arch/s390/Kconfig v5.13-rc1

• HAVE_LIVEPATCH
• LIVEPATCH Kernel Live Patching

Menu [Processor type and features]

• MARCH_Z900 IBM zSeries model z800 and z900
• MARCH_Z990 IBM zSeries model z890 and z990
• MARCH_Z9_109 IBM System z9
• MARCH_Z10 IBM System z10
• MARCH_Z196 IBM zEnterprise 114 and 196
• MARCH_ZEC12 IBM zBC12 and zEC12
• MARCH_Z13 IBM z13s and z13
• MARCH_Z14 IBM z14 ZR1 and z14
• MARCH_Z15 IBM z15
• MARCH_Z15_TUNE Tune code generation
• TUNE_DEFAULT Default
• COMPAT Kernel support for 31 bit emulation
• NR_CPUS Maximum number of CPUs (2-512)
• NUMA NUMA support
• SCHED_TOPOLOGY Topology scheduler support
• None Timer frequency
• KEXEC_FILE kexec file based system call
• KEXEC_SIG Verify kernel signature during kexec_file_load() syscall
• ARCH_RANDOM s390 architectural random number generation API
• KERNEL_NOBP Enable modified branch prediction for the kernel by default
• EXPOLINE Avoid speculative indirect branches in the kernel
• RELOCATABLE Build a relocatable kernel
• RANDOMIZE_BASE Randomize the address of the kernel image (KASLR)

Menu [Memory setup]

• MAX_PHYSMEM_BITS Maximum size of supported physical memory in bits (42-53)
• PACK_STACK Pack kernel stack
• CHECK_STACK Detect kernel stack overflow
• STACK_GUARD Size of the guard area (128-1024)
• WARN_DYNAMIC_STACK Emit compiler warnings for function with dynamic stack usage

Menu [I/O subsystem]

• QDIO QDIO support
• PCI_NR_FUNCTIONS Maximum number of PCI functions (1-4096)
• CHSC_SCH Support for CHSC subchannels
• SCM_BUS SCM bus driver
• EADM_SCH Support for EADM subchannels
• VFIO_CCW Support for VFIO-CCW subchannels
• VFIO_AP VFIO support for AP devices

Menu [Dump support]

• CRASH_DUMP kernel crash dumps

Menu [Virtualization]

• PROTECTED_VIRTUALIZATION_GUEST Protected virtualization guest support
• PFAULT Pseudo page fault support
• CMM Cooperative memory management
• CMM_IUCV IUCV special message interface to cooperative memory management
• APPLDATA_BASE Linux - VM Monitor Stream, base infrastructure
• APPLDATA_MEM Monitor memory management statistics
• APPLDATA_OS Monitor OS statistics
• APPLDATA_NET_SUM Monitor overall network statistics
• S390_HYPFS_FS s390 hypervisor file system support
• VIRTUALIZATION KVM
• KVM Kernel-based Virtual Machine (KVM) support
• KVM_S390_UCONTROL Userspace controlled virtual machines
• S390_GUEST s390 support for virtio devices

Menu [Selftests]

• S390_UNWIND_SELFTEST Test unwind functions