1 # SPDX-License-Identifier: GPL-2.0
3 int "Page Table Levels" if !IA64_PAGE_SIZE_64KB
4 range 3 4 if !IA64_PAGE_SIZE_64KB
7 menu "Processor type and features"
11 select ARCH_MIGHT_HAVE_PC_PARPORT
12 select ARCH_MIGHT_HAVE_PC_SERIO
14 select ARCH_SUPPORTS_ACPI
15 select ACPI_SYSTEM_POWER_STATES_SUPPORT if ACPI
16 select ARCH_MIGHT_HAVE_ACPI_PDC if ACPI
18 select PCI_DOMAINS if PCI
19 select PCI_SYSCALL if PCI
20 select HAVE_UNSTABLE_SCHED_CLOCK
21 select HAVE_EXIT_THREAD
25 select HAVE_KRETPROBES
26 select HAVE_FTRACE_MCOUNT_RECORD
27 select HAVE_DYNAMIC_FTRACE if (!ITANIUM)
28 select HAVE_FUNCTION_TRACER
30 select HAVE_ARCH_TRACEHOOK
31 select HAVE_MEMBLOCK_NODE_MAP
32 select HAVE_VIRT_CPU_ACCOUNTING
33 select ARCH_HAS_DMA_COHERENT_TO_PFN if SWIOTLB
34 select ARCH_HAS_SYNC_DMA_FOR_CPU if SWIOTLB
36 select GENERIC_IRQ_PROBE
37 select GENERIC_PENDING_IRQ if SMP
38 select GENERIC_IRQ_SHOW
39 select GENERIC_IRQ_LEGACY
40 select ARCH_HAVE_NMI_SAFE_CMPXCHG
42 select GENERIC_SMP_IDLE_THREAD
43 select ARCH_TASK_STRUCT_ON_STACK
44 select ARCH_TASK_STRUCT_ALLOCATOR
45 select ARCH_THREAD_STACK_ALLOCATOR
46 select ARCH_CLOCKSOURCE_DATA
47 select GENERIC_TIME_VSYSCALL
48 select SYSCTL_ARCH_UNALIGN_NO_WARN
49 select HAVE_MOD_ARCH_SPECIFIC
50 select MODULES_USE_ELF_RELA
51 select ARCH_USE_CMPXCHG_LOCKREF
52 select HAVE_ARCH_AUDITSYSCALL
53 select NEED_DMA_MAP_STATE
54 select NEED_SG_DMA_LENGTH
57 The Itanium Processor Family is Intel's 64-bit successor to
58 the 32-bit X86 line. The IA-64 Linux project has a home
59 page at <http://www.linuxia64.org/> and a mailing list at
60 <linux-ia64@vger.kernel.org>.
64 select ATA_NONSTANDARD if ATA
78 config STACKTRACE_SUPPORT
81 config GENERIC_LOCKBREAK
84 config HUGETLB_PAGE_SIZE_VARIABLE
86 depends on HUGETLB_PAGE
89 config GENERIC_CALIBRATE_DELAY
93 config HAVE_SETUP_PER_CPU_AREA
99 select DMI_SCAN_MACHINE_NON_EFI_FALLBACK
106 config SCHED_OMIT_FRAME_POINTER
110 config IA64_UNCACHED_ALLOCATOR
112 select GENERIC_ALLOCATOR
114 config ARCH_USES_PG_UNCACHED
116 depends on IA64_UNCACHED_ALLOCATOR
133 This selects the system type of your hardware. A "generic" kernel
134 will run on any supported IA-64 system. However, if you configure
135 a kernel for your specific system, it will be faster and smaller.
137 generic For any supported IA-64 system
138 DIG-compliant For DIG ("Developer's Interface Guide") compliant systems
139 DIG+Intel+IOMMU For DIG systems with Intel IOMMU
140 HP-zx1/sx1000 For HP systems
141 SGI-UV For SGI UV systems
143 If you don't know what to do, choose "generic".
150 bool "DIG+Intel+IOMMU"
157 Build a kernel that runs on HP zx1 and sx1000 systems. This adds
158 support for the HP I/O MMU.
166 Selecting this option will optimize the kernel for use on UV based
167 systems, but the resulting kernel binary will not run on other
168 types of ia64 systems. If you have an SGI UV system, it's safe
169 to select this option. If in doubt, select ia64 generic support
175 prompt "Processor type"
181 Select your IA-64 processor type. The default is Itanium.
182 This choice is safe for all IA-64 systems, but may not perform
183 optimally on systems with, say, Itanium 2 or newer processors.
188 Select this to configure for an Itanium 2 (McKinley) processor.
193 prompt "Kernel page size"
194 default IA64_PAGE_SIZE_16KB
196 config IA64_PAGE_SIZE_4KB
199 This lets you select the page size of the kernel. For best IA-64
200 performance, a page size of 8KB or 16KB is recommended. For best
201 IA-32 compatibility, a page size of 4KB should be selected (the vast
202 majority of IA-32 binaries work perfectly fine with a larger page
203 size). For Itanium 2 or newer systems, a page size of 64KB can also
206 4KB For best IA-32 compatibility
207 8KB For best IA-64 performance
208 16KB For best IA-64 performance
209 64KB Requires Itanium 2 or newer processor.
211 If you don't know what to do, choose 16KB.
213 config IA64_PAGE_SIZE_8KB
216 config IA64_PAGE_SIZE_16KB
219 config IA64_PAGE_SIZE_64KB
225 source "kernel/Kconfig.hz"
232 # align cache-sensitive data to 128 bytes
233 config IA64_L1_CACHE_SHIFT
235 default "7" if MCKINLEY
236 default "6" if ITANIUM
239 bool "Cyclone (EXA) Time Source support"
241 Say Y here to enable support for IBM EXA Cyclone time source.
242 If you're unsure, answer N.
244 config FORCE_MAX_ZONEORDER
245 int "MAX_ORDER (11 - 17)" if !HUGETLB_PAGE
246 range 11 17 if !HUGETLB_PAGE
247 default "17" if HUGETLB_PAGE
251 bool "Symmetric multi-processing support"
253 This enables support for systems with more than one CPU. If you have
254 a system with only one CPU, say N. If you have a system with more
257 If you say N here, the kernel will run on single and multiprocessor
258 systems, but will use only one CPU of a multiprocessor system. If
259 you say Y here, the kernel will run on many, but not all,
260 single processor systems. On a single processor system, the kernel
261 will run faster if you say N here.
263 See also the SMP-HOWTO available at
264 <http://www.tldp.org/docs.html#howto>.
266 If you don't know what to do here, say N.
269 int "Maximum number of CPUs (2-4096)"
274 You should set this to the number of CPUs in your system, but
275 keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
276 only use 2 CPUs on a >2 CPU system. Setting this to a value larger
277 than 64 will cause the use of a CPU mask array, causing a small
281 bool "Support for hot-pluggable CPUs"
285 Say Y here to experiment with turning CPUs off and on. CPUs
286 can be controlled through /sys/devices/system/cpu/cpu#.
287 Say N if you want to disable CPU hotplug.
289 config ARCH_ENABLE_MEMORY_HOTPLUG
292 config ARCH_ENABLE_MEMORY_HOTREMOVE
296 bool "SMT scheduler support"
299 Improves the CPU scheduler's decision making when dealing with
300 Intel IA64 chips with MultiThreading at a cost of slightly increased
301 overhead in some places. If unsure say N here.
303 config PERMIT_BSP_REMOVE
304 bool "Support removal of Bootstrap Processor"
305 depends on HOTPLUG_CPU
308 Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
311 config FORCE_CPEI_RETARGET
312 bool "Force assumption that CPEI can be re-targeted"
313 depends on PERMIT_BSP_REMOVE
316 Say Y if you need to force the assumption that CPEI can be re-targeted to
317 any cpu in the system. This hint is available via ACPI 3.0 specifications.
318 Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
319 This option it useful to enable this feature on older BIOS's as well.
320 You can also enable this by using boot command line option force_cpei=1.
322 config ARCH_SELECT_MEMORY_MODEL
325 config ARCH_DISCONTIGMEM_ENABLE
328 Say Y to support efficient handling of discontiguous physical memory,
329 for architectures which are either NUMA (Non-Uniform Memory Access)
330 or have huge holes in the physical address space for other reasons.
331 See <file:Documentation/vm/numa.rst> for more.
333 config ARCH_FLATMEM_ENABLE
336 config ARCH_SPARSEMEM_ENABLE
338 depends on ARCH_DISCONTIGMEM_ENABLE
339 select SPARSEMEM_VMEMMAP_ENABLE
341 config ARCH_DISCONTIGMEM_DEFAULT
342 def_bool y if (IA64_GENERIC || IA64_HP_ZX1)
343 depends on ARCH_DISCONTIGMEM_ENABLE
348 select ACPI_NUMA if ACPI
350 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
351 Access). This option is for configuring high-end multiprocessor
352 server systems. If in doubt, say N.
355 int "Max num nodes shift(3-10)"
358 depends on NEED_MULTIPLE_NODES
360 This option specifies the maximum number of nodes in your SSI system.
361 MAX_NUMNODES will be 2^(This value).
362 If in doubt, use the default.
364 # VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent.
365 # VIRTUAL_MEM_MAP has been retained for historical reasons.
366 config VIRTUAL_MEM_MAP
367 bool "Virtual mem map"
368 depends on !SPARSEMEM
371 Say Y to compile the kernel with support for a virtual mem map.
372 This code also only takes effect if a memory hole of greater than
373 1 Gb is found during boot. You must turn this option on if you
374 require the DISCONTIGMEM option for your machine. If you are
379 default y if VIRTUAL_MEM_MAP
381 config HAVE_ARCH_EARLY_PFN_TO_NID
382 def_bool NUMA && SPARSEMEM
384 config HAVE_ARCH_NODEDATA_EXTENSION
388 config USE_PERCPU_NUMA_NODE_ID
392 config HAVE_MEMORYLESS_NODES
395 config ARCH_PROC_KCORE_TEXT
397 depends on PROC_KCORE
399 config IA64_MCA_RECOVERY
400 tristate "MCA recovery from errors other than TLB."
403 bool "Performance monitor support"
406 Selects whether support for the IA-64 performance monitor hardware
407 is included in the kernel. This makes some kernel data-structures a
408 little bigger and slows down execution a bit, but it is generally
409 a good idea to turn this on. If you're unsure, say Y.
412 tristate "/proc/pal support"
414 If you say Y here, you are able to get PAL (Processor Abstraction
415 Layer) information in /proc/pal. This contains useful information
416 about the processors in your systems, such as cache and TLB sizes
417 and the PAL firmware version in use.
419 To use this option, you have to ensure that the "/proc file system
420 support" (CONFIG_PROC_FS) is enabled, too.
422 config IA64_MC_ERR_INJECT
423 tristate "MC error injection support"
425 Adds support for MC error injection. If enabled, the kernel
426 will provide a sysfs interface for user applications to
427 call MC error injection PAL procedures to inject various errors.
428 This is a useful tool for MCA testing.
430 If you're unsure, do not select this option.
433 bool "ESI (Extensible SAL Interface) support"
435 If you say Y here, support is built into the kernel to
436 make ESI calls. ESI calls are used to support vendor-specific
437 firmware extensions, such as the ability to inject memory-errors
438 for test-purposes. If you're unsure, say N.
440 config IA64_HP_AML_NFW
441 bool "Support ACPI AML calls to native firmware"
443 This driver installs a global ACPI Operation Region handler for
444 region 0xA1. AML methods can use this OpRegion to call arbitrary
445 native firmware functions. The driver installs the OpRegion
446 handler if there is an HPQ5001 device or if the user supplies
447 the "force" module parameter, e.g., with the "aml_nfw.force"
448 kernel command line option.
451 bool "kexec system call"
452 depends on !SMP || HOTPLUG_CPU
455 kexec is a system call that implements the ability to shutdown your
456 current kernel, and to start another kernel. It is like a reboot
457 but it is independent of the system firmware. And like a reboot
458 you can start any kernel with it, not just Linux.
460 The name comes from the similarity to the exec system call.
462 It is an ongoing process to be certain the hardware in a machine
463 is properly shutdown, so do not be surprised if this code does not
464 initially work for you. As of this writing the exact hardware
465 interface is strongly in flux, so no good recommendation can be
469 bool "kernel crash dumps"
470 depends on IA64_MCA_RECOVERY && (!SMP || HOTPLUG_CPU)
472 Generate crash dump after being started by kexec.
474 source "drivers/firmware/Kconfig"
478 menu "Power management and ACPI options"
480 source "kernel/power/Kconfig"
482 source "drivers/acpi/Kconfig"
485 menu "CPU Frequency scaling"
486 source "drivers/cpufreq/Kconfig"
493 tristate "Memory special operations driver"
495 select IA64_UNCACHED_ALLOCATOR
497 If you have an ia64 and you want to enable memory special
498 operations support (formerly known as fetchop), say Y here,