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_KMEMLEAK
14 select HAVE_DMA_API_DEBUG
16 select HAVE_GENERIC_DMA_COHERENT
17 select HAVE_GENERIC_HARDIRQS
18 select HAVE_HW_BREAKPOINT if PERF_EVENTS
21 select HAVE_PERF_EVENTS
22 select HAVE_SPARSE_IRQ
26 select OF_EARLY_FLATTREE
27 select PERF_USE_VMALLOC
31 ARM 64-bit (AArch64) Linux support.
36 config ARCH_PHYS_ADDR_T_64BIT
45 config STACKTRACE_SUPPORT
48 config LOCKDEP_SUPPORT
51 config TRACE_IRQFLAGS_SUPPORT
54 config GENERIC_LOCKBREAK
56 depends on SMP && PREEMPT
58 config RWSEM_GENERIC_SPINLOCK
61 config GENERIC_HWEIGHT
67 config GENERIC_CALIBRATE_DELAY
73 config ARCH_DMA_ADDR_T_64BIT
76 config NEED_DMA_MAP_STATE
79 config NEED_SG_DMA_LENGTH
90 source "kernel/Kconfig.freezer"
103 menu "Kernel Features"
105 source "kernel/time/Kconfig"
107 config ARM64_64K_PAGES
108 bool "Enable 64KB pages support"
110 This feature enables 64KB pages support (4KB by default)
111 allowing only two levels of page tables and faster TLB
112 look-up. AArch32 emulation is not available when this feature
116 bool "Symmetric Multi-Processing"
117 select USE_GENERIC_SMP_HELPERS
119 This enables support for systems with more than one CPU. If
120 you say N here, the kernel will run on single and
121 multiprocessor machines, but will use only one CPU of a
122 multiprocessor machine. If you say Y here, the kernel will run
123 on many, but not all, single processor machines. On a single
124 processor machine, the kernel will run faster if you say N
127 If you don't know what to do here, say N.
130 int "Maximum number of CPUs (2-32)"
135 source kernel/Kconfig.preempt
141 config ARCH_HAS_HOLES_MEMORYMODEL
142 def_bool y if SPARSEMEM
144 config ARCH_SPARSEMEM_ENABLE
146 select SPARSEMEM_VMEMMAP_ENABLE
148 config ARCH_SPARSEMEM_DEFAULT
149 def_bool ARCH_SPARSEMEM_ENABLE
151 config ARCH_SELECT_MEMORY_MODEL
152 def_bool ARCH_SPARSEMEM_ENABLE
154 config HAVE_ARCH_PFN_VALID
155 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
157 config HW_PERF_EVENTS
158 bool "Enable hardware performance counter support for perf events"
159 depends on PERF_EVENTS
162 Enable hardware performance counter support for perf events. If
163 disabled, perf events will use software events only.
172 string "Default kernel command string"
175 Provide a set of default command-line options at build time by
176 entering them here. As a minimum, you should specify the the
177 root device (e.g. root=/dev/nfs).
180 bool "Always use the default kernel command string"
182 Always use the default kernel command string, even if the boot
183 loader passes other arguments to the kernel.
184 This is useful if you cannot or don't want to change the
185 command-line options your boot loader passes to the kernel.
189 menu "Userspace binary formats"
191 source "fs/Kconfig.binfmt"
194 bool "Kernel support for 32-bit EL0"
195 depends on !ARM64_64K_PAGES
196 select COMPAT_BINFMT_ELF
199 This option enables support for a 32-bit EL0 running under a 64-bit
200 kernel at EL1. AArch32-specific components such as system calls,
201 the user helper functions, VFP support and the ptrace interface are
202 handled appropriately by the kernel.
204 If you want to execute 32-bit userspace applications, say Y.
206 config SYSVIPC_COMPAT
208 depends on COMPAT && SYSVIPC
214 source "drivers/Kconfig"
218 source "arch/arm64/Kconfig.debug"
220 source "security/Kconfig"
222 source "crypto/Kconfig"