1 # SPDX-License-Identifier: GPL-2.0
11 config LOCKDEP_SUPPORT
14 config STACKTRACE_SUPPORT
17 config RWSEM_GENERIC_SPINLOCK
20 config RWSEM_XCHGADD_ALGORITHM
23 config ARCH_HAS_ILOG2_U32
26 config ARCH_HAS_ILOG2_U64
29 config GENERIC_HWEIGHT
35 config GENERIC_BUG_RELATIVE_POINTERS
38 config GENERIC_LOCKBREAK
39 def_bool y if SMP && PREEMPT
44 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
56 config ARCH_SUPPORTS_UPROBES
59 config KASAN_SHADOW_OFFSET
62 default 0x18000000000000 if KASAN_S390_4_LEVEL_PAGING
67 select ARCH_BINFMT_ELF_STATE
68 select ARCH_HAS_DEVMEM_IS_ALLOWED
69 select ARCH_HAS_ELF_RANDOMIZE
70 select ARCH_HAS_FORTIFY_SOURCE
71 select ARCH_HAS_GCOV_PROFILE_ALL
72 select ARCH_HAS_GIGANTIC_PAGE if (MEMORY_ISOLATION && COMPACTION) || CMA
74 select ARCH_HAS_PTE_SPECIAL
75 select ARCH_HAS_SET_MEMORY
76 select ARCH_HAS_STRICT_KERNEL_RWX
77 select ARCH_HAS_STRICT_MODULE_RWX
78 select ARCH_HAS_UBSAN_SANITIZE_ALL
79 select ARCH_HAVE_NMI_SAFE_CMPXCHG
80 select ARCH_INLINE_READ_LOCK
81 select ARCH_INLINE_READ_LOCK_BH
82 select ARCH_INLINE_READ_LOCK_IRQ
83 select ARCH_INLINE_READ_LOCK_IRQSAVE
84 select ARCH_INLINE_READ_TRYLOCK
85 select ARCH_INLINE_READ_UNLOCK
86 select ARCH_INLINE_READ_UNLOCK_BH
87 select ARCH_INLINE_READ_UNLOCK_IRQ
88 select ARCH_INLINE_READ_UNLOCK_IRQRESTORE
89 select ARCH_INLINE_SPIN_LOCK
90 select ARCH_INLINE_SPIN_LOCK_BH
91 select ARCH_INLINE_SPIN_LOCK_IRQ
92 select ARCH_INLINE_SPIN_LOCK_IRQSAVE
93 select ARCH_INLINE_SPIN_TRYLOCK
94 select ARCH_INLINE_SPIN_TRYLOCK_BH
95 select ARCH_INLINE_SPIN_UNLOCK
96 select ARCH_INLINE_SPIN_UNLOCK_BH
97 select ARCH_INLINE_SPIN_UNLOCK_IRQ
98 select ARCH_INLINE_SPIN_UNLOCK_IRQRESTORE
99 select ARCH_INLINE_WRITE_LOCK
100 select ARCH_INLINE_WRITE_LOCK_BH
101 select ARCH_INLINE_WRITE_LOCK_IRQ
102 select ARCH_INLINE_WRITE_LOCK_IRQSAVE
103 select ARCH_INLINE_WRITE_TRYLOCK
104 select ARCH_INLINE_WRITE_UNLOCK
105 select ARCH_INLINE_WRITE_UNLOCK_BH
106 select ARCH_INLINE_WRITE_UNLOCK_IRQ
107 select ARCH_INLINE_WRITE_UNLOCK_IRQRESTORE
108 select ARCH_SAVE_PAGE_KEYS if HIBERNATION
109 select ARCH_SUPPORTS_ATOMIC_RMW
110 select ARCH_SUPPORTS_NUMA_BALANCING
111 select ARCH_USE_BUILTIN_BSWAP
112 select ARCH_USE_CMPXCHG_LOCKREF
113 select ARCH_WANTS_DYNAMIC_TASK_STRUCT
114 select ARCH_WANT_IPC_PARSE_VERSION
115 select BUILDTIME_EXTABLE_SORT
116 select CLONE_BACKWARDS2
117 select DYNAMIC_FTRACE if FUNCTION_TRACER
118 select GENERIC_CLOCKEVENTS
119 select GENERIC_CPU_AUTOPROBE
120 select GENERIC_CPU_DEVICES if !SMP
121 select GENERIC_CPU_VULNERABILITIES
122 select GENERIC_FIND_FIRST_BIT
123 select GENERIC_SMP_IDLE_THREAD
124 select GENERIC_TIME_VSYSCALL
125 select HAVE_ALIGNED_STRUCT_PAGE if SLUB
126 select HAVE_ARCH_AUDITSYSCALL
127 select HAVE_ARCH_JUMP_LABEL
128 select HAVE_ARCH_JUMP_LABEL_RELATIVE
129 select HAVE_ARCH_KASAN
130 select CPU_NO_EFFICIENT_FFS if !HAVE_MARCH_Z9_109_FEATURES
131 select HAVE_ARCH_SECCOMP_FILTER
132 select HAVE_ARCH_SOFT_DIRTY
133 select HAVE_ARCH_TRACEHOOK
134 select HAVE_ARCH_TRANSPARENT_HUGEPAGE
135 select HAVE_ARCH_VMAP_STACK
136 select HAVE_EBPF_JIT if PACK_STACK && HAVE_MARCH_Z196_FEATURES
137 select HAVE_CMPXCHG_DOUBLE
138 select HAVE_CMPXCHG_LOCAL
139 select HAVE_COPY_THREAD_TLS
140 select HAVE_DEBUG_KMEMLEAK
141 select HAVE_DMA_CONTIGUOUS
142 select HAVE_DYNAMIC_FTRACE
143 select HAVE_DYNAMIC_FTRACE_WITH_REGS
144 select HAVE_EFFICIENT_UNALIGNED_ACCESS
146 select HAVE_FTRACE_MCOUNT_RECORD
147 select HAVE_FUNCTION_GRAPH_TRACER
148 select HAVE_FUNCTION_TRACER
149 select HAVE_FUTEX_CMPXCHG if FUTEX
150 select HAVE_GCC_PLUGINS
151 select HAVE_KERNEL_BZIP2
152 select HAVE_KERNEL_GZIP
153 select HAVE_KERNEL_LZ4
154 select HAVE_KERNEL_LZMA
155 select HAVE_KERNEL_LZO
156 select HAVE_KERNEL_UNCOMPRESSED
157 select HAVE_KERNEL_XZ
159 select HAVE_KRETPROBES
161 select HAVE_LIVEPATCH
162 select HAVE_PERF_REGS
163 select HAVE_PERF_USER_STACK_DUMP
164 select HAVE_MEMBLOCK_NODE_MAP
165 select HAVE_MEMBLOCK_PHYS_MAP
166 select HAVE_MOD_ARCH_SPECIFIC
167 select HAVE_NOP_MCOUNT
169 select HAVE_PERF_EVENTS
170 select HAVE_REGS_AND_STACK_ACCESS_API
172 select HAVE_SYSCALL_TRACEPOINTS
173 select HAVE_VIRT_CPU_ACCOUNTING
174 select MODULES_USE_ELF_RELA
176 select OLD_SIGSUSPEND3
178 select SYSCTL_EXCEPTION_TRACE
179 select THREAD_INFO_IN_TASK
181 select VIRT_CPU_ACCOUNTING
182 select ARCH_HAS_SCALED_CPUTIME
187 config SCHED_OMIT_FRAME_POINTER
190 config PGTABLE_LEVELS
194 source "kernel/livepatch/Kconfig"
196 menu "Processor type and features"
198 config HAVE_MARCH_Z900_FEATURES
201 config HAVE_MARCH_Z990_FEATURES
203 select HAVE_MARCH_Z900_FEATURES
205 config HAVE_MARCH_Z9_109_FEATURES
207 select HAVE_MARCH_Z990_FEATURES
209 config HAVE_MARCH_Z10_FEATURES
211 select HAVE_MARCH_Z9_109_FEATURES
213 config HAVE_MARCH_Z196_FEATURES
215 select HAVE_MARCH_Z10_FEATURES
217 config HAVE_MARCH_ZEC12_FEATURES
219 select HAVE_MARCH_Z196_FEATURES
221 config HAVE_MARCH_Z13_FEATURES
223 select HAVE_MARCH_ZEC12_FEATURES
225 config HAVE_MARCH_Z14_FEATURES
227 select HAVE_MARCH_Z13_FEATURES
230 prompt "Processor type"
234 bool "IBM zSeries model z800 and z900"
235 select HAVE_MARCH_Z900_FEATURES
237 Select this to enable optimizations for model z800/z900 (2064 and
238 2066 series). This will enable some optimizations that are not
239 available on older ESA/390 (31 Bit) only CPUs.
242 bool "IBM zSeries model z890 and z990"
243 select HAVE_MARCH_Z990_FEATURES
245 Select this to enable optimizations for model z890/z990 (2084 and
246 2086 series). The kernel will be slightly faster but will not work
251 select HAVE_MARCH_Z9_109_FEATURES
253 Select this to enable optimizations for IBM System z9 (2094 and
254 2096 series). The kernel will be slightly faster but will not work
258 bool "IBM System z10"
259 select HAVE_MARCH_Z10_FEATURES
261 Select this to enable optimizations for IBM System z10 (2097 and
262 2098 series). The kernel will be slightly faster but will not work
266 bool "IBM zEnterprise 114 and 196"
267 select HAVE_MARCH_Z196_FEATURES
269 Select this to enable optimizations for IBM zEnterprise 114 and 196
270 (2818 and 2817 series). The kernel will be slightly faster but will
271 not work on older machines.
274 bool "IBM zBC12 and zEC12"
275 select HAVE_MARCH_ZEC12_FEATURES
277 Select this to enable optimizations for IBM zBC12 and zEC12 (2828 and
278 2827 series). The kernel will be slightly faster but will not work on
282 bool "IBM z13s and z13"
283 select HAVE_MARCH_Z13_FEATURES
285 Select this to enable optimizations for IBM z13s and z13 (2965 and
286 2964 series). The kernel will be slightly faster but will not work on
290 bool "IBM z14 ZR1 and z14"
291 select HAVE_MARCH_Z14_FEATURES
293 Select this to enable optimizations for IBM z14 ZR1 and z14 (3907
294 and 3906 series). The kernel will be slightly faster but will not
295 work on older machines.
299 config MARCH_Z900_TUNE
300 def_bool TUNE_Z900 || MARCH_Z900 && TUNE_DEFAULT
302 config MARCH_Z990_TUNE
303 def_bool TUNE_Z990 || MARCH_Z990 && TUNE_DEFAULT
305 config MARCH_Z9_109_TUNE
306 def_bool TUNE_Z9_109 || MARCH_Z9_109 && TUNE_DEFAULT
308 config MARCH_Z10_TUNE
309 def_bool TUNE_Z10 || MARCH_Z10 && TUNE_DEFAULT
311 config MARCH_Z196_TUNE
312 def_bool TUNE_Z196 || MARCH_Z196 && TUNE_DEFAULT
314 config MARCH_ZEC12_TUNE
315 def_bool TUNE_ZEC12 || MARCH_ZEC12 && TUNE_DEFAULT
317 config MARCH_Z13_TUNE
318 def_bool TUNE_Z13 || MARCH_Z13 && TUNE_DEFAULT
320 config MARCH_Z14_TUNE
321 def_bool TUNE_Z14 || MARCH_Z14 && TUNE_DEFAULT
324 prompt "Tune code generation"
327 Cause the compiler to tune (-mtune) the generated code for a machine.
328 This will make the code run faster on the selected machine but
329 somewhat slower on other machines.
330 This option only changes how the compiler emits instructions, not the
331 selection of instructions itself, so the resulting kernel will run on
337 Tune the generated code for the target processor for which the kernel
341 bool "IBM zSeries model z800 and z900"
344 bool "IBM zSeries model z890 and z990"
350 bool "IBM System z10"
353 bool "IBM zEnterprise 114 and 196"
356 bool "IBM zBC12 and zEC12"
371 prompt "Kernel support for 31 bit emulation"
372 select COMPAT_BINFMT_ELF if BINFMT_ELF
373 select ARCH_WANT_OLD_COMPAT_IPC
374 select COMPAT_OLD_SIGACTION
377 Select this option if you want to enable your system kernel to
378 handle system-calls from ELF binaries for 31 bit ESA. This option
379 (and some other stuff like libraries and such) is needed for
380 executing 31 bit applications. It is safe to say "Y".
382 config SYSVIPC_COMPAT
383 def_bool y if COMPAT && SYSVIPC
387 prompt "Symmetric multi-processing support"
389 This enables support for systems with more than one CPU. If you have
390 a system with only one CPU, like most personal computers, say N. If
391 you have a system with more than one CPU, say Y.
393 If you say N here, the kernel will run on uni- and multiprocessor
394 machines, but will use only one CPU of a multiprocessor machine. If
395 you say Y here, the kernel will run on many, but not all,
396 uniprocessor machines. On a uniprocessor machine, the kernel
397 will run faster if you say N here.
399 See also the SMP-HOWTO available at
400 <http://www.tldp.org/docs.html#howto>.
402 Even if you don't know what to do here, say Y.
405 int "Maximum number of CPUs (2-512)"
410 This allows you to specify the maximum number of CPUs which this
411 kernel will support. The maximum supported value is 512 and the
412 minimum value which makes sense is 2.
414 This is purely to save memory - each supported CPU adds
415 approximately sixteen kilobytes to the kernel image.
419 prompt "Support for hot-pluggable CPUs"
422 Say Y here to be able to turn CPUs off and on. CPUs
423 can be controlled through /sys/devices/system/cpu/cpu#.
424 Say N if you want to disable CPU hotplug.
426 # Some NUMA nodes have memory ranges that span
427 # other nodes. Even though a pfn is valid and
428 # between a node's start and end pfns, it may not
429 # reside on that node. See memmap_init_zone()
430 # for details. <- They meant memory holes!
431 config NODES_SPAN_OTHER_NODES
436 depends on SMP && SCHED_TOPOLOGY
441 This option adds NUMA support to the kernel.
443 An operation mode can be selected by appending
444 numa=<method> to the kernel command line.
446 The default behaviour is identical to appending numa=plain to
447 the command line. This will create just one node with all
448 available memory and all CPUs in it.
451 int "Maximum NUMA nodes (as a power of 2)"
456 Specify the maximum number of NUMA nodes available on the target
457 system. Increases memory reserved to accommodate various tables.
459 menu "Select NUMA modes"
463 bool "NUMA emulation"
466 Numa emulation mode will split the available system memory into
467 equal chunks which then are distributed over the configured number
468 of nodes in a round-robin manner.
470 The number of fake nodes is limited by the number of available memory
471 chunks (i.e. memory size / fake size) and the number of supported
474 The CPUs are assigned to the nodes in a way that partially respects
475 the original machine topology (if supported by the machine).
476 Fair distribution of the CPUs is not guaranteed.
479 hex "NUMA emulation memory chunk size"
481 range 0x400000 0x100000000
484 Select the default size by which the memory is chopped and then
485 assigned to emulated NUMA nodes.
487 This can be overridden by specifying
491 on the kernel command line where also suffixes K, M, G, and T are
508 config SCHED_TOPOLOGY
510 prompt "Topology scheduler support"
517 Topology scheduler support improves the CPU scheduler's decision
518 making when dealing with machines that have multi-threading,
519 multiple cores or multiple books.
521 source "kernel/Kconfig.hz"
528 bool "kexec file based system call"
532 depends on CRYPTO_SHA256
533 depends on CRYPTO_SHA256_S390
535 Enable the kexec file based system call. In contrast to the normal
536 kexec system call this system call takes file descriptors for the
537 kernel and initramfs as arguments.
539 config ARCH_HAS_KEXEC_PURGATORY
541 depends on KEXEC_FILE
545 prompt "s390 architectural random number generation API"
547 Enable the s390 architectural random number generation API
548 to provide random data for all consumers within the Linux
551 When enabled the arch_random_* functions declared in linux/random.h
552 are implemented. The implementation is based on the s390 CPACF
553 instruction subfunction TRNG which provides a real true random
560 prompt "Enable modified branch prediction for the kernel by default"
562 If this option is selected the kernel will switch to a modified
563 branch prediction mode if the firmware interface is available.
564 The modified branch prediction mode improves the behaviour in
565 regard to speculative execution.
567 With the option enabled the kernel parameter "nobp=0" or "nospec"
568 can be used to run the kernel in the normal branch prediction mode.
570 With the option disabled the modified branch prediction mode is
571 enabled with the "nobp=1" kernel parameter.
577 prompt "Avoid speculative indirect branches in the kernel"
579 Compile the kernel with the expoline compiler options to guard
580 against kernel-to-user data leaks by avoiding speculative indirect
582 Requires a compiler with -mindirect-branch=thunk support for full
583 protection. The kernel may run slower.
588 prompt "Expoline default"
590 default EXPOLINE_FULL
593 bool "spectre_v2=off"
596 bool "spectre_v2=auto"
607 config ARCH_SPARSEMEM_ENABLE
609 select SPARSEMEM_VMEMMAP_ENABLE
610 select SPARSEMEM_VMEMMAP
612 config ARCH_SPARSEMEM_DEFAULT
615 config ARCH_SELECT_MEMORY_MODEL
618 config ARCH_ENABLE_MEMORY_HOTPLUG
619 def_bool y if SPARSEMEM
621 config ARCH_ENABLE_MEMORY_HOTREMOVE
624 config ARCH_ENABLE_SPLIT_PMD_PTLOCK
627 config FORCE_MAX_ZONEORDER
631 config MAX_PHYSMEM_BITS
632 int "Maximum size of supported physical memory in bits (42-53)"
636 This option specifies the maximum supported size of physical memory
637 in bits. Supported is any size between 2^42 (4TB) and 2^53 (8PB).
638 Increasing the number of bits also increases the kernel image size.
639 By default 46 bits (64TB) are supported.
643 prompt "Pack kernel stack"
645 This option enables the compiler option -mkernel-backchain if it
646 is available. If the option is available the compiler supports
647 the new stack layout which dramatically reduces the minimum stack
648 frame size. With an old compiler a non-leaf function needs a
649 minimum of 96 bytes on 31 bit and 160 bytes on 64 bit. With
650 -mkernel-backchain the minimum size drops to 16 byte on 31 bit
651 and 24 byte on 64 bit.
653 Say Y if you are unsure.
657 depends on !VMAP_STACK
658 prompt "Detect kernel stack overflow"
660 This option enables the compiler option -mstack-guard and
661 -mstack-size if they are available. If the compiler supports them
662 it will emit additional code to each function prolog to trigger
663 an illegal operation if the kernel stack is about to overflow.
665 Say N if you are unsure.
668 int "Size of the guard area (128-1024)"
670 depends on CHECK_STACK
673 This allows you to specify the size of the guard area at the lower
674 end of the kernel stack. If the kernel stack points into the guard
675 area on function entry an illegal operation is triggered. The size
676 needs to be a power of 2. Please keep in mind that the size of an
677 interrupt frame is 184 bytes for 31 bit and 328 bytes on 64 bit.
678 The minimum size for the stack guard should be 256 for 31 bit and
681 config WARN_DYNAMIC_STACK
683 prompt "Emit compiler warnings for function with dynamic stack usage"
685 This option enables the compiler option -mwarn-dynamicstack. If the
686 compiler supports this options generates warnings for functions
687 that dynamically allocate stack space using alloca.
689 Say N if you are unsure.
697 prompt "QDIO support"
699 This driver provides the Queued Direct I/O base support for
702 To compile this driver as a module, choose M here: the
703 module will be called qdio.
712 select NEED_DMA_MAP_STATE
713 select NEED_SG_DMA_LENGTH
720 config PCI_NR_FUNCTIONS
721 int "Maximum number of PCI functions (1-4096)"
725 This allows you to specify the maximum number of PCI functions which
726 this kernel will support.
728 source "drivers/pci/Kconfig"
740 prompt "Support for CHSC subchannels"
742 This driver allows usage of CHSC subchannels. A CHSC subchannel
743 is usually present on LPAR only.
744 The driver creates a device /dev/chsc, which may be used to
745 obtain I/O configuration information about the machine and
746 to issue asynchronous chsc commands (DANGEROUS).
747 You will usually only want to use this interface on a special
748 LPAR designated for system management.
750 To compile this driver as a module, choose M here: the
751 module will be called chsc_sch.
757 prompt "SCM bus driver"
759 Bus driver for Storage Class Memory.
763 prompt "Support for EADM subchannels"
766 This driver allows usage of EADM subchannels. EADM subchannels act
767 as a communication vehicle for SCM increments.
769 To compile this driver as a module, choose M here: the
770 module will be called eadm_sch.
774 prompt "Support for VFIO-CCW subchannels"
775 depends on S390_CCW_IOMMU && VFIO_MDEV
777 This driver allows usage of I/O subchannels via VFIO-CCW.
779 To compile this driver as a module, choose M here: the
780 module will be called vfio_ccw.
784 prompt "VFIO support for AP devices"
785 depends on S390_AP_IOMMU && VFIO_MDEV_DEVICE && KVM
787 This driver grants access to Adjunct Processor (AP) devices
788 via the VFIO mediated device interface.
790 To compile this driver as a module, choose M here: the module
791 will be called vfio_ap.
798 bool "kernel crash dumps"
802 Generate crash dump after being started by kexec.
803 Crash dump kernels are loaded in the main kernel with kexec-tools
804 into a specially reserved region and then later executed after
805 a crash by kdump/kexec.
806 Refer to <file:Documentation/s390/zfcpdump.txt> for more details on this.
807 This option also enables s390 zfcpdump.
808 See also <file:Documentation/s390/zfcpdump.txt>
814 prompt "Enable seccomp to safely compute untrusted bytecode"
817 This kernel feature is useful for number crunching applications
818 that may need to compute untrusted bytecode during their
819 execution. By using pipes or other transports made available to
820 the process as file descriptors supporting the read/write
821 syscalls, it's possible to isolate those applications in
822 their own address space using seccomp. Once seccomp is
823 enabled via /proc/<pid>/seccomp, it cannot be disabled
824 and the task is only allowed to execute a few safe syscalls
825 defined by each seccomp mode.
829 menu "Power Management"
831 config ARCH_HIBERNATION_POSSIBLE
834 source "kernel/power/Kconfig"
846 default (SMC || CCWGROUP)
848 menu "Virtualization"
852 prompt "Pseudo page fault support"
854 Select this option, if you want to use PFAULT pseudo page fault
855 handling under VM. If running native or in LPAR, this option
856 has no effect. If your VM does not support PFAULT, PAGEEX
857 pseudo page fault handling will be used.
858 Note that VM 4.2 supports PFAULT but has a bug in its
859 implementation that causes some problems.
860 Everybody who wants to run Linux under VM != VM4.2 should select
865 prompt "Cooperative memory management"
867 Select this option, if you want to enable the kernel interface
868 to reduce the memory size of the system. This is accomplished
869 by allocating pages of memory and put them "on hold". This only
870 makes sense for a system running under VM where the unused pages
871 will be reused by VM for other guest systems. The interface
872 allows an external monitor to balance memory of many systems.
873 Everybody who wants to run Linux under VM should select this
878 prompt "IUCV special message interface to cooperative memory management"
879 depends on CMM && (SMSGIUCV=y || CMM=SMSGIUCV)
881 Select this option to enable the special message interface to
882 the cooperative memory management.
886 prompt "Linux - VM Monitor Stream, base infrastructure"
889 This provides a kernel interface for creating and updating z/VM APPLDATA
890 monitor records. The monitor records are updated at certain time
891 intervals, once the timer is started.
892 Writing 1 or 0 to /proc/appldata/timer starts(1) or stops(0) the timer,
893 i.e. enables or disables monitoring on the Linux side.
894 A custom interval value (in seconds) can be written to
895 /proc/appldata/interval.
897 Defaults are 60 seconds interval and timer off.
898 The /proc entries can also be read from, showing the current settings.
902 prompt "Monitor memory management statistics"
903 depends on APPLDATA_BASE && VM_EVENT_COUNTERS
905 This provides memory management related data to the Linux - VM Monitor
906 Stream, like paging/swapping rate, memory utilisation, etc.
907 Writing 1 or 0 to /proc/appldata/memory creates(1) or removes(0) a z/VM
908 APPLDATA monitor record, i.e. enables or disables monitoring this record
912 The /proc entry can also be read from, showing the current settings.
914 This can also be compiled as a module, which will be called
919 prompt "Monitor OS statistics"
920 depends on APPLDATA_BASE
922 This provides OS related data to the Linux - VM Monitor Stream, like
923 CPU utilisation, etc.
924 Writing 1 or 0 to /proc/appldata/os creates(1) or removes(0) a z/VM
925 APPLDATA monitor record, i.e. enables or disables monitoring this record
929 This can also be compiled as a module, which will be called
932 config APPLDATA_NET_SUM
934 prompt "Monitor overall network statistics"
935 depends on APPLDATA_BASE && NET
937 This provides network related data to the Linux - VM Monitor Stream,
938 currently there is only a total sum of network I/O statistics, no
940 Writing 1 or 0 to /proc/appldata/net_sum creates(1) or removes(0) a z/VM
941 APPLDATA monitor record, i.e. enables or disables monitoring this record
945 This can also be compiled as a module, which will be called
950 prompt "s390 hypervisor file system support"
951 select SYS_HYPERVISOR
953 This is a virtual file system intended to provide accounting
954 information in an s390 hypervisor environment.
956 source "arch/s390/kvm/Kconfig"
960 prompt "s390 support for virtio devices"
962 select VIRTUALIZATION
964 select VIRTIO_CONSOLE
966 Enabling this option adds support for virtio based paravirtual device
969 Select this option if you want to run the kernel as a guest under