Commit | Line | Data |
---|---|---|
b2441318 | 1 | # SPDX-License-Identifier: GPL-2.0 |
1da177e4 | 2 | config MMU |
61d48c2c | 3 | def_bool y |
1da177e4 | 4 | |
2fd92273 HC |
5 | config CPU_BIG_ENDIAN |
6 | def_bool y | |
7 | ||
2b105ff9 | 8 | config LOCKDEP_SUPPORT |
61d48c2c | 9 | def_bool y |
2b105ff9 | 10 | |
5bdc9b44 | 11 | config STACKTRACE_SUPPORT |
61d48c2c | 12 | def_bool y |
5bdc9b44 | 13 | |
f0d1b0b3 | 14 | config ARCH_HAS_ILOG2_U32 |
6f9a3c33 | 15 | def_bool n |
f0d1b0b3 DH |
16 | |
17 | config ARCH_HAS_ILOG2_U64 | |
6f9a3c33 | 18 | def_bool n |
f0d1b0b3 | 19 | |
3bb11234 AG |
20 | config ARCH_PROC_KCORE_TEXT |
21 | def_bool y | |
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 |
114b9df4 | 33 | def_bool y if PREEMPTION |
b6b40c53 | 34 | |
402b0862 | 35 | config PGSTE |
6f9a3c33 | 36 | def_bool y if KVM |
402b0862 | 37 | |
843c48fd JG |
38 | config AUDIT_ARCH |
39 | def_bool y | |
40 | ||
ce816fa8 | 41 | config NO_IOPORT_MAP |
c8717a3d JG |
42 | def_bool y |
43 | ||
44 | config PCI_QUIRKS | |
45 | def_bool n | |
46 | ||
2a0a5b22 | 47 | config ARCH_SUPPORTS_UPROBES |
5a79859a | 48 | def_bool y |
2a0a5b22 | 49 | |
5e785963 VG |
50 | config KASAN_SHADOW_OFFSET |
51 | hex | |
52 | depends on KASAN | |
9a39abb7 | 53 | default 0x1C000000000000 |
5e785963 | 54 | |
347a8dc3 | 55 | config S390 |
61d48c2c | 56 | def_bool y |
129975e7 HC |
57 | # |
58 | # Note: keep this list sorted alphabetically | |
59 | # | |
60 | imply IMA_SECURE_AND_OR_TRUSTED_BOOT | |
12700c17 | 61 | select ALTERNATE_USER_ADDRESS_SPACE |
96c0a6a7 | 62 | select ARCH_32BIT_USTAT_F_TINODE |
23fefe11 | 63 | select ARCH_BINFMT_ELF_STATE |
708b1376 | 64 | select ARCH_CORRECT_STACKTRACE_ON_KRETPROBE |
91024b3c AK |
65 | select ARCH_ENABLE_MEMORY_HOTPLUG if SPARSEMEM |
66 | select ARCH_ENABLE_MEMORY_HOTREMOVE | |
cebc774f | 67 | select ARCH_ENABLE_SPLIT_PMD_PTLOCK if PGTABLE_LEVELS > 2 |
2792d84e | 68 | select ARCH_HAS_CURRENT_STACK_POINTER |
5f58bde7 | 69 | select ARCH_HAS_DEBUG_VIRTUAL |
399145f9 | 70 | select ARCH_HAS_DEBUG_VM_PGTABLE |
08c8e685 | 71 | select ARCH_HAS_DEBUG_WX |
21266be9 | 72 | select ARCH_HAS_DEVMEM_IS_ALLOWED |
2b68f6ca | 73 | select ARCH_HAS_ELF_RANDOMIZE |
129975e7 | 74 | select ARCH_HAS_FORCE_DMA_UNENCRYPTED |
79962038 | 75 | select ARCH_HAS_FORTIFY_SOURCE |
957e3fac | 76 | select ARCH_HAS_GCOV_PROFILE_ALL |
4eb0716e | 77 | select ARCH_HAS_GIGANTIC_PAGE |
907fa061 | 78 | select ARCH_HAS_KCOV |
e7615c92 | 79 | select ARCH_HAS_MEMBARRIER_SYNC_CORE |
0c9c1d56 | 80 | select ARCH_HAS_MEM_ENCRYPT |
85bf3785 | 81 | select ARCH_HAS_NMI_SAFE_THIS_CPU_OPS |
3010a5ea | 82 | select ARCH_HAS_PTE_SPECIAL |
129975e7 | 83 | select ARCH_HAS_SCALED_CPUTIME |
0490d6d7 | 84 | select ARCH_HAS_SET_DIRECT_MAP |
d2852a22 | 85 | select ARCH_HAS_SET_MEMORY |
ad21fc4f LA |
86 | select ARCH_HAS_STRICT_KERNEL_RWX |
87 | select ARCH_HAS_STRICT_MODULE_RWX | |
aa0d6e70 | 88 | select ARCH_HAS_SYSCALL_WRAPPER |
918327e9 | 89 | select ARCH_HAS_UBSAN |
4bff8cb5 | 90 | select ARCH_HAS_VDSO_DATA |
0e0d04a8 | 91 | select ARCH_HAVE_NMI_SAFE_CMPXCHG |
6beb0009 TG |
92 | select ARCH_INLINE_READ_LOCK |
93 | select ARCH_INLINE_READ_LOCK_BH | |
94 | select ARCH_INLINE_READ_LOCK_IRQ | |
95 | select ARCH_INLINE_READ_LOCK_IRQSAVE | |
0e0d04a8 | 96 | select ARCH_INLINE_READ_TRYLOCK |
6beb0009 TG |
97 | select ARCH_INLINE_READ_UNLOCK |
98 | select ARCH_INLINE_READ_UNLOCK_BH | |
99 | select ARCH_INLINE_READ_UNLOCK_IRQ | |
100 | select ARCH_INLINE_READ_UNLOCK_IRQRESTORE | |
0e0d04a8 HC |
101 | select ARCH_INLINE_SPIN_LOCK |
102 | select ARCH_INLINE_SPIN_LOCK_BH | |
103 | select ARCH_INLINE_SPIN_LOCK_IRQ | |
104 | select ARCH_INLINE_SPIN_LOCK_IRQSAVE | |
105 | select ARCH_INLINE_SPIN_TRYLOCK | |
106 | select ARCH_INLINE_SPIN_TRYLOCK_BH | |
107 | select ARCH_INLINE_SPIN_UNLOCK | |
108 | select ARCH_INLINE_SPIN_UNLOCK_BH | |
109 | select ARCH_INLINE_SPIN_UNLOCK_IRQ | |
110 | select ARCH_INLINE_SPIN_UNLOCK_IRQRESTORE | |
6beb0009 TG |
111 | select ARCH_INLINE_WRITE_LOCK |
112 | select ARCH_INLINE_WRITE_LOCK_BH | |
113 | select ARCH_INLINE_WRITE_LOCK_IRQ | |
114 | select ARCH_INLINE_WRITE_LOCK_IRQSAVE | |
0e0d04a8 | 115 | select ARCH_INLINE_WRITE_TRYLOCK |
6beb0009 TG |
116 | select ARCH_INLINE_WRITE_UNLOCK |
117 | select ARCH_INLINE_WRITE_UNLOCK_BH | |
118 | select ARCH_INLINE_WRITE_UNLOCK_IRQ | |
119 | select ARCH_INLINE_WRITE_UNLOCK_IRQRESTORE | |
9eda317c | 120 | select ARCH_MHP_MEMMAP_ON_MEMORY_ENABLE |
e991e5bb | 121 | select ARCH_STACKWALK |
36e7fdaa | 122 | select ARCH_SUPPORTS_ATOMIC_RMW |
5d6ad668 | 123 | select ARCH_SUPPORTS_DEBUG_PAGEALLOC |
bb9c14ad | 124 | select ARCH_SUPPORTS_HUGETLBFS |
fbac266f | 125 | select ARCH_SUPPORTS_INT128 if CC_HAS_INT128 && CC_IS_CLANG |
a763bc8b | 126 | select ARCH_SUPPORTS_NUMA_BALANCING |
e06f47a1 | 127 | select ARCH_SUPPORTS_PER_VMA_LOCK |
295d8fa9 | 128 | select ARCH_USE_BUILTIN_BSWAP |
efc1d23b | 129 | select ARCH_USE_CMPXCHG_LOCKREF |
ccf7c3fb | 130 | select ARCH_USE_SYM_ANNOTATIONS |
51c2ee6d | 131 | select ARCH_WANTS_NO_INSTR |
d2abfbe4 | 132 | select ARCH_WANT_DEFAULT_BPF_JIT |
6ca6b581 | 133 | select ARCH_WANT_IPC_PARSE_VERSION |
2f0584f3 | 134 | select ARCH_WANT_KERNEL_PMD_MKWRITE |
acb7c202 | 135 | select ARCH_WANT_LD_ORPHAN_WARN |
0b6f1582 | 136 | select ARCH_WANT_OPTIMIZE_HUGETLB_VMEMMAP |
10916706 | 137 | select BUILDTIME_TABLE_SORT |
0e0d04a8 | 138 | select CLONE_BACKWARDS2 |
802ba53e | 139 | select DCACHE_WORD_ACCESS if !KMSAN |
2f9237d4 | 140 | select DMA_OPS if PCI |
5d6a0163 | 141 | select DYNAMIC_FTRACE if FUNCTION_TRACER |
6ef55060 HC |
142 | select FUNCTION_ALIGNMENT_8B if CC_IS_GCC |
143 | select FUNCTION_ALIGNMENT_16B if !CC_IS_GCC | |
129975e7 | 144 | select GENERIC_ALLOCATOR |
8f00b3e2 | 145 | select GENERIC_CPU_AUTOPROBE |
d424986f | 146 | select GENERIC_CPU_VULNERABILITIES |
56e62a73 | 147 | select GENERIC_ENTRY |
4bff8cb5 | 148 | select GENERIC_GETTIMEOFDAY |
9d719d39 | 149 | select GENERIC_PTDUMP |
e80e7813 | 150 | select GENERIC_SMP_IDLE_THREAD |
79c74ecb | 151 | select GENERIC_TIME_VSYSCALL |
eeab78b0 | 152 | select GENERIC_VDSO_TIME_NS |
b43b3fff | 153 | select GENERIC_IOREMAP if PCI |
2a19be61 | 154 | select HAVE_ALIGNED_STRUCT_PAGE |
7a017721 | 155 | select HAVE_ARCH_AUDITSYSCALL |
5a79859a | 156 | select HAVE_ARCH_JUMP_LABEL |
13ddb52c | 157 | select HAVE_ARCH_JUMP_LABEL_RELATIVE |
42db5ed8 | 158 | select HAVE_ARCH_KASAN |
3e39ce26 | 159 | select HAVE_ARCH_KASAN_VMALLOC |
e37b3dd0 | 160 | select HAVE_ARCH_KCSAN |
e41ba111 | 161 | select HAVE_ARCH_KFENCE |
bae1cd36 | 162 | select HAVE_ARCH_RANDOMIZE_KSTACK_OFFSET |
c63cb468 | 163 | select HAVE_ARCH_SECCOMP_FILTER |
5614dd92 | 164 | select HAVE_ARCH_SOFT_DIRTY |
b94c0ebb | 165 | select HAVE_ARCH_STACKLEAK |
0e0d04a8 | 166 | select HAVE_ARCH_TRACEHOOK |
5a79859a | 167 | select HAVE_ARCH_TRANSPARENT_HUGEPAGE |
ce3dc447 | 168 | select HAVE_ARCH_VMAP_STACK |
2ff2b7ec | 169 | select HAVE_ASM_MODVERSIONS |
0e0d04a8 HC |
170 | select HAVE_CMPXCHG_DOUBLE |
171 | select HAVE_CMPXCHG_LOCAL | |
0e0d04a8 | 172 | select HAVE_DEBUG_KMEMLEAK |
e1231b0e | 173 | select HAVE_DMA_CONTIGUOUS |
5a79859a | 174 | select HAVE_DYNAMIC_FTRACE |
5740a7c7 | 175 | select HAVE_DYNAMIC_FTRACE_WITH_ARGS |
2ab3a0a9 | 176 | select HAVE_DYNAMIC_FTRACE_WITH_DIRECT_CALLS |
5a79859a | 177 | select HAVE_DYNAMIC_FTRACE_WITH_REGS |
42b01a55 | 178 | select HAVE_EBPF_JIT if HAVE_MARCH_Z196_FEATURES |
9078a549 | 179 | select HAVE_EFFICIENT_UNALIGNED_ACCESS |
25176ad0 | 180 | select HAVE_GUP_FAST |
d983c89c | 181 | select HAVE_FENTRY |
0e0d04a8 | 182 | select HAVE_FTRACE_MCOUNT_RECORD |
a30b5b03 | 183 | select HAVE_FUNCTION_ARG_ACCESS_API |
73d6eb48 | 184 | select HAVE_FUNCTION_ERROR_INJECTION |
1256e70a | 185 | select HAVE_FUNCTION_GRAPH_RETVAL |
5a79859a HC |
186 | select HAVE_FUNCTION_GRAPH_TRACER |
187 | select HAVE_FUNCTION_TRACER | |
bc00b3ec | 188 | select HAVE_GCC_PLUGINS |
4bff8cb5 | 189 | select HAVE_GENERIC_VDSO |
d460bb6c | 190 | select HAVE_IOREMAP_PROT if PCI |
0e0d04a8 HC |
191 | select HAVE_KERNEL_BZIP2 |
192 | select HAVE_KERNEL_GZIP | |
8e2872ce | 193 | select HAVE_KERNEL_LZ4 |
0e0d04a8 HC |
194 | select HAVE_KERNEL_LZMA |
195 | select HAVE_KERNEL_LZO | |
89b5202e | 196 | select HAVE_KERNEL_UNCOMPRESSED |
0e0d04a8 | 197 | select HAVE_KERNEL_XZ |
7b034d9c | 198 | select HAVE_KERNEL_ZSTD |
0e0d04a8 | 199 | select HAVE_KPROBES |
657480d9 | 200 | select HAVE_KPROBES_ON_FTRACE |
0e0d04a8 | 201 | select HAVE_KRETPROBES |
21042d43 | 202 | select HAVE_LIVEPATCH |
50be6345 | 203 | select HAVE_MEMBLOCK_PHYS_MAP |
786d35d4 | 204 | select HAVE_MOD_ARCH_SPECIFIC |
129975e7 | 205 | select HAVE_NMI |
d983c89c | 206 | select HAVE_NOP_MCOUNT |
5394f1e9 | 207 | select HAVE_PAGE_SIZE_4KB |
eb01d42a | 208 | select HAVE_PCI |
0e0d04a8 | 209 | select HAVE_PERF_EVENTS |
129975e7 HC |
210 | select HAVE_PERF_REGS |
211 | select HAVE_PERF_USER_STACK_DUMP | |
0e0d04a8 | 212 | select HAVE_REGS_AND_STACK_ACCESS_API |
aa137a6d | 213 | select HAVE_RELIABLE_STACKTRACE |
6ca6b581 | 214 | select HAVE_RETHOOK |
9d6d99e3 | 215 | select HAVE_RSEQ |
1254cfbc | 216 | select HAVE_SAMPLE_FTRACE_DIRECT |
890e3dc8 | 217 | select HAVE_SAMPLE_FTRACE_DIRECT_MULTI |
254b2fd0 | 218 | select HAVE_SETUP_PER_CPU_AREA |
cd1a41ce | 219 | select HAVE_SOFTIRQ_ON_OWN_STACK |
0e0d04a8 | 220 | select HAVE_SYSCALL_TRACEPOINTS |
0e0d04a8 | 221 | select HAVE_VIRT_CPU_ACCOUNTING |
2b91ec9f | 222 | select HAVE_VIRT_CPU_ACCOUNTING_IDLE |
eb01d42a CH |
223 | select IOMMU_HELPER if PCI |
224 | select IOMMU_SUPPORT if PCI | |
6ca6b581 | 225 | select MMU_GATHER_MERGE_VMAS |
129975e7 HC |
226 | select MMU_GATHER_NO_GATHER |
227 | select MMU_GATHER_RCU_TABLE_FREE | |
786d35d4 | 228 | select MODULES_USE_ELF_RELA |
eb01d42a | 229 | select NEED_DMA_MAP_STATE if PCI |
254b2fd0 | 230 | select NEED_PER_CPU_EMBED_FIRST_CHUNK |
eb01d42a | 231 | select NEED_SG_DMA_LENGTH if PCI |
7eddd99c | 232 | select OLD_SIGACTION |
93bead43 | 233 | select OLD_SIGSUSPEND3 |
2eac9c2d | 234 | select PCI_DOMAINS if PCI |
eb01d42a | 235 | select PCI_MSI if PCI |
981aa1d3 | 236 | select PCI_MSI_ARCH_FALLBACKS if PCI_MSI |
bb98f396 | 237 | select SPARSE_IRQ |
129975e7 | 238 | select SWIOTLB |
0e0d04a8 | 239 | select SYSCTL_EXCEPTION_TRACE |
d5c352cd | 240 | select THREAD_INFO_IN_TASK |
4aae683f | 241 | select TRACE_IRQFLAGS_SUPPORT |
0563416b | 242 | select TTY |
aa44433a | 243 | select USER_STACKTRACE_SUPPORT |
0e0d04a8 | 244 | select VIRT_CPU_ACCOUNTING |
63703f37 | 245 | select ZONE_DMA |
129975e7 | 246 | # Note: keep the above list sorted alphabetically |
1da177e4 | 247 | |
fca3e357 | 248 | config SCHED_OMIT_FRAME_POINTER |
6f9a3c33 | 249 | def_bool y |
fca3e357 | 250 | |
c81956c9 KS |
251 | config PGTABLE_LEVELS |
252 | int | |
1aea9b3f | 253 | default 5 |
c81956c9 | 254 | |
21042d43 JS |
255 | source "kernel/livepatch/Kconfig" |
256 | ||
75239cf7 ED |
257 | config ARCH_SUPPORTS_KEXEC |
258 | def_bool y | |
259 | ||
260 | config ARCH_SUPPORTS_KEXEC_FILE | |
c1ad12ee | 261 | def_bool y |
75239cf7 ED |
262 | |
263 | config ARCH_SUPPORTS_KEXEC_SIG | |
264 | def_bool MODULE_SIG_FORMAT | |
265 | ||
e6265fe7 | 266 | config ARCH_SUPPORTS_KEXEC_PURGATORY |
c1ad12ee | 267 | def_bool y |
75239cf7 ED |
268 | |
269 | config ARCH_SUPPORTS_CRASH_DUMP | |
270 | def_bool y | |
271 | help | |
d68b4b6f | 272 | Refer to <file:Documentation/arch/s390/zfcpdump.rst> for more details on this. |
75239cf7 | 273 | This option also enables s390 zfcpdump. |
d68b4b6f | 274 | See also <file:Documentation/arch/s390/zfcpdump.rst> |
75239cf7 | 275 | |
843c48fd JG |
276 | menu "Processor type and features" |
277 | ||
843c48fd JG |
278 | config HAVE_MARCH_Z10_FEATURES |
279 | def_bool n | |
843c48fd JG |
280 | |
281 | config HAVE_MARCH_Z196_FEATURES | |
282 | def_bool n | |
283 | select HAVE_MARCH_Z10_FEATURES | |
284 | ||
991c1505 HC |
285 | config HAVE_MARCH_ZEC12_FEATURES |
286 | def_bool n | |
287 | select HAVE_MARCH_Z196_FEATURES | |
288 | ||
f8b2dcbd MS |
289 | config HAVE_MARCH_Z13_FEATURES |
290 | def_bool n | |
291 | select HAVE_MARCH_ZEC12_FEATURES | |
292 | ||
6997c323 MS |
293 | config HAVE_MARCH_Z14_FEATURES |
294 | def_bool n | |
295 | select HAVE_MARCH_Z13_FEATURES | |
296 | ||
a0e22511 MS |
297 | config HAVE_MARCH_Z15_FEATURES |
298 | def_bool n | |
299 | select HAVE_MARCH_Z14_FEATURES | |
300 | ||
e69a7ff8 HC |
301 | config HAVE_MARCH_Z16_FEATURES |
302 | def_bool n | |
303 | select HAVE_MARCH_Z15_FEATURES | |
304 | ||
843c48fd JG |
305 | choice |
306 | prompt "Processor type" | |
7072276e | 307 | default MARCH_Z196 |
1da177e4 | 308 | |
843c48fd JG |
309 | config MARCH_Z10 |
310 | bool "IBM System z10" | |
5a79859a | 311 | select HAVE_MARCH_Z10_FEATURES |
5474080a | 312 | depends on $(cc-option,-march=z10) |
843c48fd | 313 | help |
4efd417f VG |
314 | Select this to enable optimizations for IBM System z10 (2097 and 2098 |
315 | series). This is the oldest machine generation currently supported. | |
843c48fd JG |
316 | |
317 | config MARCH_Z196 | |
318 | bool "IBM zEnterprise 114 and 196" | |
5a79859a | 319 | select HAVE_MARCH_Z196_FEATURES |
5474080a | 320 | depends on $(cc-option,-march=z196) |
843c48fd JG |
321 | help |
322 | Select this to enable optimizations for IBM zEnterprise 114 and 196 | |
323 | (2818 and 2817 series). The kernel will be slightly faster but will | |
324 | not work on older machines. | |
1da177e4 | 325 | |
991c1505 | 326 | config MARCH_ZEC12 |
59471227 | 327 | bool "IBM zBC12 and zEC12" |
5a79859a | 328 | select HAVE_MARCH_ZEC12_FEATURES |
5474080a | 329 | depends on $(cc-option,-march=zEC12) |
991c1505 | 330 | help |
59471227 HC |
331 | Select this to enable optimizations for IBM zBC12 and zEC12 (2828 and |
332 | 2827 series). The kernel will be slightly faster but will not work on | |
333 | older machines. | |
991c1505 | 334 | |
f8b2dcbd | 335 | config MARCH_Z13 |
bb3aa614 | 336 | bool "IBM z13s and z13" |
5a79859a | 337 | select HAVE_MARCH_Z13_FEATURES |
5474080a | 338 | depends on $(cc-option,-march=z13) |
f8b2dcbd | 339 | help |
bb3aa614 HC |
340 | Select this to enable optimizations for IBM z13s and z13 (2965 and |
341 | 2964 series). The kernel will be slightly faster but will not work on | |
342 | older machines. | |
f8b2dcbd | 343 | |
6997c323 | 344 | config MARCH_Z14 |
451239eb | 345 | bool "IBM z14 ZR1 and z14" |
6997c323 | 346 | select HAVE_MARCH_Z14_FEATURES |
5474080a | 347 | depends on $(cc-option,-march=z14) |
6997c323 | 348 | help |
451239eb HC |
349 | Select this to enable optimizations for IBM z14 ZR1 and z14 (3907 |
350 | and 3906 series). The kernel will be slightly faster but will not | |
351 | work on older machines. | |
6997c323 | 352 | |
a0e22511 MS |
353 | config MARCH_Z15 |
354 | bool "IBM z15" | |
355 | select HAVE_MARCH_Z15_FEATURES | |
5474080a | 356 | depends on $(cc-option,-march=z15) |
a0e22511 MS |
357 | help |
358 | Select this to enable optimizations for IBM z15 (8562 | |
359 | and 8561 series). The kernel will be slightly faster but will not | |
360 | work on older machines. | |
361 | ||
e69a7ff8 HC |
362 | config MARCH_Z16 |
363 | bool "IBM z16" | |
364 | select HAVE_MARCH_Z16_FEATURES | |
365 | depends on $(cc-option,-march=z16) | |
366 | help | |
367 | Select this to enable optimizations for IBM z16 (3931 and | |
368 | 3932 series). | |
369 | ||
843c48fd | 370 | endchoice |
1da177e4 | 371 | |
1db9e051 HC |
372 | config MARCH_Z10_TUNE |
373 | def_bool TUNE_Z10 || MARCH_Z10 && TUNE_DEFAULT | |
374 | ||
375 | config MARCH_Z196_TUNE | |
376 | def_bool TUNE_Z196 || MARCH_Z196 && TUNE_DEFAULT | |
377 | ||
378 | config MARCH_ZEC12_TUNE | |
379 | def_bool TUNE_ZEC12 || MARCH_ZEC12 && TUNE_DEFAULT | |
380 | ||
f8b2dcbd MS |
381 | config MARCH_Z13_TUNE |
382 | def_bool TUNE_Z13 || MARCH_Z13 && TUNE_DEFAULT | |
383 | ||
6997c323 MS |
384 | config MARCH_Z14_TUNE |
385 | def_bool TUNE_Z14 || MARCH_Z14 && TUNE_DEFAULT | |
386 | ||
a0e22511 MS |
387 | config MARCH_Z15_TUNE |
388 | def_bool TUNE_Z15 || MARCH_Z15 && TUNE_DEFAULT | |
389 | ||
e69a7ff8 HC |
390 | config MARCH_Z16_TUNE |
391 | def_bool TUNE_Z16 || MARCH_Z16 && TUNE_DEFAULT | |
392 | ||
1db9e051 HC |
393 | choice |
394 | prompt "Tune code generation" | |
395 | default TUNE_DEFAULT | |
396 | help | |
397 | Cause the compiler to tune (-mtune) the generated code for a machine. | |
398 | This will make the code run faster on the selected machine but | |
399 | somewhat slower on other machines. | |
400 | This option only changes how the compiler emits instructions, not the | |
401 | selection of instructions itself, so the resulting kernel will run on | |
402 | all other machines. | |
403 | ||
404 | config TUNE_DEFAULT | |
405 | bool "Default" | |
406 | help | |
407 | Tune the generated code for the target processor for which the kernel | |
408 | will be compiled. | |
409 | ||
1db9e051 HC |
410 | config TUNE_Z10 |
411 | bool "IBM System z10" | |
412 | ||
413 | config TUNE_Z196 | |
414 | bool "IBM zEnterprise 114 and 196" | |
5474080a | 415 | depends on $(cc-option,-mtune=z196) |
1db9e051 HC |
416 | |
417 | config TUNE_ZEC12 | |
418 | bool "IBM zBC12 and zEC12" | |
5474080a | 419 | depends on $(cc-option,-mtune=zEC12) |
1db9e051 | 420 | |
f8b2dcbd | 421 | config TUNE_Z13 |
89d0180a | 422 | bool "IBM z13s and z13" |
5474080a | 423 | depends on $(cc-option,-mtune=z13) |
f8b2dcbd | 424 | |
6997c323 | 425 | config TUNE_Z14 |
89d0180a | 426 | bool "IBM z14 ZR1 and z14" |
5474080a | 427 | depends on $(cc-option,-mtune=z14) |
6997c323 | 428 | |
a0e22511 MS |
429 | config TUNE_Z15 |
430 | bool "IBM z15" | |
5474080a | 431 | depends on $(cc-option,-mtune=z15) |
a0e22511 | 432 | |
e69a7ff8 HC |
433 | config TUNE_Z16 |
434 | bool "IBM z16" | |
435 | depends on $(cc-option,-mtune=z16) | |
436 | ||
1db9e051 HC |
437 | endchoice |
438 | ||
347a8dc3 | 439 | config 64BIT |
6f9a3c33 | 440 | def_bool y |
d9f7a745 | 441 | |
622021cd SS |
442 | config COMMAND_LINE_SIZE |
443 | int "Maximum size of kernel command line" | |
444 | default 4096 | |
445 | range 896 1048576 | |
446 | help | |
447 | This allows you to specify the maximum length of the kernel command | |
448 | line. | |
449 | ||
843c48fd | 450 | config COMPAT |
77ed045e | 451 | def_bool n |
843c48fd | 452 | prompt "Kernel support for 31 bit emulation" |
843c48fd | 453 | select ARCH_WANT_OLD_COMPAT_IPC |
7eddd99c | 454 | select COMPAT_OLD_SIGACTION |
fef747ba | 455 | select HAVE_UID16 |
2813893f | 456 | depends on MULTIUSER |
b20ea29a | 457 | depends on !CC_IS_CLANG && !LD_IS_LLD |
843c48fd JG |
458 | help |
459 | Select this option if you want to enable your system kernel to | |
460 | handle system-calls from ELF binaries for 31 bit ESA. This option | |
461 | (and some other stuff like libraries and such) is needed for | |
77ed045e HC |
462 | executing 31 bit applications. |
463 | ||
464 | If unsure say N. | |
843c48fd | 465 | |
1da177e4 | 466 | config SMP |
6f9a3c33 | 467 | def_bool y |
1da177e4 LT |
468 | |
469 | config NR_CPUS | |
5c75a0da HC |
470 | int "Maximum number of CPUs (2-512)" |
471 | range 2 512 | |
5a79859a | 472 | default "64" |
1da177e4 LT |
473 | help |
474 | This allows you to specify the maximum number of CPUs which this | |
5c75a0da | 475 | kernel will support. The maximum supported value is 512 and the |
1da177e4 LT |
476 | minimum value which makes sense is 2. |
477 | ||
478 | This is purely to save memory - each supported CPU adds | |
479 | approximately sixteen kilobytes to the kernel image. | |
480 | ||
481 | config HOTPLUG_CPU | |
6f9a3c33 | 482 | def_bool y |
1da177e4 | 483 | |
3a368f74 PH |
484 | config NUMA |
485 | bool "NUMA support" | |
67626fad | 486 | depends on SCHED_TOPOLOGY |
3a368f74 PH |
487 | default n |
488 | help | |
489 | Enable NUMA support | |
490 | ||
491 | This option adds NUMA support to the kernel. | |
492 | ||
3a368f74 | 493 | config NODES_SHIFT |
701dc81e | 494 | int |
a9ee6cf5 | 495 | depends on NUMA |
701dc81e | 496 | default "1" |
9236b4dd HC |
497 | |
498 | config SCHED_SMT | |
499 | def_bool n | |
c29a7baf | 500 | |
8d11e021 | 501 | config SCHED_MC |
83a24e32 | 502 | def_bool n |
8d11e021 | 503 | |
10ad34bc | 504 | config SCHED_TOPOLOGY |
6f9a3c33 | 505 | def_bool y |
10ad34bc | 506 | prompt "Topology scheduler support" |
10ad34bc | 507 | select SCHED_SMT |
83a24e32 | 508 | select SCHED_MC |
4cb14bc8 | 509 | help |
10ad34bc MS |
510 | Topology scheduler support improves the CPU scheduler's decision |
511 | making when dealing with machines that have multi-threading, | |
512 | multiple cores or multiple books. | |
4cb14bc8 | 513 | |
8636a1f9 | 514 | source "kernel/Kconfig.hz" |
1da177e4 | 515 | |
8cf57d72 AE |
516 | config CERT_STORE |
517 | bool "Get user certificates via DIAG320" | |
518 | depends on KEYS | |
481daa50 | 519 | select CRYPTO_LIB_SHA256 |
8cf57d72 AE |
520 | help |
521 | Enable this option if you want to access user-provided secure boot | |
522 | certificates via DIAG 0x320. | |
523 | ||
524 | These certificates will be made available via the keyring named | |
525 | 'cert_store'. | |
526 | ||
d768bd89 MS |
527 | config KERNEL_NOBP |
528 | def_bool n | |
529 | prompt "Enable modified branch prediction for the kernel by default" | |
530 | help | |
531 | If this option is selected the kernel will switch to a modified | |
532 | branch prediction mode if the firmware interface is available. | |
533 | The modified branch prediction mode improves the behaviour in | |
534 | regard to speculative execution. | |
535 | ||
536 | With the option enabled the kernel parameter "nobp=0" or "nospec" | |
537 | can be used to run the kernel in the normal branch prediction mode. | |
538 | ||
539 | With the option disabled the modified branch prediction mode is | |
540 | enabled with the "nobp=1" kernel parameter. | |
541 | ||
542 | If unsure, say N. | |
543 | ||
f19fbd5e MS |
544 | config EXPOLINE |
545 | def_bool n | |
1d2ad084 | 546 | depends on $(cc-option,-mindirect-branch=thunk) |
f19fbd5e MS |
547 | prompt "Avoid speculative indirect branches in the kernel" |
548 | help | |
549 | Compile the kernel with the expoline compiler options to guard | |
550 | against kernel-to-user data leaks by avoiding speculative indirect | |
551 | branches. | |
552 | Requires a compiler with -mindirect-branch=thunk support for full | |
553 | protection. The kernel may run slower. | |
554 | ||
555 | If unsure, say N. | |
556 | ||
1d2ad084 | 557 | config EXPOLINE_EXTERN |
ba05b39d | 558 | def_bool y if EXPOLINE |
1d2ad084 | 559 | depends on EXPOLINE |
1d2ad084 VG |
560 | depends on CC_IS_GCC && GCC_VERSION >= 110200 |
561 | depends on $(success,$(srctree)/arch/s390/tools/gcc-thunk-extern.sh $(CC)) | |
562 | prompt "Generate expolines as extern functions." | |
563 | help | |
564 | This option is required for some tooling like kpatch. The kernel is | |
565 | compiled with -mindirect-branch=thunk-extern and requires a newer | |
566 | compiler. | |
567 | ||
568 | If unsure, say N. | |
f19fbd5e MS |
569 | |
570 | choice | |
571 | prompt "Expoline default" | |
572 | depends on EXPOLINE | |
573 | default EXPOLINE_FULL | |
574 | ||
575 | config EXPOLINE_OFF | |
576 | bool "spectre_v2=off" | |
577 | ||
6e179d64 | 578 | config EXPOLINE_AUTO |
f19fbd5e MS |
579 | bool "spectre_v2=auto" |
580 | ||
581 | config EXPOLINE_FULL | |
582 | bool "spectre_v2=on" | |
583 | ||
584 | endchoice | |
585 | ||
805bc0bc | 586 | config RELOCATABLE |
80ddf5ce | 587 | def_bool y |
805bc0bc GS |
588 | help |
589 | This builds a kernel image that retains relocation information | |
590 | so it can be loaded at an arbitrary address. | |
805bc0bc GS |
591 | The relocations make the kernel image about 15% larger (compressed |
592 | 10%), but are discarded at runtime. | |
80ddf5ce HC |
593 | Note: this option exists only for documentation purposes, please do |
594 | not remove it. | |
805bc0bc | 595 | |
b2d24b97 GS |
596 | config RANDOMIZE_BASE |
597 | bool "Randomize the address of the kernel image (KASLR)" | |
b2d24b97 GS |
598 | default y |
599 | help | |
600 | In support of Kernel Address Space Layout Randomization (KASLR), | |
601 | this randomizes the address at which the kernel image is loaded, | |
602 | as a security feature that deters exploit attempts relying on | |
603 | knowledge of the location of kernel internals. | |
604 | ||
54f2ecc3 AG |
605 | config KERNEL_IMAGE_BASE |
606 | hex "Kernel image base address" | |
607 | range 0x100000 0x1FFFFFE0000000 if !KASAN | |
608 | range 0x100000 0x1BFFFFE0000000 if KASAN | |
609 | default 0x3FFE0000000 if !KASAN | |
610 | default 0x7FFFE0000000 if KASAN | |
611 | help | |
612 | This is the address at which the kernel image is loaded in case | |
613 | Kernel Address Space Layout Randomization (KASLR) is disabled. | |
614 | ||
615 | In case the Protected virtualization guest support is enabled the | |
616 | Ultravisor imposes a virtual address limit. If the value of this | |
617 | option leads to the kernel image exceeding the Ultravisor limit, | |
618 | this option is ignored and the image is loaded below the limit. | |
619 | ||
620 | If the value of this option leads to the kernel image overlapping | |
621 | the virtual memory where other data structures are located, this | |
622 | option is ignored and the image is loaded above the structures. | |
623 | ||
843c48fd | 624 | endmenu |
1da177e4 | 625 | |
843c48fd | 626 | menu "Memory setup" |
1d057720 | 627 | |
843c48fd | 628 | config ARCH_SPARSEMEM_ENABLE |
6f9a3c33 | 629 | def_bool y |
843c48fd JG |
630 | select SPARSEMEM_VMEMMAP_ENABLE |
631 | select SPARSEMEM_VMEMMAP | |
e65e1fc2 | 632 | |
843c48fd JG |
633 | config ARCH_SPARSEMEM_DEFAULT |
634 | def_bool y | |
1da177e4 | 635 | |
b8402b95 HC |
636 | config MAX_PHYSMEM_BITS |
637 | int "Maximum size of supported physical memory in bits (42-53)" | |
638 | range 42 53 | |
639 | default "46" | |
640 | help | |
641 | This option specifies the maximum supported size of physical memory | |
642 | in bits. Supported is any size between 2^42 (4TB) and 2^53 (8PB). | |
643 | Increasing the number of bits also increases the kernel image size. | |
644 | By default 46 bits (64TB) are supported. | |
645 | ||
1da177e4 | 646 | config CHECK_STACK |
6f9a3c33 | 647 | def_bool y |
ce3dc447 | 648 | depends on !VMAP_STACK |
6f9a3c33 | 649 | prompt "Detect kernel stack overflow" |
1da177e4 LT |
650 | help |
651 | This option enables the compiler option -mstack-guard and | |
652 | -mstack-size if they are available. If the compiler supports them | |
653 | it will emit additional code to each function prolog to trigger | |
654 | an illegal operation if the kernel stack is about to overflow. | |
655 | ||
656 | Say N if you are unsure. | |
657 | ||
658 | config STACK_GUARD | |
659 | int "Size of the guard area (128-1024)" | |
660 | range 128 1024 | |
661 | depends on CHECK_STACK | |
662 | default "256" | |
663 | help | |
664 | This allows you to specify the size of the guard area at the lower | |
665 | end of the kernel stack. If the kernel stack points into the guard | |
666 | area on function entry an illegal operation is triggered. The size | |
667 | needs to be a power of 2. Please keep in mind that the size of an | |
668 | interrupt frame is 184 bytes for 31 bit and 328 bytes on 64 bit. | |
669 | The minimum size for the stack guard should be 256 for 31 bit and | |
670 | 512 for 64 bit. | |
671 | ||
843c48fd | 672 | endmenu |
3f22ab27 | 673 | |
843c48fd | 674 | menu "I/O subsystem" |
1da177e4 | 675 | |
1da177e4 | 676 | config QDIO |
6f9a3c33 MS |
677 | def_tristate y |
678 | prompt "QDIO support" | |
a7f7f624 | 679 | help |
8129ee16 | 680 | This driver provides the Queued Direct I/O base support for |
efca13bc | 681 | IBM System z. |
1da177e4 LT |
682 | |
683 | To compile this driver as a module, choose M here: the | |
684 | module will be called qdio. | |
685 | ||
686 | If unsure, say Y. | |
687 | ||
c8717a3d JG |
688 | if PCI |
689 | ||
690 | config PCI_NR_FUNCTIONS | |
691 | int "Maximum number of PCI functions (1-4096)" | |
692 | range 1 4096 | |
10e59217 | 693 | default "512" |
c8717a3d JG |
694 | help |
695 | This allows you to specify the maximum number of PCI functions which | |
696 | this kernel will support. | |
697 | ||
8b96d971 | 698 | endif # PCI |
c8717a3d | 699 | |
c8717a3d JG |
700 | config HAS_IOMEM |
701 | def_bool PCI | |
702 | ||
9d92a7e1 | 703 | config CHSC_SCH |
d9c11b1e | 704 | def_tristate m |
6f9a3c33 | 705 | prompt "Support for CHSC subchannels" |
9d92a7e1 CH |
706 | help |
707 | This driver allows usage of CHSC subchannels. A CHSC subchannel | |
708 | is usually present on LPAR only. | |
709 | The driver creates a device /dev/chsc, which may be used to | |
710 | obtain I/O configuration information about the machine and | |
711 | to issue asynchronous chsc commands (DANGEROUS). | |
712 | You will usually only want to use this interface on a special | |
713 | LPAR designated for system management. | |
714 | ||
715 | To compile this driver as a module, choose M here: the | |
716 | module will be called chsc_sch. | |
717 | ||
718 | If unsure, say N. | |
719 | ||
1d1c8f78 SO |
720 | config SCM_BUS |
721 | def_bool y | |
1d1c8f78 SO |
722 | prompt "SCM bus driver" |
723 | help | |
724 | Bus driver for Storage Class Memory. | |
725 | ||
eadb86ab SO |
726 | config EADM_SCH |
727 | def_tristate m | |
728 | prompt "Support for EADM subchannels" | |
729 | depends on SCM_BUS | |
730 | help | |
731 | This driver allows usage of EADM subchannels. EADM subchannels act | |
732 | as a communication vehicle for SCM increments. | |
733 | ||
734 | To compile this driver as a module, choose M here: the | |
735 | module will be called eadm_sch. | |
736 | ||
12376084 HD |
737 | config AP |
738 | def_tristate y | |
739 | prompt "Support for Adjunct Processors (ap)" | |
740 | help | |
741 | This driver allows usage to Adjunct Processor (AP) devices via | |
742 | the ap bus, cards and queues. Supported Adjunct Processors are | |
743 | the CryptoExpress Cards (CEX). | |
744 | ||
745 | To compile this driver as a module, choose M here: the | |
746 | module will be called ap. | |
747 | ||
748 | If unsure, say Y (default). | |
749 | ||
b3840c8b HD |
750 | config AP_DEBUG |
751 | def_bool n | |
752 | prompt "Enable debug features for Adjunct Processor (ap) devices" | |
753 | depends on AP | |
754 | help | |
755 | Say 'Y' here to enable some additional debug features for Adjunct | |
756 | Processor (ap) devices. | |
757 | ||
758 | There will be some more sysfs attributes displayed for ap queues. | |
759 | ||
760 | Do not enable on production level kernel build. | |
761 | ||
762 | If unsure, say N. | |
763 | ||
63f1934d DJS |
764 | config VFIO_CCW |
765 | def_tristate n | |
766 | prompt "Support for VFIO-CCW subchannels" | |
de858a05 | 767 | depends on VFIO |
8bf8c5ee | 768 | select VFIO_MDEV |
63f1934d DJS |
769 | help |
770 | This driver allows usage of I/O subchannels via VFIO-CCW. | |
771 | ||
772 | To compile this driver as a module, choose M here: the | |
773 | module will be called vfio_ccw. | |
774 | ||
1fde5734 TK |
775 | config VFIO_AP |
776 | def_tristate n | |
777 | prompt "VFIO support for AP devices" | |
0f1cbf94 | 778 | depends on KVM |
de858a05 | 779 | depends on VFIO |
12376084 | 780 | depends on AP |
de858a05 | 781 | select VFIO_MDEV |
1fde5734 | 782 | help |
4d1f2e45 JH |
783 | This driver grants access to Adjunct Processor (AP) devices |
784 | via the VFIO mediated device interface. | |
1fde5734 | 785 | |
4d1f2e45 JH |
786 | To compile this driver as a module, choose M here: the module |
787 | will be called vfio_ap. | |
1fde5734 | 788 | |
843c48fd JG |
789 | endmenu |
790 | ||
843c48fd JG |
791 | config CCW |
792 | def_bool y | |
793 | ||
b6ef86e9 UB |
794 | config HAVE_PNETID |
795 | tristate | |
796 | default (SMC || CCWGROUP) | |
797 | ||
843c48fd | 798 | menu "Virtualization" |
684de39b | 799 | |
5abb9351 VG |
800 | config PROTECTED_VIRTUALIZATION_GUEST |
801 | def_bool n | |
802 | prompt "Protected virtualization guest support" | |
803 | help | |
804 | Select this option, if you want to be able to run this | |
805 | kernel as a protected virtualization KVM guest. | |
806 | Protected virtualization capable machines have a mini hypervisor | |
807 | located at machine level (an ultravisor). With help of the | |
808 | Ultravisor, KVM will be able to run "protected" VMs, special | |
809 | VMs whose memory and management data are unavailable to KVM. | |
810 | ||
1da177e4 | 811 | config PFAULT |
6f9a3c33 MS |
812 | def_bool y |
813 | prompt "Pseudo page fault support" | |
1da177e4 LT |
814 | help |
815 | Select this option, if you want to use PFAULT pseudo page fault | |
816 | handling under VM. If running native or in LPAR, this option | |
817 | has no effect. If your VM does not support PFAULT, PAGEEX | |
818 | pseudo page fault handling will be used. | |
819 | Note that VM 4.2 supports PFAULT but has a bug in its | |
820 | implementation that causes some problems. | |
821 | Everybody who wants to run Linux under VM != VM4.2 should select | |
822 | this option. | |
823 | ||
1da177e4 | 824 | config CMM |
6f9a3c33 MS |
825 | def_tristate n |
826 | prompt "Cooperative memory management" | |
1da177e4 LT |
827 | help |
828 | Select this option, if you want to enable the kernel interface | |
829 | to reduce the memory size of the system. This is accomplished | |
830 | by allocating pages of memory and put them "on hold". This only | |
831 | makes sense for a system running under VM where the unused pages | |
832 | will be reused by VM for other guest systems. The interface | |
833 | allows an external monitor to balance memory of many systems. | |
834 | Everybody who wants to run Linux under VM should select this | |
835 | option. | |
836 | ||
1da177e4 | 837 | config CMM_IUCV |
6f9a3c33 MS |
838 | def_bool y |
839 | prompt "IUCV special message interface to cooperative memory management" | |
1da177e4 LT |
840 | depends on CMM && (SMSGIUCV=y || CMM=SMSGIUCV) |
841 | help | |
842 | Select this option to enable the special message interface to | |
843 | the cooperative memory management. | |
844 | ||
1da177e4 | 845 | config APPLDATA_BASE |
6f9a3c33 MS |
846 | def_bool n |
847 | prompt "Linux - VM Monitor Stream, base infrastructure" | |
5d3516b3 | 848 | depends on PROC_SYSCTL |
1da177e4 LT |
849 | help |
850 | This provides a kernel interface for creating and updating z/VM APPLDATA | |
851 | monitor records. The monitor records are updated at certain time | |
852 | intervals, once the timer is started. | |
853 | Writing 1 or 0 to /proc/appldata/timer starts(1) or stops(0) the timer, | |
854 | i.e. enables or disables monitoring on the Linux side. | |
855 | A custom interval value (in seconds) can be written to | |
856 | /proc/appldata/interval. | |
857 | ||
858 | Defaults are 60 seconds interval and timer off. | |
859 | The /proc entries can also be read from, showing the current settings. | |
860 | ||
861 | config APPLDATA_MEM | |
6f9a3c33 MS |
862 | def_tristate m |
863 | prompt "Monitor memory management statistics" | |
62fb2ba3 | 864 | depends on APPLDATA_BASE && VM_EVENT_COUNTERS |
1da177e4 LT |
865 | help |
866 | This provides memory management related data to the Linux - VM Monitor | |
867 | Stream, like paging/swapping rate, memory utilisation, etc. | |
868 | Writing 1 or 0 to /proc/appldata/memory creates(1) or removes(0) a z/VM | |
869 | APPLDATA monitor record, i.e. enables or disables monitoring this record | |
870 | on the z/VM side. | |
871 | ||
872 | Default is disabled. | |
873 | The /proc entry can also be read from, showing the current settings. | |
874 | ||
875 | This can also be compiled as a module, which will be called | |
876 | appldata_mem.o. | |
877 | ||
878 | config APPLDATA_OS | |
6f9a3c33 MS |
879 | def_tristate m |
880 | prompt "Monitor OS statistics" | |
1da177e4 LT |
881 | depends on APPLDATA_BASE |
882 | help | |
883 | This provides OS related data to the Linux - VM Monitor Stream, like | |
884 | CPU utilisation, etc. | |
885 | Writing 1 or 0 to /proc/appldata/os creates(1) or removes(0) a z/VM | |
886 | APPLDATA monitor record, i.e. enables or disables monitoring this record | |
887 | on the z/VM side. | |
888 | ||
889 | Default is disabled. | |
890 | This can also be compiled as a module, which will be called | |
891 | appldata_os.o. | |
892 | ||
893 | config APPLDATA_NET_SUM | |
6f9a3c33 MS |
894 | def_tristate m |
895 | prompt "Monitor overall network statistics" | |
70193af9 | 896 | depends on APPLDATA_BASE && NET |
1da177e4 LT |
897 | help |
898 | This provides network related data to the Linux - VM Monitor Stream, | |
899 | currently there is only a total sum of network I/O statistics, no | |
900 | per-interface data. | |
901 | Writing 1 or 0 to /proc/appldata/net_sum creates(1) or removes(0) a z/VM | |
902 | APPLDATA monitor record, i.e. enables or disables monitoring this record | |
903 | on the z/VM side. | |
904 | ||
905 | Default is disabled. | |
906 | This can also be compiled as a module, which will be called | |
907 | appldata_net_sum.o. | |
908 | ||
3325b4d8 | 909 | config S390_HYPFS |
6f9a3c33 | 910 | def_bool y |
3325b4d8 HC |
911 | prompt "s390 hypervisor information" |
912 | help | |
913 | This provides several binary files at (debugfs)/s390_hypfs/ to | |
914 | provide accounting information in an s390 hypervisor environment. | |
915 | ||
916 | config S390_HYPFS_FS | |
917 | def_bool n | |
6f9a3c33 | 918 | prompt "s390 hypervisor file system support" |
24bbb1fa | 919 | select SYS_HYPERVISOR |
3325b4d8 | 920 | depends on S390_HYPFS |
24bbb1fa MH |
921 | help |
922 | This is a virtual file system intended to provide accounting | |
3325b4d8 HC |
923 | information in an s390 hypervisor environment. This file system |
924 | is deprecated and should not be used. | |
925 | ||
926 | Say N if you are unsure. | |
24bbb1fa | 927 | |
843c48fd | 928 | source "arch/s390/kvm/Kconfig" |
411ed322 | 929 | |
fa587743 | 930 | config S390_GUEST |
6f9a3c33 | 931 | def_bool y |
510cf5a6 | 932 | prompt "s390 support for virtio devices" |
79b6f7fb | 933 | select TTY |
80629b0b | 934 | select VIRTUALIZATION |
fa587743 | 935 | select VIRTIO |
fa587743 | 936 | help |
bdd1fc27 CH |
937 | Enabling this option adds support for virtio based paravirtual device |
938 | drivers on s390. | |
1da177e4 | 939 | |
20766c08 | 940 | Select this option if you want to run the kernel as a guest under |
bdd1fc27 | 941 | the KVM hypervisor. |
155af2f9 HJP |
942 | |
943 | endmenu | |
badbf397 | 944 | |
90c53187 IL |
945 | config S390_MODULES_SANITY_TEST_HELPERS |
946 | def_bool n | |
947 | ||
badbf397 IL |
948 | menu "Selftests" |
949 | ||
950 | config S390_UNWIND_SELFTEST | |
951 | def_tristate n | |
25d36a85 MD |
952 | depends on KUNIT |
953 | default KUNIT_ALL_TESTS | |
badbf397 IL |
954 | prompt "Test unwind functions" |
955 | help | |
956 | This option enables s390 specific stack unwinder testing kernel | |
957 | module. This option is not useful for distributions or general | |
958 | kernels, but only for kernel developers working on architecture code. | |
959 | ||
960 | Say N if you are unsure. | |
961 | ||
d340d28a SS |
962 | config S390_KPROBES_SANITY_TEST |
963 | def_tristate n | |
964 | prompt "Enable s390 specific kprobes tests" | |
965 | depends on KPROBES | |
966 | depends on KUNIT | |
967 | help | |
968 | This option enables an s390 specific kprobes test module. This option | |
969 | is not useful for distributions or general kernels, but only for kernel | |
970 | developers working on architecture code. | |
971 | ||
972 | Say N if you are unsure. | |
973 | ||
90c53187 IL |
974 | config S390_MODULES_SANITY_TEST |
975 | def_tristate n | |
976 | depends on KUNIT | |
977 | default KUNIT_ALL_TESTS | |
978 | prompt "Enable s390 specific modules tests" | |
979 | select S390_MODULES_SANITY_TEST_HELPERS | |
980 | help | |
981 | This option enables an s390 specific modules test. This option is | |
982 | not useful for distributions or general kernels, but only for | |
983 | kernel developers working on architecture code. | |
984 | ||
985 | Say N if you are unsure. | |
badbf397 | 986 | endmenu |