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 ACPI_NUMA if NUMA
15 select ARCH_SUPPORTS_ACPI
16 select ACPI_SYSTEM_POWER_STATES_SUPPORT if ACPI
17 select ARCH_MIGHT_HAVE_ACPI_PDC if ACPI
19 select PCI_DOMAINS if PCI
21 select PCI_SYSCALL if PCI
22 select HAVE_ASM_MODVERSIONS
23 select HAVE_UNSTABLE_SCHED_CLOCK
24 select HAVE_EXIT_THREAD
28 select HAVE_KRETPROBES
29 select HAVE_FTRACE_MCOUNT_RECORD
30 select HAVE_DYNAMIC_FTRACE if (!ITANIUM)
31 select HAVE_FUNCTION_TRACER
33 select HAVE_ARCH_TRACEHOOK
34 select HAVE_VIRT_CPU_ACCOUNTING
35 select DMA_NONCOHERENT_MMAP
36 select ARCH_HAS_SYNC_DMA_FOR_CPU
38 select GENERIC_IRQ_PROBE
39 select GENERIC_PENDING_IRQ if SMP
40 select GENERIC_IRQ_SHOW
41 select GENERIC_IRQ_LEGACY
42 select ARCH_HAVE_NMI_SAFE_CMPXCHG
44 select GENERIC_SMP_IDLE_THREAD
45 select ARCH_TASK_STRUCT_ON_STACK
46 select ARCH_TASK_STRUCT_ALLOCATOR
47 select ARCH_THREAD_STACK_ALLOCATOR
48 select ARCH_CLOCKSOURCE_DATA
49 select GENERIC_TIME_VSYSCALL
51 select SYSCTL_ARCH_UNALIGN_NO_WARN
52 select HAVE_MOD_ARCH_SPECIFIC
53 select MODULES_USE_ELF_RELA
54 select ARCH_USE_CMPXCHG_LOCKREF
55 select HAVE_ARCH_AUDITSYSCALL
56 select NEED_DMA_MAP_STATE
57 select NEED_SG_DMA_LENGTH
58 select NUMA if !FLATMEM
61 The Itanium Processor Family is Intel's 64-bit successor to
62 the 32-bit X86 line. The IA-64 Linux project has a home
63 page at <http://www.linuxia64.org/> and a mailing list at
68 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
123 prompt "Processor type"
129 Select your IA-64 processor type. The default is Itanium.
130 This choice is safe for all IA-64 systems, but may not perform
131 optimally on systems with, say, Itanium 2 or newer processors.
136 Select this to configure for an Itanium 2 (McKinley) processor.
141 prompt "Kernel page size"
142 default IA64_PAGE_SIZE_16KB
144 config IA64_PAGE_SIZE_4KB
147 This lets you select the page size of the kernel. For best IA-64
148 performance, a page size of 8KB or 16KB is recommended. For best
149 IA-32 compatibility, a page size of 4KB should be selected (the vast
150 majority of IA-32 binaries work perfectly fine with a larger page
151 size). For Itanium 2 or newer systems, a page size of 64KB can also
154 4KB For best IA-32 compatibility
155 8KB For best IA-64 performance
156 16KB For best IA-64 performance
157 64KB Requires Itanium 2 or newer processor.
159 If you don't know what to do, choose 16KB.
161 config IA64_PAGE_SIZE_8KB
164 config IA64_PAGE_SIZE_16KB
167 config IA64_PAGE_SIZE_64KB
173 source "kernel/Kconfig.hz"
180 # align cache-sensitive data to 128 bytes
181 config IA64_L1_CACHE_SHIFT
183 default "7" if MCKINLEY
184 default "6" if ITANIUM
187 bool "SGI-UV support"
189 Selecting this option will add specific support for running on SGI
190 UV based systems. If you have an SGI UV system or are building a
191 distro kernel, select this option.
193 config IA64_HP_SBA_IOMMU
194 bool "HP SBA IOMMU support"
197 Say Y here to add support for the SBA IOMMU found on HP zx1 and
198 sx1000 systems. If you're unsure, answer Y.
201 bool "Cyclone (EXA) Time Source support"
203 Say Y here to enable support for IBM EXA Cyclone time source.
204 If you're unsure, answer N.
206 config FORCE_MAX_ZONEORDER
207 int "MAX_ORDER (11 - 17)" if !HUGETLB_PAGE
208 range 11 17 if !HUGETLB_PAGE
209 default "17" if HUGETLB_PAGE
213 bool "Symmetric multi-processing support"
215 This enables support for systems with more than one CPU. If you have
216 a system with only one CPU, say N. If you have a system with more
219 If you say N here, the kernel will run on single and multiprocessor
220 systems, but will use only one CPU of a multiprocessor system. If
221 you say Y here, the kernel will run on many, but not all,
222 single processor systems. On a single processor system, the kernel
223 will run faster if you say N here.
225 See also the SMP-HOWTO available at
226 <http://www.tldp.org/docs.html#howto>.
228 If you don't know what to do here, say N.
231 int "Maximum number of CPUs (2-4096)"
236 You should set this to the number of CPUs in your system, but
237 keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
238 only use 2 CPUs on a >2 CPU system. Setting this to a value larger
239 than 64 will cause the use of a CPU mask array, causing a small
243 bool "Support for hot-pluggable CPUs"
247 Say Y here to experiment with turning CPUs off and on. CPUs
248 can be controlled through /sys/devices/system/cpu/cpu#.
249 Say N if you want to disable CPU hotplug.
251 config ARCH_ENABLE_MEMORY_HOTPLUG
254 config ARCH_ENABLE_MEMORY_HOTREMOVE
258 bool "SMT scheduler support"
261 Improves the CPU scheduler's decision making when dealing with
262 Intel IA64 chips with MultiThreading at a cost of slightly increased
263 overhead in some places. If unsure say N here.
265 config PERMIT_BSP_REMOVE
266 bool "Support removal of Bootstrap Processor"
267 depends on HOTPLUG_CPU
270 Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
273 config FORCE_CPEI_RETARGET
274 bool "Force assumption that CPEI can be re-targeted"
275 depends on PERMIT_BSP_REMOVE
278 Say Y if you need to force the assumption that CPEI can be re-targeted to
279 any cpu in the system. This hint is available via ACPI 3.0 specifications.
280 Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
281 This option it useful to enable this feature on older BIOS's as well.
282 You can also enable this by using boot command line option force_cpei=1.
284 config ARCH_SELECT_MEMORY_MODEL
287 config ARCH_DISCONTIGMEM_ENABLE
290 Say Y to support efficient handling of discontiguous physical memory,
291 for architectures which are either NUMA (Non-Uniform Memory Access)
292 or have huge holes in the physical address space for other reasons.
293 See <file:Documentation/vm/numa.rst> for more.
295 config ARCH_FLATMEM_ENABLE
298 config ARCH_SPARSEMEM_ENABLE
300 depends on ARCH_DISCONTIGMEM_ENABLE
301 select SPARSEMEM_VMEMMAP_ENABLE
303 config ARCH_DISCONTIGMEM_DEFAULT
305 depends on ARCH_DISCONTIGMEM_ENABLE
312 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
313 Access). This option is for configuring high-end multiprocessor
314 server systems. If in doubt, say N.
317 int "Max num nodes shift(3-10)"
320 depends on NEED_MULTIPLE_NODES
322 This option specifies the maximum number of nodes in your SSI system.
323 MAX_NUMNODES will be 2^(This value).
324 If in doubt, use the default.
326 # VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent.
327 # VIRTUAL_MEM_MAP has been retained for historical reasons.
328 config VIRTUAL_MEM_MAP
329 bool "Virtual mem map"
330 depends on !SPARSEMEM
333 Say Y to compile the kernel with support for a virtual mem map.
334 This code also only takes effect if a memory hole of greater than
335 1 Gb is found during boot. You must turn this option on if you
336 require the DISCONTIGMEM option for your machine. If you are
341 default y if VIRTUAL_MEM_MAP
343 config HAVE_ARCH_EARLY_PFN_TO_NID
344 def_bool NUMA && SPARSEMEM
346 config HAVE_ARCH_NODEDATA_EXTENSION
350 config USE_PERCPU_NUMA_NODE_ID
354 config HAVE_MEMORYLESS_NODES
357 config ARCH_PROC_KCORE_TEXT
359 depends on PROC_KCORE
361 config IA64_MCA_RECOVERY
362 tristate "MCA recovery from errors other than TLB."
365 bool "Performance monitor support"
368 Selects whether support for the IA-64 performance monitor hardware
369 is included in the kernel. This makes some kernel data-structures a
370 little bigger and slows down execution a bit, but it is generally
371 a good idea to turn this on. If you're unsure, say Y.
374 tristate "/proc/pal support"
376 If you say Y here, you are able to get PAL (Processor Abstraction
377 Layer) information in /proc/pal. This contains useful information
378 about the processors in your systems, such as cache and TLB sizes
379 and the PAL firmware version in use.
381 To use this option, you have to ensure that the "/proc file system
382 support" (CONFIG_PROC_FS) is enabled, too.
384 config IA64_MC_ERR_INJECT
385 tristate "MC error injection support"
387 Adds support for MC error injection. If enabled, the kernel
388 will provide a sysfs interface for user applications to
389 call MC error injection PAL procedures to inject various errors.
390 This is a useful tool for MCA testing.
392 If you're unsure, do not select this option.
395 bool "ESI (Extensible SAL Interface) support"
397 If you say Y here, support is built into the kernel to
398 make ESI calls. ESI calls are used to support vendor-specific
399 firmware extensions, such as the ability to inject memory-errors
400 for test-purposes. If you're unsure, say N.
402 config IA64_HP_AML_NFW
403 bool "Support ACPI AML calls to native firmware"
405 This driver installs a global ACPI Operation Region handler for
406 region 0xA1. AML methods can use this OpRegion to call arbitrary
407 native firmware functions. The driver installs the OpRegion
408 handler if there is an HPQ5001 device or if the user supplies
409 the "force" module parameter, e.g., with the "aml_nfw.force"
410 kernel command line option.
413 bool "kexec system call"
414 depends on !SMP || HOTPLUG_CPU
417 kexec is a system call that implements the ability to shutdown your
418 current kernel, and to start another kernel. It is like a reboot
419 but it is independent of the system firmware. And like a reboot
420 you can start any kernel with it, not just Linux.
422 The name comes from the similarity to the exec system call.
424 It is an ongoing process to be certain the hardware in a machine
425 is properly shutdown, so do not be surprised if this code does not
426 initially work for you. As of this writing the exact hardware
427 interface is strongly in flux, so no good recommendation can be
431 bool "kernel crash dumps"
432 depends on IA64_MCA_RECOVERY && (!SMP || HOTPLUG_CPU)
434 Generate crash dump after being started by kexec.
436 source "drivers/firmware/Kconfig"
440 menu "Power management and ACPI options"
442 source "kernel/power/Kconfig"
444 source "drivers/acpi/Kconfig"
447 menu "CPU Frequency scaling"
448 source "drivers/cpufreq/Kconfig"
455 tristate "Memory special operations driver"
457 select IA64_UNCACHED_ALLOCATOR
459 If you have an ia64 and you want to enable memory special
460 operations support (formerly known as fetchop), say Y here,