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usr
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kernels
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4.18.0-553.121.1.el8_10.x86_64
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arch
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riscv
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/usr/src/kernels/4.18.0-553.121.1.el8_10.x86_64/arch/riscv
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/usr/src/kernels/4.18.0-553.121.1.el8_10.x86_64/arch/riscv/Kconfig
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# # For a description of the syntax of this configuration file, # see Documentation/kbuild/kconfig-language.txt. # config 64BIT bool config 32BIT bool config RISCV def_bool y # even on 32-bit, physical (and DMA) addresses are > 32-bits select PHYS_ADDR_T_64BIT select OF select OF_EARLY_FLATTREE select OF_IRQ select ARCH_WANT_FRAME_POINTERS select CLONE_BACKWARDS select COMMON_CLK select DMA_DIRECT_OPS select GENERIC_CLOCKEVENTS select GENERIC_CPU_DEVICES select GENERIC_IRQ_SHOW select GENERIC_PCI_IOMAP select GENERIC_STRNCPY_FROM_USER select GENERIC_STRNLEN_USER select GENERIC_SMP_IDLE_THREAD select GENERIC_ATOMIC64 if !64BIT || !RISCV_ISA_A select HAVE_MEMBLOCK_NODE_MAP select HAVE_DMA_CONTIGUOUS select HAVE_GENERIC_DMA_COHERENT select HAVE_PERF_EVENTS select IRQ_DOMAIN select RISCV_ISA_A if SMP select SPARSE_IRQ select SYSCTL_EXCEPTION_TRACE select HAVE_ARCH_TRACEHOOK select MODULES_USE_ELF_RELA if MODULES select THREAD_INFO_IN_TASK select RISCV_TIMER select GENERIC_IRQ_MULTI_HANDLER select ARCH_HAS_PTE_SPECIAL select ARCH_HAS_MMIOWB config MMU def_bool y config ZONE_DMA32 bool default y if 64BIT config PAGE_OFFSET hex default 0xC0000000 if 32BIT && MAXPHYSMEM_2GB default 0xffffffff80000000 if 64BIT && MAXPHYSMEM_2GB default 0xffffffe000000000 if 64BIT && MAXPHYSMEM_128GB config STACKTRACE_SUPPORT def_bool y config TRACE_IRQFLAGS_SUPPORT def_bool y config GENERIC_BUG def_bool y depends on BUG select GENERIC_BUG_RELATIVE_POINTERS if 64BIT config GENERIC_BUG_RELATIVE_POINTERS bool config GENERIC_CALIBRATE_DELAY def_bool y config GENERIC_CSUM def_bool y config GENERIC_HWEIGHT def_bool y config PGTABLE_LEVELS int default 3 if 64BIT default 2 config HAVE_KPROBES def_bool n menu "Platform type" choice prompt "Base ISA" default ARCH_RV64I help This selects the base ISA that this kernel will traget and must match the target platform. config ARCH_RV32I bool "RV32I" select 32BIT select GENERIC_LIB_ASHLDI3 select GENERIC_LIB_ASHRDI3 select GENERIC_LIB_LSHRDI3 select GENERIC_LIB_UCMPDI2 config ARCH_RV64I bool "RV64I" select 64BIT select HAVE_FUNCTION_TRACER select HAVE_FUNCTION_GRAPH_TRACER select HAVE_FTRACE_MCOUNT_RECORD select HAVE_DYNAMIC_FTRACE select HAVE_DYNAMIC_FTRACE_WITH_REGS select SWIOTLB endchoice # We must be able to map all physical memory into the kernel, but the compiler # is still a bit more efficient when generating code if it's setup in a manner # such that it can only map 2GiB of memory. choice prompt "Kernel Code Model" default CMODEL_MEDLOW if 32BIT default CMODEL_MEDANY if 64BIT config CMODEL_MEDLOW bool "medium low code model" config CMODEL_MEDANY bool "medium any code model" endchoice config MODULE_SECTIONS bool select HAVE_MOD_ARCH_SPECIFIC choice prompt "Maximum Physical Memory" default MAXPHYSMEM_2GB if 32BIT default MAXPHYSMEM_2GB if 64BIT && CMODEL_MEDLOW default MAXPHYSMEM_128GB if 64BIT && CMODEL_MEDANY config MAXPHYSMEM_2GB bool "2GiB" config MAXPHYSMEM_128GB depends on 64BIT && CMODEL_MEDANY select MODULE_SECTIONS if MODULES bool "128GiB" endchoice config SMP bool "Symmetric Multi-Processing" help This enables support for systems with more than one CPU. If you say N here, the kernel will run on single and multiprocessor machines, but will use only one CPU of a multiprocessor machine. If you say Y here, the kernel will run on many, but not all, single processor machines. On a single processor machine, the kernel will run faster if you say N here. If you don't know what to do here, say N. config NR_CPUS int "Maximum number of CPUs (2-32)" range 2 32 depends on SMP default "8" choice prompt "CPU Tuning" default TUNE_GENERIC config TUNE_GENERIC bool "generic" endchoice config RISCV_ISA_C bool "Emit compressed instructions when building Linux" default y help Adds "C" to the ISA subsets that the toolchain is allowed to emit when building Linux, which results in compressed instructions in the Linux binary. If you don't know what to do here, say Y. config RISCV_ISA_A def_bool y menu "supported PMU type" depends on PERF_EVENTS config RISCV_BASE_PMU bool "Base Performance Monitoring Unit" def_bool y help A base PMU that serves as a reference implementation and has limited feature of perf. It can run on any RISC-V machines so serves as the fallback, but this option can also be disable to reduce kernel size. endmenu endmenu menu "Kernel type" source "mm/Kconfig" source "kernel/Kconfig.preempt" source "kernel/Kconfig.hz" endmenu menu "Bus support" config PCI bool "PCI support" select PCI_MSI help This feature enables support for PCI bus system. If you say Y here, the kernel will include drivers and infrastructure code to support PCI bus devices. If you don't know what to do here, say Y. config PCI_DOMAINS def_bool PCI config PCI_DOMAINS_GENERIC def_bool PCI source "drivers/pci/Kconfig" endmenu source "init/Kconfig" source "kernel/Kconfig.freezer" menu "Executable file formats" source "fs/Kconfig.binfmt" endmenu menu "Power management options" source kernel/power/Kconfig endmenu source "net/Kconfig" source "drivers/Kconfig" source "fs/Kconfig" menu "Kernel hacking" config CMDLINE_BOOL bool "Built-in kernel command line" help For most platforms, it is firmware or second stage bootloader that by default specifies the kernel command line options. However, it might be necessary or advantageous to either override the default kernel command line or add a few extra options to it. For such cases, this option allows hardcoding command line options directly into the kernel. For that, choose 'Y' here and fill in the extra boot parameters in CONFIG_CMDLINE. The built-in options will be concatenated to the default command line if CMDLINE_FORCE is set to 'N'. Otherwise, the default command line will be ignored and replaced by the built-in string. config CMDLINE string "Built-in kernel command string" depends on CMDLINE_BOOL default "" help Supply command-line options at build time by entering them here. config CMDLINE_FORCE bool "Built-in command line overrides bootloader arguments" depends on CMDLINE_BOOL help Set this option to 'Y' to have the kernel ignore the bootloader or firmware command line. Instead, the built-in command line will be used exclusively. If you don't know what to do here, say N. config EARLY_PRINTK def_bool y source "lib/Kconfig.debug" config CMDLINE_BOOL bool endmenu source "security/Kconfig" source "crypto/Kconfig" source "lib/Kconfig"
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