1 # SPDX-License-Identifier: GPL-2.0 1 # SPDX-License-Identifier: GPL-2.0
2 config MMU !! 2 config ALPHA
3 def_bool y !! 3 bool
4 !! 4 default y
5 config CPU_BIG_ENDIAN <<
6 def_bool y <<
7 <<
8 config LOCKDEP_SUPPORT <<
9 def_bool y <<
10 <<
11 config STACKTRACE_SUPPORT <<
12 def_bool y <<
13 <<
14 config ARCH_HAS_ILOG2_U32 <<
15 def_bool n <<
16 <<
17 config ARCH_HAS_ILOG2_U64 <<
18 def_bool n <<
19 <<
20 config ARCH_PROC_KCORE_TEXT <<
21 def_bool y <<
22 <<
23 config GENERIC_HWEIGHT <<
24 def_bool !HAVE_MARCH_Z196_FEATURES <<
25 <<
26 config GENERIC_BUG <<
27 def_bool y if BUG <<
28 <<
29 config GENERIC_BUG_RELATIVE_POINTERS <<
30 def_bool y <<
31 <<
32 config GENERIC_LOCKBREAK <<
33 def_bool y if PREEMPTION <<
34 <<
35 config PGSTE <<
36 def_bool y if KVM <<
37 <<
38 config AUDIT_ARCH <<
39 def_bool y <<
40 <<
41 config NO_IOPORT_MAP <<
42 def_bool y <<
43 <<
44 config PCI_QUIRKS <<
45 def_bool n <<
46 <<
47 config ARCH_SUPPORTS_UPROBES <<
48 def_bool y <<
49 <<
50 config KASAN_SHADOW_OFFSET <<
51 hex <<
52 depends on KASAN <<
53 default 0x1C000000000000 <<
54 <<
55 config S390 <<
56 def_bool y <<
57 # <<
58 # Note: keep this list sorted alphabet <<
59 # <<
60 imply IMA_SECURE_AND_OR_TRUSTED_BOOT <<
61 select ALTERNATE_USER_ADDRESS_SPACE <<
62 select ARCH_32BIT_USTAT_F_TINODE 5 select ARCH_32BIT_USTAT_F_TINODE
63 select ARCH_BINFMT_ELF_STATE <<
64 select ARCH_CORRECT_STACKTRACE_ON_KRET <<
65 select ARCH_ENABLE_MEMORY_HOTPLUG if S <<
66 select ARCH_ENABLE_MEMORY_HOTREMOVE <<
67 select ARCH_ENABLE_SPLIT_PMD_PTLOCK if <<
68 select ARCH_HAS_CURRENT_STACK_POINTER 6 select ARCH_HAS_CURRENT_STACK_POINTER
69 select ARCH_HAS_DEBUG_VIRTUAL <<
70 select ARCH_HAS_DEBUG_VM_PGTABLE <<
71 select ARCH_HAS_DEBUG_WX <<
72 select ARCH_HAS_DEVMEM_IS_ALLOWED <<
73 select ARCH_HAS_DMA_OPS if PCI 7 select ARCH_HAS_DMA_OPS if PCI
74 select ARCH_HAS_ELF_RANDOMIZE !! 8 select ARCH_MIGHT_HAVE_PC_PARPORT
75 select ARCH_HAS_FORCE_DMA_UNENCRYPTED !! 9 select ARCH_MIGHT_HAVE_PC_SERIO
76 select ARCH_HAS_FORTIFY_SOURCE !! 10 select ARCH_NO_PREEMPT
77 select ARCH_HAS_GCOV_PROFILE_ALL !! 11 select ARCH_NO_SG_CHAIN
78 select ARCH_HAS_GIGANTIC_PAGE <<
79 select ARCH_HAS_KCOV <<
80 select ARCH_HAS_MEMBARRIER_SYNC_CORE <<
81 select ARCH_HAS_MEM_ENCRYPT <<
82 select ARCH_HAS_NMI_SAFE_THIS_CPU_OPS <<
83 select ARCH_HAS_PTE_SPECIAL <<
84 select ARCH_HAS_SCALED_CPUTIME <<
85 select ARCH_HAS_SET_DIRECT_MAP <<
86 select ARCH_HAS_SET_MEMORY <<
87 select ARCH_HAS_STRICT_KERNEL_RWX <<
88 select ARCH_HAS_STRICT_MODULE_RWX <<
89 select ARCH_HAS_SYSCALL_WRAPPER <<
90 select ARCH_HAS_UBSAN <<
91 select ARCH_HAS_VDSO_DATA <<
92 select ARCH_HAVE_NMI_SAFE_CMPXCHG <<
93 select ARCH_INLINE_READ_LOCK <<
94 select ARCH_INLINE_READ_LOCK_BH <<
95 select ARCH_INLINE_READ_LOCK_IRQ <<
96 select ARCH_INLINE_READ_LOCK_IRQSAVE <<
97 select ARCH_INLINE_READ_TRYLOCK <<
98 select ARCH_INLINE_READ_UNLOCK <<
99 select ARCH_INLINE_READ_UNLOCK_BH <<
100 select ARCH_INLINE_READ_UNLOCK_IRQ <<
101 select ARCH_INLINE_READ_UNLOCK_IRQREST <<
102 select ARCH_INLINE_SPIN_LOCK <<
103 select ARCH_INLINE_SPIN_LOCK_BH <<
104 select ARCH_INLINE_SPIN_LOCK_IRQ <<
105 select ARCH_INLINE_SPIN_LOCK_IRQSAVE <<
106 select ARCH_INLINE_SPIN_TRYLOCK <<
107 select ARCH_INLINE_SPIN_TRYLOCK_BH <<
108 select ARCH_INLINE_SPIN_UNLOCK <<
109 select ARCH_INLINE_SPIN_UNLOCK_BH <<
110 select ARCH_INLINE_SPIN_UNLOCK_IRQ <<
111 select ARCH_INLINE_SPIN_UNLOCK_IRQREST <<
112 select ARCH_INLINE_WRITE_LOCK <<
113 select ARCH_INLINE_WRITE_LOCK_BH <<
114 select ARCH_INLINE_WRITE_LOCK_IRQ <<
115 select ARCH_INLINE_WRITE_LOCK_IRQSAVE <<
116 select ARCH_INLINE_WRITE_TRYLOCK <<
117 select ARCH_INLINE_WRITE_UNLOCK <<
118 select ARCH_INLINE_WRITE_UNLOCK_BH <<
119 select ARCH_INLINE_WRITE_UNLOCK_IRQ <<
120 select ARCH_INLINE_WRITE_UNLOCK_IRQRES <<
121 select ARCH_MHP_MEMMAP_ON_MEMORY_ENABL <<
122 select ARCH_STACKWALK <<
123 select ARCH_SUPPORTS_ATOMIC_RMW <<
124 select ARCH_SUPPORTS_DEBUG_PAGEALLOC <<
125 select ARCH_SUPPORTS_HUGETLBFS <<
126 select ARCH_SUPPORTS_INT128 if CC_HAS_ <<
127 select ARCH_SUPPORTS_NUMA_BALANCING <<
128 select ARCH_SUPPORTS_PER_VMA_LOCK <<
129 select ARCH_USE_BUILTIN_BSWAP <<
130 select ARCH_USE_CMPXCHG_LOCKREF 12 select ARCH_USE_CMPXCHG_LOCKREF
131 select ARCH_USE_SYM_ANNOTATIONS !! 13 select FORCE_PCI
132 select ARCH_WANTS_NO_INSTR !! 14 select PCI_DOMAINS if PCI
133 select ARCH_WANT_DEFAULT_BPF_JIT !! 15 select PCI_SYSCALL if PCI
>> 16 select HAVE_ASM_MODVERSIONS
>> 17 select HAVE_PAGE_SIZE_8KB
>> 18 select HAVE_PCSPKR_PLATFORM
>> 19 select HAVE_PERF_EVENTS
>> 20 select NEED_DMA_MAP_STATE
>> 21 select NEED_SG_DMA_LENGTH
>> 22 select GENERIC_IRQ_PROBE
>> 23 select GENERIC_PCI_IOMAP
>> 24 select AUTO_IRQ_AFFINITY if SMP
>> 25 select GENERIC_IRQ_SHOW
134 select ARCH_WANT_IPC_PARSE_VERSION 26 select ARCH_WANT_IPC_PARSE_VERSION
135 select ARCH_WANT_KERNEL_PMD_MKWRITE !! 27 select ARCH_HAVE_NMI_SAFE_CMPXCHG
136 select ARCH_WANT_LD_ORPHAN_WARN !! 28 select AUDIT_ARCH
137 select ARCH_WANT_OPTIMIZE_HUGETLB_VMEM <<
138 select BUILDTIME_TABLE_SORT <<
139 select CLONE_BACKWARDS2 <<
140 select DCACHE_WORD_ACCESS if !KMSAN <<
141 select DYNAMIC_FTRACE if FUNCTION_TRAC <<
142 select FUNCTION_ALIGNMENT_8B if CC_IS_ <<
143 select FUNCTION_ALIGNMENT_16B if !CC_I <<
144 select GENERIC_ALLOCATOR <<
145 select GENERIC_CPU_DEVICES <<
146 select GENERIC_CPU_AUTOPROBE <<
147 select GENERIC_CPU_VULNERABILITIES 29 select GENERIC_CPU_VULNERABILITIES
148 select GENERIC_ENTRY <<
149 select GENERIC_GETTIMEOFDAY <<
150 select GENERIC_PTDUMP <<
151 select GENERIC_SMP_IDLE_THREAD 30 select GENERIC_SMP_IDLE_THREAD
152 select GENERIC_TIME_VSYSCALL !! 31 select HAS_IOPORT
153 select GENERIC_VDSO_TIME_NS <<
154 select GENERIC_IOREMAP if PCI <<
155 select HAVE_ALIGNED_STRUCT_PAGE <<
156 select HAVE_ARCH_AUDITSYSCALL 32 select HAVE_ARCH_AUDITSYSCALL
157 select HAVE_ARCH_JUMP_LABEL <<
158 select HAVE_ARCH_JUMP_LABEL_RELATIVE <<
159 select HAVE_ARCH_KASAN <<
160 select HAVE_ARCH_KASAN_VMALLOC <<
161 select HAVE_ARCH_KCSAN <<
162 select HAVE_ARCH_KMSAN <<
163 select HAVE_ARCH_KFENCE <<
164 select HAVE_ARCH_RANDOMIZE_KSTACK_OFFS <<
165 select HAVE_ARCH_SECCOMP_FILTER <<
166 select HAVE_ARCH_SOFT_DIRTY <<
167 select HAVE_ARCH_STACKLEAK <<
168 select HAVE_ARCH_TRACEHOOK <<
169 select HAVE_ARCH_TRANSPARENT_HUGEPAGE <<
170 select HAVE_ARCH_VMAP_STACK <<
171 select HAVE_ASM_MODVERSIONS <<
172 select HAVE_CMPXCHG_DOUBLE <<
173 select HAVE_CMPXCHG_LOCAL <<
174 select HAVE_DEBUG_KMEMLEAK <<
175 select HAVE_DMA_CONTIGUOUS <<
176 select HAVE_DYNAMIC_FTRACE <<
177 select HAVE_DYNAMIC_FTRACE_WITH_ARGS <<
178 select HAVE_DYNAMIC_FTRACE_WITH_DIRECT <<
179 select HAVE_DYNAMIC_FTRACE_WITH_REGS <<
180 select HAVE_EBPF_JIT if HAVE_MARCH_Z19 <<
181 select HAVE_EFFICIENT_UNALIGNED_ACCESS <<
182 select HAVE_GUP_FAST <<
183 select HAVE_FENTRY <<
184 select HAVE_FTRACE_MCOUNT_RECORD <<
185 select HAVE_FUNCTION_ARG_ACCESS_API <<
186 select HAVE_FUNCTION_ERROR_INJECTION <<
187 select HAVE_FUNCTION_GRAPH_RETVAL <<
188 select HAVE_FUNCTION_GRAPH_TRACER <<
189 select HAVE_FUNCTION_TRACER <<
190 select HAVE_GCC_PLUGINS <<
191 select HAVE_GENERIC_VDSO <<
192 select HAVE_IOREMAP_PROT if PCI <<
193 select HAVE_KERNEL_BZIP2 <<
194 select HAVE_KERNEL_GZIP <<
195 select HAVE_KERNEL_LZ4 <<
196 select HAVE_KERNEL_LZMA <<
197 select HAVE_KERNEL_LZO <<
198 select HAVE_KERNEL_UNCOMPRESSED <<
199 select HAVE_KERNEL_XZ <<
200 select HAVE_KERNEL_ZSTD <<
201 select HAVE_KPROBES <<
202 select HAVE_KPROBES_ON_FTRACE <<
203 select HAVE_KRETPROBES <<
204 select HAVE_LIVEPATCH <<
205 select HAVE_MEMBLOCK_PHYS_MAP <<
206 select HAVE_MOD_ARCH_SPECIFIC 33 select HAVE_MOD_ARCH_SPECIFIC
207 select HAVE_NMI !! 34 select LOCK_MM_AND_FIND_VMA
208 select HAVE_NOP_MCOUNT <<
209 select HAVE_PAGE_SIZE_4KB <<
210 select HAVE_PCI <<
211 select HAVE_PERF_EVENTS <<
212 select HAVE_PERF_REGS <<
213 select HAVE_PERF_USER_STACK_DUMP <<
214 select HAVE_REGS_AND_STACK_ACCESS_API <<
215 select HAVE_RELIABLE_STACKTRACE <<
216 select HAVE_RETHOOK <<
217 select HAVE_RSEQ <<
218 select HAVE_SAMPLE_FTRACE_DIRECT <<
219 select HAVE_SAMPLE_FTRACE_DIRECT_MULTI <<
220 select HAVE_SETUP_PER_CPU_AREA <<
221 select HAVE_SOFTIRQ_ON_OWN_STACK <<
222 select HAVE_SYSCALL_TRACEPOINTS <<
223 select HAVE_VIRT_CPU_ACCOUNTING <<
224 select HAVE_VIRT_CPU_ACCOUNTING_IDLE <<
225 select IOMMU_HELPER if PCI <<
226 select IOMMU_SUPPORT if PCI <<
227 select MMU_GATHER_MERGE_VMAS <<
228 select MMU_GATHER_NO_GATHER <<
229 select MMU_GATHER_RCU_TABLE_FREE <<
230 select MODULES_USE_ELF_RELA 35 select MODULES_USE_ELF_RELA
231 select NEED_DMA_MAP_STATE if PCI !! 36 select ODD_RT_SIGACTION
232 select NEED_PER_CPU_EMBED_FIRST_CHUNK !! 37 select OLD_SIGSUSPEND
233 select NEED_SG_DMA_LENGTH if PCI !! 38 select CPU_NO_EFFICIENT_FFS if !ALPHA_EV67
234 select OLD_SIGACTION !! 39 select MMU_GATHER_NO_RANGE
235 select OLD_SIGSUSPEND3 !! 40 select SPARSEMEM_EXTREME if SPARSEMEM
236 select PCI_DOMAINS if PCI <<
237 select PCI_MSI if PCI <<
238 select PCI_MSI_ARCH_FALLBACKS if PCI <<
239 select SPARSE_IRQ <<
240 select SWIOTLB <<
241 select SYSCTL_EXCEPTION_TRACE <<
242 select THREAD_INFO_IN_TASK <<
243 select TRACE_IRQFLAGS_SUPPORT <<
244 select TTY <<
245 select USER_STACKTRACE_SUPPORT <<
246 select VDSO_GETRANDOM <<
247 select VIRT_CPU_ACCOUNTING <<
248 select ZONE_DMA 41 select ZONE_DMA
249 # Note: keep the above list sorted alp <<
250 <<
251 config SCHED_OMIT_FRAME_POINTER <<
252 def_bool y <<
253 <<
254 config PGTABLE_LEVELS <<
255 int <<
256 default 5 <<
257 <<
258 source "kernel/livepatch/Kconfig" <<
259 <<
260 config ARCH_SUPPORTS_KEXEC <<
261 def_bool y <<
262 <<
263 config ARCH_SUPPORTS_KEXEC_FILE <<
264 def_bool y <<
265 <<
266 config ARCH_SUPPORTS_KEXEC_SIG <<
267 def_bool MODULE_SIG_FORMAT <<
268 <<
269 config ARCH_SUPPORTS_KEXEC_PURGATORY <<
270 def_bool y <<
271 <<
272 config ARCH_SUPPORTS_CRASH_DUMP <<
273 def_bool y <<
274 help 42 help
275 Refer to <file:Documentation/arch/s3 !! 43 The Alpha is a 64-bit general-purpose processor designed and
276 This option also enables s390 zfcpdu !! 44 marketed by the Digital Equipment Corporation of blessed memory,
277 See also <file:Documentation/arch/s3 !! 45 now Hewlett-Packard. The Alpha Linux project has a home page at
278 !! 46 <http://www.alphalinux.org/>.
279 menu "Processor type and features" <<
280 <<
281 config HAVE_MARCH_Z10_FEATURES <<
282 def_bool n <<
283 <<
284 config HAVE_MARCH_Z196_FEATURES <<
285 def_bool n <<
286 select HAVE_MARCH_Z10_FEATURES <<
287 <<
288 config HAVE_MARCH_ZEC12_FEATURES <<
289 def_bool n <<
290 select HAVE_MARCH_Z196_FEATURES <<
291 <<
292 config HAVE_MARCH_Z13_FEATURES <<
293 def_bool n <<
294 select HAVE_MARCH_ZEC12_FEATURES <<
295 <<
296 config HAVE_MARCH_Z14_FEATURES <<
297 def_bool n <<
298 select HAVE_MARCH_Z13_FEATURES <<
299 <<
300 config HAVE_MARCH_Z15_FEATURES <<
301 def_bool n <<
302 select HAVE_MARCH_Z14_FEATURES <<
303 <<
304 config HAVE_MARCH_Z16_FEATURES <<
305 def_bool n <<
306 select HAVE_MARCH_Z15_FEATURES <<
307 47
308 choice !! 48 config 64BIT
309 prompt "Processor type" !! 49 def_bool y
310 default MARCH_Z196 <<
311 <<
312 config MARCH_Z10 <<
313 bool "IBM System z10" <<
314 select HAVE_MARCH_Z10_FEATURES <<
315 depends on $(cc-option,-march=z10) <<
316 help <<
317 Select this to enable optimizations <<
318 series). This is the oldest machine <<
319 <<
320 config MARCH_Z196 <<
321 bool "IBM zEnterprise 114 and 196" <<
322 select HAVE_MARCH_Z196_FEATURES <<
323 depends on $(cc-option,-march=z196) <<
324 help <<
325 Select this to enable optimizations <<
326 (2818 and 2817 series). The kernel w <<
327 not work on older machines. <<
328 <<
329 config MARCH_ZEC12 <<
330 bool "IBM zBC12 and zEC12" <<
331 select HAVE_MARCH_ZEC12_FEATURES <<
332 depends on $(cc-option,-march=zEC12) <<
333 help <<
334 Select this to enable optimizations <<
335 2827 series). The kernel will be sli <<
336 older machines. <<
337 <<
338 config MARCH_Z13 <<
339 bool "IBM z13s and z13" <<
340 select HAVE_MARCH_Z13_FEATURES <<
341 depends on $(cc-option,-march=z13) <<
342 help <<
343 Select this to enable optimizations <<
344 2964 series). The kernel will be sli <<
345 older machines. <<
346 <<
347 config MARCH_Z14 <<
348 bool "IBM z14 ZR1 and z14" <<
349 select HAVE_MARCH_Z14_FEATURES <<
350 depends on $(cc-option,-march=z14) <<
351 help <<
352 Select this to enable optimizations <<
353 and 3906 series). The kernel will be <<
354 work on older machines. <<
355 <<
356 config MARCH_Z15 <<
357 bool "IBM z15" <<
358 select HAVE_MARCH_Z15_FEATURES <<
359 depends on $(cc-option,-march=z15) <<
360 help <<
361 Select this to enable optimizations <<
362 and 8561 series). The kernel will be <<
363 work on older machines. <<
364 <<
365 config MARCH_Z16 <<
366 bool "IBM z16" <<
367 select HAVE_MARCH_Z16_FEATURES <<
368 depends on $(cc-option,-march=z16) <<
369 help <<
370 Select this to enable optimizations <<
371 3932 series). <<
372 50
373 endchoice !! 51 config MMU
>> 52 bool
>> 53 default y
374 54
375 config MARCH_Z10_TUNE !! 55 config ARCH_HAS_ILOG2_U32
376 def_bool TUNE_Z10 || MARCH_Z10 && TUNE !! 56 bool
>> 57 default n
377 58
378 config MARCH_Z196_TUNE !! 59 config ARCH_HAS_ILOG2_U64
379 def_bool TUNE_Z196 || MARCH_Z196 && TU !! 60 bool
>> 61 default n
380 62
381 config MARCH_ZEC12_TUNE !! 63 config GENERIC_CALIBRATE_DELAY
382 def_bool TUNE_ZEC12 || MARCH_ZEC12 && !! 64 bool
>> 65 default y
383 66
384 config MARCH_Z13_TUNE !! 67 config GENERIC_ISA_DMA
385 def_bool TUNE_Z13 || MARCH_Z13 && TUNE !! 68 bool
>> 69 default y
386 70
387 config MARCH_Z14_TUNE !! 71 config PGTABLE_LEVELS
388 def_bool TUNE_Z14 || MARCH_Z14 && TUNE !! 72 int
>> 73 default 3
389 74
390 config MARCH_Z15_TUNE !! 75 config AUDIT_ARCH
391 def_bool TUNE_Z15 || MARCH_Z15 && TUNE !! 76 bool
392 77
393 config MARCH_Z16_TUNE !! 78 menu "System setup"
394 def_bool TUNE_Z16 || MARCH_Z16 && TUNE <<
395 79
396 choice 80 choice
397 prompt "Tune code generation" !! 81 prompt "Alpha system type"
398 default TUNE_DEFAULT !! 82 default ALPHA_GENERIC
399 help 83 help
400 Cause the compiler to tune (-mtune) !! 84 This is the system type of your hardware. A "generic" kernel will
401 This will make the code run faster o !! 85 run on any supported Alpha system. However, if you configure a
402 somewhat slower on other machines. !! 86 kernel for your specific system, it will be faster and smaller.
403 This option only changes how the com <<
404 selection of instructions itself, so <<
405 all other machines. <<
406 <<
407 config TUNE_DEFAULT <<
408 bool "Default" <<
409 help <<
410 Tune the generated code for the targ <<
411 will be compiled. <<
412 <<
413 config TUNE_Z10 <<
414 bool "IBM System z10" <<
415 <<
416 config TUNE_Z196 <<
417 bool "IBM zEnterprise 114 and 196" <<
418 depends on $(cc-option,-mtune=z196) <<
419 <<
420 config TUNE_ZEC12 <<
421 bool "IBM zBC12 and zEC12" <<
422 depends on $(cc-option,-mtune=zEC12) <<
423 <<
424 config TUNE_Z13 <<
425 bool "IBM z13s and z13" <<
426 depends on $(cc-option,-mtune=z13) <<
427 <<
428 config TUNE_Z14 <<
429 bool "IBM z14 ZR1 and z14" <<
430 depends on $(cc-option,-mtune=z14) <<
431 <<
432 config TUNE_Z15 <<
433 bool "IBM z15" <<
434 depends on $(cc-option,-mtune=z15) <<
435 <<
436 config TUNE_Z16 <<
437 bool "IBM z16" <<
438 depends on $(cc-option,-mtune=z16) <<
439 <<
440 endchoice <<
441 <<
442 config 64BIT <<
443 def_bool y <<
444 <<
445 config COMMAND_LINE_SIZE <<
446 int "Maximum size of kernel command li <<
447 default 4096 <<
448 range 896 1048576 <<
449 help <<
450 This allows you to specify the maxim <<
451 line. <<
452 <<
453 config COMPAT <<
454 def_bool n <<
455 prompt "Kernel support for 31 bit emul <<
456 select ARCH_WANT_OLD_COMPAT_IPC <<
457 select COMPAT_OLD_SIGACTION <<
458 select HAVE_UID16 <<
459 depends on MULTIUSER <<
460 depends on !CC_IS_CLANG && !LD_IS_LLD <<
461 help <<
462 Select this option if you want to en <<
463 handle system-calls from ELF binarie <<
464 (and some other stuff like libraries <<
465 executing 31 bit applications. <<
466 87
467 If unsure say N. !! 88 To find out what type of Alpha system you have, you may want to
468 !! 89 check out the Linux/Alpha FAQ, accessible on the WWW from
469 config SMP !! 90 <http://www.alphalinux.org/>. In summary:
470 def_bool y <<
471 <<
472 config NR_CPUS <<
473 int "Maximum number of CPUs (2-512)" <<
474 range 2 512 <<
475 default "64" <<
476 help <<
477 This allows you to specify the maxim <<
478 kernel will support. The maximum sup <<
479 minimum value which makes sense is 2 <<
480 91
481 This is purely to save memory - each !! 92 Alcor/Alpha-XLT AS 600, AS 500, XL-300, XL-366
482 approximately sixteen kilobytes to t !! 93 DP264 DP264 / DS20 / ES40 / DS10 / DS10L
>> 94 LX164 AlphaPC164-LX
>> 95 Miata Personal Workstation 433/500/600 a/au
>> 96 Marvel AlphaServer ES47 / ES80 / GS1280
>> 97 Mikasa AS 1000
>> 98 Noritake AS 1000A, AS 600A, AS 800
>> 99 PC164 AlphaPC164
>> 100 Rawhide AS 1200, AS 4000, AS 4100
>> 101 Ruffian RPX164-2, AlphaPC164-UX, AlphaPC164-BX
>> 102 SX164 AlphaPC164-SX
>> 103 Sable AS 2000, AS 2100
>> 104 Shark DS 20L
>> 105 Takara Takara (OEM)
>> 106 Titan AlphaServer ES45 / DS25 / DS15
>> 107 Wildfire AlphaServer GS 40/80/160/320
483 108
484 config HOTPLUG_CPU !! 109 If you don't know what to do, choose "generic".
485 def_bool y <<
486 110
487 config NUMA !! 111 config ALPHA_GENERIC
488 bool "NUMA support" !! 112 bool "Generic"
489 depends on SCHED_TOPOLOGY !! 113 depends on TTY
490 default n !! 114 select HAVE_EISA
491 help 115 help
492 Enable NUMA support !! 116 A generic kernel will run on all supported Alpha hardware.
493 <<
494 This option adds NUMA support to the <<
495 <<
496 config NODES_SHIFT <<
497 int <<
498 depends on NUMA <<
499 default "1" <<
500 <<
501 config SCHED_SMT <<
502 def_bool n <<
503 117
504 config SCHED_MC !! 118 config ALPHA_ALCOR
505 def_bool n !! 119 bool "Alcor/Alpha-XLT"
506 !! 120 select HAVE_EISA
507 config SCHED_TOPOLOGY <<
508 def_bool y <<
509 prompt "Topology scheduler support" <<
510 select SCHED_SMT <<
511 select SCHED_MC <<
512 help <<
513 Topology scheduler support improves <<
514 making when dealing with machines th <<
515 multiple cores or multiple books. <<
516 <<
517 config SCHED_TOPOLOGY_VERTICAL <<
518 def_bool y <<
519 bool "Use vertical CPU polarization by <<
520 depends on SCHED_TOPOLOGY <<
521 help 121 help
522 Use vertical CPU polarization by def !! 122 For systems using the Digital ALCOR chipset: 5 chips (4, 64-bit data
523 The default CPU polarization is hori !! 123 slices (Data Switch, DSW) - 208-pin PQFP and 1 control (Control, I/O
>> 124 Address, CIA) - a 383 pin plastic PGA). It provides a DRAM
>> 125 controller (256-bit memory bus) and a PCI interface. It also does
>> 126 all the work required to support an external Bcache and to maintain
>> 127 memory coherence when a PCI device DMAs into (or out of) memory.
524 128
525 config HIPERDISPATCH_ON !! 129 config ALPHA_DP264
526 def_bool y !! 130 bool "DP264"
527 bool "Use hiperdispatch on vertical po !! 131 help
528 depends on SCHED_TOPOLOGY !! 132 Various 21264 systems with the tsunami core logic chipset.
529 depends on PROC_SYSCTL !! 133 API Networks: 264DP, UP2000(+), CS20;
530 help !! 134 Compaq: DS10(E,L), XP900, XP1000, DS20(E), ES40.
531 Hiperdispatch aims to improve the CP <<
532 making when using vertical polarizat <<
533 capacities dynamically. Set this opt <<
534 on vertical polarization by default. <<
535 by sysctl's s390.hiperdispatch attri <<
536 <<
537 source "kernel/Kconfig.hz" <<
538 <<
539 config CERT_STORE <<
540 bool "Get user certificates via DIAG32 <<
541 depends on KEYS <<
542 select CRYPTO_LIB_SHA256 <<
543 help <<
544 Enable this option if you want to ac <<
545 certificates via DIAG 0x320. <<
546 <<
547 These certificates will be made avai <<
548 'cert_store'. <<
549 <<
550 config KERNEL_NOBP <<
551 def_bool n <<
552 prompt "Enable modified branch predict <<
553 help <<
554 If this option is selected the kerne <<
555 branch prediction mode if the firmwa <<
556 The modified branch prediction mode <<
557 regard to speculative execution. <<
558 <<
559 With the option enabled the kernel p <<
560 can be used to run the kernel in the <<
561 <<
562 With the option disabled the modifie <<
563 enabled with the "nobp=1" kernel par <<
564 135
565 If unsure, say N. !! 136 config ALPHA_EIGER
>> 137 bool "Eiger"
>> 138 help
>> 139 Apparently an obscure OEM single-board computer based on the
>> 140 Typhoon/Tsunami chipset family. Information on it is scanty.
566 141
567 config EXPOLINE !! 142 config ALPHA_LX164
568 def_bool n !! 143 bool "LX164"
569 depends on $(cc-option,-mindirect-bran !! 144 help
570 prompt "Avoid speculative indirect bra !! 145 A technical overview of this board is available at
571 help !! 146 <http://www.unix-ag.org/Linux-Alpha/Architectures/LX164.html>.
572 Compile the kernel with the expoline <<
573 against kernel-to-user data leaks by <<
574 branches. <<
575 Requires a compiler with -mindirect- <<
576 protection. The kernel may run slowe <<
577 147
578 If unsure, say N. !! 148 config ALPHA_MARVEL
>> 149 bool "Marvel"
>> 150 help
>> 151 AlphaServer ES47 / ES80 / GS1280 based on EV7.
579 152
580 config EXPOLINE_EXTERN !! 153 config ALPHA_MIATA
581 def_bool EXPOLINE && CC_IS_GCC && GCC_ !! 154 bool "Miata"
582 $(success,$(srctree)/arch/s39 !! 155 select HAVE_EISA
583 help !! 156 help
584 Generate expolines as external funct !! 157 The Digital PersonalWorkStation (PWS 433a, 433au, 500a, 500au, 600a,
585 This option is required for some too !! 158 or 600au).
586 are enabled. The kernel is compiled <<
587 -mindirect-branch=thunk-extern, whic <<
588 159
589 choice !! 160 config ALPHA_MIKASA
590 prompt "Expoline default" !! 161 bool "Mikasa"
591 depends on EXPOLINE !! 162 help
592 default EXPOLINE_FULL !! 163 AlphaServer 1000-based Alpha systems.
593 164
594 config EXPOLINE_OFF !! 165 config ALPHA_NAUTILUS
595 bool "spectre_v2=off" !! 166 bool "Nautilus"
>> 167 help
>> 168 Alpha systems based on the AMD 751 & ALI 1543C chipsets.
596 169
597 config EXPOLINE_AUTO !! 170 config ALPHA_NORITAKE
598 bool "spectre_v2=auto" !! 171 bool "Noritake"
>> 172 select HAVE_EISA
>> 173 help
>> 174 AlphaServer 1000A, AlphaServer 600A, and AlphaServer 800-based
>> 175 systems.
599 176
600 config EXPOLINE_FULL !! 177 config ALPHA_PC164
601 bool "spectre_v2=on" !! 178 bool "PC164"
602 179
603 endchoice !! 180 config ALPHA_RAWHIDE
>> 181 bool "Rawhide"
>> 182 select HAVE_EISA
>> 183 help
>> 184 AlphaServer 1200, AlphaServer 4000 and AlphaServer 4100 machines.
>> 185 See HOWTO at
>> 186 <http://www.alphalinux.org/docs/rawhide/4100_install.shtml>.
604 187
605 config RELOCATABLE !! 188 config ALPHA_RUFFIAN
606 def_bool y !! 189 bool "Ruffian"
607 help 190 help
608 This builds a kernel image that reta !! 191 Samsung APC164UX. There is a page on known problems and workarounds
609 so it can be loaded at an arbitrary !! 192 at <http://www.alphalinux.org/faq/FAQ-11.html>.
610 The relocations make the kernel imag <<
611 10%), but are discarded at runtime. <<
612 Note: this option exists only for do <<
613 not remove it. <<
614 <<
615 config RANDOMIZE_BASE <<
616 bool "Randomize the address of the ker <<
617 default y <<
618 help <<
619 In support of Kernel Address Space L <<
620 this randomizes the address at which <<
621 as a security feature that deters ex <<
622 knowledge of the location of kernel <<
623 <<
624 config RANDOMIZE_IDENTITY_BASE <<
625 bool "Randomize the address of the ide <<
626 depends on RANDOMIZE_BASE <<
627 default DEBUG_VM <<
628 help <<
629 The identity mapping base address is <<
630 Allow randomization of that base to <<
631 notion of physical and virtual addre <<
632 That does not have any impact on the <<
633 kernel image is loaded. <<
634 <<
635 If unsure, say N <<
636 <<
637 config KERNEL_IMAGE_BASE <<
638 hex "Kernel image base address" <<
639 range 0x100000 0x1FFFFFE0000000 if !KA <<
640 range 0x100000 0x1BFFFFE0000000 if KAS <<
641 default 0x3FFE0000000 if !KASAN <<
642 default 0x7FFFE0000000 if KASAN <<
643 help <<
644 This is the address at which the ker <<
645 Kernel Address Space Layout Randomiz <<
646 <<
647 In case the Protected virtualization <<
648 Ultravisor imposes a virtual address <<
649 option leads to the kernel image exc <<
650 this option is ignored and the image <<
651 <<
652 If the value of this option leads to <<
653 the virtual memory where other data <<
654 option is ignored and the image is l <<
655 193
656 endmenu !! 194 config ALPHA_RX164
>> 195 bool "RX164"
657 196
658 menu "Memory setup" !! 197 config ALPHA_SX164
>> 198 bool "SX164"
659 199
660 config ARCH_SPARSEMEM_ENABLE !! 200 config ALPHA_SABLE
661 def_bool y !! 201 bool "Sable"
662 select SPARSEMEM_VMEMMAP_ENABLE !! 202 select HAVE_EISA
663 select SPARSEMEM_VMEMMAP !! 203 help
>> 204 Digital AlphaServer 2000 and 2100-based systems.
664 205
665 config ARCH_SPARSEMEM_DEFAULT !! 206 config ALPHA_SHARK
666 def_bool y !! 207 bool "Shark"
667 208
668 config MAX_PHYSMEM_BITS !! 209 config ALPHA_TAKARA
669 int "Maximum size of supported physica !! 210 bool "Takara"
670 range 42 53 !! 211 help
671 default "46" !! 212 Alpha 11164-based OEM single-board computer.
672 help <<
673 This option specifies the maximum su <<
674 in bits. Supported is any size betwe <<
675 Increasing the number of bits also i <<
676 By default 46 bits (64TB) are suppor <<
677 213
678 config CHECK_STACK !! 214 config ALPHA_TITAN
679 def_bool y !! 215 bool "Titan"
680 depends on !VMAP_STACK <<
681 prompt "Detect kernel stack overflow" <<
682 help 216 help
683 This option enables the compiler opt !! 217 AlphaServer ES45/DS25 SMP based on EV68 and Titan chipset.
684 -mstack-size if they are available. <<
685 it will emit additional code to each <<
686 an illegal operation if the kernel s <<
687 <<
688 Say N if you are unsure. <<
689 <<
690 config STACK_GUARD <<
691 int "Size of the guard area (128-1024) <<
692 range 128 1024 <<
693 depends on CHECK_STACK <<
694 default "256" <<
695 help <<
696 This allows you to specify the size <<
697 end of the kernel stack. If the kern <<
698 area on function entry an illegal op <<
699 needs to be a power of 2. Please kee <<
700 interrupt frame is 184 bytes for 31 <<
701 The minimum size for the stack guard <<
702 512 for 64 bit. <<
703 218
704 endmenu !! 219 config ALPHA_WILDFIRE
>> 220 bool "Wildfire"
>> 221 help
>> 222 AlphaServer GS 40/80/160/320 SMP based on the EV67 core.
705 223
706 menu "I/O subsystem" !! 224 endchoice
707 225
708 config QDIO !! 226 # clear all implied options (don't want default values for those):
709 def_tristate y !! 227 # Most of these machines have ISA slots; not exactly sure which don't,
710 prompt "QDIO support" !! 228 # and this doesn't activate hordes of code, so do it always.
>> 229 config ISA
>> 230 bool
>> 231 default y
711 help 232 help
712 This driver provides the Queued Dire !! 233 Find out whether you have ISA slots on your motherboard. ISA is the
713 IBM System z. !! 234 name of a bus system, i.e. the way the CPU talks to the other stuff
714 !! 235 inside your box. Other bus systems are PCI, EISA, MicroChannel
715 To compile this driver as a module, !! 236 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
716 module will be called qdio. !! 237 newer boards don't support it. If you have ISA, say Y, otherwise N.
717 238
718 If unsure, say Y. !! 239 config ISA_DMA_API
>> 240 bool
>> 241 default y
719 242
720 if PCI !! 243 config ALPHA_CIA
>> 244 bool
>> 245 depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_NORITAKE || ALPHA_MIKASA || ALPHA_PC164 || ALPHA_TAKARA || ALPHA_ALCOR
>> 246 default y
721 247
722 config PCI_NR_FUNCTIONS !! 248 config ALPHA_EV56
723 int "Maximum number of PCI functions ( !! 249 bool
724 range 1 4096 !! 250 default y if ALPHA_ALCOR || ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA || ALPHA_NORITAKE || ALPHA_MIKASA || ALPHA_RAWHIDE || ALPHA_SABLE
725 default "512" !! 251
726 help !! 252 config ALPHA_T2
727 This allows you to specify the maxim !! 253 bool
728 this kernel will support. !! 254 depends on ALPHA_SABLE
>> 255 default y
729 256
730 endif # PCI !! 257 config ALPHA_PYXIS
>> 258 bool
>> 259 depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN
>> 260 default y
731 261
732 config HAS_IOMEM !! 262 config ALPHA_EV6
733 def_bool PCI !! 263 bool
>> 264 depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL
>> 265 default y
734 266
735 config CHSC_SCH !! 267 config ALPHA_TSUNAMI
736 def_tristate m !! 268 bool
737 prompt "Support for CHSC subchannels" !! 269 depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER
738 help !! 270 default y
739 This driver allows usage of CHSC sub <<
740 is usually present on LPAR only. <<
741 The driver creates a device /dev/chs <<
742 obtain I/O configuration information <<
743 to issue asynchronous chsc commands <<
744 You will usually only want to use th <<
745 LPAR designated for system managemen <<
746 271
747 To compile this driver as a module, !! 272 config ALPHA_EV67
748 module will be called chsc_sch. !! 273 bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER
>> 274 default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
>> 275 help
>> 276 Is this a machine based on the EV67 core? If in doubt, select N here
>> 277 and the machine will be treated as an EV6.
>> 278
>> 279 config ALPHA_MCPCIA
>> 280 bool
>> 281 depends on ALPHA_RAWHIDE
>> 282 default y
749 283
750 If unsure, say N. !! 284 config ALPHA_POLARIS
>> 285 bool
>> 286 depends on ALPHA_RX164
>> 287 default y
751 288
752 config SCM_BUS !! 289 config ALPHA_IRONGATE
753 def_bool y !! 290 bool
754 prompt "SCM bus driver" !! 291 depends on ALPHA_NAUTILUS
755 help !! 292 default y
756 Bus driver for Storage Class Memory. <<
757 293
758 config EADM_SCH !! 294 config GENERIC_HWEIGHT
759 def_tristate m !! 295 bool
760 prompt "Support for EADM subchannels" !! 296 default y if !ALPHA_EV67
761 depends on SCM_BUS <<
762 help <<
763 This driver allows usage of EADM sub <<
764 as a communication vehicle for SCM i <<
765 297
766 To compile this driver as a module, !! 298 config ALPHA_BROKEN_IRQ_MASK
767 module will be called eadm_sch. !! 299 bool
>> 300 depends on ALPHA_GENERIC || ALPHA_PC164
>> 301 default y
768 302
769 config AP !! 303 config VGA_HOSE
770 def_tristate y !! 304 bool
771 prompt "Support for Adjunct Processors !! 305 depends on VGA_CONSOLE && (ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL || ALPHA_TSUNAMI)
>> 306 default y
772 help 307 help
773 This driver allows usage to Adjunct !! 308 Support VGA on an arbitrary hose; needed for several platforms
774 the ap bus, cards and queues. Suppor !! 309 which always have multiple hoses, and whose consoles support it.
775 the CryptoExpress Cards (CEX). <<
776 310
777 To compile this driver as a module, <<
778 module will be called ap. <<
779 311
780 If unsure, say Y (default). !! 312 config ALPHA_QEMU
781 !! 313 bool "Run under QEMU emulation"
782 config AP_DEBUG !! 314 depends on !ALPHA_GENERIC
783 def_bool n <<
784 prompt "Enable debug features for Adju <<
785 depends on AP <<
786 help 315 help
787 Say 'Y' here to enable some addition !! 316 Assume the presence of special features supported by QEMU PALcode
788 Processor (ap) devices. !! 317 that reduce the overhead of system emulation.
789 <<
790 There will be some more sysfs attrib <<
791 318
792 Do not enable on production level ke !! 319 Generic kernels will auto-detect QEMU. But when building a
>> 320 system-specific kernel, the assumption is that we want to
>> 321 eliminate as many runtime tests as possible.
793 322
794 If unsure, say N. 323 If unsure, say N.
795 324
796 config VFIO_CCW <<
797 def_tristate n <<
798 prompt "Support for VFIO-CCW subchanne <<
799 depends on VFIO <<
800 select VFIO_MDEV <<
801 help <<
802 This driver allows usage of I/O subc <<
803 <<
804 To compile this driver as a module, <<
805 module will be called vfio_ccw. <<
806 <<
807 config VFIO_AP <<
808 def_tristate n <<
809 prompt "VFIO support for AP devices" <<
810 depends on KVM <<
811 depends on VFIO <<
812 depends on AP <<
813 select VFIO_MDEV <<
814 help <<
815 This driver grants access to Adjunct <<
816 via the VFIO mediated device interfa <<
817 325
818 To compile this driver as a module, !! 326 config ALPHA_SRM
819 will be called vfio_ap. !! 327 bool "Use SRM as bootloader" if ALPHA_PC164 || ALPHA_TAKARA || ALPHA_ALCOR || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_NAUTILUS
>> 328 depends on TTY
>> 329 default y if ALPHA_MIKASA || ALPHA_SABLE || ALPHA_NORITAKE || ALPHA_DP264 || ALPHA_RAWHIDE || ALPHA_EIGER || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
>> 330 help
>> 331 There are two different types of booting firmware on Alphas: SRM,
>> 332 which is command line driven, and ARC, which uses menus and arrow
>> 333 keys. Details about the Linux/Alpha booting process are contained in
>> 334 the Linux/Alpha FAQ, accessible on the WWW from
>> 335 <http://www.alphalinux.org/>.
>> 336
>> 337 The usual way to load Linux on an Alpha machine is to use MILO
>> 338 (a bootloader that lets you pass command line parameters to the
>> 339 kernel just like lilo does for the x86 architecture) which can be
>> 340 loaded either from ARC or can be installed directly as a permanent
>> 341 firmware replacement from floppy (which requires changing a certain
>> 342 jumper on the motherboard). If you want to do either of these, say N
>> 343 here. If MILO doesn't work on your system (true for Jensen
>> 344 motherboards), you can bypass it altogether and boot Linux directly
>> 345 from an SRM console; say Y here in order to do that. Note that you
>> 346 won't be able to boot from an IDE disk using SRM.
820 347
821 endmenu !! 348 If unsure, say N.
822 349
823 config CCW !! 350 config ARCH_MAY_HAVE_PC_FDC
824 def_bool y 351 def_bool y
825 352
826 config HAVE_PNETID !! 353 config SMP
827 tristate !! 354 bool "Symmetric multi-processing support"
828 default (SMC || CCWGROUP) !! 355 depends on ALPHA_SABLE || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL
829 <<
830 menu "Virtualization" <<
831 <<
832 config PFAULT <<
833 def_bool y <<
834 prompt "Pseudo page fault support" <<
835 help 356 help
836 Select this option, if you want to u !! 357 This enables support for systems with more than one CPU. If you have
837 handling under VM. If running native !! 358 a system with only one CPU, say N. If you have a system with more
838 has no effect. If your VM does not s !! 359 than one CPU, say Y.
839 pseudo page fault handling will be u !! 360
840 Note that VM 4.2 supports PFAULT but !! 361 If you say N here, the kernel will run on uni- and multiprocessor
841 implementation that causes some prob !! 362 machines, but will use only one CPU of a multiprocessor machine. If
842 Everybody who wants to run Linux und !! 363 you say Y here, the kernel will run on many, but not all,
843 this option. !! 364 uniprocessor machines. On a uniprocessor machine, the kernel
844 !! 365 will run faster if you say N here.
845 config CMM <<
846 def_tristate n <<
847 prompt "Cooperative memory management" <<
848 help <<
849 Select this option, if you want to e <<
850 to reduce the memory size of the sys <<
851 by allocating pages of memory and pu <<
852 makes sense for a system running und <<
853 will be reused by VM for other guest <<
854 allows an external monitor to balanc <<
855 Everybody who wants to run Linux und <<
856 option. <<
857 366
858 config CMM_IUCV !! 367 See also the SMP-HOWTO available at
859 def_bool y !! 368 <https://www.tldp.org/docs.html#howto>.
860 prompt "IUCV special message interface <<
861 depends on CMM && (SMSGIUCV=y || CMM=S <<
862 help <<
863 Select this option to enable the spe <<
864 the cooperative memory management. <<
865 369
866 config APPLDATA_BASE !! 370 If you don't know what to do here, say N.
867 def_bool n <<
868 prompt "Linux - VM Monitor Stream, bas <<
869 depends on PROC_SYSCTL <<
870 help <<
871 This provides a kernel interface for <<
872 monitor records. The monitor records <<
873 intervals, once the timer is started <<
874 Writing 1 or 0 to /proc/appldata/tim <<
875 i.e. enables or disables monitoring <<
876 A custom interval value (in seconds) <<
877 /proc/appldata/interval. <<
878 <<
879 Defaults are 60 seconds interval and <<
880 The /proc entries can also be read f <<
881 <<
882 config APPLDATA_MEM <<
883 def_tristate m <<
884 prompt "Monitor memory management stat <<
885 depends on APPLDATA_BASE && VM_EVENT_C <<
886 help <<
887 This provides memory management rela <<
888 Stream, like paging/swapping rate, m <<
889 Writing 1 or 0 to /proc/appldata/mem <<
890 APPLDATA monitor record, i.e. enable <<
891 on the z/VM side. <<
892 <<
893 Default is disabled. <<
894 The /proc entry can also be read fro <<
895 <<
896 This can also be compiled as a modul <<
897 appldata_mem.o. <<
898 <<
899 config APPLDATA_OS <<
900 def_tristate m <<
901 prompt "Monitor OS statistics" <<
902 depends on APPLDATA_BASE <<
903 help <<
904 This provides OS related data to the <<
905 CPU utilisation, etc. <<
906 Writing 1 or 0 to /proc/appldata/os <<
907 APPLDATA monitor record, i.e. enable <<
908 on the z/VM side. <<
909 <<
910 Default is disabled. <<
911 This can also be compiled as a modul <<
912 appldata_os.o. <<
913 <<
914 config APPLDATA_NET_SUM <<
915 def_tristate m <<
916 prompt "Monitor overall network statis <<
917 depends on APPLDATA_BASE && NET <<
918 help <<
919 This provides network related data t <<
920 currently there is only a total sum <<
921 per-interface data. <<
922 Writing 1 or 0 to /proc/appldata/net <<
923 APPLDATA monitor record, i.e. enable <<
924 on the z/VM side. <<
925 <<
926 Default is disabled. <<
927 This can also be compiled as a modul <<
928 appldata_net_sum.o. <<
929 371
930 config S390_HYPFS !! 372 config NR_CPUS
931 def_bool y !! 373 int "Maximum number of CPUs (2-32)"
932 prompt "s390 hypervisor information" !! 374 range 2 32
>> 375 depends on SMP
>> 376 default "32" if ALPHA_GENERIC || ALPHA_MARVEL
>> 377 default "4" if !ALPHA_GENERIC && !ALPHA_MARVEL
933 help 378 help
934 This provides several binary files a !! 379 MARVEL support can handle a maximum of 32 CPUs, all the others
935 provide accounting information in an !! 380 with working support have a maximum of 4 CPUs.
936 381
937 config S390_HYPFS_FS !! 382 config ARCH_SPARSEMEM_ENABLE
938 def_bool n !! 383 bool "Sparse Memory Support"
939 prompt "s390 hypervisor file system su <<
940 select SYS_HYPERVISOR <<
941 depends on S390_HYPFS <<
942 help 384 help
943 This is a virtual file system intend !! 385 Say Y to support efficient handling of discontiguous physical memory,
944 information in an s390 hypervisor en !! 386 for systems that have huge holes in the physical address space.
945 is deprecated and should not be used <<
946 387
947 Say N if you are unsure. !! 388 config ALPHA_WTINT
>> 389 bool "Use WTINT" if ALPHA_SRM || ALPHA_GENERIC
>> 390 default y if ALPHA_QEMU
>> 391 default n if ALPHA_EV56
>> 392 default n if !ALPHA_SRM && !ALPHA_GENERIC
>> 393 default y if SMP
>> 394 help
>> 395 The Wait for Interrupt (WTINT) PALcall attempts to place the CPU
>> 396 to sleep until the next interrupt. This may reduce the power
>> 397 consumed, and the heat produced by the computer. However, it has
>> 398 the side effect of making the cycle counter unreliable as a timing
>> 399 device across the sleep.
948 400
949 source "arch/s390/kvm/Kconfig" !! 401 For emulation under QEMU, definitely say Y here, as we have other
>> 402 mechanisms for measuring time than the cycle counter.
950 403
951 config S390_GUEST !! 404 For EV4 (but not LCA), EV5 and EV56 systems, or for systems running
952 def_bool y !! 405 MILO, sleep mode is not supported so you might as well say N here.
953 prompt "s390 support for virtio device <<
954 select TTY <<
955 select VIRTUALIZATION <<
956 select VIRTIO <<
957 help <<
958 Enabling this option adds support fo <<
959 drivers on s390. <<
960 406
961 Select this option if you want to ru !! 407 For SMP systems we cannot use the cycle counter for timing anyway,
962 the KVM hypervisor. !! 408 so you might as well say Y here.
963 409
964 endmenu !! 410 If unsure, say N.
>> 411
>> 412 # LARGE_VMALLOC is racy, if you *really* need it then fix it first
>> 413 config ALPHA_LARGE_VMALLOC
>> 414 bool
>> 415 help
>> 416 Process creation and other aspects of virtual memory management can
>> 417 be streamlined if we restrict the kernel to one PGD for all vmalloc
>> 418 allocations. This equates to about 8GB.
>> 419
>> 420 Under normal circumstances, this is so far and above what is needed
>> 421 as to be laughable. However, there are certain applications (such
>> 422 as benchmark-grade in-kernel web serving) that can make use of as
>> 423 much vmalloc space as is available.
>> 424
>> 425 Say N unless you know you need gobs and gobs of vmalloc space.
>> 426
>> 427 config VERBOSE_MCHECK
>> 428 bool "Verbose Machine Checks"
>> 429
>> 430 config VERBOSE_MCHECK_ON
>> 431 int "Verbose Printing Mode (0=off, 1=on, 2=all)"
>> 432 depends on VERBOSE_MCHECK
>> 433 default 1
>> 434 help
>> 435 This option allows the default printing mode to be set, and then
>> 436 possibly overridden by a boot command argument.
>> 437
>> 438 For example, if one wanted the option of printing verbose
>> 439 machine checks, but wanted the default to be as if verbose
>> 440 machine check printing was turned off, then one would choose
>> 441 the printing mode to be 0. Then, upon reboot, one could add
>> 442 the boot command line "verbose_mcheck=1" to get the normal
>> 443 verbose machine check printing, or "verbose_mcheck=2" to get
>> 444 the maximum information available.
>> 445
>> 446 Take the default (1) unless you want more control or more info.
965 447
966 config S390_MODULES_SANITY_TEST_HELPERS !! 448 choice
967 def_bool n !! 449 prompt "Timer interrupt frequency (HZ)?"
>> 450 default HZ_128 if ALPHA_QEMU
>> 451 default HZ_1200 if ALPHA_RAWHIDE
>> 452 default HZ_1024
>> 453 help
>> 454 The frequency at which timer interrupts occur. A high frequency
>> 455 minimizes latency, whereas a low frequency minimizes overhead of
>> 456 process accounting. The later effect is especially significant
>> 457 when being run under QEMU.
>> 458
>> 459 Note that some Alpha hardware cannot change the interrupt frequency
>> 460 of the timer. If unsure, say 1024 (or 1200 for Rawhide).
>> 461
>> 462 config HZ_32
>> 463 bool "32 Hz"
>> 464 config HZ_64
>> 465 bool "64 Hz"
>> 466 config HZ_128
>> 467 bool "128 Hz"
>> 468 config HZ_256
>> 469 bool "256 Hz"
>> 470 config HZ_1024
>> 471 bool "1024 Hz"
>> 472 config HZ_1200
>> 473 bool "1200 Hz"
>> 474 endchoice
968 475
969 menu "Selftests" !! 476 config HZ
>> 477 int
>> 478 default 32 if HZ_32
>> 479 default 64 if HZ_64
>> 480 default 128 if HZ_128
>> 481 default 256 if HZ_256
>> 482 default 1200 if HZ_1200
>> 483 default 1024
>> 484
>> 485 config SRM_ENV
>> 486 tristate "SRM environment through procfs"
>> 487 depends on PROC_FS
>> 488 help
>> 489 If you enable this option, a subdirectory inside /proc called
>> 490 /proc/srm_environment will give you access to the all important
>> 491 SRM environment variables (those which have a name) and also
>> 492 to all others (by their internal number).
>> 493
>> 494 SRM is something like a BIOS for Alpha machines. There are some
>> 495 other such BIOSes, like AlphaBIOS, which this driver cannot
>> 496 support (hey, that's not SRM!).
>> 497
>> 498 Despite the fact that this driver doesn't work on all Alphas (but
>> 499 only on those which have SRM as their firmware), it's save to
>> 500 build it even if your particular machine doesn't know about SRM
>> 501 (or if you intend to compile a generic kernel). It will simply
>> 502 not create those subdirectory in /proc (and give you some warning,
>> 503 of course).
970 504
971 config S390_UNWIND_SELFTEST !! 505 This driver is also available as a module and will be called
972 def_tristate n !! 506 srm_env then.
973 depends on KUNIT <<
974 default KUNIT_ALL_TESTS <<
975 prompt "Test unwind functions" <<
976 help <<
977 This option enables s390 specific st <<
978 module. This option is not useful fo <<
979 kernels, but only for kernel develop <<
980 <<
981 Say N if you are unsure. <<
982 <<
983 config S390_KPROBES_SANITY_TEST <<
984 def_tristate n <<
985 prompt "Enable s390 specific kprobes t <<
986 depends on KPROBES <<
987 depends on KUNIT <<
988 help <<
989 This option enables an s390 specific <<
990 is not useful for distributions or g <<
991 developers working on architecture c <<
992 <<
993 Say N if you are unsure. <<
994 <<
995 config S390_MODULES_SANITY_TEST <<
996 def_tristate n <<
997 depends on KUNIT <<
998 default KUNIT_ALL_TESTS <<
999 prompt "Enable s390 specific modules t <<
1000 select S390_MODULES_SANITY_TEST_HELPE <<
1001 help <<
1002 This option enables an s390 specifi <<
1003 not useful for distributions or gen <<
1004 kernel developers working on archit <<
1005 507
1006 Say N if you are unsure. <<
1007 endmenu 508 endmenu
>> 509
>> 510 # DUMMY_CONSOLE may be defined in drivers/video/console/Kconfig
>> 511 # but we also need it if VGA_HOSE is set
>> 512 config DUMMY_CONSOLE
>> 513 bool
>> 514 depends on VGA_HOSE
>> 515 default y
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