5e0a760b44
commit 23baf831a3 ("mm, treewide: redefine MAX_ORDER sanely") has
changed the definition of MAX_ORDER to be inclusive. This has caused
issues with code that was not yet upstream and depended on the previous
definition.
To draw attention to the altered meaning of the define, rename MAX_ORDER
to MAX_PAGE_ORDER.
Link: https://lkml.kernel.org/r/20231228144704.14033-2-kirill.shutemov@linux.intel.com
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
496 lines
13 KiB
Plaintext
496 lines
13 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0-only
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config 64BIT
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bool "64-bit kernel" if "$(ARCH)" = "sparc"
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default "$(ARCH)" = "sparc64"
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help
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SPARC is a family of RISC microprocessors designed and marketed by
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Sun Microsystems, incorporated. They are very widely found in Sun
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workstations and clones.
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Say yes to build a 64-bit kernel - formerly known as sparc64
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Say no to build a 32-bit kernel - formerly known as sparc
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config SPARC
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bool
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default y
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select ARCH_MIGHT_HAVE_PC_PARPORT if SPARC64 && PCI
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select ARCH_MIGHT_HAVE_PC_SERIO
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select DMA_OPS
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select OF
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select OF_PROMTREE
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select HAVE_ASM_MODVERSIONS
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select HAVE_ARCH_KGDB if !SMP || SPARC64
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select HAVE_ARCH_TRACEHOOK
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select HAVE_ARCH_SECCOMP if SPARC64
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select HAVE_EXIT_THREAD
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select HAVE_PCI
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select SYSCTL_EXCEPTION_TRACE
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select RTC_CLASS
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select RTC_DRV_M48T59
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select RTC_SYSTOHC
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select HAVE_ARCH_JUMP_LABEL if SPARC64
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select GENERIC_IRQ_SHOW
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select ARCH_WANT_IPC_PARSE_VERSION
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select GENERIC_PCI_IOMAP
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select HAS_IOPORT
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select HAVE_HARDLOCKUP_DETECTOR_SPARC64 if SPARC64
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select HAVE_CBPF_JIT if SPARC32
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select HAVE_EBPF_JIT if SPARC64
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select HAVE_DEBUG_BUGVERBOSE
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select GENERIC_SMP_IDLE_THREAD
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select MODULES_USE_ELF_RELA
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select PCI_SYSCALL if PCI
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select PCI_MSI_ARCH_FALLBACKS if PCI_MSI
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select ODD_RT_SIGACTION
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select OLD_SIGSUSPEND
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select CPU_NO_EFFICIENT_FFS
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select LOCKDEP_SMALL if LOCKDEP
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select NEED_DMA_MAP_STATE
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select NEED_SG_DMA_LENGTH
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select TRACE_IRQFLAGS_SUPPORT
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config SPARC32
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def_bool !64BIT
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select ARCH_32BIT_OFF_T
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select ARCH_HAS_CPU_FINALIZE_INIT if !SMP
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select ARCH_HAS_SYNC_DMA_FOR_CPU
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select CLZ_TAB
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select DMA_DIRECT_REMAP
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select GENERIC_ATOMIC64
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select HAVE_UID16
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select LOCK_MM_AND_FIND_VMA
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select OLD_SIGACTION
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select ZONE_DMA
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config SPARC64
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def_bool 64BIT
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select ALTERNATE_USER_ADDRESS_SPACE
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select HAVE_FUNCTION_TRACER
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select HAVE_FUNCTION_GRAPH_TRACER
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select HAVE_KRETPROBES
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select HAVE_KPROBES
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select MMU_GATHER_RCU_TABLE_FREE if SMP
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select MMU_GATHER_MERGE_VMAS
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select MMU_GATHER_NO_FLUSH_CACHE
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select HAVE_ARCH_TRANSPARENT_HUGEPAGE
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select HAVE_DYNAMIC_FTRACE
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select HAVE_FTRACE_MCOUNT_RECORD
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select HAVE_SYSCALL_TRACEPOINTS
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select HAVE_CONTEXT_TRACKING_USER
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select HAVE_TIF_NOHZ
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select HAVE_DEBUG_KMEMLEAK
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select IOMMU_HELPER
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select SPARSE_IRQ
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select RTC_DRV_CMOS
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select RTC_DRV_BQ4802
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select RTC_DRV_SUN4V
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select RTC_DRV_STARFIRE
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select HAVE_PERF_EVENTS
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select PERF_USE_VMALLOC
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select ARCH_HAVE_NMI_SAFE_CMPXCHG
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select HAVE_C_RECORDMCOUNT
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select HAVE_ARCH_AUDITSYSCALL
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select ARCH_SUPPORTS_ATOMIC_RMW
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select ARCH_SUPPORTS_DEBUG_PAGEALLOC
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select HAVE_NMI
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select HAVE_REGS_AND_STACK_ACCESS_API
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select ARCH_USE_QUEUED_RWLOCKS
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select ARCH_USE_QUEUED_SPINLOCKS
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select GENERIC_TIME_VSYSCALL
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select ARCH_CLOCKSOURCE_DATA
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select ARCH_HAS_PTE_SPECIAL
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select PCI_DOMAINS if PCI
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select ARCH_HAS_GIGANTIC_PAGE
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select HAVE_SOFTIRQ_ON_OWN_STACK
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select HAVE_SETUP_PER_CPU_AREA
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select NEED_PER_CPU_EMBED_FIRST_CHUNK
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select NEED_PER_CPU_PAGE_FIRST_CHUNK
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config ARCH_PROC_KCORE_TEXT
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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 ARCH_ATU
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bool
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default y if SPARC64
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config STACKTRACE_SUPPORT
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bool
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default y if SPARC64
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config LOCKDEP_SUPPORT
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bool
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default y if SPARC64
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config ARCH_HIBERNATION_POSSIBLE
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def_bool y if SPARC64
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config AUDIT_ARCH
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bool
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default y
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config MMU
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bool
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default y
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config HIGHMEM
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bool
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default y if SPARC32
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select KMAP_LOCAL
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config GENERIC_ISA_DMA
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bool
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default y if SPARC32
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config PGTABLE_LEVELS
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default 4 if 64BIT
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default 3
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config ARCH_SUPPORTS_UPROBES
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def_bool y if SPARC64
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menu "Processor type and features"
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config SMP
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bool "Symmetric multi-processing support"
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help
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This enables support for systems with more than one CPU. If you have
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a system with only one CPU, say N. If you have a system with more
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than one CPU, say Y.
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If you say N here, the kernel will run on uni- and multiprocessor
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machines, but will use only one CPU of a multiprocessor machine. If
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you say Y here, the kernel will run on many, but not all,
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uniprocessor machines. On a uniprocessor machine, the kernel
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will run faster if you say N here.
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People using multiprocessor machines who say Y here should also say
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Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
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Management" code will be disabled if you say Y here.
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See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
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available at <https://www.tldp.org/docs.html#howto>.
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If you don't know what to do here, say N.
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config NR_CPUS
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int "Maximum number of CPUs"
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depends on SMP
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range 2 32 if SPARC32
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range 2 4096 if SPARC64
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default 32 if SPARC32
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default 4096 if SPARC64
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source "kernel/Kconfig.hz"
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config GENERIC_HWEIGHT
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bool
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default y
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config GENERIC_CALIBRATE_DELAY
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bool
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default y
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config ARCH_MAY_HAVE_PC_FDC
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bool
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default y
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config EMULATED_CMPXCHG
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bool
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default y if SPARC32
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help
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Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
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is emulated, and therefore it is not completely atomic.
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# Makefile helpers
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config SPARC32_SMP
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bool
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default y
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depends on SPARC32 && SMP
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config SPARC64_SMP
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bool
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default y
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depends on SPARC64 && SMP
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config EARLYFB
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bool "Support for early boot text console"
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default y
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depends on SPARC64
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help
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Say Y here to enable a faster early framebuffer boot console.
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config HOTPLUG_CPU
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bool "Support for hot-pluggable CPUs"
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depends on SPARC64 && SMP
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help
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Say Y here to experiment with turning CPUs off and on. CPUs
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can be controlled through /sys/devices/system/cpu/cpu#.
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Say N if you want to disable CPU hotplug.
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if SPARC64
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source "drivers/cpufreq/Kconfig"
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endif
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config US3_MC
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tristate "UltraSPARC-III Memory Controller driver"
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depends on SPARC64
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default y
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help
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This adds a driver for the UltraSPARC-III memory controller.
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Loading this driver allows exact mnemonic strings to be
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printed in the event of a memory error, so that the faulty DIMM
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on the motherboard can be matched to the error.
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If in doubt, say Y, as this information can be very useful.
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# Global things across all Sun machines.
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config GENERIC_LOCKBREAK
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bool
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default y
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depends on SPARC64 && SMP && PREEMPTION
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config NUMA
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bool "NUMA support"
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depends on SPARC64 && SMP
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config NODES_SHIFT
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int "Maximum NUMA Nodes (as a power of 2)"
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range 4 5 if SPARC64
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default "5"
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depends on NUMA
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help
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Specify the maximum number of NUMA Nodes available on the target
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system. Increases memory reserved to accommodate various tables.
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config ARCH_SPARSEMEM_ENABLE
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def_bool y if SPARC64
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select SPARSEMEM_VMEMMAP_ENABLE
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config ARCH_SPARSEMEM_DEFAULT
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def_bool y if SPARC64
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config ARCH_FORCE_MAX_ORDER
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int "Order of maximal physically contiguous allocations"
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default "12"
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help
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The kernel page allocator limits the size of maximal physically
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contiguous allocations. The limit is called MAX_PAGE_ORDER and it
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defines the maximal power of two of number of pages that can be
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allocated as a single contiguous block. This option allows
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overriding the default setting when ability to allocate very
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large blocks of physically contiguous memory is required.
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Don't change if unsure.
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if SPARC64 || COMPILE_TEST
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source "kernel/power/Kconfig"
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endif
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config SCHED_SMT
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bool "SMT (Hyperthreading) scheduler support"
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depends on SPARC64 && SMP
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default y
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help
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SMT scheduler support improves the CPU scheduler's decision making
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when dealing with SPARC cpus at a cost of slightly increased overhead
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in some places. If unsure say N here.
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config SCHED_MC
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bool "Multi-core scheduler support"
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depends on SPARC64 && SMP
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default y
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help
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Multi-core scheduler support improves the CPU scheduler's decision
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making when dealing with multi-core CPU chips at a cost of slightly
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increased overhead in some places. If unsure say N here.
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config CMDLINE_BOOL
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bool "Default bootloader kernel arguments"
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depends on SPARC64
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config CMDLINE
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string "Initial kernel command string"
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depends on CMDLINE_BOOL
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default "console=ttyS0,9600 root=/dev/sda1"
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help
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Say Y here if you want to be able to pass default arguments to
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the kernel. This will be overridden by the bootloader, if you
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use one (such as SILO). This is most useful if you want to boot
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a kernel from TFTP, and want default options to be available
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with having them passed on the command line.
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NOTE: This option WILL override the PROM bootargs setting!
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config SUN_PM
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bool
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default y if SPARC32
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help
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Enable power management and CPU standby features on supported
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SPARC platforms.
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config SPARC_LED
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tristate "Sun4m LED driver"
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depends on SPARC32
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help
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This driver toggles the front-panel LED on sun4m systems
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in a user-specifiable manner. Its state can be probed
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by reading /proc/led and its blinking mode can be changed
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via writes to /proc/led
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config SERIAL_CONSOLE
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bool
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depends on SPARC32
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default y
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help
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If you say Y here, it will be possible to use a serial port as the
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system console (the system console is the device which receives all
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kernel messages and warnings and which allows logins in single user
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mode). This could be useful if some terminal or printer is connected
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to that serial port.
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Even if you say Y here, the currently visible virtual console
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(/dev/tty0) will still be used as the system console by default, but
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you can alter that using a kernel command line option such as
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"console=ttyS1". (Try "man bootparam" or see the documentation of
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your boot loader (silo) about how to pass options to the kernel at
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boot time.)
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If you don't have a graphics card installed and you say Y here, the
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kernel will automatically use the first serial line, /dev/ttyS0, as
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system console.
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If unsure, say N.
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config SPARC_LEON
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bool "Sparc Leon processor family"
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depends on SPARC32
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select USB_EHCI_BIG_ENDIAN_MMIO
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select USB_EHCI_BIG_ENDIAN_DESC
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select USB_UHCI_BIG_ENDIAN_MMIO
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select USB_UHCI_BIG_ENDIAN_DESC
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help
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If you say Y here if you are running on a SPARC-LEON processor.
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The LEON processor is a synthesizable VHDL model of the
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SPARC-v8 standard. LEON is part of the GRLIB collection of
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IP cores that are distributed under GPL. GRLIB can be downloaded
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from www.gaisler.com. You can download a sparc-linux cross-compilation
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toolchain at www.gaisler.com.
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if SPARC_LEON
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menu "U-Boot options"
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config UBOOT_LOAD_ADDR
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hex "uImage Load Address"
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default 0x40004000
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help
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U-Boot kernel load address, the address in physical address space
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where u-boot will place the Linux kernel before booting it.
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This address is normally the base address of main memory + 0x4000.
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config UBOOT_FLASH_ADDR
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hex "uImage.o Load Address"
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default 0x00080000
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help
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Optional setting only affecting the uImage.o ELF-image used to
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download the uImage file to the target using a ELF-loader other than
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U-Boot. It may for example be used to download an uImage to FLASH with
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the GRMON utility before even starting u-boot.
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config UBOOT_ENTRY_ADDR
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hex "uImage Entry Address"
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default 0xf0004000
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help
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Do not change this unless you know what you're doing. This is
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hardcoded by the SPARC32 and LEON port.
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This is the virtual address u-boot jumps to when booting the Linux
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Kernel.
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endmenu
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endif
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endmenu
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menu "Bus options (PCI etc.)"
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config SBUS
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bool
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default y
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config SBUSCHAR
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bool
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default y
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config SUN_LDOMS
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bool "Sun Logical Domains support"
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depends on SPARC64
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help
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Say Y here is you want to support virtual devices via
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Logical Domains.
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config PCIC_PCI
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bool
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depends on PCI && SPARC32 && !SPARC_LEON
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default y
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config LEON_PCI
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bool
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depends on PCI && SPARC_LEON
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default y
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config SPARC_GRPCI1
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bool "GRPCI Host Bridge Support"
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depends on LEON_PCI
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default y
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help
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Say Y here to include the GRPCI Host Bridge Driver. The GRPCI
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PCI host controller is typically found in GRLIB SPARC32/LEON
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systems. The driver has one property (all_pci_errors) controlled
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from the bootloader that makes the GRPCI to generate interrupts
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on detected PCI Parity and System errors.
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config SPARC_GRPCI2
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bool "GRPCI2 Host Bridge Support"
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depends on LEON_PCI
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default y
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help
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Say Y here to include the GRPCI2 Host Bridge Driver.
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config SUN_OPENPROMFS
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tristate "Openprom tree appears in /proc/openprom"
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help
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If you say Y, the OpenPROM device tree will be available as a
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virtual file system, which you can mount to /proc/openprom by "mount
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-t openpromfs none /proc/openprom".
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To compile the /proc/openprom support as a module, choose M here: the
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module will be called openpromfs.
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Only choose N if you know in advance that you will not need to modify
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OpenPROM settings on the running system.
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# Makefile helpers
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config SPARC64_PCI
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bool
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default y
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depends on SPARC64 && PCI
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config SPARC64_PCI_MSI
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bool
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default y
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depends on SPARC64_PCI && PCI_MSI
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endmenu
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config COMPAT
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bool
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depends on SPARC64
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default y
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select HAVE_UID16
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select ARCH_WANT_OLD_COMPAT_IPC
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select COMPAT_OLD_SIGACTION
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source "drivers/sbus/char/Kconfig"
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