# SPDX-License-Identifier: GPL-2.0 config PGTABLE_LEVELS int "Page Table Levels" if !IA64_PAGE_SIZE_64KB range 3 4 if !IA64_PAGE_SIZE_64KB default 3 menu "Processor type and features" config IA64 bool select ARCH_HAS_CPU_FINALIZE_INIT select ARCH_HAS_DMA_MARK_CLEAN select ARCH_MIGHT_HAVE_PC_PARPORT select ARCH_MIGHT_HAVE_PC_SERIO select ACPI select ACPI_NUMA if NUMA select ARCH_SUPPORTS_ACPI select ACPI_SYSTEM_POWER_STATES_SUPPORT if ACPI select ARCH_MIGHT_HAVE_ACPI_PDC if ACPI select FORCE_PCI select PCI_DOMAINS if PCI select PCI_MSI select PCI_SYSCALL if PCI select HAVE_ASM_MODVERSIONS select HAVE_UNSTABLE_SCHED_CLOCK select HAVE_EXIT_THREAD select HAVE_IDE select HAVE_OPROFILE select HAVE_KPROBES select HAVE_KRETPROBES select HAVE_FTRACE_MCOUNT_RECORD select HAVE_DYNAMIC_FTRACE if (!ITANIUM) select HAVE_FUNCTION_TRACER select TTY select HAVE_ARCH_TRACEHOOK select HAVE_VIRT_CPU_ACCOUNTING select VIRT_TO_BUS select GENERIC_IRQ_PROBE select GENERIC_PENDING_IRQ if SMP select GENERIC_IRQ_SHOW select GENERIC_IRQ_LEGACY select ARCH_HAVE_NMI_SAFE_CMPXCHG select GENERIC_IOMAP select GENERIC_SMP_IDLE_THREAD select ARCH_TASK_STRUCT_ON_STACK select ARCH_TASK_STRUCT_ALLOCATOR select ARCH_THREAD_STACK_ALLOCATOR select ARCH_CLOCKSOURCE_DATA select GENERIC_TIME_VSYSCALL select SWIOTLB select SYSCTL_ARCH_UNALIGN_NO_WARN select HAVE_MOD_ARCH_SPECIFIC select MODULES_USE_ELF_RELA select ARCH_USE_CMPXCHG_LOCKREF select HAVE_ARCH_AUDITSYSCALL select NEED_DMA_MAP_STATE select NEED_SG_DMA_LENGTH select NUMA if !FLATMEM select PCI_MSI_ARCH_FALLBACKS if PCI_MSI select SET_FS default y help The Itanium Processor Family is Intel's 64-bit successor to the 32-bit X86 line. The IA-64 Linux project has a home page at and a mailing list at . config 64BIT bool select ATA_NONSTANDARD if ATA default y config ZONE_DMA32 def_bool y config MMU bool default y config STACKTRACE_SUPPORT def_bool y config GENERIC_LOCKBREAK def_bool n config HUGETLB_PAGE_SIZE_VARIABLE bool depends on HUGETLB_PAGE default y config GENERIC_CALIBRATE_DELAY bool default y config HAVE_SETUP_PER_CPU_AREA def_bool y config DMI bool default y select DMI_SCAN_MACHINE_NON_EFI_FALLBACK config EFI bool select UCS2_STRING default y config SCHED_OMIT_FRAME_POINTER bool default y config IA64_UNCACHED_ALLOCATOR bool select GENERIC_ALLOCATOR config ARCH_USES_PG_UNCACHED def_bool y depends on IA64_UNCACHED_ALLOCATOR config AUDIT_ARCH bool default y choice prompt "Processor type" default ITANIUM config ITANIUM bool "Itanium" help Select your IA-64 processor type. The default is Itanium. This choice is safe for all IA-64 systems, but may not perform optimally on systems with, say, Itanium 2 or newer processors. config MCKINLEY bool "Itanium 2" help Select this to configure for an Itanium 2 (McKinley) processor. endchoice choice prompt "Kernel page size" default IA64_PAGE_SIZE_16KB config IA64_PAGE_SIZE_4KB bool "4KB" help This lets you select the page size of the kernel. For best IA-64 performance, a page size of 8KB or 16KB is recommended. For best IA-32 compatibility, a page size of 4KB should be selected (the vast majority of IA-32 binaries work perfectly fine with a larger page size). For Itanium 2 or newer systems, a page size of 64KB can also be selected. 4KB For best IA-32 compatibility 8KB For best IA-64 performance 16KB For best IA-64 performance 64KB Requires Itanium 2 or newer processor. If you don't know what to do, choose 16KB. config IA64_PAGE_SIZE_8KB bool "8KB" config IA64_PAGE_SIZE_16KB bool "16KB" config IA64_PAGE_SIZE_64KB depends on !ITANIUM bool "64KB" endchoice source "kernel/Kconfig.hz" config IA64_BRL_EMU bool depends on ITANIUM default y # align cache-sensitive data to 128 bytes config IA64_L1_CACHE_SHIFT int default "7" if MCKINLEY default "6" if ITANIUM config IA64_SGI_UV bool "SGI-UV support" help Selecting this option will add specific support for running on SGI UV based systems. If you have an SGI UV system or are building a distro kernel, select this option. config IA64_HP_SBA_IOMMU bool "HP SBA IOMMU support" select DMA_OPS default y help Say Y here to add support for the SBA IOMMU found on HP zx1 and sx1000 systems. If you're unsure, answer Y. config IA64_CYCLONE bool "Cyclone (EXA) Time Source support" help Say Y here to enable support for IBM EXA Cyclone time source. If you're unsure, answer N. config FORCE_MAX_ZONEORDER int "MAX_ORDER (11 - 17)" if !HUGETLB_PAGE range 11 17 if !HUGETLB_PAGE default "17" if HUGETLB_PAGE default "11" config SMP bool "Symmetric multi-processing support" help This enables support for systems with more than one CPU. If you have a system with only one CPU, say N. If you have a system with more than one CPU, say Y. If you say N here, the kernel will run on single and multiprocessor systems, but will use only one CPU of a multiprocessor system. If you say Y here, the kernel will run on many, but not all, single processor systems. On a single processor system, the kernel will run faster if you say N here. See also the SMP-HOWTO available at . If you don't know what to do here, say N. config NR_CPUS int "Maximum number of CPUs (2-4096)" range 2 4096 depends on SMP default "4096" help You should set this to the number of CPUs in your system, but keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but only use 2 CPUs on a >2 CPU system. Setting this to a value larger than 64 will cause the use of a CPU mask array, causing a small performance hit. config HOTPLUG_CPU bool "Support for hot-pluggable CPUs" depends on SMP default n help Say Y here to experiment with turning CPUs off and on. CPUs can be controlled through /sys/devices/system/cpu/cpu#. Say N if you want to disable CPU hotplug. config ARCH_ENABLE_MEMORY_HOTPLUG def_bool y config ARCH_ENABLE_MEMORY_HOTREMOVE def_bool y config SCHED_SMT bool "SMT scheduler support" depends on SMP help Improves the CPU scheduler's decision making when dealing with Intel IA64 chips with MultiThreading at a cost of slightly increased overhead in some places. If unsure say N here. config PERMIT_BSP_REMOVE bool "Support removal of Bootstrap Processor" depends on HOTPLUG_CPU default n help Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU support. config FORCE_CPEI_RETARGET bool "Force assumption that CPEI can be re-targeted" depends on PERMIT_BSP_REMOVE default n help Say Y if you need to force the assumption that CPEI can be re-targeted to any cpu in the system. This hint is available via ACPI 3.0 specifications. Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP. This option it useful to enable this feature on older BIOS's as well. You can also enable this by using boot command line option force_cpei=1. config ARCH_SELECT_MEMORY_MODEL def_bool y config ARCH_DISCONTIGMEM_ENABLE def_bool y help Say Y to support efficient handling of discontiguous physical memory, for architectures which are either NUMA (Non-Uniform Memory Access) or have huge holes in the physical address space for other reasons. See for more. config ARCH_FLATMEM_ENABLE def_bool y config ARCH_SPARSEMEM_ENABLE def_bool y depends on ARCH_DISCONTIGMEM_ENABLE select SPARSEMEM_VMEMMAP_ENABLE config ARCH_DISCONTIGMEM_DEFAULT def_bool y depends on ARCH_DISCONTIGMEM_ENABLE config NUMA bool "NUMA support" depends on !FLATMEM select SMP help Say Y to compile the kernel to support NUMA (Non-Uniform Memory Access). This option is for configuring high-end multiprocessor server systems. If in doubt, say N. config NODES_SHIFT int "Max num nodes shift(3-10)" range 3 10 default "10" depends on NEED_MULTIPLE_NODES help This option specifies the maximum number of nodes in your SSI system. MAX_NUMNODES will be 2^(This value). If in doubt, use the default. # VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent. # VIRTUAL_MEM_MAP has been retained for historical reasons. config VIRTUAL_MEM_MAP bool "Virtual mem map" depends on !SPARSEMEM default y help Say Y to compile the kernel with support for a virtual mem map. This code also only takes effect if a memory hole of greater than 1 Gb is found during boot. You must turn this option on if you require the DISCONTIGMEM option for your machine. If you are unsure, say Y. config HOLES_IN_ZONE bool default y if VIRTUAL_MEM_MAP config HAVE_ARCH_EARLY_PFN_TO_NID def_bool NUMA && SPARSEMEM config HAVE_ARCH_NODEDATA_EXTENSION def_bool y depends on NUMA config USE_PERCPU_NUMA_NODE_ID def_bool y depends on NUMA config HAVE_MEMORYLESS_NODES def_bool NUMA config ARCH_PROC_KCORE_TEXT def_bool y depends on PROC_KCORE config IA64_MCA_RECOVERY bool "MCA recovery from errors other than TLB." config IA64_PALINFO tristate "/proc/pal support" help If you say Y here, you are able to get PAL (Processor Abstraction Layer) information in /proc/pal. This contains useful information about the processors in your systems, such as cache and TLB sizes and the PAL firmware version in use. To use this option, you have to ensure that the "/proc file system support" (CONFIG_PROC_FS) is enabled, too. config IA64_MC_ERR_INJECT tristate "MC error injection support" help Adds support for MC error injection. If enabled, the kernel will provide a sysfs interface for user applications to call MC error injection PAL procedures to inject various errors. This is a useful tool for MCA testing. If you're unsure, do not select this option. config IA64_ESI bool "ESI (Extensible SAL Interface) support" help If you say Y here, support is built into the kernel to make ESI calls. ESI calls are used to support vendor-specific firmware extensions, such as the ability to inject memory-errors for test-purposes. If you're unsure, say N. config IA64_HP_AML_NFW bool "Support ACPI AML calls to native firmware" help This driver installs a global ACPI Operation Region handler for region 0xA1. AML methods can use this OpRegion to call arbitrary native firmware functions. The driver installs the OpRegion handler if there is an HPQ5001 device or if the user supplies the "force" module parameter, e.g., with the "aml_nfw.force" kernel command line option. config KEXEC bool "kexec system call" depends on !SMP || HOTPLUG_CPU select KEXEC_CORE help kexec is a system call that implements the ability to shutdown your current kernel, and to start another kernel. It is like a reboot but it is independent of the system firmware. And like a reboot you can start any kernel with it, not just Linux. The name comes from the similarity to the exec system call. It is an ongoing process to be certain the hardware in a machine is properly shutdown, so do not be surprised if this code does not initially work for you. As of this writing the exact hardware interface is strongly in flux, so no good recommendation can be made. config CRASH_DUMP bool "kernel crash dumps" depends on IA64_MCA_RECOVERY && (!SMP || HOTPLUG_CPU) help Generate crash dump after being started by kexec. source "drivers/firmware/Kconfig" endmenu menu "Power management and ACPI options" source "kernel/power/Kconfig" source "drivers/acpi/Kconfig" if PM menu "CPU Frequency scaling" source "drivers/cpufreq/Kconfig" endmenu endif endmenu config MSPEC tristate "Memory special operations driver" depends on IA64 select IA64_UNCACHED_ALLOCATOR help If you have an ia64 and you want to enable memory special operations support (formerly known as fetchop), say Y here, otherwise say N.