1 # SPDX-License-Identifier: GPL-2.0
2 config 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_HOTPLUG_CPU if ACPI_PROCES
9 select ACPI_PPTT if ACPI
10 select ACPI_SYSTEM_POWER_STATES_SUPPOR
11 select ARCH_BINFMT_ELF_STATE
12 select ARCH_DISABLE_KASAN_INLINE
13 select ARCH_ENABLE_MEMORY_HOTPLUG
14 select ARCH_ENABLE_MEMORY_HOTREMOVE
15 select ARCH_ENABLE_THP_MIGRATION if TR
16 select ARCH_HAS_ACPI_TABLE_UPGRADE
17 select ARCH_HAS_CPU_FINALIZE_INIT
18 select ARCH_HAS_CURRENT_STACK_POINTER
19 select ARCH_HAS_DEBUG_VM_PGTABLE
20 select ARCH_HAS_FAST_MULTIPLIER
21 select ARCH_HAS_FORTIFY_SOURCE
22 select ARCH_HAS_KCOV
23 select ARCH_HAS_KERNEL_FPU_SUPPORT if
24 select ARCH_HAS_NMI_SAFE_THIS_CPU_OPS
25 select ARCH_HAS_NON_OVERLAPPING_ADDRES
26 select ARCH_HAS_PTE_DEVMAP
27 select ARCH_HAS_PTE_SPECIAL
28 select ARCH_HAS_SET_MEMORY
29 select ARCH_HAS_SET_DIRECT_MAP
30 select ARCH_HAS_TICK_BROADCAST if GENE
31 select ARCH_INLINE_READ_LOCK if !PREEM
32 select ARCH_INLINE_READ_LOCK_BH if !PR
33 select ARCH_INLINE_READ_LOCK_IRQ if !P
34 select ARCH_INLINE_READ_LOCK_IRQSAVE i
35 select ARCH_INLINE_READ_UNLOCK if !PRE
36 select ARCH_INLINE_READ_UNLOCK_BH if !
37 select ARCH_INLINE_READ_UNLOCK_IRQ if
38 select ARCH_INLINE_READ_UNLOCK_IRQREST
39 select ARCH_INLINE_WRITE_LOCK if !PREE
40 select ARCH_INLINE_WRITE_LOCK_BH if !P
41 select ARCH_INLINE_WRITE_LOCK_IRQ if !
42 select ARCH_INLINE_WRITE_LOCK_IRQSAVE
43 select ARCH_INLINE_WRITE_UNLOCK if !PR
44 select ARCH_INLINE_WRITE_UNLOCK_BH if
45 select ARCH_INLINE_WRITE_UNLOCK_IRQ if
46 select ARCH_INLINE_WRITE_UNLOCK_IRQRES
47 select ARCH_INLINE_SPIN_TRYLOCK if !PR
48 select ARCH_INLINE_SPIN_TRYLOCK_BH if
49 select ARCH_INLINE_SPIN_LOCK if !PREEM
50 select ARCH_INLINE_SPIN_LOCK_BH if !PR
51 select ARCH_INLINE_SPIN_LOCK_IRQ if !P
52 select ARCH_INLINE_SPIN_LOCK_IRQSAVE i
53 select ARCH_INLINE_SPIN_UNLOCK if !PRE
54 select ARCH_INLINE_SPIN_UNLOCK_BH if !
55 select ARCH_INLINE_SPIN_UNLOCK_IRQ if
56 select ARCH_INLINE_SPIN_UNLOCK_IRQREST
57 select ARCH_KEEP_MEMBLOCK
58 select ARCH_MIGHT_HAVE_PC_PARPORT
59 select ARCH_MIGHT_HAVE_PC_SERIO
60 select ARCH_SPARSEMEM_ENABLE
61 select ARCH_STACKWALK
62 select ARCH_SUPPORTS_ACPI
63 select ARCH_SUPPORTS_ATOMIC_RMW
64 select ARCH_SUPPORTS_HUGETLBFS
65 select ARCH_SUPPORTS_INT128 if CC_HAS_
66 select ARCH_SUPPORTS_LTO_CLANG
67 select ARCH_SUPPORTS_LTO_CLANG_THIN
68 select ARCH_SUPPORTS_NUMA_BALANCING
69 select ARCH_USE_BUILTIN_BSWAP
70 select ARCH_USE_CMPXCHG_LOCKREF
71 select ARCH_USE_QUEUED_RWLOCKS
72 select ARCH_USE_QUEUED_SPINLOCKS
73 select ARCH_WANT_DEFAULT_BPF_JIT
74 select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_
75 select ARCH_WANT_LD_ORPHAN_WARN
76 select ARCH_WANT_OPTIMIZE_HUGETLB_VMEM
77 select ARCH_WANTS_NO_INSTR
78 select ARCH_WANTS_THP_SWAP if HAVE_ARC
79 select BUILDTIME_TABLE_SORT
80 select COMMON_CLK
81 select CPU_PM
82 select EFI
83 select GENERIC_CLOCKEVENTS
84 select GENERIC_CMOS_UPDATE
85 select GENERIC_CPU_AUTOPROBE
86 select GENERIC_CPU_DEVICES
87 select GENERIC_CPU_VULNERABILITIES
88 select GENERIC_ENTRY
89 select GENERIC_GETTIMEOFDAY
90 select GENERIC_IOREMAP if !ARCH_IOREMA
91 select GENERIC_IRQ_MATRIX_ALLOCATOR
92 select GENERIC_IRQ_MULTI_HANDLER
93 select GENERIC_IRQ_PROBE
94 select GENERIC_IRQ_SHOW
95 select GENERIC_LIB_ASHLDI3
96 select GENERIC_LIB_ASHRDI3
97 select GENERIC_LIB_CMPDI2
98 select GENERIC_LIB_LSHRDI3
99 select GENERIC_LIB_UCMPDI2
100 select GENERIC_LIB_DEVMEM_IS_ALLOWED
101 select GENERIC_PCI_IOMAP
102 select GENERIC_SCHED_CLOCK
103 select GENERIC_SMP_IDLE_THREAD
104 select GENERIC_TIME_VSYSCALL
105 select GENERIC_VDSO_TIME_NS
106 select GPIOLIB
107 select HAS_IOPORT
108 select HAVE_ARCH_AUDITSYSCALL
109 select HAVE_ARCH_JUMP_LABEL
110 select HAVE_ARCH_JUMP_LABEL_RELATIVE
111 select HAVE_ARCH_KASAN
112 select HAVE_ARCH_KFENCE
113 select HAVE_ARCH_KGDB if PERF_EVENTS
114 select HAVE_ARCH_MMAP_RND_BITS if MMU
115 select HAVE_ARCH_RANDOMIZE_KSTACK_OFFS
116 select HAVE_ARCH_SECCOMP
117 select HAVE_ARCH_SECCOMP_FILTER
118 select HAVE_ARCH_TRACEHOOK
119 select HAVE_ARCH_TRANSPARENT_HUGEPAGE
120 select HAVE_ARCH_USERFAULTFD_MINOR if
121 select HAVE_ASM_MODVERSIONS
122 select HAVE_CONTEXT_TRACKING_USER
123 select HAVE_C_RECORDMCOUNT
124 select HAVE_DEBUG_KMEMLEAK
125 select HAVE_DEBUG_STACKOVERFLOW
126 select HAVE_DMA_CONTIGUOUS
127 select HAVE_DYNAMIC_FTRACE
128 select HAVE_DYNAMIC_FTRACE_WITH_ARGS
129 select HAVE_DYNAMIC_FTRACE_WITH_DIRECT
130 select HAVE_DYNAMIC_FTRACE_WITH_REGS
131 select HAVE_EBPF_JIT
132 select HAVE_EFFICIENT_UNALIGNED_ACCESS
133 select HAVE_EXIT_THREAD
134 select HAVE_GUP_FAST
135 select HAVE_FTRACE_MCOUNT_RECORD
136 select HAVE_FUNCTION_ARG_ACCESS_API
137 select HAVE_FUNCTION_ERROR_INJECTION
138 select HAVE_FUNCTION_GRAPH_RETVAL if H
139 select HAVE_FUNCTION_GRAPH_TRACER
140 select HAVE_FUNCTION_TRACER
141 select HAVE_GCC_PLUGINS
142 select HAVE_GENERIC_VDSO
143 select HAVE_HW_BREAKPOINT if PERF_EVEN
144 select HAVE_IOREMAP_PROT
145 select HAVE_IRQ_EXIT_ON_IRQ_STACK
146 select HAVE_IRQ_TIME_ACCOUNTING
147 select HAVE_KPROBES
148 select HAVE_KPROBES_ON_FTRACE
149 select HAVE_KRETPROBES
150 select HAVE_LIVEPATCH
151 select HAVE_MOD_ARCH_SPECIFIC
152 select HAVE_NMI
153 select HAVE_OBJTOOL if AS_HAS_EXPLICIT
154 select HAVE_PCI
155 select HAVE_PERF_EVENTS
156 select HAVE_PERF_REGS
157 select HAVE_PERF_USER_STACK_DUMP
158 select HAVE_PREEMPT_DYNAMIC_KEY
159 select HAVE_REGS_AND_STACK_ACCESS_API
160 select HAVE_RELIABLE_STACKTRACE if UNW
161 select HAVE_RETHOOK
162 select HAVE_RSEQ
163 select HAVE_RUST
164 select HAVE_SAMPLE_FTRACE_DIRECT
165 select HAVE_SAMPLE_FTRACE_DIRECT_MULTI
166 select HAVE_SETUP_PER_CPU_AREA if NUMA
167 select HAVE_STACK_VALIDATION if HAVE_O
168 select HAVE_STACKPROTECTOR
169 select HAVE_SYSCALL_TRACEPOINTS
170 select HAVE_TIF_NOHZ
171 select HAVE_VIRT_CPU_ACCOUNTING_GEN if
172 select IRQ_FORCED_THREADING
173 select IRQ_LOONGARCH_CPU
174 select LOCK_MM_AND_FIND_VMA
175 select MMU_GATHER_MERGE_VMAS if MMU
176 select MODULES_USE_ELF_RELA if MODULES
177 select NEED_PER_CPU_EMBED_FIRST_CHUNK
178 select NEED_PER_CPU_PAGE_FIRST_CHUNK
179 select OF
180 select OF_EARLY_FLATTREE
181 select PCI
182 select PCI_DOMAINS_GENERIC
183 select PCI_ECAM if ACPI
184 select PCI_LOONGSON
185 select PCI_MSI_ARCH_FALLBACKS
186 select PCI_QUIRKS
187 select PERF_USE_VMALLOC
188 select RTC_LIB
189 select SPARSE_IRQ
190 select SYSCTL_ARCH_UNALIGN_ALLOW
191 select SYSCTL_ARCH_UNALIGN_NO_WARN
192 select SYSCTL_EXCEPTION_TRACE
193 select SWIOTLB
194 select TRACE_IRQFLAGS_SUPPORT
195 select USE_PERCPU_NUMA_NODE_ID
196 select USER_STACKTRACE_SUPPORT
197 select VDSO_GETRANDOM
198 select ZONE_DMA32
199
200 config 32BIT
201 bool
202
203 config 64BIT
204 def_bool y
205
206 config GENERIC_BUG
207 def_bool y
208 depends on BUG
209
210 config GENERIC_BUG_RELATIVE_POINTERS
211 def_bool y
212 depends on GENERIC_BUG
213
214 config GENERIC_CALIBRATE_DELAY
215 def_bool y
216
217 config GENERIC_CSUM
218 def_bool y
219
220 config GENERIC_HWEIGHT
221 def_bool y
222
223 config L1_CACHE_SHIFT
224 int
225 default "6"
226
227 config LOCKDEP_SUPPORT
228 bool
229 default y
230
231 config STACKTRACE_SUPPORT
232 bool
233 default y
234
235 # MACH_LOONGSON32 and MACH_LOONGSON64 are deli
236 # MIPS Loongson code, to preserve Loongson-spe
237 # are shared between architectures, and specif
238 config MACH_LOONGSON32
239 def_bool 32BIT
240
241 config MACH_LOONGSON64
242 def_bool 64BIT
243
244 config FIX_EARLYCON_MEM
245 def_bool y
246
247 config PGTABLE_2LEVEL
248 bool
249
250 config PGTABLE_3LEVEL
251 bool
252
253 config PGTABLE_4LEVEL
254 bool
255
256 config PGTABLE_LEVELS
257 int
258 default 2 if PGTABLE_2LEVEL
259 default 3 if PGTABLE_3LEVEL
260 default 4 if PGTABLE_4LEVEL
261
262 config SCHED_OMIT_FRAME_POINTER
263 bool
264 default y
265
266 config AS_HAS_EXPLICIT_RELOCS
267 def_bool $(as-instr,x:pcalau12i \$t0$(
268
269 config AS_HAS_FCSR_CLASS
270 def_bool $(as-instr,movfcsr2gr \$t0$(c
271
272 config AS_HAS_THIN_ADD_SUB
273 def_bool $(cc-option,-Wa$(comma)-mthin
274
275 config AS_HAS_LSX_EXTENSION
276 def_bool $(as-instr,vld \$vr0$(comma)\
277
278 config AS_HAS_LASX_EXTENSION
279 def_bool $(as-instr,xvld \$xr0$(comma)
280
281 config AS_HAS_LBT_EXTENSION
282 def_bool $(as-instr,movscr2gr \$a0$(co
283
284 config AS_HAS_LVZ_EXTENSION
285 def_bool $(as-instr,hvcl 0)
286
287 menu "Kernel type and options"
288
289 source "kernel/Kconfig.hz"
290
291 choice
292 prompt "Page Table Layout"
293 default 16KB_2LEVEL if 32BIT
294 default 16KB_3LEVEL if 64BIT
295 help
296 Allows choosing the page table layou
297 of page size and page table levels.
298 address space are determined by the
299
300 config 4KB_3LEVEL
301 bool "4KB with 3 levels"
302 select HAVE_PAGE_SIZE_4KB
303 select PGTABLE_3LEVEL
304 help
305 This option selects 4KB page size wi
306 support a maximum of 39 bits of appl
307
308 config 4KB_4LEVEL
309 bool "4KB with 4 levels"
310 select HAVE_PAGE_SIZE_4KB
311 select PGTABLE_4LEVEL
312 help
313 This option selects 4KB page size wi
314 support a maximum of 48 bits of appl
315
316 config 16KB_2LEVEL
317 bool "16KB with 2 levels"
318 select HAVE_PAGE_SIZE_16KB
319 select PGTABLE_2LEVEL
320 help
321 This option selects 16KB page size w
322 support a maximum of 36 bits of appl
323
324 config 16KB_3LEVEL
325 bool "16KB with 3 levels"
326 select HAVE_PAGE_SIZE_16KB
327 select PGTABLE_3LEVEL
328 help
329 This option selects 16KB page size w
330 support a maximum of 47 bits of appl
331
332 config 64KB_2LEVEL
333 bool "64KB with 2 levels"
334 select HAVE_PAGE_SIZE_64KB
335 select PGTABLE_2LEVEL
336 help
337 This option selects 64KB page size w
338 support a maximum of 42 bits of appl
339
340 config 64KB_3LEVEL
341 bool "64KB with 3 levels"
342 select HAVE_PAGE_SIZE_64KB
343 select PGTABLE_3LEVEL
344 help
345 This option selects 64KB page size w
346 support a maximum of 55 bits of appl
347
348 endchoice
349
350 config CMDLINE
351 string "Built-in kernel command line"
352 help
353 For most platforms, the arguments fo
354 are provided at run-time, during boo
355 where either no arguments are being
356 arguments are insufficient or even i
357
358 When that occurs, it is possible to
359 line here and choose how the kernel
360
361 choice
362 prompt "Kernel command line type"
363 default CMDLINE_BOOTLOADER
364 help
365 Choose how the kernel will handle th
366 line.
367
368 config CMDLINE_BOOTLOADER
369 bool "Use bootloader kernel arguments
370 help
371 Prefer the command-line passed by th
372 Use the built-in command line as fal
373 during boot. This is the default beh
374
375 config CMDLINE_EXTEND
376 bool "Use built-in to extend bootloade
377 help
378 The command-line arguments provided
379 appended to the built-in command lin
380 cases where the provided arguments a
381 you don't want to or cannot modify t
382
383 config CMDLINE_FORCE
384 bool "Always use the built-in kernel c
385 help
386 Always use the built-in command line
387 boot. This is useful in case you nee
388 command line on systems where you do
389 over it.
390
391 endchoice
392
393 config BUILTIN_DTB
394 bool "Enable built-in dtb in kernel"
395 depends on OF
396 help
397 Some existing systems do not provide
398 the kernel at boot time. Let's provi
399 kernel, keyed by the dts filename, c
400
401 Built-in DTBs are generic enough and
402
403 config BUILTIN_DTB_NAME
404 string "Source file for built-in dtb"
405 depends on BUILTIN_DTB
406 help
407 Base name (without suffix, relative
408 for the DTS file that will be used t
409 the kernel.
410
411 config DMI
412 bool "Enable DMI scanning"
413 select DMI_SCAN_MACHINE_NON_EFI_FALLBA
414 default y
415 help
416 This enables SMBIOS/DMI feature for
417 DMI to identify machine quirks.
418
419 config EFI
420 bool "EFI runtime service support"
421 select UCS2_STRING
422 select EFI_RUNTIME_WRAPPERS
423 help
424 This enables the kernel to use EFI r
425 available (such as the EFI variable
426
427 config EFI_STUB
428 bool "EFI boot stub support"
429 default y
430 depends on EFI
431 select EFI_GENERIC_STUB
432 help
433 This kernel feature allows the kerne
434 EFI firmware without the use of a bo
435
436 config SCHED_SMT
437 bool "SMT scheduler support"
438 depends on SMP
439 default y
440 help
441 Improves scheduler's performance whe
442 threads in one physical core.
443
444 config SMP
445 bool "Multi-Processing support"
446 help
447 This enables support for systems wit
448 a system with only one CPU, say N. I
449 than one CPU, say Y.
450
451 If you say N here, the kernel will r
452 machines, but will use only one CPU
453 you say Y here, the kernel will run
454 uniprocessor machines. On a uniproce
455 will run faster if you say N here.
456
457 See also the SMP-HOWTO available at
458
459 If you don't know what to do here, s
460
461 config HOTPLUG_CPU
462 bool "Support for hot-pluggable CPUs"
463 depends on SMP
464 select GENERIC_IRQ_MIGRATION
465 help
466 Say Y here to allow turning CPUs off
467 controlled through /sys/devices/syst
468 (Note: power management support will
469 automatically on SMP systems. )
470 Say N if you want to disable CPU hot
471
472 config NR_CPUS
473 int "Maximum number of CPUs (2-256)"
474 range 2 256
475 depends on SMP
476 default "64"
477 help
478 This allows you to specify the maxim
479 kernel will support.
480
481 config NUMA
482 bool "NUMA Support"
483 select SMP
484 help
485 Say Y to compile the kernel with NUM
486 support. This option improves perfo
487 than one NUMA node; on single node s
488 to leave it disabled.
489
490 config NODES_SHIFT
491 int
492 default "6"
493 depends on NUMA
494
495 config ARCH_FORCE_MAX_ORDER
496 int "Maximum zone order"
497 default "13" if PAGE_SIZE_64KB
498 default "11" if PAGE_SIZE_16KB
499 default "10"
500 help
501 The kernel memory allocator divides
502 blocks into "zones", where each zone
503 pages. This option selects the larg
504 keeps in the memory allocator. If y
505 blocks of physically contiguous memo
506 increase this value.
507
508 The page size is not necessarily 4KB
509 when choosing a value for this optio
510
511 config ARCH_IOREMAP
512 bool "Enable LoongArch DMW-based iorem
513 help
514 We use generic TLB-based ioremap() b
515 protection support. However, you can
516 ioremap() for better performance.
517
518 config ARCH_WRITECOMBINE
519 bool "Enable WriteCombine (WUC) for io
520 help
521 LoongArch maintains cache coherency
522 with LS7A chipsets the WUC attribute
523 is similar to WriteCombine) is out o
524 machanism for PCIe devices (this is
525 may be fixed in newer chipsets).
526
527 This means WUC can only used for wri
528 this option is disabled by default,
529 SUC for ioremap(). You can enable th
530 to run on hardware without this bug.
531
532 You can override this setting via wr
533
534 config ARCH_STRICT_ALIGN
535 bool "Enable -mstrict-align to prevent
536 default y
537 help
538 Not all LoongArch cores support h/w
539 -mstrict-align build parameter to pr
540
541 CPUs with h/w unaligned access suppo
542 Loongson-2K2000/2K3000/3A5000/3C5000
543
544 CPUs without h/w unaligned access su
545 Loongson-2K500/2K1000.
546
547 This option is enabled by default to
548 on all LoongArch systems. But you ca
549 to run kernel only on systems with h
550 order to optimise for performance.
551
552 config CPU_HAS_FPU
553 bool
554 default y
555
556 config CPU_HAS_LSX
557 bool "Support for the Loongson SIMD Ex
558 depends on AS_HAS_LSX_EXTENSION
559 help
560 Loongson SIMD Extension (LSX) introd
561 and a set of SIMD instructions to op
562 is enabled the kernel will support a
563 vector register contexts. If you kno
564 running on CPUs which do not support
565 not be making use of it then you may
566 the size & complexity of your kernel
567
568 If unsure, say Y.
569
570 config CPU_HAS_LASX
571 bool "Support for the Loongson Advance
572 depends on CPU_HAS_LSX
573 depends on AS_HAS_LASX_EXTENSION
574 help
575 Loongson Advanced SIMD Extension (LA
576 registers and a set of SIMD instruct
577 option is enabled the kernel will su
578 vector register contexts. If you kno
579 running on CPUs which do not support
580 not be making use of it then you may
581 the size & complexity of your kernel
582
583 If unsure, say Y.
584
585 config CPU_HAS_LBT
586 bool "Support for the Loongson Binary
587 depends on AS_HAS_LBT_EXTENSION
588 help
589 Loongson Binary Translation (LBT) in
590 to SCR3), x86/ARM eflags (eflags) an
591 Enabling this option allows the kern
592 specific to LBT.
593
594 If you want to use this feature, suc
595 Translator (LAT), say Y.
596
597 config CPU_HAS_PREFETCH
598 bool
599 default y
600
601 config ARCH_SUPPORTS_KEXEC
602 def_bool y
603
604 config ARCH_SUPPORTS_CRASH_DUMP
605 def_bool y
606
607 config ARCH_SELECTS_CRASH_DUMP
608 def_bool y
609 depends on CRASH_DUMP
610 select RELOCATABLE
611
612 config ARCH_HAS_GENERIC_CRASHKERNEL_RESERVATIO
613 def_bool CRASH_RESERVE
614
615 config RELOCATABLE
616 bool "Relocatable kernel"
617 select ARCH_HAS_RELR
618 help
619 This builds the kernel as a Position
620 which retains all relocation metadat
621 the kernel binary at runtime to a di
622 its link address.
623
624 config RANDOMIZE_BASE
625 bool "Randomize the address of the ker
626 depends on RELOCATABLE
627 help
628 Randomizes the physical and virtual
629 kernel image is loaded, as a securi
630 deters exploit attempts relying on
631 of kernel internals.
632
633 The kernel will be offset by up to
634
635 If unsure, say N.
636
637 config RANDOMIZE_BASE_MAX_OFFSET
638 hex "Maximum KASLR offset" if EXPERT
639 depends on RANDOMIZE_BASE
640 range 0x0 0x10000000
641 default "0x01000000"
642 help
643 When KASLR is active, this provides
644 be applied to the kernel image. It s
645 amount of physical RAM available in
646
647 This is limited by the size of the l
648
649 source "kernel/livepatch/Kconfig"
650
651 config PARAVIRT
652 bool "Enable paravirtualization code"
653 depends on AS_HAS_LVZ_EXTENSION
654 help
655 This changes the kernel so it can mo
656 under a hypervisor, potentially impr
657 over full virtualization. However,
658 the kernel is theoretically slower a
659
660 config PARAVIRT_TIME_ACCOUNTING
661 bool "Paravirtual steal time accountin
662 depends on PARAVIRT
663 help
664 Select this option to enable fine gr
665 accounting. Time spent executing oth
666 the current vCPU is discounted from
667 that, there can be a small performan
668
669 If in doubt, say N here.
670
671 endmenu
672
673 config ARCH_SELECT_MEMORY_MODEL
674 def_bool y
675
676 config ARCH_FLATMEM_ENABLE
677 def_bool y
678 depends on !NUMA
679
680 config ARCH_SPARSEMEM_ENABLE
681 def_bool y
682 select SPARSEMEM_VMEMMAP_ENABLE
683 help
684 Say Y to support efficient handling
685 for architectures which are either N
686 or have huge holes in the physical a
687 See <file:Documentation/mm/numa.rst>
688
689 config ARCH_MEMORY_PROBE
690 def_bool y
691 depends on MEMORY_HOTPLUG
692
693 config MMU
694 bool
695 default y
696
697 config ARCH_MMAP_RND_BITS_MIN
698 default 12
699
700 config ARCH_MMAP_RND_BITS_MAX
701 default 18
702
703 config ARCH_SUPPORTS_UPROBES
704 def_bool y
705
706 config KASAN_SHADOW_OFFSET
707 hex
708 default 0x0
709 depends on KASAN
710
711 menu "Power management options"
712
713 config ARCH_SUSPEND_POSSIBLE
714 def_bool y
715
716 config ARCH_HIBERNATION_POSSIBLE
717 def_bool y
718
719 source "kernel/power/Kconfig"
720 source "drivers/acpi/Kconfig"
721 source "drivers/cpufreq/Kconfig"
722
723 endmenu
724
725 source "arch/loongarch/kvm/Kconfig"
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