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_ENABLE_MEMORY_HOTPLUG
17 select ARCH_ENABLE_MEMORY_HOTREMOVE
18 select ARCH_SUPPORTS_ACPI
19 select ACPI_SYSTEM_POWER_STATES_SUPPORT if ACPI
20 select ARCH_MIGHT_HAVE_ACPI_PDC if ACPI
22 select PCI_DOMAINS if PCI
24 select PCI_SYSCALL if PCI
25 select HAVE_ASM_MODVERSIONS
26 select HAVE_UNSTABLE_SCHED_CLOCK
27 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
37 select HUGETLB_PAGE_SIZE_VARIABLE if HUGETLB_PAGE
39 select GENERIC_IRQ_PROBE
40 select GENERIC_PENDING_IRQ if SMP
41 select GENERIC_IRQ_SHOW
42 select GENERIC_IRQ_LEGACY
43 select ARCH_HAVE_NMI_SAFE_CMPXCHG
45 select GENERIC_SMP_IDLE_THREAD
46 select ARCH_TASK_STRUCT_ON_STACK
47 select ARCH_TASK_STRUCT_ALLOCATOR
48 select ARCH_THREAD_STACK_ALLOCATOR
49 select ARCH_CLOCKSOURCE_DATA
50 select GENERIC_TIME_VSYSCALL
51 select LEGACY_TIMER_TICK
53 select SYSCTL_ARCH_UNALIGN_NO_WARN
54 select HAVE_MOD_ARCH_SPECIFIC
55 select MODULES_USE_ELF_RELA
56 select ARCH_USE_CMPXCHG_LOCKREF
57 select HAVE_ARCH_AUDITSYSCALL
58 select NEED_DMA_MAP_STATE
59 select NEED_SG_DMA_LENGTH
60 select NUMA if !FLATMEM
61 select PCI_MSI_ARCH_FALLBACKS if PCI_MSI
66 The Itanium Processor Family is Intel's 64-bit successor to
67 the 32-bit X86 line. The IA-64 Linux project has a home
68 page at <http://www.linuxia64.org/> and a mailing list at
69 <linux-ia64@vger.kernel.org>.
73 select ATA_NONSTANDARD if ATA
80 config STACKTRACE_SUPPORT
83 config GENERIC_LOCKBREAK
86 config GENERIC_CALIBRATE_DELAY
90 config HAVE_SETUP_PER_CPU_AREA
96 select DMI_SCAN_MACHINE_NON_EFI_FALLBACK
103 config SCHED_OMIT_FRAME_POINTER
107 config IA64_UNCACHED_ALLOCATOR
109 select GENERIC_ALLOCATOR
111 config ARCH_USES_PG_UNCACHED
113 depends on IA64_UNCACHED_ALLOCATOR
120 prompt "Processor type"
126 Select your IA-64 processor type. The default is Itanium.
127 This choice is safe for all IA-64 systems, but may not perform
128 optimally on systems with, say, Itanium 2 or newer processors.
133 Select this to configure for an Itanium 2 (McKinley) processor.
138 prompt "Kernel page size"
139 default IA64_PAGE_SIZE_16KB
141 config IA64_PAGE_SIZE_4KB
144 This lets you select the page size of the kernel. For best IA-64
145 performance, a page size of 8KB or 16KB is recommended. For best
146 IA-32 compatibility, a page size of 4KB should be selected (the vast
147 majority of IA-32 binaries work perfectly fine with a larger page
148 size). For Itanium 2 or newer systems, a page size of 64KB can also
151 4KB For best IA-32 compatibility
152 8KB For best IA-64 performance
153 16KB For best IA-64 performance
154 64KB Requires Itanium 2 or newer processor.
156 If you don't know what to do, choose 16KB.
158 config IA64_PAGE_SIZE_8KB
161 config IA64_PAGE_SIZE_16KB
164 config IA64_PAGE_SIZE_64KB
170 source "kernel/Kconfig.hz"
177 # align cache-sensitive data to 128 bytes
178 config IA64_L1_CACHE_SHIFT
180 default "7" if MCKINLEY
181 default "6" if ITANIUM
184 bool "SGI-UV support"
186 Selecting this option will add specific support for running on SGI
187 UV based systems. If you have an SGI UV system or are building a
188 distro kernel, select this option.
190 config IA64_HP_SBA_IOMMU
191 bool "HP SBA IOMMU support"
195 Say Y here to add support for the SBA IOMMU found on HP zx1 and
196 sx1000 systems. If you're unsure, answer Y.
199 bool "Cyclone (EXA) Time Source support"
201 Say Y here to enable support for IBM EXA Cyclone time source.
202 If you're unsure, answer N.
204 config FORCE_MAX_ZONEORDER
205 int "MAX_ORDER (11 - 17)" if !HUGETLB_PAGE
206 range 11 17 if !HUGETLB_PAGE
207 default "17" if HUGETLB_PAGE
211 bool "Symmetric multi-processing support"
213 This enables support for systems with more than one CPU. If you have
214 a system with only one CPU, say N. If you have a system with more
217 If you say N here, the kernel will run on single and multiprocessor
218 systems, but will use only one CPU of a multiprocessor system. If
219 you say Y here, the kernel will run on many, but not all,
220 single processor systems. On a single processor system, the kernel
221 will run faster if you say N here.
223 See also the SMP-HOWTO available at
224 <http://www.tldp.org/docs.html#howto>.
226 If you don't know what to do here, say N.
229 int "Maximum number of CPUs (2-4096)"
234 You should set this to the number of CPUs in your system, but
235 keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
236 only use 2 CPUs on a >2 CPU system. Setting this to a value larger
237 than 64 will cause the use of a CPU mask array, causing a small
241 bool "Support for hot-pluggable CPUs"
245 Say Y here to experiment with turning CPUs off and on. CPUs
246 can be controlled through /sys/devices/system/cpu/cpu#.
247 Say N if you want to disable CPU hotplug.
250 bool "SMT scheduler support"
253 Improves the CPU scheduler's decision making when dealing with
254 Intel IA64 chips with MultiThreading at a cost of slightly increased
255 overhead in some places. If unsure say N here.
257 config PERMIT_BSP_REMOVE
258 bool "Support removal of Bootstrap Processor"
259 depends on HOTPLUG_CPU
262 Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
265 config FORCE_CPEI_RETARGET
266 bool "Force assumption that CPEI can be re-targeted"
267 depends on PERMIT_BSP_REMOVE
270 Say Y if you need to force the assumption that CPEI can be re-targeted to
271 any cpu in the system. This hint is available via ACPI 3.0 specifications.
272 Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
273 This option it useful to enable this feature on older BIOS's as well.
274 You can also enable this by using boot command line option force_cpei=1.
276 config ARCH_SELECT_MEMORY_MODEL
279 config ARCH_FLATMEM_ENABLE
282 config ARCH_SPARSEMEM_ENABLE
284 select SPARSEMEM_VMEMMAP_ENABLE
286 config ARCH_SPARSEMEM_DEFAULT
288 depends on ARCH_SPARSEMEM_ENABLE
295 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
296 Access). This option is for configuring high-end multiprocessor
297 server systems. If in doubt, say N.
300 int "Max num nodes shift(3-10)"
305 This option specifies the maximum number of nodes in your SSI system.
306 MAX_NUMNODES will be 2^(This value).
307 If in doubt, use the default.
309 config HAVE_ARCH_NODEDATA_EXTENSION
313 config USE_PERCPU_NUMA_NODE_ID
317 config HAVE_MEMORYLESS_NODES
320 config ARCH_PROC_KCORE_TEXT
322 depends on PROC_KCORE
324 config IA64_MCA_RECOVERY
325 tristate "MCA recovery from errors other than TLB."
328 tristate "/proc/pal support"
330 If you say Y here, you are able to get PAL (Processor Abstraction
331 Layer) information in /proc/pal. This contains useful information
332 about the processors in your systems, such as cache and TLB sizes
333 and the PAL firmware version in use.
335 To use this option, you have to ensure that the "/proc file system
336 support" (CONFIG_PROC_FS) is enabled, too.
338 config IA64_MC_ERR_INJECT
339 tristate "MC error injection support"
341 Adds support for MC error injection. If enabled, the kernel
342 will provide a sysfs interface for user applications to
343 call MC error injection PAL procedures to inject various errors.
344 This is a useful tool for MCA testing.
346 If you're unsure, do not select this option.
349 bool "ESI (Extensible SAL Interface) support"
351 If you say Y here, support is built into the kernel to
352 make ESI calls. ESI calls are used to support vendor-specific
353 firmware extensions, such as the ability to inject memory-errors
354 for test-purposes. If you're unsure, say N.
356 config IA64_HP_AML_NFW
357 bool "Support ACPI AML calls to native firmware"
359 This driver installs a global ACPI Operation Region handler for
360 region 0xA1. AML methods can use this OpRegion to call arbitrary
361 native firmware functions. The driver installs the OpRegion
362 handler if there is an HPQ5001 device or if the user supplies
363 the "force" module parameter, e.g., with the "aml_nfw.force"
364 kernel command line option.
367 bool "kexec system call"
368 depends on !SMP || HOTPLUG_CPU
371 kexec is a system call that implements the ability to shutdown your
372 current kernel, and to start another kernel. It is like a reboot
373 but it is independent of the system firmware. And like a reboot
374 you can start any kernel with it, not just Linux.
376 The name comes from the similarity to the exec system call.
378 It is an ongoing process to be certain the hardware in a machine
379 is properly shutdown, so do not be surprised if this code does not
380 initially work for you. As of this writing the exact hardware
381 interface is strongly in flux, so no good recommendation can be
385 bool "kernel crash dumps"
386 depends on IA64_MCA_RECOVERY && (!SMP || HOTPLUG_CPU)
388 Generate crash dump after being started by kexec.
390 source "drivers/firmware/Kconfig"
394 menu "Power management and ACPI options"
396 source "kernel/power/Kconfig"
398 source "drivers/acpi/Kconfig"
401 menu "CPU Frequency scaling"
402 source "drivers/cpufreq/Kconfig"
409 tristate "Memory special operations driver"
411 select IA64_UNCACHED_ALLOCATOR
413 If you have an ia64 and you want to enable memory special
414 operations support (formerly known as fetchop), say Y here,