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_HAS_DMA_MARK_CLEAN
12 select ARCH_MIGHT_HAVE_PC_PARPORT
13 select ARCH_MIGHT_HAVE_PC_SERIO
15 select ACPI_NUMA if NUMA
16 select ARCH_SUPPORTS_ACPI
17 select ACPI_SYSTEM_POWER_STATES_SUPPORT if ACPI
18 select ARCH_MIGHT_HAVE_ACPI_PDC if ACPI
20 select PCI_DOMAINS if PCI
22 select PCI_SYSCALL if PCI
23 select HAVE_ASM_MODVERSIONS
24 select HAVE_UNSTABLE_SCHED_CLOCK
25 select HAVE_EXIT_THREAD
29 select HAVE_KRETPROBES
30 select HAVE_FTRACE_MCOUNT_RECORD
31 select HAVE_DYNAMIC_FTRACE if (!ITANIUM)
32 select HAVE_FUNCTION_TRACER
34 select HAVE_ARCH_TRACEHOOK
35 select HAVE_VIRT_CPU_ACCOUNTING
37 select GENERIC_IRQ_PROBE
38 select GENERIC_PENDING_IRQ if SMP
39 select GENERIC_IRQ_SHOW
40 select GENERIC_IRQ_LEGACY
41 select ARCH_HAVE_NMI_SAFE_CMPXCHG
43 select GENERIC_SMP_IDLE_THREAD
44 select ARCH_TASK_STRUCT_ON_STACK
45 select ARCH_TASK_STRUCT_ALLOCATOR
46 select ARCH_THREAD_STACK_ALLOCATOR
47 select ARCH_CLOCKSOURCE_DATA
48 select GENERIC_TIME_VSYSCALL
50 select SYSCTL_ARCH_UNALIGN_NO_WARN
51 select HAVE_MOD_ARCH_SPECIFIC
52 select MODULES_USE_ELF_RELA
53 select ARCH_USE_CMPXCHG_LOCKREF
54 select HAVE_ARCH_AUDITSYSCALL
55 select NEED_DMA_MAP_STATE
56 select NEED_SG_DMA_LENGTH
57 select NUMA if !FLATMEM
58 select PCI_MSI_ARCH_FALLBACKS if PCI_MSI
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
64 <linux-ia64@vger.kernel.org>.
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"
198 Say Y here to add support for the SBA IOMMU found on HP zx1 and
199 sx1000 systems. If you're unsure, answer Y.
202 bool "Cyclone (EXA) Time Source support"
204 Say Y here to enable support for IBM EXA Cyclone time source.
205 If you're unsure, answer N.
207 config FORCE_MAX_ZONEORDER
208 int "MAX_ORDER (11 - 17)" if !HUGETLB_PAGE
209 range 11 17 if !HUGETLB_PAGE
210 default "17" if HUGETLB_PAGE
214 bool "Symmetric multi-processing support"
216 This enables support for systems with more than one CPU. If you have
217 a system with only one CPU, say N. If you have a system with more
220 If you say N here, the kernel will run on single and multiprocessor
221 systems, but will use only one CPU of a multiprocessor system. If
222 you say Y here, the kernel will run on many, but not all,
223 single processor systems. On a single processor system, the kernel
224 will run faster if you say N here.
226 See also the SMP-HOWTO available at
227 <http://www.tldp.org/docs.html#howto>.
229 If you don't know what to do here, say N.
232 int "Maximum number of CPUs (2-4096)"
237 You should set this to the number of CPUs in your system, but
238 keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
239 only use 2 CPUs on a >2 CPU system. Setting this to a value larger
240 than 64 will cause the use of a CPU mask array, causing a small
244 bool "Support for hot-pluggable CPUs"
248 Say Y here to experiment with turning CPUs off and on. CPUs
249 can be controlled through /sys/devices/system/cpu/cpu#.
250 Say N if you want to disable CPU hotplug.
252 config ARCH_ENABLE_MEMORY_HOTPLUG
255 config ARCH_ENABLE_MEMORY_HOTREMOVE
259 bool "SMT scheduler support"
262 Improves the CPU scheduler's decision making when dealing with
263 Intel IA64 chips with MultiThreading at a cost of slightly increased
264 overhead in some places. If unsure say N here.
266 config PERMIT_BSP_REMOVE
267 bool "Support removal of Bootstrap Processor"
268 depends on HOTPLUG_CPU
271 Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
274 config FORCE_CPEI_RETARGET
275 bool "Force assumption that CPEI can be re-targeted"
276 depends on PERMIT_BSP_REMOVE
279 Say Y if you need to force the assumption that CPEI can be re-targeted to
280 any cpu in the system. This hint is available via ACPI 3.0 specifications.
281 Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
282 This option it useful to enable this feature on older BIOS's as well.
283 You can also enable this by using boot command line option force_cpei=1.
285 config ARCH_SELECT_MEMORY_MODEL
288 config ARCH_DISCONTIGMEM_ENABLE
291 Say Y to support efficient handling of discontiguous physical memory,
292 for architectures which are either NUMA (Non-Uniform Memory Access)
293 or have huge holes in the physical address space for other reasons.
294 See <file:Documentation/vm/numa.rst> for more.
296 config ARCH_FLATMEM_ENABLE
299 config ARCH_SPARSEMEM_ENABLE
301 depends on ARCH_DISCONTIGMEM_ENABLE
302 select SPARSEMEM_VMEMMAP_ENABLE
304 config ARCH_DISCONTIGMEM_DEFAULT
306 depends on ARCH_DISCONTIGMEM_ENABLE
313 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
314 Access). This option is for configuring high-end multiprocessor
315 server systems. If in doubt, say N.
318 int "Max num nodes shift(3-10)"
321 depends on NEED_MULTIPLE_NODES
323 This option specifies the maximum number of nodes in your SSI system.
324 MAX_NUMNODES will be 2^(This value).
325 If in doubt, use the default.
327 # VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent.
328 # VIRTUAL_MEM_MAP has been retained for historical reasons.
329 config VIRTUAL_MEM_MAP
330 bool "Virtual mem map"
331 depends on !SPARSEMEM
334 Say Y to compile the kernel with support for a virtual mem map.
335 This code also only takes effect if a memory hole of greater than
336 1 Gb is found during boot. You must turn this option on if you
337 require the DISCONTIGMEM option for your machine. If you are
342 default y if VIRTUAL_MEM_MAP
344 config HAVE_ARCH_EARLY_PFN_TO_NID
345 def_bool NUMA && SPARSEMEM
347 config HAVE_ARCH_NODEDATA_EXTENSION
351 config USE_PERCPU_NUMA_NODE_ID
355 config HAVE_MEMORYLESS_NODES
358 config ARCH_PROC_KCORE_TEXT
360 depends on PROC_KCORE
362 config IA64_MCA_RECOVERY
363 tristate "MCA recovery from errors other than TLB."
366 tristate "/proc/pal support"
368 If you say Y here, you are able to get PAL (Processor Abstraction
369 Layer) information in /proc/pal. This contains useful information
370 about the processors in your systems, such as cache and TLB sizes
371 and the PAL firmware version in use.
373 To use this option, you have to ensure that the "/proc file system
374 support" (CONFIG_PROC_FS) is enabled, too.
376 config IA64_MC_ERR_INJECT
377 tristate "MC error injection support"
379 Adds support for MC error injection. If enabled, the kernel
380 will provide a sysfs interface for user applications to
381 call MC error injection PAL procedures to inject various errors.
382 This is a useful tool for MCA testing.
384 If you're unsure, do not select this option.
387 bool "ESI (Extensible SAL Interface) support"
389 If you say Y here, support is built into the kernel to
390 make ESI calls. ESI calls are used to support vendor-specific
391 firmware extensions, such as the ability to inject memory-errors
392 for test-purposes. If you're unsure, say N.
394 config IA64_HP_AML_NFW
395 bool "Support ACPI AML calls to native firmware"
397 This driver installs a global ACPI Operation Region handler for
398 region 0xA1. AML methods can use this OpRegion to call arbitrary
399 native firmware functions. The driver installs the OpRegion
400 handler if there is an HPQ5001 device or if the user supplies
401 the "force" module parameter, e.g., with the "aml_nfw.force"
402 kernel command line option.
405 bool "kexec system call"
406 depends on !SMP || HOTPLUG_CPU
409 kexec is a system call that implements the ability to shutdown your
410 current kernel, and to start another kernel. It is like a reboot
411 but it is independent of the system firmware. And like a reboot
412 you can start any kernel with it, not just Linux.
414 The name comes from the similarity to the exec system call.
416 It is an ongoing process to be certain the hardware in a machine
417 is properly shutdown, so do not be surprised if this code does not
418 initially work for you. As of this writing the exact hardware
419 interface is strongly in flux, so no good recommendation can be
423 bool "kernel crash dumps"
424 depends on IA64_MCA_RECOVERY && (!SMP || HOTPLUG_CPU)
426 Generate crash dump after being started by kexec.
428 source "drivers/firmware/Kconfig"
432 menu "Power management and ACPI options"
434 source "kernel/power/Kconfig"
436 source "drivers/acpi/Kconfig"
439 menu "CPU Frequency scaling"
440 source "drivers/cpufreq/Kconfig"
447 tristate "Memory special operations driver"
449 select IA64_UNCACHED_ALLOCATOR
451 If you have an ia64 and you want to enable memory special
452 operations support (formerly known as fetchop), say Y here,