAVE_DMA_API_DEBUG
21 select HAVE_GENERIC_DMA_COHERENT
22 select HAVE_GENERIC_HARDIRQS
23 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
98 source "kernel/Kconfig.freezer"
111 menu "Kernel Features"
113 source "kernel/time/Kconfig"
115 config ARM64_64K_PAGES
116 bool "Enable 64KB pages support"
118 This feature enables 64KB pages support (4KB by default)
119 allowing only two levels of page tables and faster TLB
120 look-up. AArch32 emulation is not available when this feature
124 bool "Symmetric Multi-Processing"
125 select USE_GENERIC_SMP_HELPERS
127 This enables support for systems with more than one CPU. If
128 you say N here, the kernel will run on single and
129 multiprocessor machines, but will use only one CPU of a
130 multiprocessor machine. If you say Y here, the kernel will run
131 on many, but not all, single processor machines. On a single
132 processor machine, the kernel will run faster if you say N
135 If you don't know what to do here, say N.
138 int "Maximum number of CPUs (2-32)"
143 source kernel/Kconfig.preempt
149 config ARCH_HAS_HOLES_MEMORYMODEL
150 def_bool y if SPARSEMEM
152 config ARCH_SPARSEMEM_ENABLE
154 select SPARSEMEM_VMEMMAP_ENABLE
156 config ARCH_SPARSEMEM_DEFAULT
157 def_bool ARCH_SPARSEMEM_ENABLE
159 config ARCH_SELECT_MEMORY_MODEL
160 def_bool ARCH_SPARSEMEM_ENABLE
162 config HAVE_ARCH_PFN_VALID
163 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
165 config HW_PERF_EVENTS
166 bool "Enable hardware performance counter support for perf events"
167 depends on PERF_EVENTS
170 Enable hardware performance counter support for perf events. If
171 disabled, perf events will use software events only.
180 string "Default kernel command string"
183 Provide a set of default command-line options at build time by
184 entering them here. As a minimum, you should specify the the
185 root device (e.g. root=/dev/nfs).
188 bool "Always use the default kernel command string"
190 Always use the default kernel command string, even if the boot
191 loader passes other arguments to the kernel.
192 This is useful if you cannot or don't want to change the
193 command-line options your boot loader passes to the kernel.
197 menu "Userspace binary formats"
199 source "fs/Kconfig.binfmt"
202 bool "Kernel support for 32-bit EL0"
203 depends on !ARM64_64K_PAGES
204 select COMPAT_BINFMT_ELF
207 This option enables support for a 32-bit EL0 running under a 64-bit
208 kernel at EL1. AArch32-specific components such as system calls,
209 the user helper functions, VFP support and the ptrace interface are
210 handled appropriately by the kernel.
212 If you want to execute 32-bit userspace applications, say Y.
214 config SYSVIPC_COMPAT
216 depends on COMPAT && SYSVIPC
222 source "drivers/Kconfig"
226 source "arch/arm64/Kconfig.debug"
228 source "security/Kconfig"
230 source "crypto/Kconfig"