1# SPDX-License-Identifier: GPL-2.0 2config LOONGARCH 3 bool 4 default y 5 select ACPI 6 select ACPI_GENERIC_GSI if ACPI 7 select ACPI_MCFG if ACPI 8 select ACPI_PPTT if ACPI 9 select ACPI_SYSTEM_POWER_STATES_SUPPORT if ACPI 10 select ARCH_BINFMT_ELF_STATE 11 select ARCH_ENABLE_MEMORY_HOTPLUG 12 select ARCH_ENABLE_MEMORY_HOTREMOVE 13 select ARCH_HAS_ACPI_TABLE_UPGRADE if ACPI 14 select ARCH_HAS_CPU_FINALIZE_INIT 15 select ARCH_HAS_FORTIFY_SOURCE 16 select ARCH_HAS_NMI_SAFE_THIS_CPU_OPS 17 select ARCH_HAS_PTE_SPECIAL 18 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST 19 select ARCH_INLINE_READ_LOCK if !PREEMPTION 20 select ARCH_INLINE_READ_LOCK_BH if !PREEMPTION 21 select ARCH_INLINE_READ_LOCK_IRQ if !PREEMPTION 22 select ARCH_INLINE_READ_LOCK_IRQSAVE if !PREEMPTION 23 select ARCH_INLINE_READ_UNLOCK if !PREEMPTION 24 select ARCH_INLINE_READ_UNLOCK_BH if !PREEMPTION 25 select ARCH_INLINE_READ_UNLOCK_IRQ if !PREEMPTION 26 select ARCH_INLINE_READ_UNLOCK_IRQRESTORE if !PREEMPTION 27 select ARCH_INLINE_WRITE_LOCK if !PREEMPTION 28 select ARCH_INLINE_WRITE_LOCK_BH if !PREEMPTION 29 select ARCH_INLINE_WRITE_LOCK_IRQ if !PREEMPTION 30 select ARCH_INLINE_WRITE_LOCK_IRQSAVE if !PREEMPTION 31 select ARCH_INLINE_WRITE_UNLOCK if !PREEMPTION 32 select ARCH_INLINE_WRITE_UNLOCK_BH if !PREEMPTION 33 select ARCH_INLINE_WRITE_UNLOCK_IRQ if !PREEMPTION 34 select ARCH_INLINE_WRITE_UNLOCK_IRQRESTORE if !PREEMPTION 35 select ARCH_INLINE_SPIN_TRYLOCK if !PREEMPTION 36 select ARCH_INLINE_SPIN_TRYLOCK_BH if !PREEMPTION 37 select ARCH_INLINE_SPIN_LOCK if !PREEMPTION 38 select ARCH_INLINE_SPIN_LOCK_BH if !PREEMPTION 39 select ARCH_INLINE_SPIN_LOCK_IRQ if !PREEMPTION 40 select ARCH_INLINE_SPIN_LOCK_IRQSAVE if !PREEMPTION 41 select ARCH_INLINE_SPIN_UNLOCK if !PREEMPTION 42 select ARCH_INLINE_SPIN_UNLOCK_BH if !PREEMPTION 43 select ARCH_INLINE_SPIN_UNLOCK_IRQ if !PREEMPTION 44 select ARCH_INLINE_SPIN_UNLOCK_IRQRESTORE if !PREEMPTION 45 select ARCH_KEEP_MEMBLOCK 46 select ARCH_MIGHT_HAVE_PC_PARPORT 47 select ARCH_MIGHT_HAVE_PC_SERIO 48 select ARCH_SPARSEMEM_ENABLE 49 select ARCH_STACKWALK 50 select ARCH_SUPPORTS_ACPI 51 select ARCH_SUPPORTS_ATOMIC_RMW 52 select ARCH_SUPPORTS_HUGETLBFS 53 select ARCH_SUPPORTS_LTO_CLANG 54 select ARCH_SUPPORTS_LTO_CLANG_THIN 55 select ARCH_SUPPORTS_NUMA_BALANCING 56 select ARCH_USE_BUILTIN_BSWAP 57 select ARCH_USE_CMPXCHG_LOCKREF 58 select ARCH_USE_QUEUED_RWLOCKS 59 select ARCH_USE_QUEUED_SPINLOCKS 60 select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT 61 select ARCH_WANT_LD_ORPHAN_WARN 62 select ARCH_WANT_OPTIMIZE_VMEMMAP 63 select ARCH_WANTS_NO_INSTR 64 select BUILDTIME_TABLE_SORT 65 select COMMON_CLK 66 select CPU_PM 67 select EFI 68 select GENERIC_CLOCKEVENTS 69 select GENERIC_CMOS_UPDATE 70 select GENERIC_CPU_AUTOPROBE 71 select GENERIC_ENTRY 72 select GENERIC_GETTIMEOFDAY 73 select GENERIC_IOREMAP if !ARCH_IOREMAP 74 select GENERIC_IRQ_MULTI_HANDLER 75 select GENERIC_IRQ_PROBE 76 select GENERIC_IRQ_SHOW 77 select GENERIC_LIB_ASHLDI3 78 select GENERIC_LIB_ASHRDI3 79 select GENERIC_LIB_CMPDI2 80 select GENERIC_LIB_LSHRDI3 81 select GENERIC_LIB_UCMPDI2 82 select GENERIC_LIB_DEVMEM_IS_ALLOWED 83 select GENERIC_PCI_IOMAP 84 select GENERIC_SCHED_CLOCK 85 select GENERIC_SMP_IDLE_THREAD 86 select GENERIC_TIME_VSYSCALL 87 select GENERIC_VDSO_TIME_NS 88 select GPIOLIB 89 select HAS_IOPORT 90 select HAVE_ARCH_AUDITSYSCALL 91 select HAVE_ARCH_JUMP_LABEL 92 select HAVE_ARCH_JUMP_LABEL_RELATIVE 93 select HAVE_ARCH_MMAP_RND_BITS if MMU 94 select HAVE_ARCH_SECCOMP_FILTER 95 select HAVE_ARCH_TRACEHOOK 96 select HAVE_ARCH_TRANSPARENT_HUGEPAGE 97 select HAVE_ASM_MODVERSIONS 98 select HAVE_CONTEXT_TRACKING_USER 99 select HAVE_C_RECORDMCOUNT 100 select HAVE_DEBUG_KMEMLEAK 101 select HAVE_DEBUG_STACKOVERFLOW 102 select HAVE_DMA_CONTIGUOUS 103 select HAVE_DYNAMIC_FTRACE 104 select HAVE_DYNAMIC_FTRACE_WITH_ARGS 105 select HAVE_DYNAMIC_FTRACE_WITH_DIRECT_CALLS 106 select HAVE_DYNAMIC_FTRACE_WITH_REGS 107 select HAVE_EBPF_JIT 108 select HAVE_EFFICIENT_UNALIGNED_ACCESS if !ARCH_STRICT_ALIGN 109 select HAVE_EXIT_THREAD 110 select HAVE_FAST_GUP 111 select HAVE_FTRACE_MCOUNT_RECORD 112 select HAVE_FUNCTION_ARG_ACCESS_API 113 select HAVE_FUNCTION_ERROR_INJECTION 114 select HAVE_FUNCTION_GRAPH_RETVAL if HAVE_FUNCTION_GRAPH_TRACER 115 select HAVE_FUNCTION_GRAPH_TRACER 116 select HAVE_FUNCTION_TRACER 117 select HAVE_GENERIC_VDSO 118 select HAVE_HW_BREAKPOINT if PERF_EVENTS 119 select HAVE_IOREMAP_PROT 120 select HAVE_IRQ_EXIT_ON_IRQ_STACK 121 select HAVE_IRQ_TIME_ACCOUNTING 122 select HAVE_KPROBES 123 select HAVE_KPROBES_ON_FTRACE 124 select HAVE_KRETPROBES 125 select HAVE_MOD_ARCH_SPECIFIC 126 select HAVE_NMI 127 select HAVE_PCI 128 select HAVE_PERF_EVENTS 129 select HAVE_PERF_REGS 130 select HAVE_PERF_USER_STACK_DUMP 131 select HAVE_REGS_AND_STACK_ACCESS_API 132 select HAVE_RETHOOK 133 select HAVE_RSEQ 134 select HAVE_SAMPLE_FTRACE_DIRECT 135 select HAVE_SAMPLE_FTRACE_DIRECT_MULTI 136 select HAVE_SETUP_PER_CPU_AREA if NUMA 137 select HAVE_STACKPROTECTOR 138 select HAVE_SYSCALL_TRACEPOINTS 139 select HAVE_TIF_NOHZ 140 select HAVE_VIRT_CPU_ACCOUNTING_GEN if !SMP 141 select IRQ_FORCED_THREADING 142 select IRQ_LOONGARCH_CPU 143 select LOCK_MM_AND_FIND_VMA 144 select MMU_GATHER_MERGE_VMAS if MMU 145 select MODULES_USE_ELF_RELA if MODULES 146 select NEED_PER_CPU_EMBED_FIRST_CHUNK 147 select NEED_PER_CPU_PAGE_FIRST_CHUNK 148 select OF 149 select OF_EARLY_FLATTREE 150 select PCI 151 select PCI_DOMAINS_GENERIC 152 select PCI_ECAM if ACPI 153 select PCI_LOONGSON 154 select PCI_MSI_ARCH_FALLBACKS 155 select PCI_QUIRKS 156 select PERF_USE_VMALLOC 157 select RTC_LIB 158 select SMP 159 select SPARSE_IRQ 160 select SYSCTL_ARCH_UNALIGN_ALLOW 161 select SYSCTL_ARCH_UNALIGN_NO_WARN 162 select SYSCTL_EXCEPTION_TRACE 163 select SWIOTLB 164 select TRACE_IRQFLAGS_SUPPORT 165 select USE_PERCPU_NUMA_NODE_ID 166 select USER_STACKTRACE_SUPPORT 167 select ZONE_DMA32 168 169config 32BIT 170 bool 171 172config 64BIT 173 def_bool y 174 175config GENERIC_BUG 176 def_bool y 177 depends on BUG 178 179config GENERIC_BUG_RELATIVE_POINTERS 180 def_bool y 181 depends on GENERIC_BUG 182 183config GENERIC_CALIBRATE_DELAY 184 def_bool y 185 186config GENERIC_CSUM 187 def_bool y 188 189config GENERIC_HWEIGHT 190 def_bool y 191 192config L1_CACHE_SHIFT 193 int 194 default "6" 195 196config LOCKDEP_SUPPORT 197 bool 198 default y 199 200config STACKTRACE_SUPPORT 201 bool 202 default y 203 204# MACH_LOONGSON32 and MACH_LOONGSON64 are deliberately carried over from the 205# MIPS Loongson code, to preserve Loongson-specific code paths in drivers that 206# are shared between architectures, and specifically expecting the symbols. 207config MACH_LOONGSON32 208 def_bool 32BIT 209 210config MACH_LOONGSON64 211 def_bool 64BIT 212 213config FIX_EARLYCON_MEM 214 def_bool y 215 216config PAGE_SIZE_4KB 217 bool 218 219config PAGE_SIZE_16KB 220 bool 221 222config PAGE_SIZE_64KB 223 bool 224 225config PGTABLE_2LEVEL 226 bool 227 228config PGTABLE_3LEVEL 229 bool 230 231config PGTABLE_4LEVEL 232 bool 233 234config PGTABLE_LEVELS 235 int 236 default 2 if PGTABLE_2LEVEL 237 default 3 if PGTABLE_3LEVEL 238 default 4 if PGTABLE_4LEVEL 239 240config SCHED_OMIT_FRAME_POINTER 241 bool 242 default y 243 244config AS_HAS_EXPLICIT_RELOCS 245 def_bool $(as-instr,x:pcalau12i \$t0$(comma)%pc_hi20(x)) 246 247config AS_HAS_FCSR_CLASS 248 def_bool $(as-instr,movfcsr2gr \$t0$(comma)\$fcsr0) 249 250config AS_HAS_LSX_EXTENSION 251 def_bool $(as-instr,vld \$vr0$(comma)\$a0$(comma)0) 252 253config AS_HAS_LASX_EXTENSION 254 def_bool $(as-instr,xvld \$xr0$(comma)\$a0$(comma)0) 255 256menu "Kernel type and options" 257 258source "kernel/Kconfig.hz" 259 260choice 261 prompt "Page Table Layout" 262 default 16KB_2LEVEL if 32BIT 263 default 16KB_3LEVEL if 64BIT 264 help 265 Allows choosing the page table layout, which is a combination 266 of page size and page table levels. The size of virtual memory 267 address space are determined by the page table layout. 268 269config 4KB_3LEVEL 270 bool "4KB with 3 levels" 271 select PAGE_SIZE_4KB 272 select PGTABLE_3LEVEL 273 help 274 This option selects 4KB page size with 3 level page tables, which 275 support a maximum of 39 bits of application virtual memory. 276 277config 4KB_4LEVEL 278 bool "4KB with 4 levels" 279 select PAGE_SIZE_4KB 280 select PGTABLE_4LEVEL 281 help 282 This option selects 4KB page size with 4 level page tables, which 283 support a maximum of 48 bits of application virtual memory. 284 285config 16KB_2LEVEL 286 bool "16KB with 2 levels" 287 select PAGE_SIZE_16KB 288 select PGTABLE_2LEVEL 289 help 290 This option selects 16KB page size with 2 level page tables, which 291 support a maximum of 36 bits of application virtual memory. 292 293config 16KB_3LEVEL 294 bool "16KB with 3 levels" 295 select PAGE_SIZE_16KB 296 select PGTABLE_3LEVEL 297 help 298 This option selects 16KB page size with 3 level page tables, which 299 support a maximum of 47 bits of application virtual memory. 300 301config 64KB_2LEVEL 302 bool "64KB with 2 levels" 303 select PAGE_SIZE_64KB 304 select PGTABLE_2LEVEL 305 help 306 This option selects 64KB page size with 2 level page tables, which 307 support a maximum of 42 bits of application virtual memory. 308 309config 64KB_3LEVEL 310 bool "64KB with 3 levels" 311 select PAGE_SIZE_64KB 312 select PGTABLE_3LEVEL 313 help 314 This option selects 64KB page size with 3 level page tables, which 315 support a maximum of 55 bits of application virtual memory. 316 317endchoice 318 319config CMDLINE 320 string "Built-in kernel command line" 321 help 322 For most platforms, the arguments for the kernel's command line 323 are provided at run-time, during boot. However, there are cases 324 where either no arguments are being provided or the provided 325 arguments are insufficient or even invalid. 326 327 When that occurs, it is possible to define a built-in command 328 line here and choose how the kernel should use it later on. 329 330choice 331 prompt "Kernel command line type" 332 default CMDLINE_BOOTLOADER 333 help 334 Choose how the kernel will handle the provided built-in command 335 line. 336 337config CMDLINE_BOOTLOADER 338 bool "Use bootloader kernel arguments if available" 339 help 340 Prefer the command-line passed by the boot loader if available. 341 Use the built-in command line as fallback in case we get nothing 342 during boot. This is the default behaviour. 343 344config CMDLINE_EXTEND 345 bool "Use built-in to extend bootloader kernel arguments" 346 help 347 The command-line arguments provided during boot will be 348 appended to the built-in command line. This is useful in 349 cases where the provided arguments are insufficient and 350 you don't want to or cannot modify them. 351 352config CMDLINE_FORCE 353 bool "Always use the built-in kernel command string" 354 help 355 Always use the built-in command line, even if we get one during 356 boot. This is useful in case you need to override the provided 357 command line on systems where you don't have or want control 358 over it. 359 360endchoice 361 362config DMI 363 bool "Enable DMI scanning" 364 select DMI_SCAN_MACHINE_NON_EFI_FALLBACK 365 default y 366 help 367 This enables SMBIOS/DMI feature for systems, and scanning of 368 DMI to identify machine quirks. 369 370config EFI 371 bool "EFI runtime service support" 372 select UCS2_STRING 373 select EFI_RUNTIME_WRAPPERS 374 help 375 This enables the kernel to use EFI runtime services that are 376 available (such as the EFI variable services). 377 378config EFI_STUB 379 bool "EFI boot stub support" 380 default y 381 depends on EFI 382 select EFI_GENERIC_STUB 383 help 384 This kernel feature allows the kernel to be loaded directly by 385 EFI firmware without the use of a bootloader. 386 387config SCHED_SMT 388 bool "SMT scheduler support" 389 default y 390 help 391 Improves scheduler's performance when there are multiple 392 threads in one physical core. 393 394config SMP 395 bool "Multi-Processing support" 396 help 397 This enables support for systems with more than one CPU. If you have 398 a system with only one CPU, say N. If you have a system with more 399 than one CPU, say Y. 400 401 If you say N here, the kernel will run on uni- and multiprocessor 402 machines, but will use only one CPU of a multiprocessor machine. If 403 you say Y here, the kernel will run on many, but not all, 404 uniprocessor machines. On a uniprocessor machine, the kernel 405 will run faster if you say N here. 406 407 See also the SMP-HOWTO available at <http://www.tldp.org/docs.html#howto>. 408 409 If you don't know what to do here, say N. 410 411config HOTPLUG_CPU 412 bool "Support for hot-pluggable CPUs" 413 depends on SMP 414 select GENERIC_IRQ_MIGRATION 415 help 416 Say Y here to allow turning CPUs off and on. CPUs can be 417 controlled through /sys/devices/system/cpu. 418 (Note: power management support will enable this option 419 automatically on SMP systems. ) 420 Say N if you want to disable CPU hotplug. 421 422config NR_CPUS 423 int "Maximum number of CPUs (2-256)" 424 range 2 256 425 depends on SMP 426 default "64" 427 help 428 This allows you to specify the maximum number of CPUs which this 429 kernel will support. 430 431config NUMA 432 bool "NUMA Support" 433 select SMP 434 select ACPI_NUMA if ACPI 435 help 436 Say Y to compile the kernel with NUMA (Non-Uniform Memory Access) 437 support. This option improves performance on systems with more 438 than one NUMA node; on single node systems it is generally better 439 to leave it disabled. 440 441config NODES_SHIFT 442 int 443 default "6" 444 depends on NUMA 445 446config ARCH_FORCE_MAX_ORDER 447 int "Maximum zone order" 448 default "13" if PAGE_SIZE_64KB 449 default "11" if PAGE_SIZE_16KB 450 default "10" 451 help 452 The kernel memory allocator divides physically contiguous memory 453 blocks into "zones", where each zone is a power of two number of 454 pages. This option selects the largest power of two that the kernel 455 keeps in the memory allocator. If you need to allocate very large 456 blocks of physically contiguous memory, then you may need to 457 increase this value. 458 459 The page size is not necessarily 4KB. Keep this in mind 460 when choosing a value for this option. 461 462config ARCH_IOREMAP 463 bool "Enable LoongArch DMW-based ioremap()" 464 help 465 We use generic TLB-based ioremap() by default since it has page 466 protection support. However, you can enable LoongArch DMW-based 467 ioremap() for better performance. 468 469config ARCH_WRITECOMBINE 470 bool "Enable WriteCombine (WUC) for ioremap()" 471 help 472 LoongArch maintains cache coherency in hardware, but when paired 473 with LS7A chipsets the WUC attribute (Weak-ordered UnCached, which 474 is similar to WriteCombine) is out of the scope of cache coherency 475 machanism for PCIe devices (this is a PCIe protocol violation, which 476 may be fixed in newer chipsets). 477 478 This means WUC can only used for write-only memory regions now, so 479 this option is disabled by default, making WUC silently fallback to 480 SUC for ioremap(). You can enable this option if the kernel is ensured 481 to run on hardware without this bug. 482 483 You can override this setting via writecombine=on/off boot parameter. 484 485config ARCH_STRICT_ALIGN 486 bool "Enable -mstrict-align to prevent unaligned accesses" if EXPERT 487 default y 488 help 489 Not all LoongArch cores support h/w unaligned access, we can use 490 -mstrict-align build parameter to prevent unaligned accesses. 491 492 CPUs with h/w unaligned access support: 493 Loongson-2K2000/2K3000/3A5000/3C5000/3D5000. 494 495 CPUs without h/w unaligned access support: 496 Loongson-2K500/2K1000. 497 498 This option is enabled by default to make the kernel be able to run 499 on all LoongArch systems. But you can disable it manually if you want 500 to run kernel only on systems with h/w unaligned access support in 501 order to optimise for performance. 502 503config CPU_HAS_FPU 504 bool 505 default y 506 507config CPU_HAS_LSX 508 bool "Support for the Loongson SIMD Extension" 509 depends on AS_HAS_LSX_EXTENSION 510 help 511 Loongson SIMD Extension (LSX) introduces 128 bit wide vector registers 512 and a set of SIMD instructions to operate on them. When this option 513 is enabled the kernel will support allocating & switching LSX 514 vector register contexts. If you know that your kernel will only be 515 running on CPUs which do not support LSX or that your userland will 516 not be making use of it then you may wish to say N here to reduce 517 the size & complexity of your kernel. 518 519 If unsure, say Y. 520 521config CPU_HAS_LASX 522 bool "Support for the Loongson Advanced SIMD Extension" 523 depends on CPU_HAS_LSX 524 depends on AS_HAS_LASX_EXTENSION 525 help 526 Loongson Advanced SIMD Extension (LASX) introduces 256 bit wide vector 527 registers and a set of SIMD instructions to operate on them. When this 528 option is enabled the kernel will support allocating & switching LASX 529 vector register contexts. If you know that your kernel will only be 530 running on CPUs which do not support LASX or that your userland will 531 not be making use of it then you may wish to say N here to reduce 532 the size & complexity of your kernel. 533 534 If unsure, say Y. 535 536config CPU_HAS_PREFETCH 537 bool 538 default y 539 540config KEXEC 541 bool "Kexec system call" 542 select KEXEC_CORE 543 help 544 kexec is a system call that implements the ability to shutdown your 545 current kernel, and to start another kernel. It is like a reboot 546 but it is independent of the system firmware. And like a reboot 547 you can start any kernel with it, not just Linux. 548 549 The name comes from the similarity to the exec system call. 550 551config CRASH_DUMP 552 bool "Build kdump crash kernel" 553 select RELOCATABLE 554 help 555 Generate crash dump after being started by kexec. This should 556 be normally only set in special crash dump kernels which are 557 loaded in the main kernel with kexec-tools into a specially 558 reserved region and then later executed after a crash by 559 kdump/kexec. 560 561 For more details see Documentation/admin-guide/kdump/kdump.rst 562 563config RELOCATABLE 564 bool "Relocatable kernel" 565 help 566 This builds the kernel as a Position Independent Executable (PIE), 567 which retains all relocation metadata required, so as to relocate 568 the kernel binary at runtime to a different virtual address from 569 its link address. 570 571config RANDOMIZE_BASE 572 bool "Randomize the address of the kernel (KASLR)" 573 depends on RELOCATABLE 574 help 575 Randomizes the physical and virtual address at which the 576 kernel image is loaded, as a security feature that 577 deters exploit attempts relying on knowledge of the location 578 of kernel internals. 579 580 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET. 581 582 If unsure, say N. 583 584config RANDOMIZE_BASE_MAX_OFFSET 585 hex "Maximum KASLR offset" if EXPERT 586 depends on RANDOMIZE_BASE 587 range 0x0 0x10000000 588 default "0x01000000" 589 help 590 When KASLR is active, this provides the maximum offset that will 591 be applied to the kernel image. It should be set according to the 592 amount of physical RAM available in the target system. 593 594 This is limited by the size of the lower address memory, 256MB. 595 596config SECCOMP 597 bool "Enable seccomp to safely compute untrusted bytecode" 598 depends on PROC_FS 599 default y 600 help 601 This kernel feature is useful for number crunching applications 602 that may need to compute untrusted bytecode during their 603 execution. By using pipes or other transports made available to 604 the process as file descriptors supporting the read/write 605 syscalls, it's possible to isolate those applications in 606 their own address space using seccomp. Once seccomp is 607 enabled via /proc/<pid>/seccomp, it cannot be disabled 608 and the task is only allowed to execute a few safe syscalls 609 defined by each seccomp mode. 610 611 If unsure, say Y. Only embedded should say N here. 612 613endmenu 614 615config ARCH_SELECT_MEMORY_MODEL 616 def_bool y 617 618config ARCH_FLATMEM_ENABLE 619 def_bool y 620 depends on !NUMA 621 622config ARCH_SPARSEMEM_ENABLE 623 def_bool y 624 select SPARSEMEM_VMEMMAP_ENABLE 625 help 626 Say Y to support efficient handling of sparse physical memory, 627 for architectures which are either NUMA (Non-Uniform Memory Access) 628 or have huge holes in the physical address space for other reasons. 629 See <file:Documentation/mm/numa.rst> for more. 630 631config ARCH_ENABLE_THP_MIGRATION 632 def_bool y 633 depends on TRANSPARENT_HUGEPAGE 634 635config ARCH_MEMORY_PROBE 636 def_bool y 637 depends on MEMORY_HOTPLUG 638 639config MMU 640 bool 641 default y 642 643config ARCH_MMAP_RND_BITS_MIN 644 default 12 645 646config ARCH_MMAP_RND_BITS_MAX 647 default 18 648 649config ARCH_SUPPORTS_UPROBES 650 def_bool y 651 652menu "Power management options" 653 654config ARCH_SUSPEND_POSSIBLE 655 def_bool y 656 657config ARCH_HIBERNATION_POSSIBLE 658 def_bool y 659 660source "kernel/power/Kconfig" 661source "drivers/acpi/Kconfig" 662 663endmenu 664 665source "drivers/firmware/Kconfig" 666