3 source "kernel/Kconfig.freezer"
5 menu "Processor type and features"
9 select PCI if (!IA64_HP_SIM)
10 select ACPI if (!IA64_HP_SIM)
11 select PM if (!IA64_HP_SIM)
12 select ARCH_SUPPORTS_MSI
13 select HAVE_UNSTABLE_SCHED_CLOCK
17 select HAVE_KRETPROBES
18 select HAVE_FTRACE_MCOUNT_RECORD
19 select HAVE_DYNAMIC_FTRACE if (!ITANIUM)
20 select HAVE_FUNCTION_TRACER
23 select HAVE_ARCH_TRACEHOOK
24 select HAVE_DMA_API_DEBUG
25 select HAVE_GENERIC_HARDIRQS
26 select GENERIC_IRQ_PROBE
27 select GENERIC_PENDING_IRQ if SMP
31 The Itanium Processor Family is Intel's 64-bit successor to
32 the 32-bit X86 line. The IA-64 Linux project has a home
33 page at <http://www.linuxia64.org/> and a mailing list at
34 <linux-ia64@vger.kernel.org>.
38 select ATA_NONSTANDARD if ATA
43 depends on !IA64_SGI_SN2
53 config ARCH_DMA_ADDR_T_64BIT
56 config NEED_DMA_MAP_STATE
59 config NEED_SG_DMA_LENGTH
65 config STACKTRACE_SUPPORT
68 config GENERIC_LOCKBREAK
71 config RWSEM_XCHGADD_ALGORITHM
75 config HUGETLB_PAGE_SIZE_VARIABLE
77 depends on HUGETLB_PAGE
80 config GENERIC_FIND_NEXT_BIT
84 config GENERIC_CALIBRATE_DELAY
88 config GENERIC_TIME_VSYSCALL
92 config HAVE_SETUP_PER_CPU_AREA
107 config SCHED_OMIT_FRAME_POINTER
111 config IA64_UNCACHED_ALLOCATOR
113 select GENERIC_ALLOCATOR
115 config ARCH_USES_PG_UNCACHED
117 depends on IA64_UNCACHED_ALLOCATOR
123 menuconfig PARAVIRT_GUEST
124 bool "Paravirtualized guest support"
126 Say Y here to get to see options related to running Linux under
127 various hypervisors. This option alone does not add any kernel code.
129 If you say N, all options in this submenu will be skipped and disabled.
134 bool "Enable paravirtualization code"
135 depends on PARAVIRT_GUEST
140 This changes the kernel so it can modify itself when it is run
141 under a hypervisor, potentially improving performance significantly
142 over full virtualization. However, when run without a hypervisor
143 the kernel is theoretically slower and slightly larger.
146 source "arch/ia64/xen/Kconfig"
162 This selects the system type of your hardware. A "generic" kernel
163 will run on any supported IA-64 system. However, if you configure
164 a kernel for your specific system, it will be faster and smaller.
166 generic For any supported IA-64 system
167 DIG-compliant For DIG ("Developer's Interface Guide") compliant systems
168 DIG+Intel+IOMMU For DIG systems with Intel IOMMU
169 HP-zx1/sx1000 For HP systems
170 HP-zx1/sx1000+swiotlb For HP systems with (broken) DMA-constrained devices.
171 SGI-SN2 For SGI Altix systems
172 SGI-UV For SGI UV systems
173 Ski-simulator For the HP simulator <http://www.hpl.hp.com/research/linux/ski/>
174 Xen-domU For xen domU system
176 If you don't know what to do, choose "generic".
183 bool "DIG+Intel+IOMMU"
190 Build a kernel that runs on HP zx1 and sx1000 systems. This adds
191 support for the HP I/O MMU.
193 config IA64_HP_ZX1_SWIOTLB
194 bool "HP-zx1/sx1000 with software I/O TLB"
197 Build a kernel that runs on HP zx1 and sx1000 systems even when they
198 have broken PCI devices which cannot DMA to full 32 bits. Apart
199 from support for the HP I/O MMU, this includes support for the software
200 I/O TLB, which allows supporting the broken devices at the expense of
201 wasting some kernel memory (about 2MB by default).
208 Selecting this option will optimize the kernel for use on sn2 based
209 systems, but the resulting kernel binary will not run on other
210 types of ia64 systems. If you have an SGI Altix system, it's safe
211 to select this option. If in doubt, select ia64 generic support
220 Selecting this option will optimize the kernel for use on UV based
221 systems, but the resulting kernel binary will not run on other
222 types of ia64 systems. If you have an SGI UV system, it's safe
223 to select this option. If in doubt, select ia64 generic support
230 config IA64_XEN_GUEST
235 Build a kernel that runs on Xen guest domain. At this moment only
236 16KB page size in supported.
241 prompt "Processor type"
247 Select your IA-64 processor type. The default is Itanium.
248 This choice is safe for all IA-64 systems, but may not perform
249 optimally on systems with, say, Itanium 2 or newer processors.
254 Select this to configure for an Itanium 2 (McKinley) processor.
259 prompt "Kernel page size"
260 default IA64_PAGE_SIZE_16KB
262 config IA64_PAGE_SIZE_4KB
265 This lets you select the page size of the kernel. For best IA-64
266 performance, a page size of 8KB or 16KB is recommended. For best
267 IA-32 compatibility, a page size of 4KB should be selected (the vast
268 majority of IA-32 binaries work perfectly fine with a larger page
269 size). For Itanium 2 or newer systems, a page size of 64KB can also
272 4KB For best IA-32 compatibility
273 8KB For best IA-64 performance
274 16KB For best IA-64 performance
275 64KB Requires Itanium 2 or newer processor.
277 If you don't know what to do, choose 16KB.
279 config IA64_PAGE_SIZE_8KB
282 config IA64_PAGE_SIZE_16KB
285 config IA64_PAGE_SIZE_64KB
292 prompt "Page Table Levels"
299 depends on !IA64_PAGE_SIZE_64KB
310 source kernel/Kconfig.hz
318 # align cache-sensitive data to 128 bytes
319 config IA64_L1_CACHE_SHIFT
321 default "7" if MCKINLEY
322 default "6" if ITANIUM
325 bool "Cyclone (EXA) Time Source support"
327 Say Y here to enable support for IBM EXA Cyclone time source.
328 If you're unsure, answer N.
332 depends on !IA64_HP_SIM
335 config FORCE_MAX_ZONEORDER
336 int "MAX_ORDER (11 - 17)" if !HUGETLB_PAGE
337 range 11 17 if !HUGETLB_PAGE
338 default "17" if HUGETLB_PAGE
341 config VIRT_CPU_ACCOUNTING
342 bool "Deterministic task and CPU time accounting"
345 Select this option to enable more accurate task and CPU time
346 accounting. This is done by reading a CPU counter on each
347 kernel entry and exit and on transitions within the kernel
348 between system, softirq and hardirq state, so there is a
349 small performance impact.
350 If in doubt, say N here.
353 bool "Symmetric multi-processing support"
354 select USE_GENERIC_SMP_HELPERS
356 This enables support for systems with more than one CPU. If you have
357 a system with only one CPU, say N. If you have a system with more
360 If you say N here, the kernel will run on single and multiprocessor
361 systems, but will use only one CPU of a multiprocessor system. If
362 you say Y here, the kernel will run on many, but not all,
363 single processor systems. On a single processor system, the kernel
364 will run faster if you say N here.
366 See also the SMP-HOWTO available at
367 <http://www.tldp.org/docs.html#howto>.
369 If you don't know what to do here, say N.
372 int "Maximum number of CPUs (2-4096)"
377 You should set this to the number of CPUs in your system, but
378 keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
379 only use 2 CPUs on a >2 CPU system. Setting this to a value larger
380 than 64 will cause the use of a CPU mask array, causing a small
384 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
385 depends on SMP && EXPERIMENTAL
389 Say Y here to experiment with turning CPUs off and on. CPUs
390 can be controlled through /sys/devices/system/cpu/cpu#.
391 Say N if you want to disable CPU hotplug.
393 config ARCH_ENABLE_MEMORY_HOTPLUG
396 config ARCH_ENABLE_MEMORY_HOTREMOVE
400 bool "SMT scheduler support"
403 Improves the CPU scheduler's decision making when dealing with
404 Intel IA64 chips with MultiThreading at a cost of slightly increased
405 overhead in some places. If unsure say N here.
407 config PERMIT_BSP_REMOVE
408 bool "Support removal of Bootstrap Processor"
409 depends on HOTPLUG_CPU
412 Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
415 config FORCE_CPEI_RETARGET
416 bool "Force assumption that CPEI can be re-targetted"
417 depends on PERMIT_BSP_REMOVE
420 Say Y if you need to force the assumption that CPEI can be re-targetted to
421 any cpu in the system. This hint is available via ACPI 3.0 specifications.
422 Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
423 This option it useful to enable this feature on older BIOS's as well.
424 You can also enable this by using boot command line option force_cpei=1.
426 source "kernel/Kconfig.preempt"
430 config ARCH_SELECT_MEMORY_MODEL
433 config ARCH_DISCONTIGMEM_ENABLE
436 Say Y to support efficient handling of discontiguous physical memory,
437 for architectures which are either NUMA (Non-Uniform Memory Access)
438 or have huge holes in the physical address space for other reasons.
439 See <file:Documentation/vm/numa> for more.
441 config ARCH_FLATMEM_ENABLE
444 config ARCH_SPARSEMEM_ENABLE
446 depends on ARCH_DISCONTIGMEM_ENABLE
447 select SPARSEMEM_VMEMMAP_ENABLE
449 config ARCH_DISCONTIGMEM_DEFAULT
450 def_bool y if (IA64_SGI_SN2 || IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB)
451 depends on ARCH_DISCONTIGMEM_ENABLE
455 depends on !IA64_HP_SIM && !FLATMEM
456 default y if IA64_SGI_SN2
457 select ACPI_NUMA if ACPI
459 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
460 Access). This option is for configuring high-end multiprocessor
461 server systems. If in doubt, say N.
464 int "Max num nodes shift(3-10)"
467 depends on NEED_MULTIPLE_NODES
469 This option specifies the maximum number of nodes in your SSI system.
470 MAX_NUMNODES will be 2^(This value).
471 If in doubt, use the default.
473 config ARCH_POPULATES_NODE_MAP
476 # VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent.
477 # VIRTUAL_MEM_MAP has been retained for historical reasons.
478 config VIRTUAL_MEM_MAP
479 bool "Virtual mem map"
480 depends on !SPARSEMEM
481 default y if !IA64_HP_SIM
483 Say Y to compile the kernel with support for a virtual mem map.
484 This code also only takes effect if a memory hole of greater than
485 1 Gb is found during boot. You must turn this option on if you
486 require the DISCONTIGMEM option for your machine. If you are
491 default y if VIRTUAL_MEM_MAP
493 config HAVE_ARCH_EARLY_PFN_TO_NID
494 def_bool NUMA && SPARSEMEM
496 config HAVE_ARCH_NODEDATA_EXTENSION
500 config USE_PERCPU_NUMA_NODE_ID
504 config HAVE_MEMORYLESS_NODES
507 config ARCH_PROC_KCORE_TEXT
509 depends on PROC_KCORE
511 config IA64_MCA_RECOVERY
512 tristate "MCA recovery from errors other than TLB."
515 bool "Performance monitor support"
517 Selects whether support for the IA-64 performance monitor hardware
518 is included in the kernel. This makes some kernel data-structures a
519 little bigger and slows down execution a bit, but it is generally
520 a good idea to turn this on. If you're unsure, say Y.
523 tristate "/proc/pal support"
525 If you say Y here, you are able to get PAL (Processor Abstraction
526 Layer) information in /proc/pal. This contains useful information
527 about the processors in your systems, such as cache and TLB sizes
528 and the PAL firmware version in use.
530 To use this option, you have to ensure that the "/proc file system
531 support" (CONFIG_PROC_FS) is enabled, too.
533 config IA64_MC_ERR_INJECT
534 tristate "MC error injection support"
536 Adds support for MC error injection. If enabled, the kernel
537 will provide a sysfs interface for user applications to
538 call MC error injection PAL procedures to inject various errors.
539 This is a useful tool for MCA testing.
541 If you're unsure, do not select this option.
544 def_bool y if (IA64_SGI_SN2 || IA64_GENERIC)
547 bool "ESI (Extensible SAL Interface) support"
549 If you say Y here, support is built into the kernel to
550 make ESI calls. ESI calls are used to support vendor-specific
551 firmware extensions, such as the ability to inject memory-errors
552 for test-purposes. If you're unsure, say N.
554 config IA64_HP_AML_NFW
555 bool "Support ACPI AML calls to native firmware"
557 This driver installs a global ACPI Operation Region handler for
558 region 0xA1. AML methods can use this OpRegion to call arbitrary
559 native firmware functions. The driver installs the OpRegion
560 handler if there is an HPQ5001 device or if the user supplies
561 the "force" module parameter, e.g., with the "aml_nfw.force"
562 kernel command line option.
564 source "drivers/sn/Kconfig"
567 bool "kexec system call (EXPERIMENTAL)"
568 depends on EXPERIMENTAL && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
570 kexec is a system call that implements the ability to shutdown your
571 current kernel, and to start another kernel. It is like a reboot
572 but it is independent of the system firmware. And like a reboot
573 you can start any kernel with it, not just Linux.
575 The name comes from the similarity to the exec system call.
577 It is an ongoing process to be certain the hardware in a machine
578 is properly shutdown, so do not be surprised if this code does not
579 initially work for you. It may help to enable device hotplugging
580 support. As of this writing the exact hardware interface is
581 strongly in flux, so no good recommendation can be made.
584 bool "kernel crash dumps"
585 depends on IA64_MCA_RECOVERY && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
587 Generate crash dump after being started by kexec.
589 source "drivers/firmware/Kconfig"
591 source "fs/Kconfig.binfmt"
595 menu "Power management and ACPI options"
597 source "kernel/power/Kconfig"
599 source "drivers/acpi/Kconfig"
603 source "arch/ia64/kernel/cpufreq/Kconfig"
611 menu "Bus options (PCI, PCMCIA)"
616 Real IA-64 machines all have PCI/PCI-X/PCI Express busses. Say Y
617 here unless you are using a simulator without PCI support.
625 source "drivers/pci/pcie/Kconfig"
627 source "drivers/pci/Kconfig"
629 source "drivers/pci/hotplug/Kconfig"
631 source "drivers/pcmcia/Kconfig"
634 bool "Support for DMA Remapping Devices (EXPERIMENTAL)"
635 depends on IA64_GENERIC && ACPI && EXPERIMENTAL
637 DMA remapping (DMAR) devices support enables independent address
638 translations for Direct Memory Access (DMA) from devices.
639 These DMA remapping devices are reported via ACPI tables
640 and include PCI device scope covered by these DMA
643 config DMAR_DEFAULT_ON
645 prompt "Enable DMA Remapping Devices by default"
648 Selecting this option will enable a DMAR device at boot time if
649 one is found. If this option is not selected, DMAR support can
650 be enabled by passing intel_iommu=on to the kernel. It is
651 recommended you say N here while the DMAR code remains
660 source "drivers/Kconfig"
662 source "arch/ia64/hp/sim/Kconfig"
665 tristate "Memory special operations driver"
667 select IA64_UNCACHED_ALLOCATOR
669 If you have an ia64 and you want to enable memory special
670 operations support (formerly known as fetchop), say Y here,
675 source "arch/ia64/Kconfig.debug"
677 source "security/Kconfig"
679 source "crypto/Kconfig"
681 source "arch/ia64/kvm/Kconfig"
686 def_bool (IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB || IA64_GENERIC || SWIOTLB)