Commit | Line | Data |
---|---|---|
b2441318 | 1 | # SPDX-License-Identifier: GPL-2.0 |
1da177e4 | 2 | config MMU |
61d48c2c | 3 | def_bool y |
1da177e4 | 4 | |
66701b14 | 5 | config ZONE_DMA |
69dbb2f7 | 6 | def_bool y |
66701b14 | 7 | |
2fd92273 HC |
8 | config CPU_BIG_ENDIAN |
9 | def_bool y | |
10 | ||
2b105ff9 | 11 | config LOCKDEP_SUPPORT |
61d48c2c | 12 | def_bool y |
2b105ff9 | 13 | |
5bdc9b44 | 14 | config STACKTRACE_SUPPORT |
61d48c2c | 15 | def_bool y |
5bdc9b44 | 16 | |
f0d1b0b3 | 17 | config ARCH_HAS_ILOG2_U32 |
6f9a3c33 | 18 | def_bool n |
f0d1b0b3 DH |
19 | |
20 | config ARCH_HAS_ILOG2_U64 | |
6f9a3c33 | 21 | def_bool n |
f0d1b0b3 | 22 | |
7e33db4e | 23 | config GENERIC_HWEIGHT |
61d48c2c | 24 | def_bool y |
7e33db4e | 25 | |
c0007f1a | 26 | config GENERIC_BUG |
6f9a3c33 | 27 | def_bool y if BUG |
c0007f1a | 28 | |
52499f40 HC |
29 | config GENERIC_BUG_RELATIVE_POINTERS |
30 | def_bool y | |
31 | ||
b6b40c53 | 32 | config GENERIC_LOCKBREAK |
67626fad | 33 | def_bool y if PREEMPT |
b6b40c53 | 34 | |
402b0862 | 35 | config PGSTE |
6f9a3c33 | 36 | def_bool y if KVM |
402b0862 | 37 | |
6a11f75b AM |
38 | config ARCH_SUPPORTS_DEBUG_PAGEALLOC |
39 | def_bool y | |
40 | ||
843c48fd JG |
41 | config AUDIT_ARCH |
42 | def_bool y | |
43 | ||
ce816fa8 | 44 | config NO_IOPORT_MAP |
c8717a3d JG |
45 | def_bool y |
46 | ||
47 | config PCI_QUIRKS | |
48 | def_bool n | |
49 | ||
2a0a5b22 | 50 | config ARCH_SUPPORTS_UPROBES |
5a79859a | 51 | def_bool y |
2a0a5b22 | 52 | |
5e785963 VG |
53 | config KASAN_SHADOW_OFFSET |
54 | hex | |
55 | depends on KASAN | |
5dff0381 | 56 | default 0x18000000000000 if KASAN_S390_4_LEVEL_PAGING |
5e785963 VG |
57 | default 0x30000000000 |
58 | ||
347a8dc3 | 59 | config S390 |
61d48c2c | 60 | def_bool y |
23fefe11 | 61 | select ARCH_BINFMT_ELF_STATE |
21266be9 | 62 | select ARCH_HAS_DEVMEM_IS_ALLOWED |
2b68f6ca | 63 | select ARCH_HAS_ELF_RANDOMIZE |
79962038 | 64 | select ARCH_HAS_FORTIFY_SOURCE |
957e3fac | 65 | select ARCH_HAS_GCOV_PROFILE_ALL |
4eb0716e | 66 | select ARCH_HAS_GIGANTIC_PAGE |
907fa061 | 67 | select ARCH_HAS_KCOV |
0c9c1d56 | 68 | select ARCH_HAS_MEM_ENCRYPT |
3010a5ea | 69 | select ARCH_HAS_PTE_SPECIAL |
d2852a22 | 70 | select ARCH_HAS_SET_MEMORY |
ad21fc4f LA |
71 | select ARCH_HAS_STRICT_KERNEL_RWX |
72 | select ARCH_HAS_STRICT_MODULE_RWX | |
aa0d6e70 | 73 | select ARCH_HAS_SYSCALL_WRAPPER |
c42d8c7d | 74 | select ARCH_HAS_UBSAN_SANITIZE_ALL |
0e0d04a8 | 75 | select ARCH_HAVE_NMI_SAFE_CMPXCHG |
6beb0009 TG |
76 | select ARCH_INLINE_READ_LOCK |
77 | select ARCH_INLINE_READ_LOCK_BH | |
78 | select ARCH_INLINE_READ_LOCK_IRQ | |
79 | select ARCH_INLINE_READ_LOCK_IRQSAVE | |
0e0d04a8 | 80 | select ARCH_INLINE_READ_TRYLOCK |
6beb0009 TG |
81 | select ARCH_INLINE_READ_UNLOCK |
82 | select ARCH_INLINE_READ_UNLOCK_BH | |
83 | select ARCH_INLINE_READ_UNLOCK_IRQ | |
84 | select ARCH_INLINE_READ_UNLOCK_IRQRESTORE | |
0e0d04a8 HC |
85 | select ARCH_INLINE_SPIN_LOCK |
86 | select ARCH_INLINE_SPIN_LOCK_BH | |
87 | select ARCH_INLINE_SPIN_LOCK_IRQ | |
88 | select ARCH_INLINE_SPIN_LOCK_IRQSAVE | |
89 | select ARCH_INLINE_SPIN_TRYLOCK | |
90 | select ARCH_INLINE_SPIN_TRYLOCK_BH | |
91 | select ARCH_INLINE_SPIN_UNLOCK | |
92 | select ARCH_INLINE_SPIN_UNLOCK_BH | |
93 | select ARCH_INLINE_SPIN_UNLOCK_IRQ | |
94 | select ARCH_INLINE_SPIN_UNLOCK_IRQRESTORE | |
6beb0009 TG |
95 | select ARCH_INLINE_WRITE_LOCK |
96 | select ARCH_INLINE_WRITE_LOCK_BH | |
97 | select ARCH_INLINE_WRITE_LOCK_IRQ | |
98 | select ARCH_INLINE_WRITE_LOCK_IRQSAVE | |
0e0d04a8 | 99 | select ARCH_INLINE_WRITE_TRYLOCK |
6beb0009 TG |
100 | select ARCH_INLINE_WRITE_UNLOCK |
101 | select ARCH_INLINE_WRITE_UNLOCK_BH | |
102 | select ARCH_INLINE_WRITE_UNLOCK_IRQ | |
103 | select ARCH_INLINE_WRITE_UNLOCK_IRQRESTORE | |
350e88ba | 104 | select ARCH_KEEP_MEMBLOCK |
0e0d04a8 | 105 | select ARCH_SAVE_PAGE_KEYS if HIBERNATION |
e991e5bb | 106 | select ARCH_STACKWALK |
36e7fdaa | 107 | select ARCH_SUPPORTS_ATOMIC_RMW |
a763bc8b | 108 | select ARCH_SUPPORTS_NUMA_BALANCING |
295d8fa9 | 109 | select ARCH_USE_BUILTIN_BSWAP |
efc1d23b | 110 | select ARCH_USE_CMPXCHG_LOCKREF |
3f6813b9 | 111 | select ARCH_WANTS_DYNAMIC_TASK_STRUCT |
c1d7e01d | 112 | select ARCH_WANT_IPC_PARSE_VERSION |
0e0d04a8 HC |
113 | select BUILDTIME_EXTABLE_SORT |
114 | select CLONE_BACKWARDS2 | |
5d6a0163 | 115 | select DYNAMIC_FTRACE if FUNCTION_TRACER |
0e0d04a8 | 116 | select GENERIC_CLOCKEVENTS |
8f00b3e2 | 117 | select GENERIC_CPU_AUTOPROBE |
d424986f | 118 | select GENERIC_CPU_VULNERABILITIES |
746479cd | 119 | select GENERIC_FIND_FIRST_BIT |
e80e7813 | 120 | select GENERIC_SMP_IDLE_THREAD |
79c74ecb | 121 | select GENERIC_TIME_VSYSCALL |
0e0d04a8 | 122 | select HAVE_ALIGNED_STRUCT_PAGE if SLUB |
7a017721 | 123 | select HAVE_ARCH_AUDITSYSCALL |
5a79859a | 124 | select HAVE_ARCH_JUMP_LABEL |
13ddb52c | 125 | select HAVE_ARCH_JUMP_LABEL_RELATIVE |
42db5ed8 | 126 | select HAVE_ARCH_KASAN |
fff7fb0b | 127 | select CPU_NO_EFFICIENT_FFS if !HAVE_MARCH_Z9_109_FEATURES |
c63cb468 | 128 | select HAVE_ARCH_SECCOMP_FILTER |
5614dd92 | 129 | select HAVE_ARCH_SOFT_DIRTY |
0e0d04a8 | 130 | select HAVE_ARCH_TRACEHOOK |
5a79859a | 131 | select HAVE_ARCH_TRANSPARENT_HUGEPAGE |
ce3dc447 | 132 | select HAVE_ARCH_VMAP_STACK |
2ff2b7ec | 133 | select HAVE_ASM_MODVERSIONS |
6077776b | 134 | select HAVE_EBPF_JIT if PACK_STACK && HAVE_MARCH_Z196_FEATURES |
0e0d04a8 HC |
135 | select HAVE_CMPXCHG_DOUBLE |
136 | select HAVE_CMPXCHG_LOCAL | |
f50c0e63 | 137 | select HAVE_COPY_THREAD_TLS |
0e0d04a8 | 138 | select HAVE_DEBUG_KMEMLEAK |
e1231b0e | 139 | select HAVE_DMA_CONTIGUOUS |
5a79859a HC |
140 | select HAVE_DYNAMIC_FTRACE |
141 | select HAVE_DYNAMIC_FTRACE_WITH_REGS | |
67a929e0 | 142 | select HAVE_FAST_GUP |
9078a549 | 143 | select HAVE_EFFICIENT_UNALIGNED_ACCESS |
d983c89c | 144 | select HAVE_FENTRY |
0e0d04a8 | 145 | select HAVE_FTRACE_MCOUNT_RECORD |
5a79859a HC |
146 | select HAVE_FUNCTION_GRAPH_TRACER |
147 | select HAVE_FUNCTION_TRACER | |
03b8c7b6 | 148 | select HAVE_FUTEX_CMPXCHG if FUTEX |
bc00b3ec | 149 | select HAVE_GCC_PLUGINS |
0e0d04a8 HC |
150 | select HAVE_KERNEL_BZIP2 |
151 | select HAVE_KERNEL_GZIP | |
8e2872ce | 152 | select HAVE_KERNEL_LZ4 |
0e0d04a8 HC |
153 | select HAVE_KERNEL_LZMA |
154 | select HAVE_KERNEL_LZO | |
89b5202e | 155 | select HAVE_KERNEL_UNCOMPRESSED |
0e0d04a8 HC |
156 | select HAVE_KERNEL_XZ |
157 | select HAVE_KPROBES | |
158 | select HAVE_KRETPROBES | |
5a79859a | 159 | select HAVE_KVM |
21042d43 | 160 | select HAVE_LIVEPATCH |
c33eff60 HC |
161 | select HAVE_PERF_REGS |
162 | select HAVE_PERF_USER_STACK_DUMP | |
0e0d04a8 | 163 | select HAVE_MEMBLOCK_NODE_MAP |
50be6345 | 164 | select HAVE_MEMBLOCK_PHYS_MAP |
9de7d833 | 165 | select HAVE_MMU_GATHER_NO_GATHER |
786d35d4 | 166 | select HAVE_MOD_ARCH_SPECIFIC |
d983c89c | 167 | select HAVE_NOP_MCOUNT |
0e0d04a8 | 168 | select HAVE_OPROFILE |
eb01d42a | 169 | select HAVE_PCI |
0e0d04a8 | 170 | select HAVE_PERF_EVENTS |
9de7d833 | 171 | select HAVE_RCU_TABLE_FREE |
0e0d04a8 | 172 | select HAVE_REGS_AND_STACK_ACCESS_API |
9d6d99e3 | 173 | select HAVE_RSEQ |
0e0d04a8 | 174 | select HAVE_SYSCALL_TRACEPOINTS |
0e0d04a8 | 175 | select HAVE_VIRT_CPU_ACCOUNTING |
eb01d42a CH |
176 | select IOMMU_HELPER if PCI |
177 | select IOMMU_SUPPORT if PCI | |
786d35d4 | 178 | select MODULES_USE_ELF_RELA |
eb01d42a CH |
179 | select NEED_DMA_MAP_STATE if PCI |
180 | select NEED_SG_DMA_LENGTH if PCI | |
7eddd99c | 181 | select OLD_SIGACTION |
93bead43 | 182 | select OLD_SIGSUSPEND3 |
2eac9c2d | 183 | select PCI_DOMAINS if PCI |
eb01d42a | 184 | select PCI_MSI if PCI |
bb98f396 | 185 | select SPARSE_IRQ |
0e0d04a8 | 186 | select SYSCTL_EXCEPTION_TRACE |
d5c352cd | 187 | select THREAD_INFO_IN_TASK |
0563416b | 188 | select TTY |
0e0d04a8 | 189 | select VIRT_CPU_ACCOUNTING |
40565b5a | 190 | select ARCH_HAS_SCALED_CPUTIME |
42a0bb3f | 191 | select HAVE_NMI |
9087c375 | 192 | select ARCH_HAS_FORCE_DMA_UNENCRYPTED |
64e1f0c5 | 193 | select SWIOTLB |
bb99332a | 194 | select GENERIC_ALLOCATOR |
3a368f74 | 195 | |
1da177e4 | 196 | |
fca3e357 | 197 | config SCHED_OMIT_FRAME_POINTER |
6f9a3c33 | 198 | def_bool y |
fca3e357 | 199 | |
c81956c9 KS |
200 | config PGTABLE_LEVELS |
201 | int | |
1aea9b3f | 202 | default 5 |
c81956c9 | 203 | |
21042d43 JS |
204 | source "kernel/livepatch/Kconfig" |
205 | ||
843c48fd JG |
206 | menu "Processor type and features" |
207 | ||
208 | config HAVE_MARCH_Z900_FEATURES | |
209 | def_bool n | |
210 | ||
211 | config HAVE_MARCH_Z990_FEATURES | |
212 | def_bool n | |
213 | select HAVE_MARCH_Z900_FEATURES | |
214 | ||
215 | config HAVE_MARCH_Z9_109_FEATURES | |
216 | def_bool n | |
217 | select HAVE_MARCH_Z990_FEATURES | |
218 | ||
219 | config HAVE_MARCH_Z10_FEATURES | |
220 | def_bool n | |
221 | select HAVE_MARCH_Z9_109_FEATURES | |
222 | ||
223 | config HAVE_MARCH_Z196_FEATURES | |
224 | def_bool n | |
225 | select HAVE_MARCH_Z10_FEATURES | |
226 | ||
991c1505 HC |
227 | config HAVE_MARCH_ZEC12_FEATURES |
228 | def_bool n | |
229 | select HAVE_MARCH_Z196_FEATURES | |
230 | ||
f8b2dcbd MS |
231 | config HAVE_MARCH_Z13_FEATURES |
232 | def_bool n | |
233 | select HAVE_MARCH_ZEC12_FEATURES | |
234 | ||
6997c323 MS |
235 | config HAVE_MARCH_Z14_FEATURES |
236 | def_bool n | |
237 | select HAVE_MARCH_Z13_FEATURES | |
238 | ||
a0e22511 MS |
239 | config HAVE_MARCH_Z15_FEATURES |
240 | def_bool n | |
241 | select HAVE_MARCH_Z14_FEATURES | |
242 | ||
843c48fd JG |
243 | choice |
244 | prompt "Processor type" | |
7072276e | 245 | default MARCH_Z196 |
1da177e4 | 246 | |
843c48fd JG |
247 | config MARCH_Z900 |
248 | bool "IBM zSeries model z800 and z900" | |
5a79859a | 249 | select HAVE_MARCH_Z900_FEATURES |
5474080a | 250 | depends on $(cc-option,-march=z900) |
843c48fd JG |
251 | help |
252 | Select this to enable optimizations for model z800/z900 (2064 and | |
253 | 2066 series). This will enable some optimizations that are not | |
254 | available on older ESA/390 (31 Bit) only CPUs. | |
255 | ||
256 | config MARCH_Z990 | |
257 | bool "IBM zSeries model z890 and z990" | |
5a79859a | 258 | select HAVE_MARCH_Z990_FEATURES |
5474080a | 259 | depends on $(cc-option,-march=z990) |
843c48fd JG |
260 | help |
261 | Select this to enable optimizations for model z890/z990 (2084 and | |
262 | 2086 series). The kernel will be slightly faster but will not work | |
263 | on older machines. | |
264 | ||
265 | config MARCH_Z9_109 | |
266 | bool "IBM System z9" | |
5a79859a | 267 | select HAVE_MARCH_Z9_109_FEATURES |
5474080a | 268 | depends on $(cc-option,-march=z9-109) |
843c48fd JG |
269 | help |
270 | Select this to enable optimizations for IBM System z9 (2094 and | |
271 | 2096 series). The kernel will be slightly faster but will not work | |
272 | on older machines. | |
273 | ||
274 | config MARCH_Z10 | |
275 | bool "IBM System z10" | |
5a79859a | 276 | select HAVE_MARCH_Z10_FEATURES |
5474080a | 277 | depends on $(cc-option,-march=z10) |
843c48fd JG |
278 | help |
279 | Select this to enable optimizations for IBM System z10 (2097 and | |
280 | 2098 series). The kernel will be slightly faster but will not work | |
281 | on older machines. | |
282 | ||
283 | config MARCH_Z196 | |
284 | bool "IBM zEnterprise 114 and 196" | |
5a79859a | 285 | select HAVE_MARCH_Z196_FEATURES |
5474080a | 286 | depends on $(cc-option,-march=z196) |
843c48fd JG |
287 | help |
288 | Select this to enable optimizations for IBM zEnterprise 114 and 196 | |
289 | (2818 and 2817 series). The kernel will be slightly faster but will | |
290 | not work on older machines. | |
1da177e4 | 291 | |
991c1505 | 292 | config MARCH_ZEC12 |
59471227 | 293 | bool "IBM zBC12 and zEC12" |
5a79859a | 294 | select HAVE_MARCH_ZEC12_FEATURES |
5474080a | 295 | depends on $(cc-option,-march=zEC12) |
991c1505 | 296 | help |
59471227 HC |
297 | Select this to enable optimizations for IBM zBC12 and zEC12 (2828 and |
298 | 2827 series). The kernel will be slightly faster but will not work on | |
299 | older machines. | |
991c1505 | 300 | |
f8b2dcbd | 301 | config MARCH_Z13 |
bb3aa614 | 302 | bool "IBM z13s and z13" |
5a79859a | 303 | select HAVE_MARCH_Z13_FEATURES |
5474080a | 304 | depends on $(cc-option,-march=z13) |
f8b2dcbd | 305 | help |
bb3aa614 HC |
306 | Select this to enable optimizations for IBM z13s and z13 (2965 and |
307 | 2964 series). The kernel will be slightly faster but will not work on | |
308 | older machines. | |
f8b2dcbd | 309 | |
6997c323 | 310 | config MARCH_Z14 |
451239eb | 311 | bool "IBM z14 ZR1 and z14" |
6997c323 | 312 | select HAVE_MARCH_Z14_FEATURES |
5474080a | 313 | depends on $(cc-option,-march=z14) |
6997c323 | 314 | help |
451239eb HC |
315 | Select this to enable optimizations for IBM z14 ZR1 and z14 (3907 |
316 | and 3906 series). The kernel will be slightly faster but will not | |
317 | work on older machines. | |
6997c323 | 318 | |
a0e22511 MS |
319 | config MARCH_Z15 |
320 | bool "IBM z15" | |
321 | select HAVE_MARCH_Z15_FEATURES | |
5474080a | 322 | depends on $(cc-option,-march=z15) |
a0e22511 MS |
323 | help |
324 | Select this to enable optimizations for IBM z15 (8562 | |
325 | and 8561 series). The kernel will be slightly faster but will not | |
326 | work on older machines. | |
327 | ||
843c48fd | 328 | endchoice |
1da177e4 | 329 | |
1db9e051 HC |
330 | config MARCH_Z900_TUNE |
331 | def_bool TUNE_Z900 || MARCH_Z900 && TUNE_DEFAULT | |
332 | ||
333 | config MARCH_Z990_TUNE | |
334 | def_bool TUNE_Z990 || MARCH_Z990 && TUNE_DEFAULT | |
335 | ||
336 | config MARCH_Z9_109_TUNE | |
337 | def_bool TUNE_Z9_109 || MARCH_Z9_109 && TUNE_DEFAULT | |
338 | ||
339 | config MARCH_Z10_TUNE | |
340 | def_bool TUNE_Z10 || MARCH_Z10 && TUNE_DEFAULT | |
341 | ||
342 | config MARCH_Z196_TUNE | |
343 | def_bool TUNE_Z196 || MARCH_Z196 && TUNE_DEFAULT | |
344 | ||
345 | config MARCH_ZEC12_TUNE | |
346 | def_bool TUNE_ZEC12 || MARCH_ZEC12 && TUNE_DEFAULT | |
347 | ||
f8b2dcbd MS |
348 | config MARCH_Z13_TUNE |
349 | def_bool TUNE_Z13 || MARCH_Z13 && TUNE_DEFAULT | |
350 | ||
6997c323 MS |
351 | config MARCH_Z14_TUNE |
352 | def_bool TUNE_Z14 || MARCH_Z14 && TUNE_DEFAULT | |
353 | ||
a0e22511 MS |
354 | config MARCH_Z15_TUNE |
355 | def_bool TUNE_Z15 || MARCH_Z15 && TUNE_DEFAULT | |
356 | ||
1db9e051 HC |
357 | choice |
358 | prompt "Tune code generation" | |
359 | default TUNE_DEFAULT | |
360 | help | |
361 | Cause the compiler to tune (-mtune) the generated code for a machine. | |
362 | This will make the code run faster on the selected machine but | |
363 | somewhat slower on other machines. | |
364 | This option only changes how the compiler emits instructions, not the | |
365 | selection of instructions itself, so the resulting kernel will run on | |
366 | all other machines. | |
367 | ||
368 | config TUNE_DEFAULT | |
369 | bool "Default" | |
370 | help | |
371 | Tune the generated code for the target processor for which the kernel | |
372 | will be compiled. | |
373 | ||
1db9e051 HC |
374 | config TUNE_Z900 |
375 | bool "IBM zSeries model z800 and z900" | |
5474080a | 376 | depends on $(cc-option,-mtune=z900) |
1db9e051 HC |
377 | |
378 | config TUNE_Z990 | |
379 | bool "IBM zSeries model z890 and z990" | |
5474080a | 380 | depends on $(cc-option,-mtune=z990) |
1db9e051 HC |
381 | |
382 | config TUNE_Z9_109 | |
383 | bool "IBM System z9" | |
5474080a | 384 | depends on $(cc-option,-mtune=z9-109) |
1db9e051 HC |
385 | |
386 | config TUNE_Z10 | |
387 | bool "IBM System z10" | |
5474080a | 388 | depends on $(cc-option,-mtune=z10) |
1db9e051 HC |
389 | |
390 | config TUNE_Z196 | |
391 | bool "IBM zEnterprise 114 and 196" | |
5474080a | 392 | depends on $(cc-option,-mtune=z196) |
1db9e051 HC |
393 | |
394 | config TUNE_ZEC12 | |
395 | bool "IBM zBC12 and zEC12" | |
5474080a | 396 | depends on $(cc-option,-mtune=zEC12) |
1db9e051 | 397 | |
f8b2dcbd | 398 | config TUNE_Z13 |
89d0180a | 399 | bool "IBM z13s and z13" |
5474080a | 400 | depends on $(cc-option,-mtune=z13) |
f8b2dcbd | 401 | |
6997c323 | 402 | config TUNE_Z14 |
89d0180a | 403 | bool "IBM z14 ZR1 and z14" |
5474080a | 404 | depends on $(cc-option,-mtune=z14) |
6997c323 | 405 | |
a0e22511 MS |
406 | config TUNE_Z15 |
407 | bool "IBM z15" | |
5474080a | 408 | depends on $(cc-option,-mtune=z15) |
a0e22511 | 409 | |
1db9e051 HC |
410 | endchoice |
411 | ||
347a8dc3 | 412 | config 64BIT |
6f9a3c33 | 413 | def_bool y |
d9f7a745 | 414 | |
843c48fd JG |
415 | config COMPAT |
416 | def_bool y | |
417 | prompt "Kernel support for 31 bit emulation" | |
843c48fd JG |
418 | select COMPAT_BINFMT_ELF if BINFMT_ELF |
419 | select ARCH_WANT_OLD_COMPAT_IPC | |
7eddd99c | 420 | select COMPAT_OLD_SIGACTION |
fef747ba | 421 | select HAVE_UID16 |
2813893f | 422 | depends on MULTIUSER |
843c48fd JG |
423 | help |
424 | Select this option if you want to enable your system kernel to | |
425 | handle system-calls from ELF binaries for 31 bit ESA. This option | |
426 | (and some other stuff like libraries and such) is needed for | |
427 | executing 31 bit applications. It is safe to say "Y". | |
428 | ||
96ca7674 AB |
429 | config COMPAT_VDSO |
430 | def_bool COMPAT && !CC_IS_CLANG | |
431 | ||
843c48fd JG |
432 | config SYSVIPC_COMPAT |
433 | def_bool y if COMPAT && SYSVIPC | |
434 | ||
1da177e4 | 435 | config SMP |
6f9a3c33 | 436 | def_bool y |
1da177e4 LT |
437 | |
438 | config NR_CPUS | |
5c75a0da HC |
439 | int "Maximum number of CPUs (2-512)" |
440 | range 2 512 | |
5a79859a | 441 | default "64" |
1da177e4 LT |
442 | help |
443 | This allows you to specify the maximum number of CPUs which this | |
5c75a0da | 444 | kernel will support. The maximum supported value is 512 and the |
1da177e4 LT |
445 | minimum value which makes sense is 2. |
446 | ||
447 | This is purely to save memory - each supported CPU adds | |
448 | approximately sixteen kilobytes to the kernel image. | |
449 | ||
450 | config HOTPLUG_CPU | |
6f9a3c33 | 451 | def_bool y |
1da177e4 | 452 | |
3a368f74 PH |
453 | # Some NUMA nodes have memory ranges that span |
454 | # other nodes. Even though a pfn is valid and | |
455 | # between a node's start and end pfns, it may not | |
456 | # reside on that node. See memmap_init_zone() | |
457 | # for details. <- They meant memory holes! | |
458 | config NODES_SPAN_OTHER_NODES | |
459 | def_bool NUMA | |
460 | ||
461 | config NUMA | |
462 | bool "NUMA support" | |
67626fad | 463 | depends on SCHED_TOPOLOGY |
3a368f74 PH |
464 | default n |
465 | help | |
466 | Enable NUMA support | |
467 | ||
468 | This option adds NUMA support to the kernel. | |
469 | ||
470 | An operation mode can be selected by appending | |
471 | numa=<method> to the kernel command line. | |
472 | ||
473 | The default behaviour is identical to appending numa=plain to | |
474 | the command line. This will create just one node with all | |
475 | available memory and all CPUs in it. | |
476 | ||
477 | config NODES_SHIFT | |
478 | int "Maximum NUMA nodes (as a power of 2)" | |
479 | range 1 10 | |
480 | depends on NUMA | |
481 | default "4" | |
482 | help | |
483 | Specify the maximum number of NUMA nodes available on the target | |
484 | system. Increases memory reserved to accommodate various tables. | |
485 | ||
c29a7baf MH |
486 | menu "Select NUMA modes" |
487 | depends on NUMA | |
488 | ||
489 | config NUMA_EMU | |
490 | bool "NUMA emulation" | |
491 | default y | |
492 | help | |
493 | Numa emulation mode will split the available system memory into | |
494 | equal chunks which then are distributed over the configured number | |
495 | of nodes in a round-robin manner. | |
496 | ||
497 | The number of fake nodes is limited by the number of available memory | |
498 | chunks (i.e. memory size / fake size) and the number of supported | |
499 | nodes in the kernel. | |
500 | ||
501 | The CPUs are assigned to the nodes in a way that partially respects | |
502 | the original machine topology (if supported by the machine). | |
503 | Fair distribution of the CPUs is not guaranteed. | |
504 | ||
505 | config EMU_SIZE | |
506 | hex "NUMA emulation memory chunk size" | |
507 | default 0x10000000 | |
508 | range 0x400000 0x100000000 | |
509 | depends on NUMA_EMU | |
510 | help | |
511 | Select the default size by which the memory is chopped and then | |
512 | assigned to emulated NUMA nodes. | |
513 | ||
514 | This can be overridden by specifying | |
515 | ||
516 | emu_size=<n> | |
517 | ||
518 | on the kernel command line where also suffixes K, M, G, and T are | |
519 | supported. | |
520 | ||
521 | endmenu | |
9236b4dd HC |
522 | |
523 | config SCHED_SMT | |
524 | def_bool n | |
c29a7baf | 525 | |
8d11e021 | 526 | config SCHED_MC |
83a24e32 | 527 | def_bool n |
8d11e021 | 528 | |
4cb14bc8 | 529 | config SCHED_BOOK |
10ad34bc MS |
530 | def_bool n |
531 | ||
adac0f1e HC |
532 | config SCHED_DRAWER |
533 | def_bool n | |
534 | ||
10ad34bc | 535 | config SCHED_TOPOLOGY |
6f9a3c33 | 536 | def_bool y |
10ad34bc | 537 | prompt "Topology scheduler support" |
10ad34bc | 538 | select SCHED_SMT |
83a24e32 | 539 | select SCHED_MC |
10ad34bc | 540 | select SCHED_BOOK |
adac0f1e | 541 | select SCHED_DRAWER |
4cb14bc8 | 542 | help |
10ad34bc MS |
543 | Topology scheduler support improves the CPU scheduler's decision |
544 | making when dealing with machines that have multi-threading, | |
545 | multiple cores or multiple books. | |
4cb14bc8 | 546 | |
8636a1f9 | 547 | source "kernel/Kconfig.hz" |
1da177e4 | 548 | |
bdea9f6f PR |
549 | config KEXEC |
550 | def_bool y | |
551 | select KEXEC_CORE | |
552 | ||
553 | config KEXEC_FILE | |
554 | bool "kexec file based system call" | |
555 | select KEXEC_CORE | |
556 | select BUILD_BIN2C | |
557 | depends on CRYPTO | |
558 | depends on CRYPTO_SHA256 | |
559 | depends on CRYPTO_SHA256_S390 | |
560 | help | |
561 | Enable the kexec file based system call. In contrast to the normal | |
562 | kexec system call this system call takes file descriptors for the | |
563 | kernel and initramfs as arguments. | |
564 | ||
565 | config ARCH_HAS_KEXEC_PURGATORY | |
566 | def_bool y | |
567 | depends on KEXEC_FILE | |
568 | ||
99d5cadf | 569 | config KEXEC_SIG |
e23a8020 | 570 | bool "Verify kernel signature during kexec_file_load() syscall" |
c8424e77 | 571 | depends on KEXEC_FILE && MODULE_SIG_FORMAT |
e23a8020 PR |
572 | help |
573 | This option makes kernel signature verification mandatory for | |
574 | the kexec_file_load() syscall. | |
575 | ||
576 | In addition to that option, you need to enable signature | |
577 | verification for the corresponding kernel image type being | |
578 | loaded in order for this to work. | |
579 | ||
4c637cd8 HF |
580 | config ARCH_RANDOM |
581 | def_bool y | |
582 | prompt "s390 architectural random number generation API" | |
583 | help | |
584 | Enable the s390 architectural random number generation API | |
585 | to provide random data for all consumers within the Linux | |
586 | kernel. | |
587 | ||
588 | When enabled the arch_random_* functions declared in linux/random.h | |
589 | are implemented. The implementation is based on the s390 CPACF | |
590 | instruction subfunction TRNG which provides a real true random | |
591 | number generator. | |
592 | ||
593 | If unsure, say Y. | |
594 | ||
d768bd89 MS |
595 | config KERNEL_NOBP |
596 | def_bool n | |
597 | prompt "Enable modified branch prediction for the kernel by default" | |
598 | help | |
599 | If this option is selected the kernel will switch to a modified | |
600 | branch prediction mode if the firmware interface is available. | |
601 | The modified branch prediction mode improves the behaviour in | |
602 | regard to speculative execution. | |
603 | ||
604 | With the option enabled the kernel parameter "nobp=0" or "nospec" | |
605 | can be used to run the kernel in the normal branch prediction mode. | |
606 | ||
607 | With the option disabled the modified branch prediction mode is | |
608 | enabled with the "nobp=1" kernel parameter. | |
609 | ||
610 | If unsure, say N. | |
611 | ||
f19fbd5e MS |
612 | config EXPOLINE |
613 | def_bool n | |
614 | prompt "Avoid speculative indirect branches in the kernel" | |
615 | help | |
616 | Compile the kernel with the expoline compiler options to guard | |
617 | against kernel-to-user data leaks by avoiding speculative indirect | |
618 | branches. | |
619 | Requires a compiler with -mindirect-branch=thunk support for full | |
620 | protection. The kernel may run slower. | |
621 | ||
622 | If unsure, say N. | |
623 | ||
624 | choice | |
625 | prompt "Expoline default" | |
626 | depends on EXPOLINE | |
627 | default EXPOLINE_FULL | |
628 | ||
629 | config EXPOLINE_OFF | |
630 | bool "spectre_v2=off" | |
631 | ||
6e179d64 | 632 | config EXPOLINE_AUTO |
f19fbd5e MS |
633 | bool "spectre_v2=auto" |
634 | ||
635 | config EXPOLINE_FULL | |
636 | bool "spectre_v2=on" | |
637 | ||
638 | endchoice | |
639 | ||
805bc0bc GS |
640 | config RELOCATABLE |
641 | bool "Build a relocatable kernel" | |
642 | select MODULE_REL_CRCS if MODVERSIONS | |
643 | default y | |
644 | help | |
645 | This builds a kernel image that retains relocation information | |
646 | so it can be loaded at an arbitrary address. | |
647 | The kernel is linked as a position-independent executable (PIE) | |
648 | and contains dynamic relocations which are processed early in the | |
649 | bootup process. | |
650 | The relocations make the kernel image about 15% larger (compressed | |
651 | 10%), but are discarded at runtime. | |
652 | ||
b2d24b97 GS |
653 | config RANDOMIZE_BASE |
654 | bool "Randomize the address of the kernel image (KASLR)" | |
655 | depends on RELOCATABLE | |
656 | default y | |
657 | help | |
658 | In support of Kernel Address Space Layout Randomization (KASLR), | |
659 | this randomizes the address at which the kernel image is loaded, | |
660 | as a security feature that deters exploit attempts relying on | |
661 | knowledge of the location of kernel internals. | |
662 | ||
843c48fd | 663 | endmenu |
1da177e4 | 664 | |
843c48fd | 665 | menu "Memory setup" |
1d057720 | 666 | |
843c48fd | 667 | config ARCH_SPARSEMEM_ENABLE |
6f9a3c33 | 668 | def_bool y |
843c48fd JG |
669 | select SPARSEMEM_VMEMMAP_ENABLE |
670 | select SPARSEMEM_VMEMMAP | |
e65e1fc2 | 671 | |
843c48fd JG |
672 | config ARCH_SPARSEMEM_DEFAULT |
673 | def_bool y | |
1da177e4 | 674 | |
843c48fd JG |
675 | config ARCH_ENABLE_MEMORY_HOTPLUG |
676 | def_bool y if SPARSEMEM | |
0efa4703 | 677 | |
843c48fd JG |
678 | config ARCH_ENABLE_MEMORY_HOTREMOVE |
679 | def_bool y | |
e37f50e1 | 680 | |
ec66ad66 MS |
681 | config ARCH_ENABLE_SPLIT_PMD_PTLOCK |
682 | def_bool y | |
ec66ad66 | 683 | |
843c48fd JG |
684 | config FORCE_MAX_ZONEORDER |
685 | int | |
686 | default "9" | |
f861e405 | 687 | |
b8402b95 HC |
688 | config MAX_PHYSMEM_BITS |
689 | int "Maximum size of supported physical memory in bits (42-53)" | |
690 | range 42 53 | |
691 | default "46" | |
692 | help | |
693 | This option specifies the maximum supported size of physical memory | |
694 | in bits. Supported is any size between 2^42 (4TB) and 2^53 (8PB). | |
695 | Increasing the number of bits also increases the kernel image size. | |
696 | By default 46 bits (64TB) are supported. | |
697 | ||
1da177e4 | 698 | config PACK_STACK |
6f9a3c33 MS |
699 | def_bool y |
700 | prompt "Pack kernel stack" | |
1da177e4 LT |
701 | help |
702 | This option enables the compiler option -mkernel-backchain if it | |
703 | is available. If the option is available the compiler supports | |
704 | the new stack layout which dramatically reduces the minimum stack | |
705 | frame size. With an old compiler a non-leaf function needs a | |
706 | minimum of 96 bytes on 31 bit and 160 bytes on 64 bit. With | |
707 | -mkernel-backchain the minimum size drops to 16 byte on 31 bit | |
708 | and 24 byte on 64 bit. | |
709 | ||
710 | Say Y if you are unsure. | |
711 | ||
1da177e4 | 712 | config CHECK_STACK |
6f9a3c33 | 713 | def_bool y |
ce3dc447 | 714 | depends on !VMAP_STACK |
6f9a3c33 | 715 | prompt "Detect kernel stack overflow" |
1da177e4 LT |
716 | help |
717 | This option enables the compiler option -mstack-guard and | |
718 | -mstack-size if they are available. If the compiler supports them | |
719 | it will emit additional code to each function prolog to trigger | |
720 | an illegal operation if the kernel stack is about to overflow. | |
721 | ||
722 | Say N if you are unsure. | |
723 | ||
724 | config STACK_GUARD | |
725 | int "Size of the guard area (128-1024)" | |
726 | range 128 1024 | |
727 | depends on CHECK_STACK | |
728 | default "256" | |
729 | help | |
730 | This allows you to specify the size of the guard area at the lower | |
731 | end of the kernel stack. If the kernel stack points into the guard | |
732 | area on function entry an illegal operation is triggered. The size | |
733 | needs to be a power of 2. Please keep in mind that the size of an | |
734 | interrupt frame is 184 bytes for 31 bit and 328 bytes on 64 bit. | |
735 | The minimum size for the stack guard should be 256 for 31 bit and | |
736 | 512 for 64 bit. | |
737 | ||
2c190da4 | 738 | config WARN_DYNAMIC_STACK |
6f9a3c33 | 739 | def_bool n |
2c190da4 | 740 | prompt "Emit compiler warnings for function with dynamic stack usage" |
1da177e4 | 741 | help |
2c190da4 JG |
742 | This option enables the compiler option -mwarn-dynamicstack. If the |
743 | compiler supports this options generates warnings for functions | |
744 | that dynamically allocate stack space using alloca. | |
1da177e4 LT |
745 | |
746 | Say N if you are unsure. | |
747 | ||
843c48fd | 748 | endmenu |
3f22ab27 | 749 | |
843c48fd | 750 | menu "I/O subsystem" |
1da177e4 | 751 | |
1da177e4 | 752 | config QDIO |
6f9a3c33 MS |
753 | def_tristate y |
754 | prompt "QDIO support" | |
1da177e4 | 755 | ---help--- |
8129ee16 | 756 | This driver provides the Queued Direct I/O base support for |
efca13bc | 757 | IBM System z. |
1da177e4 LT |
758 | |
759 | To compile this driver as a module, choose M here: the | |
760 | module will be called qdio. | |
761 | ||
762 | If unsure, say Y. | |
763 | ||
c8717a3d JG |
764 | if PCI |
765 | ||
766 | config PCI_NR_FUNCTIONS | |
767 | int "Maximum number of PCI functions (1-4096)" | |
768 | range 1 4096 | |
b18601b0 | 769 | default "128" |
c8717a3d JG |
770 | help |
771 | This allows you to specify the maximum number of PCI functions which | |
772 | this kernel will support. | |
773 | ||
8b96d971 | 774 | endif # PCI |
c8717a3d | 775 | |
c8717a3d JG |
776 | config HAS_IOMEM |
777 | def_bool PCI | |
778 | ||
9d92a7e1 | 779 | config CHSC_SCH |
d9c11b1e | 780 | def_tristate m |
6f9a3c33 | 781 | prompt "Support for CHSC subchannels" |
9d92a7e1 CH |
782 | help |
783 | This driver allows usage of CHSC subchannels. A CHSC subchannel | |
784 | is usually present on LPAR only. | |
785 | The driver creates a device /dev/chsc, which may be used to | |
786 | obtain I/O configuration information about the machine and | |
787 | to issue asynchronous chsc commands (DANGEROUS). | |
788 | You will usually only want to use this interface on a special | |
789 | LPAR designated for system management. | |
790 | ||
791 | To compile this driver as a module, choose M here: the | |
792 | module will be called chsc_sch. | |
793 | ||
794 | If unsure, say N. | |
795 | ||
1d1c8f78 SO |
796 | config SCM_BUS |
797 | def_bool y | |
1d1c8f78 SO |
798 | prompt "SCM bus driver" |
799 | help | |
800 | Bus driver for Storage Class Memory. | |
801 | ||
eadb86ab SO |
802 | config EADM_SCH |
803 | def_tristate m | |
804 | prompt "Support for EADM subchannels" | |
805 | depends on SCM_BUS | |
806 | help | |
807 | This driver allows usage of EADM subchannels. EADM subchannels act | |
808 | as a communication vehicle for SCM increments. | |
809 | ||
810 | To compile this driver as a module, choose M here: the | |
811 | module will be called eadm_sch. | |
812 | ||
63f1934d DJS |
813 | config VFIO_CCW |
814 | def_tristate n | |
815 | prompt "Support for VFIO-CCW subchannels" | |
84cd8fc4 | 816 | depends on S390_CCW_IOMMU && VFIO_MDEV |
63f1934d DJS |
817 | help |
818 | This driver allows usage of I/O subchannels via VFIO-CCW. | |
819 | ||
820 | To compile this driver as a module, choose M here: the | |
821 | module will be called vfio_ccw. | |
822 | ||
1fde5734 TK |
823 | config VFIO_AP |
824 | def_tristate n | |
825 | prompt "VFIO support for AP devices" | |
826 | depends on S390_AP_IOMMU && VFIO_MDEV_DEVICE && KVM | |
827 | help | |
828 | This driver grants access to Adjunct Processor (AP) devices | |
829 | via the VFIO mediated device interface. | |
830 | ||
831 | To compile this driver as a module, choose M here: the module | |
832 | will be called vfio_ap. | |
833 | ||
843c48fd JG |
834 | endmenu |
835 | ||
836 | menu "Dump support" | |
837 | ||
838 | config CRASH_DUMP | |
839 | bool "kernel crash dumps" | |
843c48fd JG |
840 | select KEXEC |
841 | help | |
842 | Generate crash dump after being started by kexec. | |
843 | Crash dump kernels are loaded in the main kernel with kexec-tools | |
844 | into a specially reserved region and then later executed after | |
845 | a crash by kdump/kexec. | |
8b4a503d | 846 | Refer to <file:Documentation/s390/zfcpdump.rst> for more details on this. |
bf28a597 | 847 | This option also enables s390 zfcpdump. |
8b4a503d | 848 | See also <file:Documentation/s390/zfcpdump.rst> |
843c48fd JG |
849 | |
850 | endmenu | |
851 | ||
843c48fd JG |
852 | config SECCOMP |
853 | def_bool y | |
854 | prompt "Enable seccomp to safely compute untrusted bytecode" | |
855 | depends on PROC_FS | |
856 | help | |
857 | This kernel feature is useful for number crunching applications | |
858 | that may need to compute untrusted bytecode during their | |
859 | execution. By using pipes or other transports made available to | |
860 | the process as file descriptors supporting the read/write | |
861 | syscalls, it's possible to isolate those applications in | |
862 | their own address space using seccomp. Once seccomp is | |
863 | enabled via /proc/<pid>/seccomp, it cannot be disabled | |
864 | and the task is only allowed to execute a few safe syscalls | |
865 | defined by each seccomp mode. | |
866 | ||
867 | If unsure, say Y. | |
868 | ||
843c48fd JG |
869 | menu "Power Management" |
870 | ||
871 | config ARCH_HIBERNATION_POSSIBLE | |
5a79859a | 872 | def_bool y |
843c48fd JG |
873 | |
874 | source "kernel/power/Kconfig" | |
875 | ||
876 | endmenu | |
877 | ||
843c48fd JG |
878 | config CCW |
879 | def_bool y | |
880 | ||
b6ef86e9 UB |
881 | config HAVE_PNETID |
882 | tristate | |
883 | default (SMC || CCWGROUP) | |
884 | ||
843c48fd | 885 | menu "Virtualization" |
684de39b | 886 | |
5abb9351 VG |
887 | config PROTECTED_VIRTUALIZATION_GUEST |
888 | def_bool n | |
889 | prompt "Protected virtualization guest support" | |
890 | help | |
891 | Select this option, if you want to be able to run this | |
892 | kernel as a protected virtualization KVM guest. | |
893 | Protected virtualization capable machines have a mini hypervisor | |
894 | located at machine level (an ultravisor). With help of the | |
895 | Ultravisor, KVM will be able to run "protected" VMs, special | |
896 | VMs whose memory and management data are unavailable to KVM. | |
897 | ||
1da177e4 | 898 | config PFAULT |
6f9a3c33 MS |
899 | def_bool y |
900 | prompt "Pseudo page fault support" | |
1da177e4 LT |
901 | help |
902 | Select this option, if you want to use PFAULT pseudo page fault | |
903 | handling under VM. If running native or in LPAR, this option | |
904 | has no effect. If your VM does not support PFAULT, PAGEEX | |
905 | pseudo page fault handling will be used. | |
906 | Note that VM 4.2 supports PFAULT but has a bug in its | |
907 | implementation that causes some problems. | |
908 | Everybody who wants to run Linux under VM != VM4.2 should select | |
909 | this option. | |
910 | ||
1da177e4 | 911 | config CMM |
6f9a3c33 MS |
912 | def_tristate n |
913 | prompt "Cooperative memory management" | |
1da177e4 LT |
914 | help |
915 | Select this option, if you want to enable the kernel interface | |
916 | to reduce the memory size of the system. This is accomplished | |
917 | by allocating pages of memory and put them "on hold". This only | |
918 | makes sense for a system running under VM where the unused pages | |
919 | will be reused by VM for other guest systems. The interface | |
920 | allows an external monitor to balance memory of many systems. | |
921 | Everybody who wants to run Linux under VM should select this | |
922 | option. | |
923 | ||
1da177e4 | 924 | config CMM_IUCV |
6f9a3c33 MS |
925 | def_bool y |
926 | prompt "IUCV special message interface to cooperative memory management" | |
1da177e4 LT |
927 | depends on CMM && (SMSGIUCV=y || CMM=SMSGIUCV) |
928 | help | |
929 | Select this option to enable the special message interface to | |
930 | the cooperative memory management. | |
931 | ||
1da177e4 | 932 | config APPLDATA_BASE |
6f9a3c33 MS |
933 | def_bool n |
934 | prompt "Linux - VM Monitor Stream, base infrastructure" | |
c185b783 | 935 | depends on PROC_FS |
1da177e4 LT |
936 | help |
937 | This provides a kernel interface for creating and updating z/VM APPLDATA | |
938 | monitor records. The monitor records are updated at certain time | |
939 | intervals, once the timer is started. | |
940 | Writing 1 or 0 to /proc/appldata/timer starts(1) or stops(0) the timer, | |
941 | i.e. enables or disables monitoring on the Linux side. | |
942 | A custom interval value (in seconds) can be written to | |
943 | /proc/appldata/interval. | |
944 | ||
945 | Defaults are 60 seconds interval and timer off. | |
946 | The /proc entries can also be read from, showing the current settings. | |
947 | ||
948 | config APPLDATA_MEM | |
6f9a3c33 MS |
949 | def_tristate m |
950 | prompt "Monitor memory management statistics" | |
62fb2ba3 | 951 | depends on APPLDATA_BASE && VM_EVENT_COUNTERS |
1da177e4 LT |
952 | help |
953 | This provides memory management related data to the Linux - VM Monitor | |
954 | Stream, like paging/swapping rate, memory utilisation, etc. | |
955 | Writing 1 or 0 to /proc/appldata/memory creates(1) or removes(0) a z/VM | |
956 | APPLDATA monitor record, i.e. enables or disables monitoring this record | |
957 | on the z/VM side. | |
958 | ||
959 | Default is disabled. | |
960 | The /proc entry can also be read from, showing the current settings. | |
961 | ||
962 | This can also be compiled as a module, which will be called | |
963 | appldata_mem.o. | |
964 | ||
965 | config APPLDATA_OS | |
6f9a3c33 MS |
966 | def_tristate m |
967 | prompt "Monitor OS statistics" | |
1da177e4 LT |
968 | depends on APPLDATA_BASE |
969 | help | |
970 | This provides OS related data to the Linux - VM Monitor Stream, like | |
971 | CPU utilisation, etc. | |
972 | Writing 1 or 0 to /proc/appldata/os creates(1) or removes(0) a z/VM | |
973 | APPLDATA monitor record, i.e. enables or disables monitoring this record | |
974 | on the z/VM side. | |
975 | ||
976 | Default is disabled. | |
977 | This can also be compiled as a module, which will be called | |
978 | appldata_os.o. | |
979 | ||
980 | config APPLDATA_NET_SUM | |
6f9a3c33 MS |
981 | def_tristate m |
982 | prompt "Monitor overall network statistics" | |
70193af9 | 983 | depends on APPLDATA_BASE && NET |
1da177e4 LT |
984 | help |
985 | This provides network related data to the Linux - VM Monitor Stream, | |
986 | currently there is only a total sum of network I/O statistics, no | |
987 | per-interface data. | |
988 | Writing 1 or 0 to /proc/appldata/net_sum creates(1) or removes(0) a z/VM | |
989 | APPLDATA monitor record, i.e. enables or disables monitoring this record | |
990 | on the z/VM side. | |
991 | ||
992 | Default is disabled. | |
993 | This can also be compiled as a module, which will be called | |
994 | appldata_net_sum.o. | |
995 | ||
24bbb1fa | 996 | config S390_HYPFS_FS |
6f9a3c33 MS |
997 | def_bool y |
998 | prompt "s390 hypervisor file system support" | |
24bbb1fa | 999 | select SYS_HYPERVISOR |
24bbb1fa MH |
1000 | help |
1001 | This is a virtual file system intended to provide accounting | |
1002 | information in an s390 hypervisor environment. | |
1003 | ||
843c48fd | 1004 | source "arch/s390/kvm/Kconfig" |
411ed322 | 1005 | |
fa587743 | 1006 | config S390_GUEST |
6f9a3c33 | 1007 | def_bool y |
510cf5a6 | 1008 | prompt "s390 support for virtio devices" |
79b6f7fb | 1009 | select TTY |
80629b0b | 1010 | select VIRTUALIZATION |
fa587743 | 1011 | select VIRTIO |
faeba830 | 1012 | select VIRTIO_CONSOLE |
fa587743 | 1013 | help |
bdd1fc27 CH |
1014 | Enabling this option adds support for virtio based paravirtual device |
1015 | drivers on s390. | |
1da177e4 | 1016 | |
20766c08 | 1017 | Select this option if you want to run the kernel as a guest under |
bdd1fc27 | 1018 | the KVM hypervisor. |
155af2f9 HJP |
1019 | |
1020 | endmenu |