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TOMOYO Linux Cross Reference
Linux/arch/s390/Kconfig

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Diff markup

Differences between /arch/s390/Kconfig (Version linux-6.12-rc7) and /arch/alpha/Kconfig (Version linux-5.16.20)


  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           !!   6         select ARCH_MIGHT_HAVE_PC_PARPORT
 64         select ARCH_CORRECT_STACKTRACE_ON_KRET !!   7         select ARCH_MIGHT_HAVE_PC_SERIO
 65         select ARCH_ENABLE_MEMORY_HOTPLUG if S !!   8         select ARCH_NO_PREEMPT
 66         select ARCH_ENABLE_MEMORY_HOTREMOVE    !!   9         select ARCH_NO_SG_CHAIN
 67         select ARCH_ENABLE_SPLIT_PMD_PTLOCK if << 
 68         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         << 
 74         select ARCH_HAS_ELF_RANDOMIZE          << 
 75         select ARCH_HAS_FORCE_DMA_UNENCRYPTED  << 
 76         select ARCH_HAS_FORTIFY_SOURCE         << 
 77         select ARCH_HAS_GCOV_PROFILE_ALL       << 
 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            10         select ARCH_USE_CMPXCHG_LOCKREF
131         select ARCH_USE_SYM_ANNOTATIONS        !!  11         select DMA_OPS if PCI
132         select ARCH_WANTS_NO_INSTR             !!  12         select FORCE_PCI if !ALPHA_JENSEN
133         select ARCH_WANT_DEFAULT_BPF_JIT       !!  13         select PCI_DOMAINS if PCI
                                                   >>  14         select PCI_SYSCALL if PCI
                                                   >>  15         select HAVE_AOUT
                                                   >>  16         select HAVE_ASM_MODVERSIONS
                                                   >>  17         select HAVE_PCSPKR_PLATFORM
                                                   >>  18         select HAVE_PERF_EVENTS
                                                   >>  19         select NEED_DMA_MAP_STATE
                                                   >>  20         select NEED_SG_DMA_LENGTH
                                                   >>  21         select VIRT_TO_BUS
                                                   >>  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           << 
153         select GENERIC_VDSO_TIME_NS            << 
154         select GENERIC_IOREMAP if PCI          << 
155         select HAVE_ALIGNED_STRUCT_PAGE        << 
156         select HAVE_ARCH_AUDITSYSCALL              31         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              32         select HAVE_MOD_ARCH_SPECIFIC
207         select HAVE_NMI                        << 
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                33         select MODULES_USE_ELF_RELA
231         select NEED_DMA_MAP_STATE       if PCI !!  34         select ODD_RT_SIGACTION
232         select NEED_PER_CPU_EMBED_FIRST_CHUNK  !!  35         select OLD_SIGSUSPEND
233         select NEED_SG_DMA_LENGTH       if PCI !!  36         select CPU_NO_EFFICIENT_FFS if !ALPHA_EV67
234         select OLD_SIGACTION                   !!  37         select MMU_GATHER_NO_RANGE
235         select OLD_SIGSUSPEND3                 !!  38         select SET_FS
236         select PCI_DOMAINS              if PCI !!  39         select SPARSEMEM_EXTREME if SPARSEMEM
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                            40         select ZONE_DMA
249         # Note: keep the above list sorted alp !!  41         help
                                                   >>  42           The Alpha is a 64-bit general-purpose processor designed and
                                                   >>  43           marketed by the Digital Equipment Corporation of blessed memory,
                                                   >>  44           now Hewlett-Packard.  The Alpha Linux project has a home page at
                                                   >>  45           <http://www.alphalinux.org/>.
250                                                    46 
251 config SCHED_OMIT_FRAME_POINTER                !!  47 config 64BIT
252         def_bool y                                 48         def_bool y
253                                                    49 
254 config PGTABLE_LEVELS                          !!  50 config MMU
255         int                                    !!  51         bool
256         default 5                              !!  52         default y
257                                                    53 
258 source "kernel/livepatch/Kconfig"              !!  54 config ARCH_HAS_ILOG2_U32
                                                   >>  55         bool
                                                   >>  56         default n
259                                                    57 
260 config ARCH_SUPPORTS_KEXEC                     !!  58 config ARCH_HAS_ILOG2_U64
261         def_bool y                             !!  59         bool
                                                   >>  60         default n
262                                                    61 
263 config ARCH_SUPPORTS_KEXEC_FILE                !!  62 config GENERIC_CALIBRATE_DELAY
264         def_bool y                             !!  63         bool
                                                   >>  64         default y
265                                                    65 
266 config ARCH_SUPPORTS_KEXEC_SIG                 !!  66 config GENERIC_ISA_DMA
267         def_bool MODULE_SIG_FORMAT             !!  67         bool
                                                   >>  68         default y
268                                                    69 
269 config ARCH_SUPPORTS_KEXEC_PURGATORY           !!  70 config PGTABLE_LEVELS
270         def_bool y                             !!  71         int
                                                   >>  72         default 3
271                                                    73 
272 config ARCH_SUPPORTS_CRASH_DUMP                !!  74 config AUDIT_ARCH
273         def_bool y                             !!  75         bool
274         help                                   << 
275           Refer to <file:Documentation/arch/s3 << 
276           This option also enables s390 zfcpdu << 
277           See also <file:Documentation/arch/s3 << 
278                                                << 
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                                                    76 
308 choice                                         !!  77 menu "System setup"
309         prompt "Processor type"                << 
310         default MARCH_Z196                     << 
311                                                    78 
312 config MARCH_Z10                               !!  79 choice
313         bool "IBM System z10"                  !!  80         prompt "Alpha system type"
314         select HAVE_MARCH_Z10_FEATURES         !!  81         default ALPHA_GENERIC
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                                       82         help
370           Select this to enable optimizations  !!  83           This is the system type of your hardware.  A "generic" kernel will
371           3932 series).                        !!  84           run on any supported Alpha system. However, if you configure a
                                                   >>  85           kernel for your specific system, it will be faster and smaller.
372                                                    86 
373 endchoice                                      !!  87           To find out what type of Alpha system you have, you may want to
                                                   >>  88           check out the Linux/Alpha FAQ, accessible on the WWW from
                                                   >>  89           <http://www.alphalinux.org/>. In summary:
374                                                    90 
375 config MARCH_Z10_TUNE                          !!  91           Alcor/Alpha-XLT     AS 600, AS 500, XL-300, XL-366
376         def_bool TUNE_Z10 || MARCH_Z10 && TUNE !!  92           Alpha-XL            XL-233, XL-266
                                                   >>  93           AlphaBook1          Alpha laptop
                                                   >>  94           Avanti              AS 200, AS 205, AS 250, AS 255, AS 300, AS 400
                                                   >>  95           Cabriolet           AlphaPC64, AlphaPCI64
                                                   >>  96           DP264               DP264 / DS20 / ES40 / DS10 / DS10L
                                                   >>  97           EB164               EB164 21164 evaluation board
                                                   >>  98           EB64+               EB64+ 21064 evaluation board
                                                   >>  99           EB66                EB66 21066 evaluation board
                                                   >> 100           EB66+               EB66+ 21066 evaluation board
                                                   >> 101           Jensen              DECpc 150, DEC 2000 models 300, 500
                                                   >> 102           LX164               AlphaPC164-LX
                                                   >> 103           Lynx                AS 2100A
                                                   >> 104           Miata               Personal Workstation 433/500/600 a/au
                                                   >> 105           Marvel              AlphaServer ES47 / ES80 / GS1280
                                                   >> 106           Mikasa              AS 1000
                                                   >> 107           Noname              AXPpci33, UDB (Multia)
                                                   >> 108           Noritake            AS 1000A, AS 600A, AS 800
                                                   >> 109           PC164               AlphaPC164
                                                   >> 110           Rawhide             AS 1200, AS 4000, AS 4100
                                                   >> 111           Ruffian             RPX164-2, AlphaPC164-UX, AlphaPC164-BX
                                                   >> 112           SX164               AlphaPC164-SX
                                                   >> 113           Sable               AS 2000, AS 2100
                                                   >> 114           Shark               DS 20L
                                                   >> 115           Takara              Takara (OEM)
                                                   >> 116           Titan               AlphaServer ES45 / DS25 / DS15
                                                   >> 117           Wildfire            AlphaServer GS 40/80/160/320
377                                                   118 
378 config MARCH_Z196_TUNE                         !! 119           If you don't know what to do, choose "generic".
379         def_bool TUNE_Z196 || MARCH_Z196 && TU << 
380                                                   120 
381 config MARCH_ZEC12_TUNE                        !! 121 config ALPHA_GENERIC
382         def_bool TUNE_ZEC12 || MARCH_ZEC12 &&  !! 122         bool "Generic"
                                                   >> 123         depends on TTY
                                                   >> 124         select HAVE_EISA
                                                   >> 125         help
                                                   >> 126           A generic kernel will run on all supported Alpha hardware.
383                                                   127 
384 config MARCH_Z13_TUNE                          !! 128 config ALPHA_ALCOR
385         def_bool TUNE_Z13 || MARCH_Z13 && TUNE !! 129         bool "Alcor/Alpha-XLT"
                                                   >> 130         select HAVE_EISA
                                                   >> 131         help
                                                   >> 132           For systems using the Digital ALCOR chipset: 5 chips (4, 64-bit data
                                                   >> 133           slices (Data Switch, DSW) - 208-pin PQFP and 1 control (Control, I/O
                                                   >> 134           Address, CIA) - a 383 pin plastic PGA).  It provides a DRAM
                                                   >> 135           controller (256-bit memory bus) and a PCI interface.  It also does
                                                   >> 136           all the work required to support an external Bcache and to maintain
                                                   >> 137           memory coherence when a PCI device DMAs into (or out of) memory.
386                                                   138 
387 config MARCH_Z14_TUNE                          !! 139 config ALPHA_XL
388         def_bool TUNE_Z14 || MARCH_Z14 && TUNE !! 140         bool "Alpha-XL"
                                                   >> 141         help
                                                   >> 142           XL-233 and XL-266-based Alpha systems.
389                                                   143 
390 config MARCH_Z15_TUNE                          !! 144 config ALPHA_BOOK1
391         def_bool TUNE_Z15 || MARCH_Z15 && TUNE !! 145         bool "AlphaBook1"
                                                   >> 146         help
                                                   >> 147           Dec AlphaBook1/Burns Alpha-based laptops.
392                                                   148 
393 config MARCH_Z16_TUNE                          !! 149 config ALPHA_AVANTI_CH
394         def_bool TUNE_Z16 || MARCH_Z16 && TUNE !! 150         bool "Avanti"
395                                                   151 
396 choice                                         !! 152 config ALPHA_CABRIOLET
397         prompt "Tune code generation"          !! 153         bool "Cabriolet"
398         default TUNE_DEFAULT                   << 
399         help                                      154         help
400           Cause the compiler to tune (-mtune)  !! 155           Cabriolet AlphaPC64, AlphaPCI64 systems.  Derived from EB64+ but now
401           This will make the code run faster o !! 156           baby-AT with Flash boot ROM, no on-board SCSI or Ethernet. 3 ISA
402           somewhat slower on other machines.   !! 157           slots, 4 PCI slots (one pair are on a shared slot), uses plug-in
403           This option only changes how the com !! 158           Bcache SIMMs.  Requires power supply with 3.3V output.
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                                                   159 
440 endchoice                                      !! 160 config ALPHA_DP264
                                                   >> 161         bool "DP264"
                                                   >> 162         help
                                                   >> 163           Various 21264 systems with the tsunami core logic chipset.
                                                   >> 164           API Networks: 264DP, UP2000(+), CS20;
                                                   >> 165           Compaq: DS10(E,L), XP900, XP1000, DS20(E), ES40.
441                                                   166 
442 config 64BIT                                   !! 167 config ALPHA_EB164
443         def_bool y                             !! 168         bool "EB164"
                                                   >> 169         help
                                                   >> 170           EB164 21164 evaluation board from DEC.  Uses 21164 and ALCOR.  Has
                                                   >> 171           ISA and PCI expansion (3 ISA slots, 2 64-bit PCI slots (one is
                                                   >> 172           shared with an ISA slot) and 2 32-bit PCI slots.  Uses plus-in
                                                   >> 173           Bcache SIMMs. I/O sub-system provides SuperI/O (2S, 1P, FD), KBD,
                                                   >> 174           MOUSE (PS2 style), RTC/NVRAM.  Boot ROM is Flash.  PC-AT-sized
                                                   >> 175           motherboard.  Requires power supply with 3.3V output.
444                                                   176 
445 config COMMAND_LINE_SIZE                       !! 177 config ALPHA_EB64P_CH
446         int "Maximum size of kernel command li !! 178         bool "EB64+"
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                                                   179 
467           If unsure say N.                     !! 180 config ALPHA_EB66
                                                   >> 181         bool "EB66"
                                                   >> 182         help
                                                   >> 183           A Digital DS group board.  Uses 21066 or 21066A.  I/O sub-system is
                                                   >> 184           identical to EB64+.  Baby PC-AT size.  Runs from standard PC power
                                                   >> 185           supply.  The EB66 schematic was published as a marketing poster
                                                   >> 186           advertising the 21066 as "the first microprocessor in the world with
                                                   >> 187           embedded PCI".
468                                                   188 
469 config SMP                                     !! 189 config ALPHA_EB66P
470         def_bool y                             !! 190         bool "EB66+"
                                                   >> 191         help
                                                   >> 192           Later variant of the EB66 board.
471                                                   193 
472 config NR_CPUS                                 !! 194 config ALPHA_EIGER
473         int "Maximum number of CPUs (2-512)"   !! 195         bool "Eiger"
474         range 2 512                            !! 196         help
475         default "64"                           !! 197           Apparently an obscure OEM single-board computer based on the
476         help                                   !! 198           Typhoon/Tsunami chipset family. Information on it is scanty.
477           This allows you to specify the maxim << 
478           kernel will support. The maximum sup << 
479           minimum value which makes sense is 2 << 
480                                                   199 
481           This is purely to save memory - each !! 200 config ALPHA_JENSEN
482           approximately sixteen kilobytes to t !! 201         bool "Jensen"
                                                   >> 202         select HAVE_EISA
                                                   >> 203         help
                                                   >> 204           DEC PC 150 AXP (aka Jensen): This is a very old Digital system - one
                                                   >> 205           of the first-generation Alpha systems. A number of these systems
                                                   >> 206           seem to be available on the second- hand market. The Jensen is a
                                                   >> 207           floor-standing tower system which originally used a 150MHz 21064 It
                                                   >> 208           used programmable logic to interface a 486 EISA I/O bridge to the
                                                   >> 209           CPU.
483                                                   210 
484 config HOTPLUG_CPU                             !! 211 config ALPHA_LX164
485         def_bool y                             !! 212         bool "LX164"
                                                   >> 213         help
                                                   >> 214           A technical overview of this board is available at
                                                   >> 215           <http://www.unix-ag.org/Linux-Alpha/Architectures/LX164.html>.
486                                                   216 
487 config NUMA                                    !! 217 config ALPHA_LYNX
488         bool "NUMA support"                    !! 218         bool "Lynx"
489         depends on SCHED_TOPOLOGY              !! 219         select HAVE_EISA
490         default n                              << 
491         help                                      220         help
492           Enable NUMA support                  !! 221           AlphaServer 2100A-based systems.
493                                                   222 
494           This option adds NUMA support to the !! 223 config ALPHA_MARVEL
                                                   >> 224         bool "Marvel"
                                                   >> 225         help
                                                   >> 226           AlphaServer ES47 / ES80 / GS1280 based on EV7.
495                                                   227 
496 config NODES_SHIFT                             !! 228 config ALPHA_MIATA
497         int                                    !! 229         bool "Miata"
498         depends on NUMA                        !! 230         select HAVE_EISA
499         default "1"                            !! 231         help
                                                   >> 232           The Digital PersonalWorkStation (PWS 433a, 433au, 500a, 500au, 600a,
                                                   >> 233           or 600au).
500                                                   234 
501 config SCHED_SMT                               !! 235 config ALPHA_MIKASA
502         def_bool n                             !! 236         bool "Mikasa"
                                                   >> 237         help
                                                   >> 238           AlphaServer 1000-based Alpha systems.
503                                                   239 
504 config SCHED_MC                                !! 240 config ALPHA_NAUTILUS
505         def_bool n                             !! 241         bool "Nautilus"
                                                   >> 242         help
                                                   >> 243           Alpha systems based on the AMD 751 & ALI 1543C chipsets.
506                                                   244 
507 config SCHED_TOPOLOGY                          !! 245 config ALPHA_NONAME_CH
508         def_bool y                             !! 246         bool "Noname"
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                                                   247 
517 config SCHED_TOPOLOGY_VERTICAL                 !! 248 config ALPHA_NORITAKE
518         def_bool y                             !! 249         bool "Noritake"
519         bool "Use vertical CPU polarization by !! 250         select HAVE_EISA
520         depends on SCHED_TOPOLOGY              << 
521         help                                      251         help
522           Use vertical CPU polarization by def !! 252           AlphaServer 1000A, AlphaServer 600A, and AlphaServer 800-based
523           The default CPU polarization is hori !! 253           systems.
524                                                   254 
525 config HIPERDISPATCH_ON                        !! 255 config ALPHA_PC164
526         def_bool y                             !! 256         bool "PC164"
527         bool "Use hiperdispatch on vertical po << 
528         depends on SCHED_TOPOLOGY              << 
529         depends on PROC_SYSCTL                 << 
530         help                                   << 
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                                                   257 
559           With the option enabled the kernel p !! 258 config ALPHA_P2K
560           can be used to run the kernel in the !! 259         bool "Platform2000"
561                                                   260 
562           With the option disabled the modifie !! 261 config ALPHA_RAWHIDE
563           enabled with the "nobp=1" kernel par !! 262         bool "Rawhide"
                                                   >> 263         select HAVE_EISA
                                                   >> 264         help
                                                   >> 265           AlphaServer 1200, AlphaServer 4000 and AlphaServer 4100 machines.
                                                   >> 266           See HOWTO at
                                                   >> 267           <http://www.alphalinux.org/docs/rawhide/4100_install.shtml>.
564                                                   268 
565           If unsure, say N.                    !! 269 config ALPHA_RUFFIAN
                                                   >> 270         bool "Ruffian"
                                                   >> 271         help
                                                   >> 272           Samsung APC164UX.  There is a page on known problems and workarounds
                                                   >> 273           at <http://www.alphalinux.org/faq/FAQ-11.html>.
566                                                   274 
567 config EXPOLINE                                !! 275 config ALPHA_RX164
568         def_bool n                             !! 276         bool "RX164"
569         depends on $(cc-option,-mindirect-bran << 
570         prompt "Avoid speculative indirect bra << 
571         help                                   << 
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                                                   277 
578           If unsure, say N.                    !! 278 config ALPHA_SX164
                                                   >> 279         bool "SX164"
579                                                   280 
580 config EXPOLINE_EXTERN                         !! 281 config ALPHA_SABLE
581         def_bool EXPOLINE && CC_IS_GCC && GCC_ !! 282         bool "Sable"
582                  $(success,$(srctree)/arch/s39 !! 283         select HAVE_EISA
583         help                                   !! 284         help
584           Generate expolines as external funct !! 285           Digital AlphaServer 2000 and 2100-based systems.
585           This option is required for some too << 
586           are enabled. The kernel is compiled  << 
587           -mindirect-branch=thunk-extern, whic << 
588                                                   286 
589 choice                                         !! 287 config ALPHA_SHARK
590         prompt "Expoline default"              !! 288         bool "Shark"
591         depends on EXPOLINE                    << 
592         default EXPOLINE_FULL                  << 
593                                                   289 
594 config EXPOLINE_OFF                            !! 290 config ALPHA_TAKARA
595         bool "spectre_v2=off"                  !! 291         bool "Takara"
                                                   >> 292         help
                                                   >> 293           Alpha 11164-based OEM single-board computer.
596                                                   294 
597 config EXPOLINE_AUTO                           !! 295 config ALPHA_TITAN
598         bool "spectre_v2=auto"                 !! 296         bool "Titan"
                                                   >> 297         help
                                                   >> 298           AlphaServer ES45/DS25 SMP based on EV68 and Titan chipset.
599                                                   299 
600 config EXPOLINE_FULL                           !! 300 config ALPHA_WILDFIRE
601         bool "spectre_v2=on"                   !! 301         bool "Wildfire"
                                                   >> 302         help
                                                   >> 303           AlphaServer GS 40/80/160/320 SMP based on the EV67 core.
602                                                   304 
603 endchoice                                         305 endchoice
604                                                   306 
605 config RELOCATABLE                             !! 307 # clear all implied options (don't want default values for those):
606         def_bool y                             !! 308 # Most of these machines have ISA slots; not exactly sure which don't,
                                                   >> 309 # and this doesn't activate hordes of code, so do it always.
                                                   >> 310 config ISA
                                                   >> 311         bool
                                                   >> 312         default y
607         help                                      313         help
608           This builds a kernel image that reta !! 314           Find out whether you have ISA slots on your motherboard.  ISA is the
609           so it can be loaded at an arbitrary  !! 315           name of a bus system, i.e. the way the CPU talks to the other stuff
610           The relocations make the kernel imag !! 316           inside your box.  Other bus systems are PCI, EISA, MicroChannel
611           10%), but are discarded at runtime.  !! 317           (MCA) or VESA.  ISA is an older system, now being displaced by PCI;
612           Note: this option exists only for do !! 318           newer boards don't support it.  If you have ISA, say Y, otherwise N.
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                                                   319 
656 endmenu                                        !! 320 config ISA_DMA_API
657                                                !! 321         bool
658 menu "Memory setup"                            !! 322         default y
659                                                << 
660 config ARCH_SPARSEMEM_ENABLE                   << 
661         def_bool y                             << 
662         select SPARSEMEM_VMEMMAP_ENABLE        << 
663         select SPARSEMEM_VMEMMAP               << 
664                                                   323 
665 config ARCH_SPARSEMEM_DEFAULT                  !! 324 config ALPHA_NONAME
666         def_bool y                             !! 325         bool
                                                   >> 326         depends on ALPHA_BOOK1 || ALPHA_NONAME_CH
                                                   >> 327         default y
                                                   >> 328         help
                                                   >> 329           The AXPpci33 (aka NoName), is based on the EB66 (includes the Multia
                                                   >> 330           UDB).  This design was produced by Digital's Technical OEM (TOEM)
                                                   >> 331           group. It uses the 21066 processor running at 166MHz or 233MHz. It
                                                   >> 332           is a baby-AT size, and runs from a standard PC power supply. It has
                                                   >> 333           5 ISA slots and 3 PCI slots (one pair are a shared slot). There are
                                                   >> 334           2 versions, with either PS/2 or large DIN connectors for the
                                                   >> 335           keyboard.
                                                   >> 336 
                                                   >> 337 config ALPHA_EV4
                                                   >> 338         bool
                                                   >> 339         depends on ALPHA_JENSEN || (ALPHA_SABLE && !ALPHA_GAMMA) || ALPHA_LYNX || ALPHA_NORITAKE && !ALPHA_PRIMO || ALPHA_MIKASA && !ALPHA_PRIMO || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL || ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
                                                   >> 340         default y if !ALPHA_LYNX
                                                   >> 341 
                                                   >> 342 config ALPHA_LCA
                                                   >> 343         bool
                                                   >> 344         depends on ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
                                                   >> 345         default y
667                                                   346 
668 config MAX_PHYSMEM_BITS                        !! 347 config ALPHA_APECS
669         int "Maximum size of supported physica !! 348         bool
670         range 42 53                            !! 349         depends on !ALPHA_PRIMO && (ALPHA_NORITAKE || ALPHA_MIKASA) || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL
671         default "46"                           !! 350         default y
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                                                   351 
678 config CHECK_STACK                             !! 352 config ALPHA_EB64P
679         def_bool y                             !! 353         bool
680         depends on !VMAP_STACK                 !! 354         depends on ALPHA_CABRIOLET || ALPHA_EB64P_CH
681         prompt "Detect kernel stack overflow"  !! 355         default y
682         help                                      356         help
683           This option enables the compiler opt !! 357           Uses 21064 or 21064A and APECs.  Has ISA and PCI expansion (3 ISA,
684           -mstack-size if they are available.  !! 358           2 PCI, one pair are on a shared slot). Supports 36-bit DRAM SIMs.
685           it will emit additional code to each !! 359           ISA bus generated by Intel SaturnI/O PCI-ISA bridge. On-board SCSI
686           an illegal operation if the kernel s !! 360           (NCR 810 on PCI) Ethernet (Digital 21040), KBD, MOUSE (PS2 style),
687                                                !! 361           SuperI/O (2S, 1P, FD), RTC/NVRAM. Boot ROM is EPROM.  PC-AT size.
688           Say N if you are unsure.             !! 362           Runs from standard PC power supply.
689                                                !! 363 
690 config STACK_GUARD                             !! 364 config ALPHA_EV5
691         int "Size of the guard area (128-1024) !! 365         bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_LYNX
692         range 128 1024                         !! 366         default y if ALPHA_RX164 || ALPHA_RAWHIDE || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_SABLE && ALPHA_GAMMA || ALPHA_NORITAKE && ALPHA_PRIMO || ALPHA_MIKASA && ALPHA_PRIMO || ALPHA_PC164 || ALPHA_TAKARA || ALPHA_EB164 || ALPHA_ALCOR
693         depends on CHECK_STACK                 !! 367 
694         default "256"                          !! 368 config ALPHA_EV4
695         help                                   !! 369         bool
696           This allows you to specify the size  !! 370         default y if ALPHA_LYNX && !ALPHA_EV5
697           end of the kernel stack. If the kern !! 371 
698           area on function entry an illegal op !! 372 config ALPHA_CIA
699           needs to be a power of 2. Please kee !! 373         bool
700           interrupt frame is 184 bytes for 31  !! 374         depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_NORITAKE && ALPHA_PRIMO || ALPHA_MIKASA && ALPHA_PRIMO || ALPHA_PC164 || ALPHA_TAKARA || ALPHA_EB164 || ALPHA_ALCOR
701           The minimum size for the stack guard !! 375         default y
702           512 for 64 bit.                      << 
703                                                   376 
704 endmenu                                        !! 377 config ALPHA_EV56
                                                   >> 378         bool "EV56 CPU (speed >= 366MHz)?" if ALPHA_ALCOR
                                                   >> 379         default y if ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA
705                                                   380 
706 menu "I/O subsystem"                           !! 381 config ALPHA_EV56
                                                   >> 382         prompt "EV56 CPU (speed >= 333MHz)?"
                                                   >> 383         depends on ALPHA_NORITAKE || ALPHA_PRIMO
707                                                   384 
708 config QDIO                                    !! 385 config ALPHA_EV56
709         def_tristate y                         !! 386         prompt "EV56 CPU (speed >= 400MHz)?"
710         prompt "QDIO support"                  !! 387         depends on ALPHA_RAWHIDE
                                                   >> 388 
                                                   >> 389 config ALPHA_PRIMO
                                                   >> 390         bool "EV5 CPU daughtercard (model 5/xxx)?"
                                                   >> 391         depends on ALPHA_NORITAKE || ALPHA_MIKASA
711         help                                      392         help
712           This driver provides the Queued Dire !! 393           Say Y if you have an AS 1000 5/xxx or an AS 1000A 5/xxx.
713           IBM System z.                        << 
714                                                   394 
715           To compile this driver as a module,  !! 395 config ALPHA_GAMMA
716           module will be called qdio.          !! 396         bool "EV5 CPU(s) (model 5/xxx)?"
                                                   >> 397         depends on ALPHA_SABLE
                                                   >> 398         help
                                                   >> 399           Say Y if you have an AS 2000 5/xxx or an AS 2100 5/xxx.
717                                                   400 
718           If unsure, say Y.                    !! 401 config ALPHA_GAMMA
                                                   >> 402         bool
                                                   >> 403         depends on ALPHA_LYNX
                                                   >> 404         default y
719                                                   405 
720 if PCI                                         !! 406 config ALPHA_T2
                                                   >> 407         bool
                                                   >> 408         depends on ALPHA_SABLE || ALPHA_LYNX
                                                   >> 409         default y
721                                                   410 
722 config PCI_NR_FUNCTIONS                        !! 411 config ALPHA_PYXIS
723         int "Maximum number of PCI functions ( !! 412         bool
724         range 1 4096                           !! 413         depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN
725         default "512"                          !! 414         default y
726         help                                   << 
727           This allows you to specify the maxim << 
728           this kernel will support.            << 
729                                                   415 
730 endif # PCI                                    !! 416 config ALPHA_EV6
                                                   >> 417         bool
                                                   >> 418         depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL
                                                   >> 419         default y
731                                                   420 
732 config HAS_IOMEM                               !! 421 config ALPHA_TSUNAMI
733         def_bool PCI                           !! 422         bool
                                                   >> 423         depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER
                                                   >> 424         default y
734                                                   425 
735 config CHSC_SCH                                !! 426 config ALPHA_EV67
736         def_tristate m                         !! 427         bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER
737         prompt "Support for CHSC subchannels"  !! 428         default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
738         help                                   !! 429         help
739           This driver allows usage of CHSC sub !! 430           Is this a machine based on the EV67 core?  If in doubt, select N here
740           is usually present on LPAR only.     !! 431           and the machine will be treated as an EV6.
741           The driver creates a device /dev/chs !! 432 
742           obtain I/O configuration information !! 433 config ALPHA_MCPCIA
743           to issue asynchronous chsc commands  !! 434         bool
744           You will usually only want to use th !! 435         depends on ALPHA_RAWHIDE
745           LPAR designated for system managemen !! 436         default y
746                                                   437 
747           To compile this driver as a module,  !! 438 config ALPHA_POLARIS
748           module will be called chsc_sch.      !! 439         bool
                                                   >> 440         depends on ALPHA_RX164
                                                   >> 441         default y
749                                                   442 
750           If unsure, say N.                    !! 443 config ALPHA_IRONGATE
                                                   >> 444         bool
                                                   >> 445         depends on ALPHA_NAUTILUS
                                                   >> 446         default y
751                                                   447 
752 config SCM_BUS                                 !! 448 config GENERIC_HWEIGHT
753         def_bool y                             !! 449         bool
754         prompt "SCM bus driver"                !! 450         default y if !ALPHA_EV67
755         help                                   << 
756           Bus driver for Storage Class Memory. << 
757                                                   451 
758 config EADM_SCH                                !! 452 config ALPHA_AVANTI
759         def_tristate m                         !! 453         bool
760         prompt "Support for EADM subchannels"  !! 454         depends on ALPHA_XL || ALPHA_AVANTI_CH
761         depends on SCM_BUS                     !! 455         default y
762         help                                      456         help
763           This driver allows usage of EADM sub !! 457           Avanti AS 200, AS 205, AS 250, AS 255, AS 300, and AS 400-based
764           as a communication vehicle for SCM i !! 458           Alphas. Info at
765                                                !! 459           <http://www.unix-ag.org/Linux-Alpha/Architectures/Avanti.html>.
766           To compile this driver as a module,  !! 460 
767           module will be called eadm_sch.      !! 461 config ALPHA_BROKEN_IRQ_MASK
                                                   >> 462         bool
                                                   >> 463         depends on ALPHA_GENERIC || ALPHA_PC164
                                                   >> 464         default y
768                                                   465 
769 config AP                                      !! 466 config VGA_HOSE
770         def_tristate y                         !! 467         bool
771         prompt "Support for Adjunct Processors !! 468         depends on VGA_CONSOLE && (ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL || ALPHA_TSUNAMI)
                                                   >> 469         default y
772         help                                      470         help
773           This driver allows usage to Adjunct  !! 471           Support VGA on an arbitrary hose; needed for several platforms
774           the ap bus, cards and queues. Suppor !! 472           which always have multiple hoses, and whose consoles support it.
775           the CryptoExpress Cards (CEX).       << 
776                                                   473 
777           To compile this driver as a module,  << 
778           module will be called ap.            << 
779                                                   474 
780           If unsure, say Y (default).          !! 475 config ALPHA_QEMU
781                                                !! 476         bool "Run under QEMU emulation"
782 config AP_DEBUG                                !! 477         depends on !ALPHA_GENERIC
783         def_bool n                             << 
784         prompt "Enable debug features for Adju << 
785         depends on AP                          << 
786         help                                      478         help
787           Say 'Y' here to enable some addition !! 479           Assume the presence of special features supported by QEMU PALcode
788           Processor (ap) devices.              !! 480           that reduce the overhead of system emulation.
789                                                << 
790           There will be some more sysfs attrib << 
791                                                   481 
792           Do not enable on production level ke !! 482           Generic kernels will auto-detect QEMU.  But when building a
                                                   >> 483           system-specific kernel, the assumption is that we want to
                                                   >> 484           eliminate as many runtime tests as possible.
793                                                   485 
794           If unsure, say N.                       486           If unsure, say N.
795                                                   487 
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                                                   488 
818           To compile this driver as a module,  !! 489 config ALPHA_SRM
819           will be called vfio_ap.              !! 490         bool "Use SRM as bootloader" if ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P || ALPHA_PC164 || ALPHA_TAKARA || ALPHA_EB164 || ALPHA_ALCOR || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_NAUTILUS || ALPHA_NONAME
                                                   >> 491         depends on TTY
                                                   >> 492         default y if ALPHA_JENSEN || ALPHA_MIKASA || ALPHA_SABLE || ALPHA_LYNX || ALPHA_NORITAKE || ALPHA_DP264 || ALPHA_RAWHIDE || ALPHA_EIGER || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
                                                   >> 493         help
                                                   >> 494           There are two different types of booting firmware on Alphas: SRM,
                                                   >> 495           which is command line driven, and ARC, which uses menus and arrow
                                                   >> 496           keys. Details about the Linux/Alpha booting process are contained in
                                                   >> 497           the Linux/Alpha FAQ, accessible on the WWW from
                                                   >> 498           <http://www.alphalinux.org/>.
                                                   >> 499 
                                                   >> 500           The usual way to load Linux on an Alpha machine is to use MILO
                                                   >> 501           (a bootloader that lets you pass command line parameters to the
                                                   >> 502           kernel just like lilo does for the x86 architecture) which can be
                                                   >> 503           loaded either from ARC or can be installed directly as a permanent
                                                   >> 504           firmware replacement from floppy (which requires changing a certain
                                                   >> 505           jumper on the motherboard). If you want to do either of these, say N
                                                   >> 506           here. If MILO doesn't work on your system (true for Jensen
                                                   >> 507           motherboards), you can bypass it altogether and boot Linux directly
                                                   >> 508           from an SRM console; say Y here in order to do that. Note that you
                                                   >> 509           won't be able to boot from an IDE disk using SRM.
820                                                   510 
821 endmenu                                        !! 511           If unsure, say N.
822                                                   512 
823 config CCW                                     !! 513 config ARCH_MAY_HAVE_PC_FDC
824         def_bool y                                514         def_bool y
825                                                   515 
826 config HAVE_PNETID                             !! 516 config SMP
827         tristate                               !! 517         bool "Symmetric multi-processing support"
828         default (SMC || CCWGROUP)              !! 518         depends on ALPHA_SABLE || ALPHA_LYNX || 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                                      519         help
836           Select this option, if you want to u !! 520           This enables support for systems with more than one CPU. If you have
837           handling under VM. If running native !! 521           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 !! 522           than one CPU, say Y.
839           pseudo page fault handling will be u !! 523 
840           Note that VM 4.2 supports PFAULT but !! 524           If you say N here, the kernel will run on uni- and multiprocessor
841           implementation that causes some prob !! 525           machines, but will use only one CPU of a multiprocessor machine. If
842           Everybody who wants to run Linux und !! 526           you say Y here, the kernel will run on many, but not all,
843           this option.                         !! 527           uniprocessor machines. On a uniprocessor machine, the kernel
844                                                !! 528           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                                                   529 
858 config CMM_IUCV                                !! 530           See also the SMP-HOWTO available at
859         def_bool y                             !! 531           <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                                                   532 
866 config APPLDATA_BASE                           !! 533           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                                                   534 
930 config S390_HYPFS                              !! 535 config NR_CPUS
931         def_bool y                             !! 536         int "Maximum number of CPUs (2-32)"
932         prompt "s390 hypervisor information"   !! 537         range 2 32
                                                   >> 538         depends on SMP
                                                   >> 539         default "32" if ALPHA_GENERIC || ALPHA_MARVEL
                                                   >> 540         default "4" if !ALPHA_GENERIC && !ALPHA_MARVEL
933         help                                      541         help
934           This provides several binary files a !! 542           MARVEL support can handle a maximum of 32 CPUs, all the others
935           provide accounting information in an !! 543           with working support have a maximum of 4 CPUs.
936                                                   544 
937 config S390_HYPFS_FS                           !! 545 config ARCH_SPARSEMEM_ENABLE
938         def_bool n                             !! 546         bool "Sparse Memory Support"
939         prompt "s390 hypervisor file system su << 
940         select SYS_HYPERVISOR                  << 
941         depends on S390_HYPFS                  << 
942         help                                      547         help
943           This is a virtual file system intend !! 548           Say Y to support efficient handling of discontiguous physical memory,
944           information in an s390 hypervisor en !! 549           for systems that have huge holes in the physical address space.
945           is deprecated and should not be used << 
946                                                   550 
947           Say N if you are unsure.             !! 551 config ALPHA_WTINT
                                                   >> 552         bool "Use WTINT" if ALPHA_SRM || ALPHA_GENERIC
                                                   >> 553         default y if ALPHA_QEMU
                                                   >> 554         default n if ALPHA_EV5 || ALPHA_EV56 || (ALPHA_EV4 && !ALPHA_LCA)
                                                   >> 555         default n if !ALPHA_SRM && !ALPHA_GENERIC
                                                   >> 556         default y if SMP
                                                   >> 557         help
                                                   >> 558           The Wait for Interrupt (WTINT) PALcall attempts to place the CPU
                                                   >> 559           to sleep until the next interrupt.  This may reduce the power
                                                   >> 560           consumed, and the heat produced by the computer.  However, it has
                                                   >> 561           the side effect of making the cycle counter unreliable as a timing
                                                   >> 562           device across the sleep.
948                                                   563 
949 source "arch/s390/kvm/Kconfig"                 !! 564           For emulation under QEMU, definitely say Y here, as we have other
                                                   >> 565           mechanisms for measuring time than the cycle counter.
950                                                   566 
951 config S390_GUEST                              !! 567           For EV4 (but not LCA), EV5 and EV56 systems, or for systems running
952         def_bool y                             !! 568           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                                                   569 
961           Select this option if you want to ru !! 570           For SMP systems we cannot use the cycle counter for timing anyway,
962           the KVM hypervisor.                  !! 571           so you might as well say Y here.
963                                                   572 
964 endmenu                                        !! 573           If unsure, say N.
                                                   >> 574 
                                                   >> 575 # LARGE_VMALLOC is racy, if you *really* need it then fix it first
                                                   >> 576 config ALPHA_LARGE_VMALLOC
                                                   >> 577         bool
                                                   >> 578         help
                                                   >> 579           Process creation and other aspects of virtual memory management can
                                                   >> 580           be streamlined if we restrict the kernel to one PGD for all vmalloc
                                                   >> 581           allocations.  This equates to about 8GB.
                                                   >> 582 
                                                   >> 583           Under normal circumstances, this is so far and above what is needed
                                                   >> 584           as to be laughable.  However, there are certain applications (such
                                                   >> 585           as benchmark-grade in-kernel web serving) that can make use of as
                                                   >> 586           much vmalloc space as is available.
                                                   >> 587 
                                                   >> 588           Say N unless you know you need gobs and gobs of vmalloc space.
                                                   >> 589 
                                                   >> 590 config VERBOSE_MCHECK
                                                   >> 591         bool "Verbose Machine Checks"
                                                   >> 592 
                                                   >> 593 config VERBOSE_MCHECK_ON
                                                   >> 594         int "Verbose Printing Mode (0=off, 1=on, 2=all)"
                                                   >> 595         depends on VERBOSE_MCHECK
                                                   >> 596         default 1
                                                   >> 597         help
                                                   >> 598           This option allows the default printing mode to be set, and then
                                                   >> 599           possibly overridden by a boot command argument.
                                                   >> 600 
                                                   >> 601           For example, if one wanted the option of printing verbose
                                                   >> 602           machine checks, but wanted the default to be as if verbose
                                                   >> 603           machine check printing was turned off, then one would choose
                                                   >> 604           the printing mode to be 0. Then, upon reboot, one could add
                                                   >> 605           the boot command line "verbose_mcheck=1" to get the normal
                                                   >> 606           verbose machine check printing, or "verbose_mcheck=2" to get
                                                   >> 607           the maximum information available.
                                                   >> 608 
                                                   >> 609           Take the default (1) unless you want more control or more info.
965                                                   610 
966 config S390_MODULES_SANITY_TEST_HELPERS        !! 611 choice
967         def_bool n                             !! 612         prompt "Timer interrupt frequency (HZ)?"
                                                   >> 613         default HZ_128 if ALPHA_QEMU
                                                   >> 614         default HZ_1200 if ALPHA_RAWHIDE
                                                   >> 615         default HZ_1024
                                                   >> 616         help
                                                   >> 617           The frequency at which timer interrupts occur.  A high frequency
                                                   >> 618           minimizes latency, whereas a low frequency minimizes overhead of
                                                   >> 619           process accounting.  The later effect is especially significant
                                                   >> 620           when being run under QEMU.
                                                   >> 621 
                                                   >> 622           Note that some Alpha hardware cannot change the interrupt frequency
                                                   >> 623           of the timer.  If unsure, say 1024 (or 1200 for Rawhide).
                                                   >> 624 
                                                   >> 625         config HZ_32
                                                   >> 626                 bool "32 Hz"
                                                   >> 627         config HZ_64
                                                   >> 628                 bool "64 Hz"
                                                   >> 629         config HZ_128
                                                   >> 630                 bool "128 Hz"
                                                   >> 631         config HZ_256
                                                   >> 632                 bool "256 Hz"
                                                   >> 633         config HZ_1024
                                                   >> 634                 bool "1024 Hz"
                                                   >> 635         config HZ_1200
                                                   >> 636                 bool "1200 Hz"
                                                   >> 637 endchoice
968                                                   638 
969 menu "Selftests"                               !! 639 config HZ
                                                   >> 640         int
                                                   >> 641         default 32 if HZ_32
                                                   >> 642         default 64 if HZ_64
                                                   >> 643         default 128 if HZ_128
                                                   >> 644         default 256 if HZ_256
                                                   >> 645         default 1200 if HZ_1200
                                                   >> 646         default 1024
                                                   >> 647 
                                                   >> 648 config SRM_ENV
                                                   >> 649         tristate "SRM environment through procfs"
                                                   >> 650         depends on PROC_FS
                                                   >> 651         help
                                                   >> 652           If you enable this option, a subdirectory inside /proc called
                                                   >> 653           /proc/srm_environment will give you access to the all important
                                                   >> 654           SRM environment variables (those which have a name) and also
                                                   >> 655           to all others (by their internal number).
                                                   >> 656 
                                                   >> 657           SRM is something like a BIOS for Alpha machines. There are some
                                                   >> 658           other such BIOSes, like AlphaBIOS, which this driver cannot
                                                   >> 659           support (hey, that's not SRM!).
                                                   >> 660 
                                                   >> 661           Despite the fact that this driver doesn't work on all Alphas (but
                                                   >> 662           only on those which have SRM as their firmware), it's save to
                                                   >> 663           build it even if your particular machine doesn't know about SRM
                                                   >> 664           (or if you intend to compile a generic kernel). It will simply
                                                   >> 665           not create those subdirectory in /proc (and give you some warning,
                                                   >> 666           of course).
970                                                   667 
971 config S390_UNWIND_SELFTEST                    !! 668           This driver is also available as a module and will be called
972         def_tristate n                         !! 669           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                                                  670 
1006           Say N if you are unsure.            << 
1007 endmenu                                          671 endmenu
                                                   >> 672 
                                                   >> 673 # DUMMY_CONSOLE may be defined in drivers/video/console/Kconfig
                                                   >> 674 # but we also need it if VGA_HOSE is set
                                                   >> 675 config DUMMY_CONSOLE
                                                   >> 676         bool
                                                   >> 677         depends on VGA_HOSE
                                                   >> 678         default y
                                                      

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