mirror of
https://github.com/torvalds/linux.git
synced 2024-11-22 12:11:40 +00:00
1ec6d09789
- Optimize ftrace and kprobes code patching and avoid stop machine for kprobes if sequential instruction fetching facility is available - Add hiperdispatch feature to dynamically adjust CPU capacity in vertical polarization to improve scheduling efficiency and overall performance. Also add infrastructure for handling warning track interrupts (WTI), allowing for graceful CPU preemption - Rework crypto code pkey module and split it into separate, independent modules for sysfs, PCKMO, CCA, and EP11, allowing modules to load only when the relevant hardware is available - Add hardware acceleration for HMAC modes and the full AES-XTS cipher, utilizing message-security assist extensions (MSA) 10 and 11. It introduces new shash implementations for HMAC-SHA224/256/384/512 and registers the hardware-accelerated AES-XTS cipher as the preferred option. Also add clear key token support - Add MSA 10 and 11 processor activity instrumentation counters to perf and update PAI Extension 1 NNPA counters - Cleanup cpu sampling facility code and rework debug/WARN_ON_ONCE statements - Add support for SHA3 performance enhancements introduced with MSA 12 - Add support for the query authentication information feature of MSA 13 and introduce the KDSA CPACF instruction. Provide query and query authentication information in sysfs, enabling tools like cpacfinfo to present this data in a human-readable form - Update kernel disassembler instructions - Always enable EXPOLINE_EXTERN if supported by the compiler to ensure kpatch compatibility - Add missing warning handling and relocated lowcore support to the early program check handler - Optimize ftrace_return_address() and avoid calling unwinder - Make modules use kernel ftrace trampolines - Strip relocs from the final vmlinux ELF file to make it roughly 2 times smaller - Dump register contents and call trace for early crashes to the console - Generate ptdump address marker array dynamically - Fix rcu_sched stalls that might occur when adding or removing large amounts of pages at once to or from the CMM balloon - Fix deadlock caused by recursive lock of the AP bus scan mutex - Unify sync and async register save areas in entry code - Cleanup debug prints in crypto code - Various cleanup and sanitizing patches for the decompressor - Various small ftrace cleanups -----BEGIN PGP SIGNATURE----- iQEzBAABCAAdFiEE3QHqV+H2a8xAv27vjYWKoQLXFBgFAmbsZawACgkQjYWKoQLX FBg+Ogf+NiKPfvI14NcTwnOHB6qz8ApPdGfN9bNVtQxtK3epeAvtj0cMonAuKpRg xckTRRd8y0guhCT7Q2+WitSgA5eYDn+u9/Ux5YuKUdUdXolQ0D64BJNtVeEFkmJj s+Lesb8cVI9T2VBZOpuF9lJigfsDALBkFroqN4MDudDeahS+qy33bAc0OoqYNXHo S6OwPK1/tEG9O/oTN2V4mN+aP0B3/dl7Msezb0gfAXQJA+WUAyMNK0RHvoG9uzaa BWAyWWYABj6woGZEAQAzXcbzkQiRPixTqZVe6e4YndXhIlEnB/Z2AQFdTpT9V7En eOmmve3QuJa0hkF9q4H/anvOMPntTg== =Xagq -----END PGP SIGNATURE----- Merge tag 's390-6.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux Pull s390 updates from Vasily Gorbik: - Optimize ftrace and kprobes code patching and avoid stop machine for kprobes if sequential instruction fetching facility is available - Add hiperdispatch feature to dynamically adjust CPU capacity in vertical polarization to improve scheduling efficiency and overall performance. Also add infrastructure for handling warning track interrupts (WTI), allowing for graceful CPU preemption - Rework crypto code pkey module and split it into separate, independent modules for sysfs, PCKMO, CCA, and EP11, allowing modules to load only when the relevant hardware is available - Add hardware acceleration for HMAC modes and the full AES-XTS cipher, utilizing message-security assist extensions (MSA) 10 and 11. It introduces new shash implementations for HMAC-SHA224/256/384/512 and registers the hardware-accelerated AES-XTS cipher as the preferred option. Also add clear key token support - Add MSA 10 and 11 processor activity instrumentation counters to perf and update PAI Extension 1 NNPA counters - Cleanup cpu sampling facility code and rework debug/WARN_ON_ONCE statements - Add support for SHA3 performance enhancements introduced with MSA 12 - Add support for the query authentication information feature of MSA 13 and introduce the KDSA CPACF instruction. Provide query and query authentication information in sysfs, enabling tools like cpacfinfo to present this data in a human-readable form - Update kernel disassembler instructions - Always enable EXPOLINE_EXTERN if supported by the compiler to ensure kpatch compatibility - Add missing warning handling and relocated lowcore support to the early program check handler - Optimize ftrace_return_address() and avoid calling unwinder - Make modules use kernel ftrace trampolines - Strip relocs from the final vmlinux ELF file to make it roughly 2 times smaller - Dump register contents and call trace for early crashes to the console - Generate ptdump address marker array dynamically - Fix rcu_sched stalls that might occur when adding or removing large amounts of pages at once to or from the CMM balloon - Fix deadlock caused by recursive lock of the AP bus scan mutex - Unify sync and async register save areas in entry code - Cleanup debug prints in crypto code - Various cleanup and sanitizing patches for the decompressor - Various small ftrace cleanups * tag 's390-6.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (84 commits) s390/crypto: Display Query and Query Authentication Information in sysfs s390/crypto: Add Support for Query Authentication Information s390/crypto: Rework RRE and RRF CPACF inline functions s390/crypto: Add KDSA CPACF Instruction s390/disassembler: Remove duplicate instruction format RSY_RDRU s390/boot: Move boot_printk() code to own file s390/boot: Use boot_printk() instead of sclp_early_printk() s390/boot: Rename decompressor_printk() to boot_printk() s390/boot: Compile all files with the same march flag s390: Use MARCH_HAS_*_FEATURES defines s390: Provide MARCH_HAS_*_FEATURES defines s390/facility: Disable compile time optimization for decompressor code s390/boot: Increase minimum architecture to z10 s390/als: Remove obsolete comment s390/sha3: Fix SHA3 selftests failures s390/pkey: Add AES xts and HMAC clear key token support s390/cpacf: Add MSA 10 and 11 new PCKMO functions s390/mm: Add cond_resched() to cmm_alloc/free_pages() s390/pai_ext: Update PAI extension 1 counters s390/pai_crypto: Add support for MSA 10 and 11 pai counters ...
1008 lines
27 KiB
Plaintext
1008 lines
27 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0
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config MMU
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def_bool y
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config CPU_BIG_ENDIAN
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def_bool y
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config LOCKDEP_SUPPORT
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def_bool y
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config STACKTRACE_SUPPORT
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def_bool y
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config ARCH_HAS_ILOG2_U32
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def_bool n
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config ARCH_HAS_ILOG2_U64
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def_bool n
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config ARCH_PROC_KCORE_TEXT
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def_bool y
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config GENERIC_HWEIGHT
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def_bool !HAVE_MARCH_Z196_FEATURES
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config GENERIC_BUG
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def_bool y if BUG
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config GENERIC_BUG_RELATIVE_POINTERS
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def_bool y
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config GENERIC_LOCKBREAK
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def_bool y if PREEMPTION
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config PGSTE
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def_bool y if KVM
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config AUDIT_ARCH
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def_bool y
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config NO_IOPORT_MAP
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def_bool y
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config PCI_QUIRKS
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def_bool n
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config ARCH_SUPPORTS_UPROBES
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def_bool y
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config KASAN_SHADOW_OFFSET
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hex
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depends on KASAN
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default 0x1C000000000000
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config S390
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def_bool y
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#
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# Note: keep this list sorted alphabetically
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#
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imply IMA_SECURE_AND_OR_TRUSTED_BOOT
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select ALTERNATE_USER_ADDRESS_SPACE
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select ARCH_32BIT_USTAT_F_TINODE
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select ARCH_BINFMT_ELF_STATE
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select ARCH_CORRECT_STACKTRACE_ON_KRETPROBE
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select ARCH_ENABLE_MEMORY_HOTPLUG if SPARSEMEM
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select ARCH_ENABLE_MEMORY_HOTREMOVE
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select ARCH_ENABLE_SPLIT_PMD_PTLOCK if PGTABLE_LEVELS > 2
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select ARCH_HAS_CURRENT_STACK_POINTER
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select ARCH_HAS_DEBUG_VIRTUAL
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select ARCH_HAS_DEBUG_VM_PGTABLE
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select ARCH_HAS_DEBUG_WX
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select ARCH_HAS_DEVMEM_IS_ALLOWED
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select ARCH_HAS_DMA_OPS if PCI
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select ARCH_HAS_ELF_RANDOMIZE
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select ARCH_HAS_FORCE_DMA_UNENCRYPTED
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select ARCH_HAS_FORTIFY_SOURCE
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select ARCH_HAS_GCOV_PROFILE_ALL
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select ARCH_HAS_GIGANTIC_PAGE
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select ARCH_HAS_KCOV
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select ARCH_HAS_MEMBARRIER_SYNC_CORE
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select ARCH_HAS_MEM_ENCRYPT
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select ARCH_HAS_NMI_SAFE_THIS_CPU_OPS
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select ARCH_HAS_PTE_SPECIAL
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select ARCH_HAS_SCALED_CPUTIME
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select ARCH_HAS_SET_DIRECT_MAP
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select ARCH_HAS_SET_MEMORY
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select ARCH_HAS_STRICT_KERNEL_RWX
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select ARCH_HAS_STRICT_MODULE_RWX
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select ARCH_HAS_SYSCALL_WRAPPER
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select ARCH_HAS_UBSAN
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select ARCH_HAS_VDSO_DATA
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select ARCH_HAVE_NMI_SAFE_CMPXCHG
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select ARCH_INLINE_READ_LOCK
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select ARCH_INLINE_READ_LOCK_BH
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select ARCH_INLINE_READ_LOCK_IRQ
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select ARCH_INLINE_READ_LOCK_IRQSAVE
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select ARCH_INLINE_READ_TRYLOCK
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select ARCH_INLINE_READ_UNLOCK
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select ARCH_INLINE_READ_UNLOCK_BH
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select ARCH_INLINE_READ_UNLOCK_IRQ
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select ARCH_INLINE_READ_UNLOCK_IRQRESTORE
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select ARCH_INLINE_SPIN_LOCK
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select ARCH_INLINE_SPIN_LOCK_BH
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select ARCH_INLINE_SPIN_LOCK_IRQ
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select ARCH_INLINE_SPIN_LOCK_IRQSAVE
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select ARCH_INLINE_SPIN_TRYLOCK
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select ARCH_INLINE_SPIN_TRYLOCK_BH
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select ARCH_INLINE_SPIN_UNLOCK
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select ARCH_INLINE_SPIN_UNLOCK_BH
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select ARCH_INLINE_SPIN_UNLOCK_IRQ
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select ARCH_INLINE_SPIN_UNLOCK_IRQRESTORE
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select ARCH_INLINE_WRITE_LOCK
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select ARCH_INLINE_WRITE_LOCK_BH
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select ARCH_INLINE_WRITE_LOCK_IRQ
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select ARCH_INLINE_WRITE_LOCK_IRQSAVE
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select ARCH_INLINE_WRITE_TRYLOCK
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select ARCH_INLINE_WRITE_UNLOCK
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select ARCH_INLINE_WRITE_UNLOCK_BH
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select ARCH_INLINE_WRITE_UNLOCK_IRQ
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select ARCH_INLINE_WRITE_UNLOCK_IRQRESTORE
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select ARCH_MHP_MEMMAP_ON_MEMORY_ENABLE
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select ARCH_STACKWALK
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select ARCH_SUPPORTS_ATOMIC_RMW
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select ARCH_SUPPORTS_DEBUG_PAGEALLOC
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select ARCH_SUPPORTS_HUGETLBFS
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select ARCH_SUPPORTS_INT128 if CC_HAS_INT128 && CC_IS_CLANG
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select ARCH_SUPPORTS_NUMA_BALANCING
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select ARCH_SUPPORTS_PER_VMA_LOCK
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select ARCH_USE_BUILTIN_BSWAP
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select ARCH_USE_CMPXCHG_LOCKREF
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select ARCH_USE_SYM_ANNOTATIONS
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select ARCH_WANTS_NO_INSTR
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select ARCH_WANT_DEFAULT_BPF_JIT
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select ARCH_WANT_IPC_PARSE_VERSION
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select ARCH_WANT_KERNEL_PMD_MKWRITE
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select ARCH_WANT_LD_ORPHAN_WARN
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select ARCH_WANT_OPTIMIZE_HUGETLB_VMEMMAP
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select BUILDTIME_TABLE_SORT
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select CLONE_BACKWARDS2
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select DCACHE_WORD_ACCESS if !KMSAN
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select DYNAMIC_FTRACE if FUNCTION_TRACER
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select FUNCTION_ALIGNMENT_8B if CC_IS_GCC
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select FUNCTION_ALIGNMENT_16B if !CC_IS_GCC
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select GENERIC_ALLOCATOR
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select GENERIC_CPU_DEVICES
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select GENERIC_CPU_AUTOPROBE
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select GENERIC_CPU_VULNERABILITIES
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select GENERIC_ENTRY
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select GENERIC_GETTIMEOFDAY
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select GENERIC_PTDUMP
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select GENERIC_SMP_IDLE_THREAD
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select GENERIC_TIME_VSYSCALL
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select GENERIC_VDSO_TIME_NS
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select GENERIC_IOREMAP if PCI
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select HAVE_ALIGNED_STRUCT_PAGE
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select HAVE_ARCH_AUDITSYSCALL
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select HAVE_ARCH_JUMP_LABEL
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select HAVE_ARCH_JUMP_LABEL_RELATIVE
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select HAVE_ARCH_KASAN
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select HAVE_ARCH_KASAN_VMALLOC
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select HAVE_ARCH_KCSAN
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select HAVE_ARCH_KMSAN
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select HAVE_ARCH_KFENCE
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select HAVE_ARCH_RANDOMIZE_KSTACK_OFFSET
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select HAVE_ARCH_SECCOMP_FILTER
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select HAVE_ARCH_SOFT_DIRTY
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select HAVE_ARCH_STACKLEAK
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select HAVE_ARCH_TRACEHOOK
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select HAVE_ARCH_TRANSPARENT_HUGEPAGE
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select HAVE_ARCH_VMAP_STACK
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select HAVE_ASM_MODVERSIONS
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select HAVE_CMPXCHG_DOUBLE
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select HAVE_CMPXCHG_LOCAL
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select HAVE_DEBUG_KMEMLEAK
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select HAVE_DMA_CONTIGUOUS
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select HAVE_DYNAMIC_FTRACE
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select HAVE_DYNAMIC_FTRACE_WITH_ARGS
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select HAVE_DYNAMIC_FTRACE_WITH_DIRECT_CALLS
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select HAVE_DYNAMIC_FTRACE_WITH_REGS
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select HAVE_EBPF_JIT if HAVE_MARCH_Z196_FEATURES
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select HAVE_EFFICIENT_UNALIGNED_ACCESS
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select HAVE_GUP_FAST
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select HAVE_FENTRY
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select HAVE_FTRACE_MCOUNT_RECORD
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select HAVE_FUNCTION_ARG_ACCESS_API
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select HAVE_FUNCTION_ERROR_INJECTION
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select HAVE_FUNCTION_GRAPH_RETVAL
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select HAVE_FUNCTION_GRAPH_TRACER
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select HAVE_FUNCTION_TRACER
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select HAVE_GCC_PLUGINS
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select HAVE_GENERIC_VDSO
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select HAVE_IOREMAP_PROT if PCI
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select HAVE_KERNEL_BZIP2
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select HAVE_KERNEL_GZIP
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select HAVE_KERNEL_LZ4
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select HAVE_KERNEL_LZMA
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select HAVE_KERNEL_LZO
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select HAVE_KERNEL_UNCOMPRESSED
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select HAVE_KERNEL_XZ
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select HAVE_KERNEL_ZSTD
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select HAVE_KPROBES
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select HAVE_KPROBES_ON_FTRACE
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select HAVE_KRETPROBES
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select HAVE_LIVEPATCH
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select HAVE_MEMBLOCK_PHYS_MAP
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select HAVE_MOD_ARCH_SPECIFIC
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select HAVE_NMI
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select HAVE_NOP_MCOUNT
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select HAVE_PAGE_SIZE_4KB
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select HAVE_PCI
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select HAVE_PERF_EVENTS
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select HAVE_PERF_REGS
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select HAVE_PERF_USER_STACK_DUMP
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select HAVE_REGS_AND_STACK_ACCESS_API
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select HAVE_RELIABLE_STACKTRACE
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select HAVE_RETHOOK
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select HAVE_RSEQ
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select HAVE_SAMPLE_FTRACE_DIRECT
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select HAVE_SAMPLE_FTRACE_DIRECT_MULTI
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select HAVE_SETUP_PER_CPU_AREA
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select HAVE_SOFTIRQ_ON_OWN_STACK
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select HAVE_SYSCALL_TRACEPOINTS
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select HAVE_VIRT_CPU_ACCOUNTING
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select HAVE_VIRT_CPU_ACCOUNTING_IDLE
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select IOMMU_HELPER if PCI
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select IOMMU_SUPPORT if PCI
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select MMU_GATHER_MERGE_VMAS
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select MMU_GATHER_NO_GATHER
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select MMU_GATHER_RCU_TABLE_FREE
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select MODULES_USE_ELF_RELA
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select NEED_DMA_MAP_STATE if PCI
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select NEED_PER_CPU_EMBED_FIRST_CHUNK
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select NEED_SG_DMA_LENGTH if PCI
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select OLD_SIGACTION
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select OLD_SIGSUSPEND3
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select PCI_DOMAINS if PCI
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select PCI_MSI if PCI
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select PCI_MSI_ARCH_FALLBACKS if PCI_MSI
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select SPARSE_IRQ
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select SWIOTLB
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select SYSCTL_EXCEPTION_TRACE
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select THREAD_INFO_IN_TASK
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select TRACE_IRQFLAGS_SUPPORT
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select TTY
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select USER_STACKTRACE_SUPPORT
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select VDSO_GETRANDOM
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select VIRT_CPU_ACCOUNTING
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select ZONE_DMA
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# Note: keep the above list sorted alphabetically
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config SCHED_OMIT_FRAME_POINTER
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def_bool y
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config PGTABLE_LEVELS
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int
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default 5
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source "kernel/livepatch/Kconfig"
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config ARCH_SUPPORTS_KEXEC
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def_bool y
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config ARCH_SUPPORTS_KEXEC_FILE
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def_bool y
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config ARCH_SUPPORTS_KEXEC_SIG
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def_bool MODULE_SIG_FORMAT
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config ARCH_SUPPORTS_KEXEC_PURGATORY
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def_bool y
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config ARCH_SUPPORTS_CRASH_DUMP
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def_bool y
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help
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Refer to <file:Documentation/arch/s390/zfcpdump.rst> for more details on this.
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This option also enables s390 zfcpdump.
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See also <file:Documentation/arch/s390/zfcpdump.rst>
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menu "Processor type and features"
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config HAVE_MARCH_Z10_FEATURES
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def_bool n
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config HAVE_MARCH_Z196_FEATURES
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def_bool n
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select HAVE_MARCH_Z10_FEATURES
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config HAVE_MARCH_ZEC12_FEATURES
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def_bool n
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select HAVE_MARCH_Z196_FEATURES
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config HAVE_MARCH_Z13_FEATURES
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def_bool n
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select HAVE_MARCH_ZEC12_FEATURES
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config HAVE_MARCH_Z14_FEATURES
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def_bool n
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select HAVE_MARCH_Z13_FEATURES
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config HAVE_MARCH_Z15_FEATURES
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def_bool n
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select HAVE_MARCH_Z14_FEATURES
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config HAVE_MARCH_Z16_FEATURES
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def_bool n
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select HAVE_MARCH_Z15_FEATURES
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choice
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prompt "Processor type"
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default MARCH_Z196
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config MARCH_Z10
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bool "IBM System z10"
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select HAVE_MARCH_Z10_FEATURES
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depends on $(cc-option,-march=z10)
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help
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Select this to enable optimizations for IBM System z10 (2097 and 2098
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series). This is the oldest machine generation currently supported.
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config MARCH_Z196
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bool "IBM zEnterprise 114 and 196"
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select HAVE_MARCH_Z196_FEATURES
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depends on $(cc-option,-march=z196)
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help
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Select this to enable optimizations for IBM zEnterprise 114 and 196
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(2818 and 2817 series). The kernel will be slightly faster but will
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not work on older machines.
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config MARCH_ZEC12
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bool "IBM zBC12 and zEC12"
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select HAVE_MARCH_ZEC12_FEATURES
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depends on $(cc-option,-march=zEC12)
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help
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Select this to enable optimizations for IBM zBC12 and zEC12 (2828 and
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2827 series). The kernel will be slightly faster but will not work on
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older machines.
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config MARCH_Z13
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bool "IBM z13s and z13"
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select HAVE_MARCH_Z13_FEATURES
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depends on $(cc-option,-march=z13)
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help
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Select this to enable optimizations for IBM z13s and z13 (2965 and
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2964 series). The kernel will be slightly faster but will not work on
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older machines.
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config MARCH_Z14
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bool "IBM z14 ZR1 and z14"
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select HAVE_MARCH_Z14_FEATURES
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depends on $(cc-option,-march=z14)
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help
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Select this to enable optimizations for IBM z14 ZR1 and z14 (3907
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and 3906 series). The kernel will be slightly faster but will not
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work on older machines.
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config MARCH_Z15
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bool "IBM z15"
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select HAVE_MARCH_Z15_FEATURES
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depends on $(cc-option,-march=z15)
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help
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Select this to enable optimizations for IBM z15 (8562
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and 8561 series). The kernel will be slightly faster but will not
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work on older machines.
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config MARCH_Z16
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bool "IBM z16"
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select HAVE_MARCH_Z16_FEATURES
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depends on $(cc-option,-march=z16)
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help
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Select this to enable optimizations for IBM z16 (3931 and
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3932 series).
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endchoice
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config MARCH_Z10_TUNE
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def_bool TUNE_Z10 || MARCH_Z10 && TUNE_DEFAULT
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config MARCH_Z196_TUNE
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def_bool TUNE_Z196 || MARCH_Z196 && TUNE_DEFAULT
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config MARCH_ZEC12_TUNE
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def_bool TUNE_ZEC12 || MARCH_ZEC12 && TUNE_DEFAULT
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config MARCH_Z13_TUNE
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def_bool TUNE_Z13 || MARCH_Z13 && TUNE_DEFAULT
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|
|
config MARCH_Z14_TUNE
|
|
def_bool TUNE_Z14 || MARCH_Z14 && TUNE_DEFAULT
|
|
|
|
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
|
|
help
|
|
Cause the compiler to tune (-mtune) the generated code for a machine.
|
|
This will make the code run faster on the selected machine but
|
|
somewhat slower on other machines.
|
|
This option only changes how the compiler emits instructions, not the
|
|
selection of instructions itself, so the resulting kernel will run on
|
|
all other machines.
|
|
|
|
config TUNE_DEFAULT
|
|
bool "Default"
|
|
help
|
|
Tune the generated code for the target processor for which the kernel
|
|
will be compiled.
|
|
|
|
config TUNE_Z10
|
|
bool "IBM System z10"
|
|
|
|
config TUNE_Z196
|
|
bool "IBM zEnterprise 114 and 196"
|
|
depends on $(cc-option,-mtune=z196)
|
|
|
|
config TUNE_ZEC12
|
|
bool "IBM zBC12 and zEC12"
|
|
depends on $(cc-option,-mtune=zEC12)
|
|
|
|
config TUNE_Z13
|
|
bool "IBM z13s and z13"
|
|
depends on $(cc-option,-mtune=z13)
|
|
|
|
config TUNE_Z14
|
|
bool "IBM z14 ZR1 and z14"
|
|
depends on $(cc-option,-mtune=z14)
|
|
|
|
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 n
|
|
prompt "Kernel support for 31 bit emulation"
|
|
select ARCH_WANT_OLD_COMPAT_IPC
|
|
select COMPAT_OLD_SIGACTION
|
|
select HAVE_UID16
|
|
depends on MULTIUSER
|
|
depends on !CC_IS_CLANG && !LD_IS_LLD
|
|
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.
|
|
|
|
If unsure say N.
|
|
|
|
config SMP
|
|
def_bool y
|
|
|
|
config NR_CPUS
|
|
int "Maximum number of CPUs (2-512)"
|
|
range 2 512
|
|
default "64"
|
|
help
|
|
This allows you to specify the maximum number of CPUs which this
|
|
kernel will support. The maximum supported value is 512 and the
|
|
minimum value which makes sense is 2.
|
|
|
|
This is purely to save memory - each supported CPU adds
|
|
approximately sixteen kilobytes to the kernel image.
|
|
|
|
config HOTPLUG_CPU
|
|
def_bool y
|
|
|
|
config NUMA
|
|
bool "NUMA support"
|
|
depends on SCHED_TOPOLOGY
|
|
default n
|
|
help
|
|
Enable NUMA support
|
|
|
|
This option adds NUMA support to the kernel.
|
|
|
|
config NODES_SHIFT
|
|
int
|
|
depends on NUMA
|
|
default "1"
|
|
|
|
config SCHED_SMT
|
|
def_bool n
|
|
|
|
config SCHED_MC
|
|
def_bool n
|
|
|
|
config SCHED_TOPOLOGY
|
|
def_bool y
|
|
prompt "Topology scheduler support"
|
|
select SCHED_SMT
|
|
select SCHED_MC
|
|
help
|
|
Topology scheduler support improves the CPU scheduler's decision
|
|
making when dealing with machines that have multi-threading,
|
|
multiple cores or multiple books.
|
|
|
|
config SCHED_TOPOLOGY_VERTICAL
|
|
def_bool y
|
|
bool "Use vertical CPU polarization by default"
|
|
depends on SCHED_TOPOLOGY
|
|
help
|
|
Use vertical CPU polarization by default if available.
|
|
The default CPU polarization is horizontal.
|
|
|
|
config HIPERDISPATCH_ON
|
|
def_bool y
|
|
bool "Use hiperdispatch on vertical polarization by default"
|
|
depends on SCHED_TOPOLOGY
|
|
depends on PROC_SYSCTL
|
|
help
|
|
Hiperdispatch aims to improve the CPU scheduler's decision
|
|
making when using vertical polarization by adjusting CPU
|
|
capacities dynamically. Set this option to use hiperdispatch
|
|
on vertical polarization by default. This can be overwritten
|
|
by sysctl's s390.hiperdispatch attribute later on.
|
|
|
|
source "kernel/Kconfig.hz"
|
|
|
|
config CERT_STORE
|
|
bool "Get user certificates via DIAG320"
|
|
depends on KEYS
|
|
select CRYPTO_LIB_SHA256
|
|
help
|
|
Enable this option if you want to access user-provided secure boot
|
|
certificates via DIAG 0x320.
|
|
|
|
These certificates will be made available via the keyring named
|
|
'cert_store'.
|
|
|
|
config KERNEL_NOBP
|
|
def_bool n
|
|
prompt "Enable modified branch prediction for the kernel by default"
|
|
help
|
|
If this option is selected the kernel will switch to a modified
|
|
branch prediction mode if the firmware interface is available.
|
|
The modified branch prediction mode improves the behaviour in
|
|
regard to speculative execution.
|
|
|
|
With the option enabled the kernel parameter "nobp=0" or "nospec"
|
|
can be used to run the kernel in the normal branch prediction mode.
|
|
|
|
With the option disabled the modified branch prediction mode is
|
|
enabled with the "nobp=1" kernel parameter.
|
|
|
|
If unsure, say N.
|
|
|
|
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
|
|
against kernel-to-user data leaks by avoiding speculative indirect
|
|
branches.
|
|
Requires a compiler with -mindirect-branch=thunk support for full
|
|
protection. The kernel may run slower.
|
|
|
|
If unsure, say N.
|
|
|
|
config EXPOLINE_EXTERN
|
|
def_bool EXPOLINE && CC_IS_GCC && GCC_VERSION >= 110200 && \
|
|
$(success,$(srctree)/arch/s390/tools/gcc-thunk-extern.sh $(CC))
|
|
help
|
|
Generate expolines as external functions if the compiler supports it.
|
|
This option is required for some tooling like kpatch, if expolines
|
|
are enabled. The kernel is compiled with
|
|
-mindirect-branch=thunk-extern, which requires a newer compiler.
|
|
|
|
choice
|
|
prompt "Expoline default"
|
|
depends on EXPOLINE
|
|
default EXPOLINE_FULL
|
|
|
|
config EXPOLINE_OFF
|
|
bool "spectre_v2=off"
|
|
|
|
config EXPOLINE_AUTO
|
|
bool "spectre_v2=auto"
|
|
|
|
config EXPOLINE_FULL
|
|
bool "spectre_v2=on"
|
|
|
|
endchoice
|
|
|
|
config RELOCATABLE
|
|
def_bool y
|
|
help
|
|
This builds a kernel image that retains relocation information
|
|
so it can be loaded at an arbitrary address.
|
|
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)"
|
|
default y
|
|
help
|
|
In support of Kernel Address Space Layout Randomization (KASLR),
|
|
this randomizes the address at which the kernel image is loaded,
|
|
as a security feature that deters exploit attempts relying on
|
|
knowledge of the location of kernel internals.
|
|
|
|
config RANDOMIZE_IDENTITY_BASE
|
|
bool "Randomize the address of the identity mapping base"
|
|
depends on RANDOMIZE_BASE
|
|
default DEBUG_VM
|
|
help
|
|
The identity mapping base address is pinned to zero by default.
|
|
Allow randomization of that base to expose otherwise missed
|
|
notion of physical and virtual addresses of data structures.
|
|
That does not have any impact on the base address at which the
|
|
kernel image is loaded.
|
|
|
|
If unsure, say N
|
|
|
|
config KERNEL_IMAGE_BASE
|
|
hex "Kernel image base address"
|
|
range 0x100000 0x1FFFFFE0000000 if !KASAN
|
|
range 0x100000 0x1BFFFFE0000000 if KASAN
|
|
default 0x3FFE0000000 if !KASAN
|
|
default 0x7FFFE0000000 if KASAN
|
|
help
|
|
This is the address at which the kernel image is loaded in case
|
|
Kernel Address Space Layout Randomization (KASLR) is disabled.
|
|
|
|
In case the Protected virtualization guest support is enabled the
|
|
Ultravisor imposes a virtual address limit. If the value of this
|
|
option leads to the kernel image exceeding the Ultravisor limit,
|
|
this option is ignored and the image is loaded below the limit.
|
|
|
|
If the value of this option leads to the kernel image overlapping
|
|
the virtual memory where other data structures are located, this
|
|
option is ignored and the image is loaded above the structures.
|
|
|
|
endmenu
|
|
|
|
menu "Memory setup"
|
|
|
|
config ARCH_SPARSEMEM_ENABLE
|
|
def_bool y
|
|
select SPARSEMEM_VMEMMAP_ENABLE
|
|
select SPARSEMEM_VMEMMAP
|
|
|
|
config ARCH_SPARSEMEM_DEFAULT
|
|
def_bool y
|
|
|
|
config MAX_PHYSMEM_BITS
|
|
int "Maximum size of supported physical memory in bits (42-53)"
|
|
range 42 53
|
|
default "46"
|
|
help
|
|
This option specifies the maximum supported size of physical memory
|
|
in bits. Supported is any size between 2^42 (4TB) and 2^53 (8PB).
|
|
Increasing the number of bits also increases the kernel image size.
|
|
By default 46 bits (64TB) are supported.
|
|
|
|
config CHECK_STACK
|
|
def_bool y
|
|
depends on !VMAP_STACK
|
|
prompt "Detect kernel stack overflow"
|
|
help
|
|
This option enables the compiler option -mstack-guard and
|
|
-mstack-size if they are available. If the compiler supports them
|
|
it will emit additional code to each function prolog to trigger
|
|
an illegal operation if the kernel stack is about to overflow.
|
|
|
|
Say N if you are unsure.
|
|
|
|
config STACK_GUARD
|
|
int "Size of the guard area (128-1024)"
|
|
range 128 1024
|
|
depends on CHECK_STACK
|
|
default "256"
|
|
help
|
|
This allows you to specify the size of the guard area at the lower
|
|
end of the kernel stack. If the kernel stack points into the guard
|
|
area on function entry an illegal operation is triggered. The size
|
|
needs to be a power of 2. Please keep in mind that the size of an
|
|
interrupt frame is 184 bytes for 31 bit and 328 bytes on 64 bit.
|
|
The minimum size for the stack guard should be 256 for 31 bit and
|
|
512 for 64 bit.
|
|
|
|
endmenu
|
|
|
|
menu "I/O subsystem"
|
|
|
|
config QDIO
|
|
def_tristate y
|
|
prompt "QDIO support"
|
|
help
|
|
This driver provides the Queued Direct I/O base support for
|
|
IBM System z.
|
|
|
|
To compile this driver as a module, choose M here: the
|
|
module will be called qdio.
|
|
|
|
If unsure, say Y.
|
|
|
|
if PCI
|
|
|
|
config PCI_NR_FUNCTIONS
|
|
int "Maximum number of PCI functions (1-4096)"
|
|
range 1 4096
|
|
default "512"
|
|
help
|
|
This allows you to specify the maximum number of PCI functions which
|
|
this kernel will support.
|
|
|
|
endif # PCI
|
|
|
|
config HAS_IOMEM
|
|
def_bool PCI
|
|
|
|
config CHSC_SCH
|
|
def_tristate m
|
|
prompt "Support for CHSC subchannels"
|
|
help
|
|
This driver allows usage of CHSC subchannels. A CHSC subchannel
|
|
is usually present on LPAR only.
|
|
The driver creates a device /dev/chsc, which may be used to
|
|
obtain I/O configuration information about the machine and
|
|
to issue asynchronous chsc commands (DANGEROUS).
|
|
You will usually only want to use this interface on a special
|
|
LPAR designated for system management.
|
|
|
|
To compile this driver as a module, choose M here: the
|
|
module will be called chsc_sch.
|
|
|
|
If unsure, say N.
|
|
|
|
config SCM_BUS
|
|
def_bool y
|
|
prompt "SCM bus driver"
|
|
help
|
|
Bus driver for Storage Class Memory.
|
|
|
|
config EADM_SCH
|
|
def_tristate m
|
|
prompt "Support for EADM subchannels"
|
|
depends on SCM_BUS
|
|
help
|
|
This driver allows usage of EADM subchannels. EADM subchannels act
|
|
as a communication vehicle for SCM increments.
|
|
|
|
To compile this driver as a module, choose M here: the
|
|
module will be called eadm_sch.
|
|
|
|
config AP
|
|
def_tristate y
|
|
prompt "Support for Adjunct Processors (ap)"
|
|
help
|
|
This driver allows usage to Adjunct Processor (AP) devices via
|
|
the ap bus, cards and queues. Supported Adjunct Processors are
|
|
the CryptoExpress Cards (CEX).
|
|
|
|
To compile this driver as a module, choose M here: the
|
|
module will be called ap.
|
|
|
|
If unsure, say Y (default).
|
|
|
|
config AP_DEBUG
|
|
def_bool n
|
|
prompt "Enable debug features for Adjunct Processor (ap) devices"
|
|
depends on AP
|
|
help
|
|
Say 'Y' here to enable some additional debug features for Adjunct
|
|
Processor (ap) devices.
|
|
|
|
There will be some more sysfs attributes displayed for ap queues.
|
|
|
|
Do not enable on production level kernel build.
|
|
|
|
If unsure, say N.
|
|
|
|
config VFIO_CCW
|
|
def_tristate n
|
|
prompt "Support for VFIO-CCW subchannels"
|
|
depends on VFIO
|
|
select VFIO_MDEV
|
|
help
|
|
This driver allows usage of I/O subchannels via VFIO-CCW.
|
|
|
|
To compile this driver as a module, choose M here: the
|
|
module will be called vfio_ccw.
|
|
|
|
config VFIO_AP
|
|
def_tristate n
|
|
prompt "VFIO support for AP devices"
|
|
depends on KVM
|
|
depends on VFIO
|
|
depends on AP
|
|
select VFIO_MDEV
|
|
help
|
|
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.
|
|
|
|
endmenu
|
|
|
|
config CCW
|
|
def_bool y
|
|
|
|
config HAVE_PNETID
|
|
tristate
|
|
default (SMC || CCWGROUP)
|
|
|
|
menu "Virtualization"
|
|
|
|
config PFAULT
|
|
def_bool y
|
|
prompt "Pseudo page fault support"
|
|
help
|
|
Select this option, if you want to use PFAULT pseudo page fault
|
|
handling under VM. If running native or in LPAR, this option
|
|
has no effect. If your VM does not support PFAULT, PAGEEX
|
|
pseudo page fault handling will be used.
|
|
Note that VM 4.2 supports PFAULT but has a bug in its
|
|
implementation that causes some problems.
|
|
Everybody who wants to run Linux under VM != VM4.2 should select
|
|
this option.
|
|
|
|
config CMM
|
|
def_tristate n
|
|
prompt "Cooperative memory management"
|
|
help
|
|
Select this option, if you want to enable the kernel interface
|
|
to reduce the memory size of the system. This is accomplished
|
|
by allocating pages of memory and put them "on hold". This only
|
|
makes sense for a system running under VM where the unused pages
|
|
will be reused by VM for other guest systems. The interface
|
|
allows an external monitor to balance memory of many systems.
|
|
Everybody who wants to run Linux under VM should select this
|
|
option.
|
|
|
|
config CMM_IUCV
|
|
def_bool y
|
|
prompt "IUCV special message interface to cooperative memory management"
|
|
depends on CMM && (SMSGIUCV=y || CMM=SMSGIUCV)
|
|
help
|
|
Select this option to enable the special message interface to
|
|
the cooperative memory management.
|
|
|
|
config APPLDATA_BASE
|
|
def_bool n
|
|
prompt "Linux - VM Monitor Stream, base infrastructure"
|
|
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
|
|
intervals, once the timer is started.
|
|
Writing 1 or 0 to /proc/appldata/timer starts(1) or stops(0) the timer,
|
|
i.e. enables or disables monitoring on the Linux side.
|
|
A custom interval value (in seconds) can be written to
|
|
/proc/appldata/interval.
|
|
|
|
Defaults are 60 seconds interval and timer off.
|
|
The /proc entries can also be read from, showing the current settings.
|
|
|
|
config APPLDATA_MEM
|
|
def_tristate m
|
|
prompt "Monitor memory management statistics"
|
|
depends on APPLDATA_BASE && VM_EVENT_COUNTERS
|
|
help
|
|
This provides memory management related data to the Linux - VM Monitor
|
|
Stream, like paging/swapping rate, memory utilisation, etc.
|
|
Writing 1 or 0 to /proc/appldata/memory creates(1) or removes(0) a z/VM
|
|
APPLDATA monitor record, i.e. enables or disables monitoring this record
|
|
on the z/VM side.
|
|
|
|
Default is disabled.
|
|
The /proc entry can also be read from, showing the current settings.
|
|
|
|
This can also be compiled as a module, which will be called
|
|
appldata_mem.o.
|
|
|
|
config APPLDATA_OS
|
|
def_tristate m
|
|
prompt "Monitor OS statistics"
|
|
depends on APPLDATA_BASE
|
|
help
|
|
This provides OS related data to the Linux - VM Monitor Stream, like
|
|
CPU utilisation, etc.
|
|
Writing 1 or 0 to /proc/appldata/os creates(1) or removes(0) a z/VM
|
|
APPLDATA monitor record, i.e. enables or disables monitoring this record
|
|
on the z/VM side.
|
|
|
|
Default is disabled.
|
|
This can also be compiled as a module, which will be called
|
|
appldata_os.o.
|
|
|
|
config APPLDATA_NET_SUM
|
|
def_tristate m
|
|
prompt "Monitor overall network statistics"
|
|
depends on APPLDATA_BASE && NET
|
|
help
|
|
This provides network related data to the Linux - VM Monitor Stream,
|
|
currently there is only a total sum of network I/O statistics, no
|
|
per-interface data.
|
|
Writing 1 or 0 to /proc/appldata/net_sum creates(1) or removes(0) a z/VM
|
|
APPLDATA monitor record, i.e. enables or disables monitoring this record
|
|
on the z/VM side.
|
|
|
|
Default is disabled.
|
|
This can also be compiled as a module, which will be called
|
|
appldata_net_sum.o.
|
|
|
|
config S390_HYPFS
|
|
def_bool y
|
|
prompt "s390 hypervisor information"
|
|
help
|
|
This provides several binary files at (debugfs)/s390_hypfs/ to
|
|
provide accounting information in an s390 hypervisor environment.
|
|
|
|
config S390_HYPFS_FS
|
|
def_bool n
|
|
prompt "s390 hypervisor file system support"
|
|
select SYS_HYPERVISOR
|
|
depends on S390_HYPFS
|
|
help
|
|
This is a virtual file system intended to provide accounting
|
|
information in an s390 hypervisor environment. This file system
|
|
is deprecated and should not be used.
|
|
|
|
Say N if you are unsure.
|
|
|
|
source "arch/s390/kvm/Kconfig"
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|
|
|
config S390_GUEST
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|
def_bool y
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|
prompt "s390 support for virtio devices"
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|
select TTY
|
|
select VIRTUALIZATION
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|
select VIRTIO
|
|
help
|
|
Enabling this option adds support for virtio based paravirtual device
|
|
drivers on s390.
|
|
|
|
Select this option if you want to run the kernel as a guest under
|
|
the KVM hypervisor.
|
|
|
|
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
|
|
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_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
|