2022-05-31 18:04:11 +08:00
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# SPDX-License-Identifier: GPL-2.0
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config LOONGARCH
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bool
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default y
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2022-07-20 18:51:24 +08:00
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select ACPI_GENERIC_GSI if ACPI
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2022-05-31 18:04:11 +08:00
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select ACPI_SYSTEM_POWER_STATES_SUPPORT if ACPI
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select ARCH_BINFMT_ELF_STATE
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select ARCH_ENABLE_MEMORY_HOTPLUG
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select ARCH_ENABLE_MEMORY_HOTREMOVE
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select ARCH_HAS_ACPI_TABLE_UPGRADE if ACPI
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2022-05-31 18:04:12 +08:00
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select ARCH_HAS_PHYS_TO_DMA
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2022-05-31 18:04:11 +08:00
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select ARCH_HAS_PTE_SPECIAL
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select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
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select ARCH_INLINE_READ_LOCK if !PREEMPTION
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select ARCH_INLINE_READ_LOCK_BH if !PREEMPTION
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select ARCH_INLINE_READ_LOCK_IRQ if !PREEMPTION
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select ARCH_INLINE_READ_LOCK_IRQSAVE if !PREEMPTION
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select ARCH_INLINE_READ_UNLOCK if !PREEMPTION
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select ARCH_INLINE_READ_UNLOCK_BH if !PREEMPTION
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select ARCH_INLINE_READ_UNLOCK_IRQ if !PREEMPTION
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select ARCH_INLINE_READ_UNLOCK_IRQRESTORE if !PREEMPTION
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select ARCH_INLINE_WRITE_LOCK if !PREEMPTION
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select ARCH_INLINE_WRITE_LOCK_BH if !PREEMPTION
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select ARCH_INLINE_WRITE_LOCK_IRQ if !PREEMPTION
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select ARCH_INLINE_WRITE_LOCK_IRQSAVE if !PREEMPTION
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select ARCH_INLINE_WRITE_UNLOCK if !PREEMPTION
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select ARCH_INLINE_WRITE_UNLOCK_BH if !PREEMPTION
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select ARCH_INLINE_WRITE_UNLOCK_IRQ if !PREEMPTION
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select ARCH_INLINE_WRITE_UNLOCK_IRQRESTORE if !PREEMPTION
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select ARCH_INLINE_SPIN_TRYLOCK if !PREEMPTION
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select ARCH_INLINE_SPIN_TRYLOCK_BH if !PREEMPTION
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select ARCH_INLINE_SPIN_LOCK if !PREEMPTION
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select ARCH_INLINE_SPIN_LOCK_BH if !PREEMPTION
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select ARCH_INLINE_SPIN_LOCK_IRQ if !PREEMPTION
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select ARCH_INLINE_SPIN_LOCK_IRQSAVE if !PREEMPTION
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select ARCH_INLINE_SPIN_UNLOCK if !PREEMPTION
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select ARCH_INLINE_SPIN_UNLOCK_BH if !PREEMPTION
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select ARCH_INLINE_SPIN_UNLOCK_IRQ if !PREEMPTION
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select ARCH_INLINE_SPIN_UNLOCK_IRQRESTORE if !PREEMPTION
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select ARCH_MIGHT_HAVE_PC_PARPORT
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select ARCH_MIGHT_HAVE_PC_SERIO
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select ARCH_SPARSEMEM_ENABLE
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select ARCH_SUPPORTS_ACPI
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select ARCH_SUPPORTS_ATOMIC_RMW
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select ARCH_SUPPORTS_HUGETLBFS
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2022-05-31 18:04:12 +08:00
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select ARCH_SUPPORTS_NUMA_BALANCING
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2022-05-31 18:04:11 +08:00
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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_QUEUED_RWLOCKS
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select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT
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select ARCH_WANTS_NO_INSTR
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select BUILDTIME_TABLE_SORT
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select COMMON_CLK
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select GENERIC_CLOCKEVENTS
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select GENERIC_CMOS_UPDATE
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select GENERIC_CPU_AUTOPROBE
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select GENERIC_ENTRY
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select GENERIC_GETTIMEOFDAY
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select GENERIC_IRQ_MULTI_HANDLER
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select GENERIC_IRQ_PROBE
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select GENERIC_IRQ_SHOW
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select GENERIC_LIB_ASHLDI3
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select GENERIC_LIB_ASHRDI3
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select GENERIC_LIB_CMPDI2
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select GENERIC_LIB_LSHRDI3
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select GENERIC_LIB_UCMPDI2
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select GENERIC_PCI_IOMAP
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select GENERIC_SCHED_CLOCK
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2022-05-31 18:04:12 +08:00
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select GENERIC_SMP_IDLE_THREAD
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2022-05-31 18:04:11 +08:00
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select GENERIC_TIME_VSYSCALL
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select GPIOLIB
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select HAVE_ARCH_AUDITSYSCALL
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select HAVE_ARCH_MMAP_RND_BITS if MMU
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select HAVE_ARCH_SECCOMP_FILTER
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select HAVE_ARCH_TRACEHOOK
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select HAVE_ARCH_TRANSPARENT_HUGEPAGE
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select HAVE_ASM_MODVERSIONS
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select HAVE_CONTEXT_TRACKING
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select HAVE_DEBUG_STACKOVERFLOW
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select HAVE_DMA_CONTIGUOUS
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select HAVE_EXIT_THREAD
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select HAVE_FAST_GUP
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select HAVE_GENERIC_VDSO
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select HAVE_IOREMAP_PROT
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select HAVE_IRQ_EXIT_ON_IRQ_STACK
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select HAVE_IRQ_TIME_ACCOUNTING
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select HAVE_MOD_ARCH_SPECIFIC
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select HAVE_NMI
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select HAVE_PERF_EVENTS
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select HAVE_REGS_AND_STACK_ACCESS_API
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select HAVE_RSEQ
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2022-05-31 18:04:12 +08:00
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select HAVE_SETUP_PER_CPU_AREA if NUMA
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2022-05-31 18:04:11 +08:00
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select HAVE_SYSCALL_TRACEPOINTS
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select HAVE_TIF_NOHZ
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2022-05-31 18:04:12 +08:00
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select HAVE_VIRT_CPU_ACCOUNTING_GEN if !SMP
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2022-05-31 18:04:11 +08:00
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select IRQ_FORCED_THREADING
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select IRQ_LOONGARCH_CPU
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select MODULES_USE_ELF_RELA if MODULES
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2022-05-31 18:04:12 +08:00
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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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2022-05-31 18:04:11 +08:00
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select OF
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select OF_EARLY_FLATTREE
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select PERF_USE_VMALLOC
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select RTC_LIB
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select SPARSE_IRQ
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select SYSCTL_EXCEPTION_TRACE
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select SWIOTLB
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select TRACE_IRQFLAGS_SUPPORT
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2022-05-31 18:04:12 +08:00
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select USE_PERCPU_NUMA_NODE_ID
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2022-05-31 18:04:11 +08:00
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select ZONE_DMA32
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2022-07-08 15:18:03 +08:00
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select MMU_GATHER_MERGE_VMAS if MMU
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2022-05-31 18:04:11 +08:00
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config 32BIT
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bool
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config 64BIT
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def_bool y
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config CPU_HAS_FPU
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bool
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default y
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config CPU_HAS_PREFETCH
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bool
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default y
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config GENERIC_CALIBRATE_DELAY
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def_bool y
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config GENERIC_CSUM
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def_bool y
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config GENERIC_HWEIGHT
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def_bool y
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config L1_CACHE_SHIFT
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int
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default "6"
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config LOCKDEP_SUPPORT
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bool
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default y
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# MACH_LOONGSON32 and MACH_LOONGSON64 are delibrately carried over from the
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# MIPS Loongson code, to preserve Loongson-specific code paths in drivers that
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# are shared between architectures, and specifically expecting the symbols.
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config MACH_LOONGSON32
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def_bool 32BIT
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config MACH_LOONGSON64
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def_bool 64BIT
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config PAGE_SIZE_4KB
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bool
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config PAGE_SIZE_16KB
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bool
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config PAGE_SIZE_64KB
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bool
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config PGTABLE_2LEVEL
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bool
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config PGTABLE_3LEVEL
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bool
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config PGTABLE_4LEVEL
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bool
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config PGTABLE_LEVELS
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int
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default 2 if PGTABLE_2LEVEL
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default 3 if PGTABLE_3LEVEL
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default 4 if PGTABLE_4LEVEL
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config SCHED_OMIT_FRAME_POINTER
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bool
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default y
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menu "Kernel type and options"
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source "kernel/Kconfig.hz"
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choice
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prompt "Page Table Layout"
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default 16KB_2LEVEL if 32BIT
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default 16KB_3LEVEL if 64BIT
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help
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Allows choosing the page table layout, which is a combination
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of page size and page table levels. The size of virtual memory
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address space are determined by the page table layout.
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config 4KB_3LEVEL
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bool "4KB with 3 levels"
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select PAGE_SIZE_4KB
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select PGTABLE_3LEVEL
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help
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This option selects 4KB page size with 3 level page tables, which
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support a maximum of 39 bits of application virtual memory.
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config 4KB_4LEVEL
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bool "4KB with 4 levels"
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select PAGE_SIZE_4KB
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select PGTABLE_4LEVEL
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help
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This option selects 4KB page size with 4 level page tables, which
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support a maximum of 48 bits of application virtual memory.
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config 16KB_2LEVEL
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bool "16KB with 2 levels"
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select PAGE_SIZE_16KB
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select PGTABLE_2LEVEL
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help
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This option selects 16KB page size with 2 level page tables, which
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support a maximum of 36 bits of application virtual memory.
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config 16KB_3LEVEL
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bool "16KB with 3 levels"
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select PAGE_SIZE_16KB
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select PGTABLE_3LEVEL
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help
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This option selects 16KB page size with 3 level page tables, which
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support a maximum of 47 bits of application virtual memory.
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config 64KB_2LEVEL
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bool "64KB with 2 levels"
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select PAGE_SIZE_64KB
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select PGTABLE_2LEVEL
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help
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This option selects 64KB page size with 2 level page tables, which
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support a maximum of 42 bits of application virtual memory.
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config 64KB_3LEVEL
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bool "64KB with 3 levels"
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select PAGE_SIZE_64KB
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select PGTABLE_3LEVEL
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help
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This option selects 64KB page size with 3 level page tables, which
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support a maximum of 55 bits of application virtual memory.
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endchoice
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config CMDLINE
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string "Built-in kernel command line"
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help
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For most platforms, the arguments for the kernel's command line
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are provided at run-time, during boot. However, there are cases
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where either no arguments are being provided or the provided
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arguments are insufficient or even invalid.
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When that occurs, it is possible to define a built-in command
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line here and choose how the kernel should use it later on.
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choice
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prompt "Kernel command line type"
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default CMDLINE_BOOTLOADER
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help
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Choose how the kernel will handle the provided built-in command
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line.
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config CMDLINE_BOOTLOADER
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bool "Use bootloader kernel arguments if available"
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help
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Prefer the command-line passed by the boot loader if available.
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Use the built-in command line as fallback in case we get nothing
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during boot. This is the default behaviour.
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config CMDLINE_EXTEND
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bool "Use built-in to extend bootloader kernel arguments"
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help
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The command-line arguments provided during boot will be
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appended to the built-in command line. This is useful in
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cases where the provided arguments are insufficient and
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you don't want to or cannot modify them.
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config CMDLINE_FORCE
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bool "Always use the built-in kernel command string"
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help
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Always use the built-in command line, even if we get one during
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boot. This is useful in case you need to override the provided
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command line on systems where you don't have or want control
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over it.
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endchoice
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config DMI
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bool "Enable DMI scanning"
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select DMI_SCAN_MACHINE_NON_EFI_FALLBACK
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default y
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help
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This enables SMBIOS/DMI feature for systems, and scanning of
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DMI to identify machine quirks.
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config EFI
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bool "EFI runtime service support"
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select UCS2_STRING
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select EFI_PARAMS_FROM_FDT
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select EFI_RUNTIME_WRAPPERS
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help
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This enables the kernel to use EFI runtime services that are
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available (such as the EFI variable services).
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2022-05-31 18:04:12 +08:00
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config SMP
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bool "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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See also the SMP-HOWTO available at <http://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 HOTPLUG_CPU
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bool "Support for hot-pluggable CPUs"
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depends on SMP
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select GENERIC_IRQ_MIGRATION
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help
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Say Y here to allow turning CPUs off and on. CPUs can be
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controlled through /sys/devices/system/cpu.
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(Note: power management support will enable this option
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automatically on SMP systems. )
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Say N if you want to disable CPU hotplug.
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config NR_CPUS
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int "Maximum number of CPUs (2-256)"
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range 2 256
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depends on SMP
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default "64"
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help
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This allows you to specify the maximum number of CPUs which this
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kernel will support.
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2022-05-31 18:04:12 +08:00
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config NUMA
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bool "NUMA Support"
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LoongArch: Fix the !CONFIG_SMP build
1, We assume arch/loongarch/include/asm/smp.h be included in include/
linux/smp.h is valid and the reverse inclusion isn't. So remove the
<linux/smp.h> in arch/loongarch/include/asm/smp.h.
2, arch/loongarch/include/asm/smp.h is only needed when CONFIG_SMP,
and setup.c include it only because it need plat_smp_setup(). So,
reorganize setup.c & smp.h, and then remove <asm/smp.h> in setup.c.
3, Fix cacheinfo.c and percpu.h build error by adding the missing header
files when !CONFIG_SMP.
4, Fix acpi.c build error by adding CONFIG_SMP guards.
5, Move irq_stat definition from smp.c to irq.c and fix its declaration.
6, Select CONFIG_SMP for CONFIG_NUMA, similar as other architectures do.
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
2022-06-05 16:19:53 +08:00
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select SMP
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2022-05-31 18:04:12 +08:00
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select ACPI_NUMA if ACPI
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help
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Say Y to compile the kernel with NUMA (Non-Uniform Memory Access)
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support. This option improves performance on systems with more
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than one NUMA node; on single node systems it is generally better
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to leave it disabled.
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config NODES_SHIFT
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int
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default "6"
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depends on NUMA
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2022-05-31 18:04:11 +08:00
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config FORCE_MAX_ZONEORDER
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int "Maximum zone order"
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range 14 64 if PAGE_SIZE_64KB
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default "14" if PAGE_SIZE_64KB
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range 12 64 if PAGE_SIZE_16KB
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default "12" if PAGE_SIZE_16KB
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range 11 64
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default "11"
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help
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The kernel memory allocator divides physically contiguous memory
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blocks into "zones", where each zone is a power of two number of
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pages. This option selects the largest power of two that the kernel
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keeps in the memory allocator. If you need to allocate very large
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blocks of physically contiguous memory, then you may need to
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increase this value.
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This config option is actually maximum order plus one. For example,
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a value of 11 means that the largest free memory block is 2^10 pages.
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The page size is not necessarily 4KB. Keep this in mind
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when choosing a value for this option.
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config SECCOMP
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bool "Enable seccomp to safely compute untrusted bytecode"
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depends on PROC_FS
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default y
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help
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|
This kernel feature is useful for number crunching applications
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|
that may need to compute untrusted bytecode during their
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|
|
execution. By using pipes or other transports made available to
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|
|
the process as file descriptors supporting the read/write
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|
|
syscalls, it's possible to isolate those applications in
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|
their own address space using seccomp. Once seccomp is
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|
|
enabled via /proc/<pid>/seccomp, it cannot be disabled
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|
|
and the task is only allowed to execute a few safe syscalls
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|
defined by each seccomp mode.
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If unsure, say Y. Only embedded should say N here.
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endmenu
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config ARCH_SELECT_MEMORY_MODEL
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|
|
def_bool y
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|
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config ARCH_FLATMEM_ENABLE
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|
|
def_bool y
|
2022-05-31 18:04:12 +08:00
|
|
|
depends on !NUMA
|
2022-05-31 18:04:11 +08:00
|
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|
|
config ARCH_SPARSEMEM_ENABLE
|
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|
|
def_bool y
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|
|
help
|
|
|
|
Say Y to support efficient handling of sparse physical memory,
|
|
|
|
for architectures which are either NUMA (Non-Uniform Memory Access)
|
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|
|
or have huge holes in the physical address space for other reasons.
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|
|
See <file:Documentation/vm/numa.rst> for more.
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|
|
config ARCH_ENABLE_THP_MIGRATION
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|
|
|
def_bool y
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|
|
depends on TRANSPARENT_HUGEPAGE
|
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|
|
config ARCH_MEMORY_PROBE
|
|
|
|
def_bool y
|
|
|
|
depends on MEMORY_HOTPLUG
|
|
|
|
|
|
|
|
config MMU
|
|
|
|
bool
|
|
|
|
default y
|
|
|
|
|
|
|
|
config ARCH_MMAP_RND_BITS_MIN
|
|
|
|
default 12
|
|
|
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|
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|
|
config ARCH_MMAP_RND_BITS_MAX
|
|
|
|
default 18
|
|
|
|
|
|
|
|
menu "Power management options"
|
|
|
|
|
|
|
|
source "drivers/acpi/Kconfig"
|
|
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|
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|
|
|
endmenu
|
|
|
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|
|
|
|
source "drivers/firmware/Kconfig"
|