3 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
4 select GENERIC_CLOCKEVENTS
5 select GENERIC_HARDIRQS_NO_DEPRECATED
7 select GENERIC_IRQ_PROBE
8 select GENERIC_IRQ_SHOW
9 select GENERIC_SMP_IDLE_THREAD
10 select GENERIC_TIME_VSYSCALL
11 select HARDIRQS_SW_RESEND
12 select HAVE_ARCH_TRACEHOOK
13 select HAVE_DEBUG_BUGVERBOSE
14 select HAVE_DEBUG_KMEMLEAK
15 select HAVE_DMA_API_DEBUG
17 select HAVE_GENERIC_DMA_COHERENT
18 select HAVE_GENERIC_HARDIRQS
19 select HAVE_HW_BREAKPOINT if PERF_EVENTS
22 select HAVE_PERF_EVENTS
23 select HAVE_SPARSE_IRQ
27 select OF_EARLY_FLATTREE
28 select PERF_USE_VMALLOC
31 select SYSCTL_EXCEPTION_TRACE
33 ARM 64-bit (AArch64) Linux support.
38 config ARCH_PHYS_ADDR_T_64BIT
47 config STACKTRACE_SUPPORT
50 config LOCKDEP_SUPPORT
53 config TRACE_IRQFLAGS_SUPPORT
56 config GENERIC_LOCKBREAK
58 depends on SMP && PREEMPT
60 config RWSEM_GENERIC_SPINLOCK
63 config GENERIC_HWEIGHT
69 config GENERIC_CALIBRATE_DELAY
75 config ARCH_DMA_ADDR_T_64BIT
78 config NEED_DMA_MAP_STATE
81 config NEED_SG_DMA_LENGTH
92 source "kernel/Kconfig.freezer"
105 menu "Kernel Features"
107 source "kernel/time/Kconfig"
109 config ARM64_64K_PAGES
110 bool "Enable 64KB pages support"
112 This feature enables 64KB pages support (4KB by default)
113 allowing only two levels of page tables and faster TLB
114 look-up. AArch32 emulation is not available when this feature
118 bool "Symmetric Multi-Processing"
119 select USE_GENERIC_SMP_HELPERS
121 This enables support for systems with more than one CPU. If
122 you say N here, the kernel will run on single and
123 multiprocessor machines, but will use only one CPU of a
124 multiprocessor machine. If you say Y here, the kernel will run
125 on many, but not all, single processor machines. On a single
126 processor machine, the kernel will run faster if you say N
129 If you don't know what to do here, say N.
132 int "Maximum number of CPUs (2-32)"
137 source kernel/Kconfig.preempt
143 config ARCH_HAS_HOLES_MEMORYMODEL
144 def_bool y if SPARSEMEM
146 config ARCH_SPARSEMEM_ENABLE
148 select SPARSEMEM_VMEMMAP_ENABLE
150 config ARCH_SPARSEMEM_DEFAULT
151 def_bool ARCH_SPARSEMEM_ENABLE
153 config ARCH_SELECT_MEMORY_MODEL
154 def_bool ARCH_SPARSEMEM_ENABLE
156 config HAVE_ARCH_PFN_VALID
157 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
159 config HW_PERF_EVENTS
160 bool "Enable hardware performance counter support for perf events"
161 depends on PERF_EVENTS
164 Enable hardware performance counter support for perf events. If
165 disabled, perf events will use software events only.
174 string "Default kernel command string"
177 Provide a set of default command-line options at build time by
178 entering them here. As a minimum, you should specify the the
179 root device (e.g. root=/dev/nfs).
182 bool "Always use the default kernel command string"
184 Always use the default kernel command string, even if the boot
185 loader passes other arguments to the kernel.
186 This is useful if you cannot or don't want to change the
187 command-line options your boot loader passes to the kernel.
191 menu "Userspace binary formats"
193 source "fs/Kconfig.binfmt"
196 bool "Kernel support for 32-bit EL0"
197 depends on !ARM64_64K_PAGES
198 select COMPAT_BINFMT_ELF
201 This option enables support for a 32-bit EL0 running under a 64-bit
202 kernel at EL1. AArch32-specific components such as system calls,
203 the user helper functions, VFP support and the ptrace interface are
204 handled appropriately by the kernel.
206 If you want to execute 32-bit userspace applications, say Y.
208 config SYSVIPC_COMPAT
210 depends on COMPAT && SYSVIPC
216 source "drivers/Kconfig"
220 source "arch/arm64/Kconfig.debug"
222 source "security/Kconfig"
224 source "crypto/Kconfig"