2 # For a description of the syntax of this configuration file,
3 # see Documentation/kbuild/kconfig-language.txt.
6 mainmenu "IA-64 Linux Kernel Configuration"
10 menu "Processor type and features"
14 select PCI if (!IA64_HP_SIM)
15 select ACPI if (!IA64_HP_SIM)
16 select PM if (!IA64_HP_SIM)
17 select ARCH_SUPPORTS_MSI
21 select HAVE_KRETPROBES
24 select HAVE_ARCH_TRACEHOOK
27 The Itanium Processor Family is Intel's 64-bit successor to
28 the 32-bit X86 line. The IA-64 Linux project has a home
29 page at <http://www.linuxia64.org/> and a mailing list at
30 <linux-ia64@vger.kernel.org>.
34 select ATA_NONSTANDARD if ATA
39 depends on !IA64_SGI_SN2
55 config GENERIC_LOCKBREAK
58 depends on SMP && PREEMPT
60 config RWSEM_XCHGADD_ALGORITHM
64 config HUGETLB_PAGE_SIZE_VARIABLE
66 depends on HUGETLB_PAGE
69 config GENERIC_FIND_NEXT_BIT
73 config GENERIC_CALIBRATE_DELAY
81 config GENERIC_TIME_VSYSCALL
85 config HAVE_SETUP_PER_CPU_AREA
100 config SCHED_NO_NO_OMIT_FRAME_POINTER
104 config IA64_UNCACHED_ALLOCATOR
106 select GENERIC_ALLOCATOR
112 menuconfig PARAVIRT_GUEST
113 bool "Paravirtualized guest support"
115 Say Y here to get to see options related to running Linux under
116 various hypervisors. This option alone does not add any kernel code.
118 If you say N, all options in this submenu will be skipped and disabled.
123 bool "Enable paravirtualization code"
124 depends on PARAVIRT_GUEST
129 This changes the kernel so it can modify itself when it is run
130 under a hypervisor, potentially improving performance significantly
131 over full virtualization. However, when run without a hypervisor
132 the kernel is theoretically slower and slightly larger.
135 source "arch/ia64/xen/Kconfig"
150 This selects the system type of your hardware. A "generic" kernel
151 will run on any supported IA-64 system. However, if you configure
152 a kernel for your specific system, it will be faster and smaller.
154 generic For any supported IA-64 system
155 DIG-compliant For DIG ("Developer's Interface Guide") compliant systems
156 DIG+Intel+IOMMU For DIG systems with Intel IOMMU
157 HP-zx1/sx1000 For HP systems
158 HP-zx1/sx1000+swiotlb For HP systems with (broken) DMA-constrained devices.
159 SGI-SN2 For SGI Altix systems
160 SGI-UV For SGI UV systems
161 Ski-simulator For the HP simulator <http://www.hpl.hp.com/research/linux/ski/>
162 Xen-domU For xen domU system
164 If you don't know what to do, choose "generic".
171 bool "DIG+Intel+IOMMU"
178 Build a kernel that runs on HP zx1 and sx1000 systems. This adds
179 support for the HP I/O MMU.
181 config IA64_HP_ZX1_SWIOTLB
182 bool "HP-zx1/sx1000 with software I/O TLB"
185 Build a kernel that runs on HP zx1 and sx1000 systems even when they
186 have broken PCI devices which cannot DMA to full 32 bits. Apart
187 from support for the HP I/O MMU, this includes support for the software
188 I/O TLB, which allows supporting the broken devices at the expense of
189 wasting some kernel memory (about 2MB by default).
196 Selecting this option will optimize the kernel for use on sn2 based
197 systems, but the resulting kernel binary will not run on other
198 types of ia64 systems. If you have an SGI Altix system, it's safe
199 to select this option. If in doubt, select ia64 generic support
208 Selecting this option will optimize the kernel for use on UV based
209 systems, but the resulting kernel binary will not run on other
210 types of ia64 systems. If you have an SGI UV system, it's safe
211 to select this option. If in doubt, select ia64 generic support
218 config IA64_XEN_GUEST
225 prompt "Processor type"
231 Select your IA-64 processor type. The default is Itanium.
232 This choice is safe for all IA-64 systems, but may not perform
233 optimally on systems with, say, Itanium 2 or newer processors.
238 Select this to configure for an Itanium 2 (McKinley) processor.
243 prompt "Kernel page size"
244 default IA64_PAGE_SIZE_16KB
246 config IA64_PAGE_SIZE_4KB
249 This lets you select the page size of the kernel. For best IA-64
250 performance, a page size of 8KB or 16KB is recommended. For best
251 IA-32 compatibility, a page size of 4KB should be selected (the vast
252 majority of IA-32 binaries work perfectly fine with a larger page
253 size). For Itanium 2 or newer systems, a page size of 64KB can also
256 4KB For best IA-32 compatibility
257 8KB For best IA-64 performance
258 16KB For best IA-64 performance
259 64KB Requires Itanium 2 or newer processor.
261 If you don't know what to do, choose 16KB.
263 config IA64_PAGE_SIZE_8KB
266 config IA64_PAGE_SIZE_16KB
269 config IA64_PAGE_SIZE_64KB
276 prompt "Page Table Levels"
283 depends on !IA64_PAGE_SIZE_64KB
294 source kernel/Kconfig.hz
302 # align cache-sensitive data to 128 bytes
303 config IA64_L1_CACHE_SHIFT
305 default "7" if MCKINLEY
306 default "6" if ITANIUM
309 bool "Cyclone (EXA) Time Source support"
311 Say Y here to enable support for IBM EXA Cyclone time source.
312 If you're unsure, answer N.
316 depends on !IA64_HP_SIM
319 config FORCE_MAX_ZONEORDER
320 int "MAX_ORDER (11 - 17)" if !HUGETLB_PAGE
321 range 11 17 if !HUGETLB_PAGE
322 default "17" if HUGETLB_PAGE
325 config VIRT_CPU_ACCOUNTING
326 bool "Deterministic task and CPU time accounting"
329 Select this option to enable more accurate task and CPU time
330 accounting. This is done by reading a CPU counter on each
331 kernel entry and exit and on transitions within the kernel
332 between system, softirq and hardirq state, so there is a
333 small performance impact.
334 If in doubt, say N here.
337 bool "Symmetric multi-processing support"
338 select USE_GENERIC_SMP_HELPERS
340 This enables support for systems with more than one CPU. If you have
341 a system with only one CPU, say N. If you have a system with more
344 If you say N here, the kernel will run on single and multiprocessor
345 systems, but will use only one CPU of a multiprocessor system. If
346 you say Y here, the kernel will run on many, but not all,
347 single processor systems. On a single processor system, the kernel
348 will run faster if you say N here.
350 See also the SMP-HOWTO available at
351 <http://www.tldp.org/docs.html#howto>.
353 If you don't know what to do here, say N.
356 int "Maximum number of CPUs (2-4096)"
361 You should set this to the number of CPUs in your system, but
362 keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
363 only use 2 CPUs on a >2 CPU system. Setting this to a value larger
364 than 64 will cause the use of a CPU mask array, causing a small
368 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
369 depends on SMP && EXPERIMENTAL
373 Say Y here to experiment with turning CPUs off and on. CPUs
374 can be controlled through /sys/devices/system/cpu/cpu#.
375 Say N if you want to disable CPU hotplug.
377 config ARCH_ENABLE_MEMORY_HOTPLUG
380 config ARCH_ENABLE_MEMORY_HOTREMOVE
384 bool "SMT scheduler support"
387 Improves the CPU scheduler's decision making when dealing with
388 Intel IA64 chips with MultiThreading at a cost of slightly increased
389 overhead in some places. If unsure say N here.
391 config PERMIT_BSP_REMOVE
392 bool "Support removal of Bootstrap Processor"
393 depends on HOTPLUG_CPU
396 Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
399 config FORCE_CPEI_RETARGET
400 bool "Force assumption that CPEI can be re-targetted"
401 depends on PERMIT_BSP_REMOVE
404 Say Y if you need to force the assumption that CPEI can be re-targetted to
405 any cpu in the system. This hint is available via ACPI 3.0 specifications.
406 Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
407 This option it useful to enable this feature on older BIOS's as well.
408 You can also enable this by using boot command line option force_cpei=1.
410 source "kernel/Kconfig.preempt"
414 config ARCH_SELECT_MEMORY_MODEL
417 config ARCH_DISCONTIGMEM_ENABLE
420 Say Y to support efficient handling of discontiguous physical memory,
421 for architectures which are either NUMA (Non-Uniform Memory Access)
422 or have huge holes in the physical address space for other reasons.
423 See <file:Documentation/vm/numa> for more.
425 config ARCH_FLATMEM_ENABLE
428 config ARCH_SPARSEMEM_ENABLE
430 depends on ARCH_DISCONTIGMEM_ENABLE
431 select SPARSEMEM_VMEMMAP_ENABLE
433 config ARCH_DISCONTIGMEM_DEFAULT
434 def_bool y if (IA64_SGI_SN2 || IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB)
435 depends on ARCH_DISCONTIGMEM_ENABLE
439 depends on !IA64_HP_SIM && !FLATMEM
440 default y if IA64_SGI_SN2
441 select ACPI_NUMA if ACPI
443 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
444 Access). This option is for configuring high-end multiprocessor
445 server systems. If in doubt, say N.
448 int "Max num nodes shift(3-10)"
451 depends on NEED_MULTIPLE_NODES
453 This option specifies the maximum number of nodes in your SSI system.
454 MAX_NUMNODES will be 2^(This value).
455 If in doubt, use the default.
457 config ARCH_POPULATES_NODE_MAP
460 # VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent.
461 # VIRTUAL_MEM_MAP has been retained for historical reasons.
462 config VIRTUAL_MEM_MAP
463 bool "Virtual mem map"
464 depends on !SPARSEMEM
465 default y if !IA64_HP_SIM
467 Say Y to compile the kernel with support for a virtual mem map.
468 This code also only takes effect if a memory hole of greater than
469 1 Gb is found during boot. You must turn this option on if you
470 require the DISCONTIGMEM option for your machine. If you are
475 default y if VIRTUAL_MEM_MAP
477 config HAVE_ARCH_EARLY_PFN_TO_NID
479 depends on NEED_MULTIPLE_NODES
481 config HAVE_ARCH_NODEDATA_EXTENSION
486 bool "Support for Linux/x86 binaries"
488 IA-64 processors can execute IA-32 (X86) instructions. By
489 saying Y here, the kernel will include IA-32 system call
490 emulation support which makes it possible to transparently
491 run IA-32 Linux binaries on an IA-64 Linux system.
496 depends on IA32_SUPPORT
499 config COMPAT_FOR_U64_ALIGNMENT
502 config IA64_MCA_RECOVERY
503 tristate "MCA recovery from errors other than TLB."
506 bool "Performance monitor support"
508 Selects whether support for the IA-64 performance monitor hardware
509 is included in the kernel. This makes some kernel data-structures a
510 little bigger and slows down execution a bit, but it is generally
511 a good idea to turn this on. If you're unsure, say Y.
514 tristate "/proc/pal support"
516 If you say Y here, you are able to get PAL (Processor Abstraction
517 Layer) information in /proc/pal. This contains useful information
518 about the processors in your systems, such as cache and TLB sizes
519 and the PAL firmware version in use.
521 To use this option, you have to ensure that the "/proc file system
522 support" (CONFIG_PROC_FS) is enabled, too.
524 config IA64_MC_ERR_INJECT
525 tristate "MC error injection support"
527 Adds support for MC error injection. If enabled, the kernel
528 will provide a sysfs interface for user applications to
529 call MC error injection PAL procedures to inject various errors.
530 This is a useful tool for MCA testing.
532 If you're unsure, do not select this option.
535 def_bool y if (IA64_SGI_SN2 || IA64_GENERIC)
538 bool "ESI (Extensible SAL Interface) support"
540 If you say Y here, support is built into the kernel to
541 make ESI calls. ESI calls are used to support vendor-specific
542 firmware extensions, such as the ability to inject memory-errors
543 for test-purposes. If you're unsure, say N.
545 config IA64_HP_AML_NFW
546 bool "Support ACPI AML calls to native firmware"
548 This driver installs a global ACPI Operation Region handler for
549 region 0xA1. AML methods can use this OpRegion to call arbitrary
550 native firmware functions. The driver installs the OpRegion
551 handler if there is an HPQ5001 device or if the user supplies
552 the "force" module parameter, e.g., with the "aml_nfw.force"
553 kernel command line option.
555 source "drivers/sn/Kconfig"
558 bool "kexec system call (EXPERIMENTAL)"
559 depends on EXPERIMENTAL && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
561 kexec is a system call that implements the ability to shutdown your
562 current kernel, and to start another kernel. It is like a reboot
563 but it is independent of the system firmware. And like a reboot
564 you can start any kernel with it, not just Linux.
566 The name comes from the similarity to the exec system call.
568 It is an ongoing process to be certain the hardware in a machine
569 is properly shutdown, so do not be surprised if this code does not
570 initially work for you. It may help to enable device hotplugging
571 support. As of this writing the exact hardware interface is
572 strongly in flux, so no good recommendation can be made.
575 bool "kernel crash dumps"
576 depends on IA64_MCA_RECOVERY && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
578 Generate crash dump after being started by kexec.
580 source "drivers/firmware/Kconfig"
582 source "fs/Kconfig.binfmt"
586 menu "Power management and ACPI"
588 source "kernel/power/Kconfig"
590 source "drivers/acpi/Kconfig"
594 source "arch/ia64/kernel/cpufreq/Kconfig"
602 menu "Bus options (PCI, PCMCIA)"
607 Real IA-64 machines all have PCI/PCI-X/PCI Express busses. Say Y
608 here unless you are using a simulator without PCI support.
616 source "drivers/pci/pcie/Kconfig"
618 source "drivers/pci/Kconfig"
620 source "drivers/pci/hotplug/Kconfig"
622 source "drivers/pcmcia/Kconfig"
625 bool "Support for DMA Remapping Devices (EXPERIMENTAL)"
626 depends on IA64_GENERIC && ACPI && EXPERIMENTAL
628 DMA remapping (DMAR) devices support enables independent address
629 translations for Direct Memory Access (DMA) from devices.
630 These DMA remapping devices are reported via ACPI tables
631 and include PCI device scope covered by these DMA
640 source "drivers/Kconfig"
643 tristate "Memory special operations driver"
645 select IA64_UNCACHED_ALLOCATOR
647 If you have an ia64 and you want to enable memory special
648 operations support (formerly known as fetchop), say Y here,
653 source "arch/ia64/kvm/Kconfig"
658 # Use the generic interrupt handling code in kernel/irq/:
660 config GENERIC_HARDIRQS
664 config GENERIC_IRQ_PROBE
668 config GENERIC_PENDING_IRQ
670 depends on GENERIC_HARDIRQS && SMP
678 def_bool (IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB || IA64_GENERIC || SWIOTLB)
680 source "arch/ia64/hp/sim/Kconfig"
682 source "arch/ia64/Kconfig.debug"
684 source "security/Kconfig"
686 source "crypto/Kconfig"