diff options
Diffstat (limited to 'arch/s390/Kconfig')
| -rw-r--r-- | arch/s390/Kconfig | 391 |
1 files changed, 143 insertions, 248 deletions
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index 8abe77536d9d..de575af02ffe 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -2,9 +2,6 @@ config MMU def_bool y -config ZONE_DMA - def_bool y - config CPU_BIG_ENDIAN def_bool y @@ -30,14 +27,11 @@ config GENERIC_BUG_RELATIVE_POINTERS def_bool y config GENERIC_LOCKBREAK - def_bool y if PREEMPTTION + def_bool y if PREEMPTION config PGSTE def_bool y if KVM -config ARCH_SUPPORTS_DEBUG_PAGEALLOC - def_bool y - config AUDIT_ARCH def_bool y @@ -53,25 +47,40 @@ config ARCH_SUPPORTS_UPROBES config KASAN_SHADOW_OFFSET hex depends on KASAN - default 0x18000000000000 if KASAN_S390_4_LEVEL_PAGING - default 0x30000000000 + default 0x1C000000000000 config S390 def_bool y + # + # Note: keep this list sorted alphabetically + # + imply IMA_SECURE_AND_OR_TRUSTED_BOOT + select ALTERNATE_USER_ADDRESS_SPACE + select ARCH_32BIT_USTAT_F_TINODE select ARCH_BINFMT_ELF_STATE + select ARCH_CORRECT_STACKTRACE_ON_KRETPROBE + select ARCH_ENABLE_MEMORY_HOTPLUG if SPARSEMEM + select ARCH_ENABLE_MEMORY_HOTREMOVE + select ARCH_ENABLE_SPLIT_PMD_PTLOCK if PGTABLE_LEVELS > 2 + select ARCH_HAS_CURRENT_STACK_POINTER + select ARCH_HAS_DEBUG_VM_PGTABLE + select ARCH_HAS_DEBUG_WX select ARCH_HAS_DEVMEM_IS_ALLOWED select ARCH_HAS_ELF_RANDOMIZE + select ARCH_HAS_FORCE_DMA_UNENCRYPTED select ARCH_HAS_FORTIFY_SOURCE select ARCH_HAS_GCOV_PROFILE_ALL select ARCH_HAS_GIGANTIC_PAGE select ARCH_HAS_KCOV select ARCH_HAS_MEM_ENCRYPT select ARCH_HAS_PTE_SPECIAL + select ARCH_HAS_SCALED_CPUTIME select ARCH_HAS_SET_MEMORY select ARCH_HAS_STRICT_KERNEL_RWX select ARCH_HAS_STRICT_MODULE_RWX select ARCH_HAS_SYSCALL_WRAPPER select ARCH_HAS_UBSAN_SANITIZE_ALL + select ARCH_HAS_VDSO_DATA select ARCH_HAVE_NMI_SAFE_CMPXCHG select ARCH_INLINE_READ_LOCK select ARCH_INLINE_READ_LOCK_BH @@ -101,53 +110,66 @@ config S390 select ARCH_INLINE_WRITE_UNLOCK_BH select ARCH_INLINE_WRITE_UNLOCK_IRQ select ARCH_INLINE_WRITE_UNLOCK_IRQRESTORE - select ARCH_KEEP_MEMBLOCK - select ARCH_SAVE_PAGE_KEYS if HIBERNATION select ARCH_STACKWALK select ARCH_SUPPORTS_ATOMIC_RMW + select ARCH_SUPPORTS_DEBUG_PAGEALLOC + select ARCH_SUPPORTS_HUGETLBFS select ARCH_SUPPORTS_NUMA_BALANCING select ARCH_USE_BUILTIN_BSWAP select ARCH_USE_CMPXCHG_LOCKREF select ARCH_WANTS_DYNAMIC_TASK_STRUCT + select ARCH_WANTS_NO_INSTR + select ARCH_WANT_DEFAULT_BPF_JIT select ARCH_WANT_IPC_PARSE_VERSION select BUILDTIME_TABLE_SORT select CLONE_BACKWARDS2 + select DMA_OPS if PCI select DYNAMIC_FTRACE if FUNCTION_TRACER - select GENERIC_CLOCKEVENTS + select GCC12_NO_ARRAY_BOUNDS + select GENERIC_ALLOCATOR select GENERIC_CPU_AUTOPROBE select GENERIC_CPU_VULNERABILITIES - select GENERIC_FIND_FIRST_BIT + select GENERIC_ENTRY + select GENERIC_GETTIMEOFDAY + select GENERIC_PTDUMP select GENERIC_SMP_IDLE_THREAD select GENERIC_TIME_VSYSCALL + select GENERIC_VDSO_TIME_NS select HAVE_ALIGNED_STRUCT_PAGE if SLUB select HAVE_ARCH_AUDITSYSCALL select HAVE_ARCH_JUMP_LABEL select HAVE_ARCH_JUMP_LABEL_RELATIVE select HAVE_ARCH_KASAN select HAVE_ARCH_KASAN_VMALLOC - select CPU_NO_EFFICIENT_FFS if !HAVE_MARCH_Z9_109_FEATURES + select HAVE_ARCH_KCSAN + select HAVE_ARCH_KFENCE + select HAVE_ARCH_RANDOMIZE_KSTACK_OFFSET select HAVE_ARCH_SECCOMP_FILTER select HAVE_ARCH_SOFT_DIRTY select HAVE_ARCH_TRACEHOOK select HAVE_ARCH_TRANSPARENT_HUGEPAGE select HAVE_ARCH_VMAP_STACK select HAVE_ASM_MODVERSIONS - select HAVE_EBPF_JIT if PACK_STACK && HAVE_MARCH_Z196_FEATURES select HAVE_CMPXCHG_DOUBLE select HAVE_CMPXCHG_LOCAL - select HAVE_COPY_THREAD_TLS select HAVE_DEBUG_KMEMLEAK select HAVE_DMA_CONTIGUOUS select HAVE_DYNAMIC_FTRACE + select HAVE_DYNAMIC_FTRACE_WITH_ARGS + select HAVE_DYNAMIC_FTRACE_WITH_DIRECT_CALLS select HAVE_DYNAMIC_FTRACE_WITH_REGS - select HAVE_FAST_GUP + select HAVE_EBPF_JIT if HAVE_MARCH_Z196_FEATURES select HAVE_EFFICIENT_UNALIGNED_ACCESS + select HAVE_FAST_GUP select HAVE_FENTRY select HAVE_FTRACE_MCOUNT_RECORD + select HAVE_FUNCTION_ARG_ACCESS_API + select HAVE_FUNCTION_ERROR_INJECTION select HAVE_FUNCTION_GRAPH_TRACER select HAVE_FUNCTION_TRACER - select HAVE_FUTEX_CMPXCHG if FUTEX select HAVE_GCC_PLUGINS + select HAVE_GENERIC_VDSO + select HAVE_IOREMAP_PROT if PCI select HAVE_KERNEL_BZIP2 select HAVE_KERNEL_GZIP select HAVE_KERNEL_LZ4 @@ -155,29 +177,34 @@ config S390 select HAVE_KERNEL_LZO select HAVE_KERNEL_UNCOMPRESSED select HAVE_KERNEL_XZ + select HAVE_KERNEL_ZSTD select HAVE_KPROBES select HAVE_KPROBES_ON_FTRACE select HAVE_KRETPROBES select HAVE_KVM select HAVE_LIVEPATCH - select HAVE_PERF_REGS - select HAVE_PERF_USER_STACK_DUMP - select HAVE_MEMBLOCK_NODE_MAP select HAVE_MEMBLOCK_PHYS_MAP - select MMU_GATHER_NO_GATHER select HAVE_MOD_ARCH_SPECIFIC + select HAVE_NMI select HAVE_NOP_MCOUNT - select HAVE_OPROFILE select HAVE_PCI select HAVE_PERF_EVENTS - select MMU_GATHER_RCU_TABLE_FREE + select HAVE_PERF_REGS + select HAVE_PERF_USER_STACK_DUMP select HAVE_REGS_AND_STACK_ACCESS_API select HAVE_RELIABLE_STACKTRACE select HAVE_RSEQ + select HAVE_SAMPLE_FTRACE_DIRECT + select HAVE_SAMPLE_FTRACE_DIRECT_MULTI + select HAVE_SOFTIRQ_ON_OWN_STACK select HAVE_SYSCALL_TRACEPOINTS select HAVE_VIRT_CPU_ACCOUNTING + select HAVE_VIRT_CPU_ACCOUNTING_IDLE select IOMMU_HELPER if PCI select IOMMU_SUPPORT if PCI + select MMU_GATHER_NO_GATHER + select MMU_GATHER_RCU_TABLE_FREE + select MMU_GATHER_MERGE_VMAS select MODULES_USE_ELF_RELA select NEED_DMA_MAP_STATE if PCI select NEED_SG_DMA_LENGTH if PCI @@ -185,17 +212,16 @@ config S390 select OLD_SIGSUSPEND3 select PCI_DOMAINS if PCI select PCI_MSI if PCI + select PCI_MSI_ARCH_FALLBACKS if PCI_MSI select SPARSE_IRQ + select SWIOTLB select SYSCTL_EXCEPTION_TRACE select THREAD_INFO_IN_TASK + select TRACE_IRQFLAGS_SUPPORT select TTY select VIRT_CPU_ACCOUNTING - select ARCH_HAS_SCALED_CPUTIME - select HAVE_NMI - select ARCH_HAS_FORCE_DMA_UNENCRYPTED - select SWIOTLB - select GENERIC_ALLOCATOR - + select ZONE_DMA + # Note: keep the above list sorted alphabetically config SCHED_OMIT_FRAME_POINTER def_bool y @@ -208,20 +234,8 @@ source "kernel/livepatch/Kconfig" menu "Processor type and features" -config HAVE_MARCH_Z900_FEATURES - def_bool n - -config HAVE_MARCH_Z990_FEATURES - def_bool n - select HAVE_MARCH_Z900_FEATURES - -config HAVE_MARCH_Z9_109_FEATURES - def_bool n - select HAVE_MARCH_Z990_FEATURES - config HAVE_MARCH_Z10_FEATURES def_bool n - select HAVE_MARCH_Z9_109_FEATURES config HAVE_MARCH_Z196_FEATURES def_bool n @@ -243,45 +257,21 @@ config HAVE_MARCH_Z15_FEATURES def_bool n select HAVE_MARCH_Z14_FEATURES +config HAVE_MARCH_Z16_FEATURES + def_bool n + select HAVE_MARCH_Z15_FEATURES + choice prompt "Processor type" default MARCH_Z196 -config MARCH_Z900 - bool "IBM zSeries model z800 and z900" - select HAVE_MARCH_Z900_FEATURES - depends on $(cc-option,-march=z900) - help - Select this to enable optimizations for model z800/z900 (2064 and - 2066 series). This will enable some optimizations that are not - available on older ESA/390 (31 Bit) only CPUs. - -config MARCH_Z990 - bool "IBM zSeries model z890 and z990" - select HAVE_MARCH_Z990_FEATURES - depends on $(cc-option,-march=z990) - help - Select this to enable optimizations for model z890/z990 (2084 and - 2086 series). The kernel will be slightly faster but will not work - on older machines. - -config MARCH_Z9_109 - bool "IBM System z9" - select HAVE_MARCH_Z9_109_FEATURES - depends on $(cc-option,-march=z9-109) - help - Select this to enable optimizations for IBM System z9 (2094 and - 2096 series). The kernel will be slightly faster but will not work - on older machines. - config MARCH_Z10 bool "IBM System z10" select HAVE_MARCH_Z10_FEATURES depends on $(cc-option,-march=z10) help - Select this to enable optimizations for IBM System z10 (2097 and - 2098 series). The kernel will be slightly faster but will not work - on older machines. + Select this to enable optimizations for IBM System z10 (2097 and 2098 + series). This is the oldest machine generation currently supported. config MARCH_Z196 bool "IBM zEnterprise 114 and 196" @@ -328,16 +318,15 @@ config MARCH_Z15 and 8561 series). The kernel will be slightly faster but will not work on older machines. -endchoice - -config MARCH_Z900_TUNE - def_bool TUNE_Z900 || MARCH_Z900 && TUNE_DEFAULT - -config MARCH_Z990_TUNE - def_bool TUNE_Z990 || MARCH_Z990 && TUNE_DEFAULT +config MARCH_Z16 + bool "IBM z16" + select HAVE_MARCH_Z16_FEATURES + depends on $(cc-option,-march=z16) + help + Select this to enable optimizations for IBM z16 (3931 and + 3932 series). -config MARCH_Z9_109_TUNE - def_bool TUNE_Z9_109 || MARCH_Z9_109 && TUNE_DEFAULT +endchoice config MARCH_Z10_TUNE def_bool TUNE_Z10 || MARCH_Z10 && TUNE_DEFAULT @@ -357,6 +346,9 @@ config MARCH_Z14_TUNE config MARCH_Z15_TUNE def_bool TUNE_Z15 || MARCH_Z15 && TUNE_DEFAULT +config MARCH_Z16_TUNE + def_bool TUNE_Z16 || MARCH_Z16 && TUNE_DEFAULT + choice prompt "Tune code generation" default TUNE_DEFAULT @@ -374,21 +366,8 @@ config TUNE_DEFAULT Tune the generated code for the target processor for which the kernel will be compiled. -config TUNE_Z900 - bool "IBM zSeries model z800 and z900" - depends on $(cc-option,-mtune=z900) - -config TUNE_Z990 - bool "IBM zSeries model z890 and z990" - depends on $(cc-option,-mtune=z990) - -config TUNE_Z9_109 - bool "IBM System z9" - depends on $(cc-option,-mtune=z9-109) - config TUNE_Z10 bool "IBM System z10" - depends on $(cc-option,-mtune=z10) config TUNE_Z196 bool "IBM zEnterprise 114 and 196" @@ -410,28 +389,37 @@ config TUNE_Z15 bool "IBM z15" depends on $(cc-option,-mtune=z15) +config TUNE_Z16 + bool "IBM z16" + depends on $(cc-option,-mtune=z16) + endchoice config 64BIT def_bool y +config COMMAND_LINE_SIZE + int "Maximum size of kernel command line" + default 4096 + range 896 1048576 + help + This allows you to specify the maximum length of the kernel command + line. + config COMPAT def_bool y prompt "Kernel support for 31 bit emulation" - select COMPAT_BINFMT_ELF if BINFMT_ELF select ARCH_WANT_OLD_COMPAT_IPC select COMPAT_OLD_SIGACTION select HAVE_UID16 depends on MULTIUSER + depends on !CC_IS_CLANG help Select this option if you want to enable your system kernel to handle system-calls from ELF binaries for 31 bit ESA. This option (and some other stuff like libraries and such) is needed for executing 31 bit applications. It is safe to say "Y". -config SYSVIPC_COMPAT - def_bool y if COMPAT && SYSVIPC - config SMP def_bool y @@ -450,14 +438,6 @@ config NR_CPUS config HOTPLUG_CPU def_bool y -# Some NUMA nodes have memory ranges that span -# other nodes. Even though a pfn is valid and -# between a node's start and end pfns, it may not -# reside on that node. See memmap_init_zone() -# for details. <- They meant memory holes! -config NODES_SPAN_OTHER_NODES - def_bool NUMA - config NUMA bool "NUMA support" depends on SCHED_TOPOLOGY @@ -467,58 +447,10 @@ config NUMA This option adds NUMA support to the kernel. - An operation mode can be selected by appending - numa=<method> to the kernel command line. - - The default behaviour is identical to appending numa=plain to - the command line. This will create just one node with all - available memory and all CPUs in it. - config NODES_SHIFT - int "Maximum NUMA nodes (as a power of 2)" - range 1 10 - depends on NUMA - default "4" - help - Specify the maximum number of NUMA nodes available on the target - system. Increases memory reserved to accommodate various tables. - -menu "Select NUMA modes" + int depends on NUMA - -config NUMA_EMU - bool "NUMA emulation" - default y - help - Numa emulation mode will split the available system memory into - equal chunks which then are distributed over the configured number - of nodes in a round-robin manner. - - The number of fake nodes is limited by the number of available memory - chunks (i.e. memory size / fake size) and the number of supported - nodes in the kernel. - - The CPUs are assigned to the nodes in a way that partially respects - the original machine topology (if supported by the machine). - Fair distribution of the CPUs is not guaranteed. - -config EMU_SIZE - hex "NUMA emulation memory chunk size" - default 0x10000000 - range 0x400000 0x100000000 - depends on NUMA_EMU - help - Select the default size by which the memory is chopped and then - assigned to emulated NUMA nodes. - - This can be overridden by specifying - - emu_size=<n> - - on the kernel command line where also suffixes K, M, G, and T are - supported. - -endmenu + default "1" config SCHED_SMT def_bool n @@ -553,7 +485,6 @@ config KEXEC config KEXEC_FILE bool "kexec file based system call" select KEXEC_CORE - select BUILD_BIN2C depends on CRYPTO depends on CRYPTO_SHA256 depends on CRYPTO_SHA256_S390 @@ -577,21 +508,6 @@ config KEXEC_SIG verification for the corresponding kernel image type being loaded in order for this to work. -config ARCH_RANDOM - def_bool y - prompt "s390 architectural random number generation API" - help - Enable the s390 architectural random number generation API - to provide random data for all consumers within the Linux - kernel. - - When enabled the arch_random_* functions declared in linux/random.h - are implemented. The implementation is based on the s390 CPACF - instruction subfunction TRNG which provides a real true random - number generator. - - If unsure, say Y. - config KERNEL_NOBP def_bool n prompt "Enable modified branch prediction for the kernel by default" @@ -611,6 +527,7 @@ config KERNEL_NOBP config EXPOLINE def_bool n + depends on $(cc-option,-mindirect-branch=thunk) prompt "Avoid speculative indirect branches in the kernel" help Compile the kernel with the expoline compiler options to guard @@ -621,6 +538,19 @@ config EXPOLINE If unsure, say N. +config EXPOLINE_EXTERN + def_bool n + depends on EXPOLINE + depends on CC_IS_GCC && GCC_VERSION >= 110200 + depends on $(success,$(srctree)/arch/s390/tools/gcc-thunk-extern.sh $(CC)) + prompt "Generate expolines as extern functions." + help + This option is required for some tooling like kpatch. The kernel is + compiled with -mindirect-branch=thunk-extern and requires a newer + compiler. + + If unsure, say N. + choice prompt "Expoline default" depends on EXPOLINE @@ -638,9 +568,7 @@ config EXPOLINE_FULL endchoice config RELOCATABLE - bool "Build a relocatable kernel" - select MODULE_REL_CRCS if MODVERSIONS - default y + def_bool y help This builds a kernel image that retains relocation information so it can be loaded at an arbitrary address. @@ -649,10 +577,11 @@ config RELOCATABLE bootup process. The relocations make the kernel image about 15% larger (compressed 10%), but are discarded at runtime. + Note: this option exists only for documentation purposes, please do + not remove it. config RANDOMIZE_BASE bool "Randomize the address of the kernel image (KASLR)" - depends on RELOCATABLE default y help In support of Kernel Address Space Layout Randomization (KASLR), @@ -672,19 +601,6 @@ config ARCH_SPARSEMEM_ENABLE config ARCH_SPARSEMEM_DEFAULT def_bool y -config ARCH_ENABLE_MEMORY_HOTPLUG - def_bool y if SPARSEMEM - -config ARCH_ENABLE_MEMORY_HOTREMOVE - def_bool y - -config ARCH_ENABLE_SPLIT_PMD_PTLOCK - def_bool y - -config FORCE_MAX_ZONEORDER - int - default "9" - config MAX_PHYSMEM_BITS int "Maximum size of supported physical memory in bits (42-53)" range 42 53 @@ -695,20 +611,6 @@ config MAX_PHYSMEM_BITS Increasing the number of bits also increases the kernel image size. By default 46 bits (64TB) are supported. -config PACK_STACK - def_bool y - prompt "Pack kernel stack" - help - This option enables the compiler option -mkernel-backchain if it - is available. If the option is available the compiler supports - the new stack layout which dramatically reduces the minimum stack - frame size. With an old compiler a non-leaf function needs a - minimum of 96 bytes on 31 bit and 160 bytes on 64 bit. With - -mkernel-backchain the minimum size drops to 16 byte on 31 bit - and 24 byte on 64 bit. - - Say Y if you are unsure. - config CHECK_STACK def_bool y depends on !VMAP_STACK @@ -735,16 +637,6 @@ config STACK_GUARD The minimum size for the stack guard should be 256 for 31 bit and 512 for 64 bit. -config WARN_DYNAMIC_STACK - def_bool n - prompt "Emit compiler warnings for function with dynamic stack usage" - help - This option enables the compiler option -mwarn-dynamicstack. If the - compiler supports this options generates warnings for functions - that dynamically allocate stack space using alloca. - - Say N if you are unsure. - endmenu menu "I/O subsystem" @@ -752,7 +644,7 @@ menu "I/O subsystem" config QDIO def_tristate y prompt "QDIO support" - ---help--- + help This driver provides the Queued Direct I/O base support for IBM System z. @@ -766,7 +658,7 @@ if PCI config PCI_NR_FUNCTIONS int "Maximum number of PCI functions (1-4096)" range 1 4096 - default "128" + default "512" help This allows you to specify the maximum number of PCI functions which this kernel will support. @@ -823,13 +715,14 @@ config VFIO_CCW config VFIO_AP def_tristate n prompt "VFIO support for AP devices" - depends on S390_AP_IOMMU && VFIO_MDEV_DEVICE && KVM + depends on S390_AP_IOMMU && VFIO_MDEV && KVM + depends on ZCRYPT help - This driver grants access to Adjunct Processor (AP) devices - via the VFIO mediated device interface. + This driver grants access to Adjunct Processor (AP) devices + via the VFIO mediated device interface. - To compile this driver as a module, choose M here: the module - will be called vfio_ap. + To compile this driver as a module, choose M here: the module + will be called vfio_ap. endmenu @@ -849,32 +742,6 @@ config CRASH_DUMP endmenu -config SECCOMP - def_bool y - prompt "Enable seccomp to safely compute untrusted bytecode" - depends on PROC_FS - help - This kernel feature is useful for number crunching applications - that may need to compute untrusted bytecode during their - execution. By using pipes or other transports made available to - the process as file descriptors supporting the read/write - syscalls, it's possible to isolate those applications in - their own address space using seccomp. Once seccomp is - enabled via /proc/<pid>/seccomp, it cannot be disabled - and the task is only allowed to execute a few safe syscalls - defined by each seccomp mode. - - If unsure, say Y. - -menu "Power Management" - -config ARCH_HIBERNATION_POSSIBLE - def_bool y - -source "kernel/power/Kconfig" - -endmenu - config CCW def_bool y @@ -932,7 +799,7 @@ config CMM_IUCV config APPLDATA_BASE def_bool n prompt "Linux - VM Monitor Stream, base infrastructure" - depends on PROC_FS + depends on PROC_SYSCTL help This provides a kernel interface for creating and updating z/VM APPLDATA monitor records. The monitor records are updated at certain time @@ -1009,7 +876,6 @@ config S390_GUEST select TTY select VIRTUALIZATION select VIRTIO - select VIRTIO_CONSOLE help Enabling this option adds support for virtio based paravirtual device drivers on s390. @@ -1019,10 +885,15 @@ config S390_GUEST endmenu +config S390_MODULES_SANITY_TEST_HELPERS + def_bool n + menu "Selftests" config S390_UNWIND_SELFTEST def_tristate n + depends on KUNIT + default KUNIT_ALL_TESTS prompt "Test unwind functions" help This option enables s390 specific stack unwinder testing kernel @@ -1031,4 +902,28 @@ config S390_UNWIND_SELFTEST Say N if you are unsure. +config S390_KPROBES_SANITY_TEST + def_tristate n + prompt "Enable s390 specific kprobes tests" + depends on KPROBES + depends on KUNIT + help + This option enables an s390 specific kprobes test module. This option + is not useful for distributions or general kernels, but only for kernel + developers working on architecture code. + + Say N if you are unsure. + +config S390_MODULES_SANITY_TEST + def_tristate n + depends on KUNIT + default KUNIT_ALL_TESTS + prompt "Enable s390 specific modules tests" + select S390_MODULES_SANITY_TEST_HELPERS + help + This option enables an s390 specific modules test. This option is + not useful for distributions or general kernels, but only for + kernel developers working on architecture code. + + Say N if you are unsure. endmenu |