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_CPU_FINALIZE_INIT
12 select ARCH_HAS_DMA_MARK_CLEAN
13 select ARCH_MIGHT_HAVE_PC_PARPORT
14 select ARCH_MIGHT_HAVE_PC_SERIO
16 select ACPI_NUMA if NUMA
17 select ARCH_SUPPORTS_ACPI
18 select ACPI_SYSTEM_POWER_STATES_SUPPORT if ACPI
19 select ARCH_MIGHT_HAVE_ACPI_PDC if ACPI
21 select PCI_DOMAINS if PCI
23 select PCI_SYSCALL if PCI
24 select HAVE_ASM_MODVERSIONS
25 select HAVE_UNSTABLE_SCHED_CLOCK
26 select HAVE_EXIT_THREAD
30 select HAVE_KRETPROBES
31 select HAVE_FTRACE_MCOUNT_RECORD
32 select HAVE_DYNAMIC_FTRACE if (!ITANIUM)
33 select HAVE_FUNCTION_TRACER
35 select HAVE_ARCH_TRACEHOOK
36 select HAVE_VIRT_CPU_ACCOUNTING
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
59 select PCI_MSI_ARCH_FALLBACKS if PCI_MSI
63 The Itanium Processor Family is Intel's 64-bit successor to
64 the 32-bit X86 line. The IA-64 Linux project has a home
65 page at <http://www.linuxia64.org/> and a mailing list at
66 <linux-ia64@vger.kernel.org>.
70 select ATA_NONSTANDARD if ATA
80 config STACKTRACE_SUPPORT
83 config GENERIC_LOCKBREAK
86 config HUGETLB_PAGE_SIZE_VARIABLE
88 depends on HUGETLB_PAGE
91 config GENERIC_CALIBRATE_DELAY
95 config HAVE_SETUP_PER_CPU_AREA
101 select DMI_SCAN_MACHINE_NON_EFI_FALLBACK
108 config SCHED_OMIT_FRAME_POINTER
112 config IA64_UNCACHED_ALLOCATOR
114 select GENERIC_ALLOCATOR
116 config ARCH_USES_PG_UNCACHED
118 depends on IA64_UNCACHED_ALLOCATOR
125 prompt "Processor type"
131 Select your IA-64 processor type. The default is Itanium.
132 This choice is safe for all IA-64 systems, but may not perform
133 optimally on systems with, say, Itanium 2 or newer processors.
138 Select this to configure for an Itanium 2 (McKinley) processor.
143 prompt "Kernel page size"
144 default IA64_PAGE_SIZE_16KB
146 config IA64_PAGE_SIZE_4KB
149 This lets you select the page size of the kernel. For best IA-64
150 performance, a page size of 8KB or 16KB is recommended. For best
151 IA-32 compatibility, a page size of 4KB should be selected (the vast
152 majority of IA-32 binaries work perfectly fine with a larger page
153 size). For Itanium 2 or newer systems, a page size of 64KB can also
156 4KB For best IA-32 compatibility
157 8KB For best IA-64 performance
158 16KB For best IA-64 performance
159 64KB Requires Itanium 2 or newer processor.
161 If you don't know what to do, choose 16KB.
163 config IA64_PAGE_SIZE_8KB
166 config IA64_PAGE_SIZE_16KB
169 config IA64_PAGE_SIZE_64KB
175 source "kernel/Kconfig.hz"
182 # align cache-sensitive data to 128 bytes
183 config IA64_L1_CACHE_SHIFT
185 default "7" if MCKINLEY
186 default "6" if ITANIUM
189 bool "SGI-UV support"
191 Selecting this option will add specific support for running on SGI
192 UV based systems. If you have an SGI UV system or are building a
193 distro kernel, select this option.
195 config IA64_HP_SBA_IOMMU
196 bool "HP SBA IOMMU support"
200 Say Y here to add support for the SBA IOMMU found on HP zx1 and
201 sx1000 systems. If you're unsure, answer Y.
204 bool "Cyclone (EXA) Time Source support"
206 Say Y here to enable support for IBM EXA Cyclone time source.
207 If you're unsure, answer N.
209 config FORCE_MAX_ZONEORDER
210 int "MAX_ORDER (11 - 17)" if !HUGETLB_PAGE
211 range 11 17 if !HUGETLB_PAGE
212 default "17" if HUGETLB_PAGE
216 bool "Symmetric multi-processing support"
218 This enables support for systems with more than one CPU. If you have
219 a system with only one CPU, say N. If you have a system with more
222 If you say N here, the kernel will run on single and multiprocessor
223 systems, but will use only one CPU of a multiprocessor system. If
224 you say Y here, the kernel will run on many, but not all,
225 single processor systems. On a single processor system, the kernel
226 will run faster if you say N here.
228 See also the SMP-HOWTO available at
229 <http://www.tldp.org/docs.html#howto>.
231 If you don't know what to do here, say N.
234 int "Maximum number of CPUs (2-4096)"
239 You should set this to the number of CPUs in your system, but
240 keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
241 only use 2 CPUs on a >2 CPU system. Setting this to a value larger
242 than 64 will cause the use of a CPU mask array, causing a small
246 bool "Support for hot-pluggable CPUs"
250 Say Y here to experiment with turning CPUs off and on. CPUs
251 can be controlled through /sys/devices/system/cpu/cpu#.
252 Say N if you want to disable CPU hotplug.
254 config ARCH_ENABLE_MEMORY_HOTPLUG
257 config ARCH_ENABLE_MEMORY_HOTREMOVE
261 bool "SMT scheduler support"
264 Improves the CPU scheduler's decision making when dealing with
265 Intel IA64 chips with MultiThreading at a cost of slightly increased
266 overhead in some places. If unsure say N here.
268 config PERMIT_BSP_REMOVE
269 bool "Support removal of Bootstrap Processor"
270 depends on HOTPLUG_CPU
273 Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
276 config FORCE_CPEI_RETARGET
277 bool "Force assumption that CPEI can be re-targeted"
278 depends on PERMIT_BSP_REMOVE
281 Say Y if you need to force the assumption that CPEI can be re-targeted to
282 any cpu in the system. This hint is available via ACPI 3.0 specifications.
283 Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
284 This option it useful to enable this feature on older BIOS's as well.
285 You can also enable this by using boot command line option force_cpei=1.
287 config ARCH_SELECT_MEMORY_MODEL
290 config ARCH_DISCONTIGMEM_ENABLE
293 Say Y to support efficient handling of discontiguous physical memory,
294 for architectures which are either NUMA (Non-Uniform Memory Access)
295 or have huge holes in the physical address space for other reasons.
296 See <file:Documentation/vm/numa.rst> for more.
298 config ARCH_FLATMEM_ENABLE
301 config ARCH_SPARSEMEM_ENABLE
303 depends on ARCH_DISCONTIGMEM_ENABLE
304 select SPARSEMEM_VMEMMAP_ENABLE
306 config ARCH_DISCONTIGMEM_DEFAULT
308 depends on ARCH_DISCONTIGMEM_ENABLE
315 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
316 Access). This option is for configuring high-end multiprocessor
317 server systems. If in doubt, say N.
320 int "Max num nodes shift(3-10)"
323 depends on NEED_MULTIPLE_NODES
325 This option specifies the maximum number of nodes in your SSI system.
326 MAX_NUMNODES will be 2^(This value).
327 If in doubt, use the default.
329 # VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent.
330 # VIRTUAL_MEM_MAP has been retained for historical reasons.
331 config VIRTUAL_MEM_MAP
332 bool "Virtual mem map"
333 depends on !SPARSEMEM
336 Say Y to compile the kernel with support for a virtual mem map.
337 This code also only takes effect if a memory hole of greater than
338 1 Gb is found during boot. You must turn this option on if you
339 require the DISCONTIGMEM option for your machine. If you are
344 default y if VIRTUAL_MEM_MAP
346 config HAVE_ARCH_EARLY_PFN_TO_NID
347 def_bool NUMA && SPARSEMEM
349 config HAVE_ARCH_NODEDATA_EXTENSION
353 config USE_PERCPU_NUMA_NODE_ID
357 config HAVE_MEMORYLESS_NODES
360 config ARCH_PROC_KCORE_TEXT
362 depends on PROC_KCORE
364 config IA64_MCA_RECOVERY
365 bool "MCA recovery from errors other than TLB."
368 tristate "/proc/pal support"
370 If you say Y here, you are able to get PAL (Processor Abstraction
371 Layer) information in /proc/pal. This contains useful information
372 about the processors in your systems, such as cache and TLB sizes
373 and the PAL firmware version in use.
375 To use this option, you have to ensure that the "/proc file system
376 support" (CONFIG_PROC_FS) is enabled, too.
378 config IA64_MC_ERR_INJECT
379 tristate "MC error injection support"
381 Adds support for MC error injection. If enabled, the kernel
382 will provide a sysfs interface for user applications to
383 call MC error injection PAL procedures to inject various errors.
384 This is a useful tool for MCA testing.
386 If you're unsure, do not select this option.
389 bool "ESI (Extensible SAL Interface) support"
391 If you say Y here, support is built into the kernel to
392 make ESI calls. ESI calls are used to support vendor-specific
393 firmware extensions, such as the ability to inject memory-errors
394 for test-purposes. If you're unsure, say N.
396 config IA64_HP_AML_NFW
397 bool "Support ACPI AML calls to native firmware"
399 This driver installs a global ACPI Operation Region handler for
400 region 0xA1. AML methods can use this OpRegion to call arbitrary
401 native firmware functions. The driver installs the OpRegion
402 handler if there is an HPQ5001 device or if the user supplies
403 the "force" module parameter, e.g., with the "aml_nfw.force"
404 kernel command line option.
407 bool "kexec system call"
408 depends on !SMP || HOTPLUG_CPU
411 kexec is a system call that implements the ability to shutdown your
412 current kernel, and to start another kernel. It is like a reboot
413 but it is independent of the system firmware. And like a reboot
414 you can start any kernel with it, not just Linux.
416 The name comes from the similarity to the exec system call.
418 It is an ongoing process to be certain the hardware in a machine
419 is properly shutdown, so do not be surprised if this code does not
420 initially work for you. As of this writing the exact hardware
421 interface is strongly in flux, so no good recommendation can be
425 bool "kernel crash dumps"
426 depends on IA64_MCA_RECOVERY && (!SMP || HOTPLUG_CPU)
428 Generate crash dump after being started by kexec.
430 source "drivers/firmware/Kconfig"
434 menu "Power management and ACPI options"
436 source "kernel/power/Kconfig"
438 source "drivers/acpi/Kconfig"
441 menu "CPU Frequency scaling"
442 source "drivers/cpufreq/Kconfig"
449 tristate "Memory special operations driver"
451 select IA64_UNCACHED_ALLOCATOR
453 If you have an ia64 and you want to enable memory special
454 operations support (formerly known as fetchop), say Y here,