# # For a description of the syntax of this configuration file, # see Documentation/kbuild/kconfig-language.txt. # mainmenu "IA-64 Linux Kernel Configuration" source "init/Kconfig" menu "Processor type and features" config IA64 bool 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 default y config MMU bool default y config RWSEM_XCHGADD_ALGORITHM bool default y config GENERIC_CALIBRATE_DELAY bool default y config TIME_INTERPOLATION bool default y config EFI bool default y config GENERIC_IOMAP bool default y config SCHED_NO_NO_OMIT_FRAME_POINTER bool default y config IA64_UNCACHED_ALLOCATOR bool select GENERIC_ALLOCATOR choice prompt "System type" default IA64_GENERIC config IA64_GENERIC bool "generic" select NUMA select ACPI_NUMA select VIRTUAL_MEM_MAP select DISCONTIGMEM help This selects the system type of your hardware. A "generic" kernel will run on any supported IA-64 system. However, if you configure a kernel for your specific system, it will be faster and smaller. generic For any supported IA-64 system DIG-compliant For DIG ("Developer's Interface Guide") compliant systems HP-zx1/sx1000 For HP systems HP-zx1/sx1000+swiotlb For HP systems with (broken) DMA-constrained devices. SGI-SN2 For SGI Altix systems Ski-simulator For the HP simulator If you don't know what to do, choose "generic". config IA64_DIG bool "DIG-compliant" config IA64_HP_ZX1 bool "HP-zx1/sx1000" help Build a kernel that runs on HP zx1 and sx1000 systems. This adds support for the HP I/O MMU. config IA64_HP_ZX1_SWIOTLB bool "HP-zx1/sx1000 with software I/O TLB" help Build a kernel that runs on HP zx1 and sx1000 systems even when they have broken PCI devices which cannot DMA to full 32 bits. Apart from support for the HP I/O MMU, this includes support for the software I/O TLB, which allows supporting the broken devices at the expense of wasting some kernel memory (about 2MB by default). config IA64_SGI_SN2 bool "SGI-SN2" help Selecting this option will optimize the kernel for use on sn2 based systems, but the resulting kernel binary will not run on other types of ia64 systems. If you have an SGI Altix system, it's safe to select this option. If in doubt, select ia64 generic support instead. config IA64_HP_SIM bool "Ski-simulator" endchoice 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 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 # align cache-sensitive data to 64 bytes config NUMA bool "NUMA support" depends on !IA64_HP_SIM default y if IA64_SGI_SN2 select ACPI_NUMA 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 VIRTUAL_MEM_MAP bool "Virtual mem map" default y if !IA64_HP_SIM 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 DISCONTIGMEM bool "Discontiguous memory support" depends on (IA64_DIG || IA64_SGI_SN2 || IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB) && NUMA && VIRTUAL_MEM_MAP default y if (IA64_SGI_SN2 || IA64_GENERIC) && NUMA 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 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 IOSAPIC bool depends on !IA64_HP_SIM default y config IA64_SGI_SN_SIM bool "SGI Medusa Simulator Support" depends on IA64_SGI_SN2 || IA64_GENERIC help If you are compiling a kernel that will run under SGI's IA-64 simulator (Medusa) then say Y, otherwise say N. config IA64_SGI_SN_XP tristate "Support communication between SGI SSIs" select IA64_UNCACHED_ALLOCATOR help An SGI machine can be divided into multiple Single System Images which act independently of each other and have hardware based memory protection from the others. Enabling this feature will allow for direct communication between SSIs based on a network adapter and DMA messaging. config FORCE_MAX_ZONEORDER int default "18" 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 and the SMP-HOWTO available at . If you don't know what to do here, say N. config NR_CPUS int "Maximum number of CPUs (2-512)" range 2 512 depends on SMP default "64" 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 (EXPERIMENTAL)" depends on SMP && EXPERIMENTAL select HOTPLUG 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 SCHED_SMT bool "SMT scheduler support" depends on SMP default off 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 PREEMPT bool "Preemptible Kernel" help This option reduces the latency of the kernel when reacting to real-time or interactive events by allowing a low priority process to be preempted even if it is in kernel mode executing a system call. This allows applications to run more reliably even when the system is under load. Say Y here if you are building a kernel for a desktop, embedded or real-time system. Say N if you are unsure. config HAVE_DEC_LOCK bool depends on (SMP || PREEMPT) default y config IA32_SUPPORT bool "Support for Linux/x86 binaries" help IA-64 processors can execute IA-32 (X86) instructions. By saying Y here, the kernel will include IA-32 system call emulation support which makes it possible to transparently run IA-32 Linux binaries on an IA-64 Linux system. If in doubt, say Y. config COMPAT bool depends on IA32_SUPPORT default y config IA64_MCA_RECOVERY tristate "MCA recovery from errors other than TLB." config PERFMON bool "Performance monitor support" help Selects whether support for the IA-64 performance monitor hardware is included in the kernel. This makes some kernel data-structures a little bigger and slows down execution a bit, but it is generally a good idea to turn this on. If you're unsure, say Y. 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 ACPI_DEALLOCATE_IRQ bool depends on IOSAPIC && EXPERIMENTAL default y source "drivers/firmware/Kconfig" source "fs/Kconfig.binfmt" endmenu menu "Power management and ACPI" config PM bool "Power Management support" depends on !IA64_HP_SIM default y help "Power Management" means that parts of your computer are shut off or put into a power conserving "sleep" mode if they are not being used. There are two competing standards for doing this: APM and ACPI. If you want to use either one, say Y here and then also to the requisite support below. Power Management is most important for battery powered laptop computers; if you have a laptop, check out the Linux Laptop home page on the WWW at and the Battery Powered Linux mini-HOWTO, available from . Note that, even if you say N here, Linux on the x86 architecture will issue the hlt instruction if nothing is to be done, thereby sending the processor to sleep and saving power. config ACPI bool depends on !IA64_HP_SIM default y if !IA64_HP_SIM source "drivers/acpi/Kconfig" endif endmenu if !IA64_HP_SIM menu "Bus options (PCI, PCMCIA)" config PCI bool "PCI support" help Find out whether you have a PCI motherboard. PCI is the name of a bus system, i.e. the way the CPU talks to the other stuff inside your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or VESA. If you have PCI, say Y, otherwise N. The PCI-HOWTO, available from , contains valuable information about which PCI hardware does work under Linux and which doesn't. config PCI_DOMAINS bool default PCI source "drivers/pci/Kconfig" source "drivers/pci/hotplug/Kconfig" source "drivers/pcmcia/Kconfig" endmenu endif source "drivers/Kconfig" source "fs/Kconfig" source "lib/Kconfig" # # Use the generic interrupt handling code in kernel/irq/: # config GENERIC_HARDIRQS bool default y config GENERIC_IRQ_PROBE bool default y source "arch/ia64/hp/sim/Kconfig" source "arch/ia64/oprofile/Kconfig" source "arch/ia64/Kconfig.debug" source "security/Kconfig" source "crypto/Kconfig"