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_BINFMT_ELF_EXTRA_PHDRS
12 select ARCH_HAS_CPU_FINALIZE_INIT
13 select ARCH_HAS_DMA_MARK_CLEAN
14 select ARCH_HAS_STRNCPY_FROM_USER
15 select ARCH_HAS_STRNLEN_USER
16 select ARCH_MIGHT_HAVE_PC_PARPORT
17 select ARCH_MIGHT_HAVE_PC_SERIO
19 select ACPI_NUMA if NUMA
20 select ARCH_ENABLE_MEMORY_HOTPLUG
21 select ARCH_ENABLE_MEMORY_HOTREMOVE
22 select ARCH_SUPPORTS_ACPI
23 select ACPI_SYSTEM_POWER_STATES_SUPPORT if ACPI
24 select ARCH_MIGHT_HAVE_ACPI_PDC if ACPI
26 select PCI_DOMAINS if PCI
28 select PCI_SYSCALL if PCI
30 select HAVE_ASM_MODVERSIONS
31 select HAVE_UNSTABLE_SCHED_CLOCK
32 select HAVE_EXIT_THREAD
34 select HAVE_KRETPROBES
35 select HAVE_FTRACE_MCOUNT_RECORD
36 select HAVE_DYNAMIC_FTRACE if (!ITANIUM)
37 select HAVE_FUNCTION_TRACER
38 select HAVE_SETUP_PER_CPU_AREA
40 select HAVE_ARCH_TRACEHOOK
41 select HAVE_FUNCTION_DESCRIPTORS
42 select HAVE_VIRT_CPU_ACCOUNTING
43 select HUGETLB_PAGE_SIZE_VARIABLE if HUGETLB_PAGE
44 select GENERIC_IRQ_PROBE
45 select GENERIC_PENDING_IRQ if SMP
46 select GENERIC_IRQ_SHOW
47 select GENERIC_IRQ_LEGACY
48 select ARCH_HAVE_NMI_SAFE_CMPXCHG
50 select GENERIC_IOREMAP
51 select GENERIC_SMP_IDLE_THREAD
52 select ARCH_TASK_STRUCT_ON_STACK
53 select ARCH_TASK_STRUCT_ALLOCATOR
54 select ARCH_THREAD_STACK_ALLOCATOR
55 select ARCH_CLOCKSOURCE_DATA
56 select GENERIC_TIME_VSYSCALL
57 select LEGACY_TIMER_TICK
59 select SYSCTL_ARCH_UNALIGN_NO_WARN
60 select HAVE_MOD_ARCH_SPECIFIC
61 select MODULES_USE_ELF_RELA
62 select ARCH_USE_CMPXCHG_LOCKREF
63 select HAVE_ARCH_AUDITSYSCALL
64 select NEED_DMA_MAP_STATE
65 select NEED_SG_DMA_LENGTH
66 select NUMA if !FLATMEM
67 select PCI_MSI_ARCH_FALLBACKS if PCI_MSI
69 select FUNCTION_ALIGNMENT_32B
72 The Itanium Processor Family is Intel's 64-bit successor to
73 the 32-bit X86 line. The IA-64 Linux project has a home
74 page at <http://www.linuxia64.org/> and a mailing list at
75 <linux-ia64@vger.kernel.org>.
79 select ATA_NONSTANDARD if ATA
86 config STACKTRACE_SUPPORT
89 config GENERIC_LOCKBREAK
92 config GENERIC_CALIBRATE_DELAY
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 ARCH_FORCE_MAX_ORDER
209 default "16" 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.
252 bool "SMT scheduler support"
255 Improves the CPU scheduler's decision making when dealing with
256 Intel IA64 chips with MultiThreading at a cost of slightly increased
257 overhead in some places. If unsure say N here.
259 config PERMIT_BSP_REMOVE
260 bool "Support removal of Bootstrap Processor"
261 depends on HOTPLUG_CPU
264 Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
267 config FORCE_CPEI_RETARGET
268 bool "Force assumption that CPEI can be re-targeted"
269 depends on PERMIT_BSP_REMOVE
272 Say Y if you need to force the assumption that CPEI can be re-targeted to
273 any cpu in the system. This hint is available via ACPI 3.0 specifications.
274 Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
275 This option it useful to enable this feature on older BIOS's as well.
276 You can also enable this by using boot command line option force_cpei=1.
278 config ARCH_SELECT_MEMORY_MODEL
281 config ARCH_FLATMEM_ENABLE
284 config ARCH_SPARSEMEM_ENABLE
286 select SPARSEMEM_VMEMMAP_ENABLE
288 config ARCH_SPARSEMEM_DEFAULT
290 depends on ARCH_SPARSEMEM_ENABLE
296 select USE_PERCPU_NUMA_NODE_ID
298 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
299 Access). This option is for configuring high-end multiprocessor
300 server systems. If in doubt, say N.
303 int "Max num nodes shift(3-10)"
308 This option specifies the maximum number of nodes in your SSI system.
309 MAX_NUMNODES will be 2^(This value).
310 If in doubt, use the default.
312 config HAVE_ARCH_NODEDATA_EXTENSION
316 config HAVE_MEMORYLESS_NODES
319 config ARCH_PROC_KCORE_TEXT
321 depends on PROC_KCORE
323 config IA64_MCA_RECOVERY
324 bool "MCA recovery from errors other than TLB."
327 tristate "/proc/pal support"
329 If you say Y here, you are able to get PAL (Processor Abstraction
330 Layer) information in /proc/pal. This contains useful information
331 about the processors in your systems, such as cache and TLB sizes
332 and the PAL firmware version in use.
334 To use this option, you have to ensure that the "/proc file system
335 support" (CONFIG_PROC_FS) is enabled, too.
337 config IA64_MC_ERR_INJECT
338 tristate "MC error injection support"
340 Adds support for MC error injection. If enabled, the kernel
341 will provide a sysfs interface for user applications to
342 call MC error injection PAL procedures to inject various errors.
343 This is a useful tool for MCA testing.
345 If you're unsure, do not select this option.
348 bool "ESI (Extensible SAL Interface) support"
350 If you say Y here, support is built into the kernel to
351 make ESI calls. ESI calls are used to support vendor-specific
352 firmware extensions, such as the ability to inject memory-errors
353 for test-purposes. If you're unsure, say N.
355 config IA64_HP_AML_NFW
356 bool "Support ACPI AML calls to native firmware"
358 This driver installs a global ACPI Operation Region handler for
359 region 0xA1. AML methods can use this OpRegion to call arbitrary
360 native firmware functions. The driver installs the OpRegion
361 handler if there is an HPQ5001 device or if the user supplies
362 the "force" module parameter, e.g., with the "aml_nfw.force"
363 kernel command line option.
367 config ARCH_SUPPORTS_KEXEC
368 def_bool !SMP || HOTPLUG_CPU
370 config ARCH_SUPPORTS_CRASH_DUMP
371 def_bool IA64_MCA_RECOVERY && (!SMP || HOTPLUG_CPU)
373 menu "Power management and ACPI options"
375 source "kernel/power/Kconfig"
377 source "drivers/acpi/Kconfig"
380 menu "CPU Frequency scaling"
381 source "drivers/cpufreq/Kconfig"
388 tristate "Memory special operations driver"
390 select IA64_UNCACHED_ALLOCATOR
392 If you have an ia64 and you want to enable memory special
393 operations support (formerly known as fetchop), say Y here,