Current File : //proc/thread-self/root/usr/src/linux-headers-5.15.0-43/arch/ia64/Kconfig
# SPDX-License-Identifier: GPL-2.0
config PGTABLE_LEVELS
int "Page Table Levels" if !IA64_PAGE_SIZE_64KB
range 3 4 if !IA64_PAGE_SIZE_64KB
default 3
menu "Processor type and features"
config IA64
bool
select ARCH_HAS_DMA_MARK_CLEAN
select ARCH_HAS_STRNCPY_FROM_USER
select ARCH_HAS_STRNLEN_USER
select ARCH_MIGHT_HAVE_PC_PARPORT
select ARCH_MIGHT_HAVE_PC_SERIO
select ACPI
select ACPI_NUMA if NUMA
select ARCH_ENABLE_MEMORY_HOTPLUG
select ARCH_ENABLE_MEMORY_HOTREMOVE
select ARCH_SUPPORTS_ACPI
select ACPI_SYSTEM_POWER_STATES_SUPPORT if ACPI
select ARCH_MIGHT_HAVE_ACPI_PDC if ACPI
select FORCE_PCI
select PCI_DOMAINS if PCI
select PCI_MSI
select PCI_SYSCALL if PCI
select HAVE_ASM_MODVERSIONS
select HAVE_UNSTABLE_SCHED_CLOCK
select HAVE_EXIT_THREAD
select HAVE_KPROBES
select HAVE_KRETPROBES
select HAVE_FTRACE_MCOUNT_RECORD
select HAVE_DYNAMIC_FTRACE if (!ITANIUM)
select HAVE_FUNCTION_TRACER
select TTY
select HAVE_ARCH_TRACEHOOK
select HAVE_VIRT_CPU_ACCOUNTING
select HUGETLB_PAGE_SIZE_VARIABLE if HUGETLB_PAGE
select VIRT_TO_BUS
select GENERIC_IRQ_PROBE
select GENERIC_PENDING_IRQ if SMP
select GENERIC_IRQ_SHOW
select GENERIC_IRQ_LEGACY
select ARCH_HAVE_NMI_SAFE_CMPXCHG
select GENERIC_IOMAP
select GENERIC_SMP_IDLE_THREAD
select ARCH_TASK_STRUCT_ON_STACK
select ARCH_TASK_STRUCT_ALLOCATOR
select ARCH_THREAD_STACK_ALLOCATOR
select ARCH_CLOCKSOURCE_DATA
select GENERIC_TIME_VSYSCALL
select LEGACY_TIMER_TICK
select SWIOTLB
select SYSCTL_ARCH_UNALIGN_NO_WARN
select HAVE_MOD_ARCH_SPECIFIC
select MODULES_USE_ELF_RELA
select ARCH_USE_CMPXCHG_LOCKREF
select HAVE_ARCH_AUDITSYSCALL
select NEED_DMA_MAP_STATE
select NEED_SG_DMA_LENGTH
select NUMA if !FLATMEM
select PCI_MSI_ARCH_FALLBACKS if PCI_MSI
select SET_FS
select ZONE_DMA32
default y
help
The Itanium Processor Family is Intel's 64-bit successor to
the 32-bit X86 line. The IA-64 Linux project has a home
page at <http://www.linuxia64.org/> and a mailing list at
<linux-ia64@vger.kernel.org>.
config 64BIT
bool
select ATA_NONSTANDARD if ATA
default y
config MMU
bool
default y
config STACKTRACE_SUPPORT
def_bool y
config GENERIC_LOCKBREAK
def_bool n
config GENERIC_CALIBRATE_DELAY
bool
default y
config HAVE_SETUP_PER_CPU_AREA
def_bool y
config DMI
bool
default y
select DMI_SCAN_MACHINE_NON_EFI_FALLBACK
config EFI
bool
select UCS2_STRING
default y
config SCHED_OMIT_FRAME_POINTER
bool
default y
config IA64_UNCACHED_ALLOCATOR
bool
select GENERIC_ALLOCATOR
config ARCH_USES_PG_UNCACHED
def_bool y
depends on IA64_UNCACHED_ALLOCATOR
config AUDIT_ARCH
bool
default y
choice
prompt "Processor type"
default ITANIUM
config ITANIUM
bool "Itanium"
help
Select your IA-64 processor type. The default is Itanium.
This choice is safe for all IA-64 systems, but may not perform
optimally on systems with, say, Itanium 2 or newer processors.
config MCKINLEY
bool "Itanium 2"
help
Select this to configure for an Itanium 2 (McKinley) processor.
endchoice
choice
prompt "Kernel page size"
default IA64_PAGE_SIZE_16KB
config IA64_PAGE_SIZE_4KB
bool "4KB"
help
This lets you select the page size of the kernel. For best IA-64
performance, a page size of 8KB or 16KB is recommended. For best
IA-32 compatibility, a page size of 4KB should be selected (the vast
majority of IA-32 binaries work perfectly fine with a larger page
size). For Itanium 2 or newer systems, a page size of 64KB can also
be selected.
4KB For best IA-32 compatibility
8KB For best IA-64 performance
16KB For best IA-64 performance
64KB Requires Itanium 2 or newer processor.
If you don't know what to do, choose 16KB.
config IA64_PAGE_SIZE_8KB
bool "8KB"
config IA64_PAGE_SIZE_16KB
bool "16KB"
config IA64_PAGE_SIZE_64KB
depends on !ITANIUM
bool "64KB"
endchoice
source "kernel/Kconfig.hz"
config IA64_BRL_EMU
bool
depends on ITANIUM
default y
# align cache-sensitive data to 128 bytes
config IA64_L1_CACHE_SHIFT
int
default "7" if MCKINLEY
default "6" if ITANIUM
config IA64_SGI_UV
bool "SGI-UV support"
help
Selecting this option will add specific support for running on SGI
UV based systems. If you have an SGI UV system or are building a
distro kernel, select this option.
config IA64_HP_SBA_IOMMU
bool "HP SBA IOMMU support"
select DMA_OPS
default y
help
Say Y here to add support for the SBA IOMMU found on HP zx1 and
sx1000 systems. If you're unsure, answer Y.
config IA64_CYCLONE
bool "Cyclone (EXA) Time Source support"
help
Say Y here to enable support for IBM EXA Cyclone time source.
If you're unsure, answer N.
config FORCE_MAX_ZONEORDER
int "MAX_ORDER (11 - 17)" if !HUGETLB_PAGE
range 11 17 if !HUGETLB_PAGE
default "17" if HUGETLB_PAGE
default "11"
config SMP
bool "Symmetric multi-processing support"
help
This enables support for systems with more than one CPU. If you have
a system with only one CPU, say N. If you have a system with more
than one CPU, say Y.
If you say N here, the kernel will run on single and multiprocessor
systems, but will use only one CPU of a multiprocessor system. If
you say Y here, the kernel will run on many, but not all,
single processor systems. On a single processor system, the kernel
will run faster if you say N here.
See also the SMP-HOWTO available at
<http://www.tldp.org/docs.html#howto>.
If you don't know what to do here, say N.
config NR_CPUS
int "Maximum number of CPUs (2-4096)"
range 2 4096
depends on SMP
default "4096"
help
You should set this to the number of CPUs in your system, but
keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
only use 2 CPUs on a >2 CPU system. Setting this to a value larger
than 64 will cause the use of a CPU mask array, causing a small
performance hit.
config HOTPLUG_CPU
bool "Support for hot-pluggable CPUs"
depends on SMP
default n
help
Say Y here to experiment with turning CPUs off and on. CPUs
can be controlled through /sys/devices/system/cpu/cpu#.
Say N if you want to disable CPU hotplug.
config SCHED_SMT
bool "SMT scheduler support"
depends on SMP
help
Improves the CPU scheduler's decision making when dealing with
Intel IA64 chips with MultiThreading at a cost of slightly increased
overhead in some places. If unsure say N here.
config PERMIT_BSP_REMOVE
bool "Support removal of Bootstrap Processor"
depends on HOTPLUG_CPU
default n
help
Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
support.
config FORCE_CPEI_RETARGET
bool "Force assumption that CPEI can be re-targeted"
depends on PERMIT_BSP_REMOVE
default n
help
Say Y if you need to force the assumption that CPEI can be re-targeted to
any cpu in the system. This hint is available via ACPI 3.0 specifications.
Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
This option it useful to enable this feature on older BIOS's as well.
You can also enable this by using boot command line option force_cpei=1.
config ARCH_SELECT_MEMORY_MODEL
def_bool y
config ARCH_FLATMEM_ENABLE
def_bool y
config ARCH_SPARSEMEM_ENABLE
def_bool y
select SPARSEMEM_VMEMMAP_ENABLE
config ARCH_SPARSEMEM_DEFAULT
def_bool y
depends on ARCH_SPARSEMEM_ENABLE
config NUMA
bool "NUMA support"
depends on !FLATMEM
select SMP
help
Say Y to compile the kernel to support NUMA (Non-Uniform Memory
Access). This option is for configuring high-end multiprocessor
server systems. If in doubt, say N.
config NODES_SHIFT
int "Max num nodes shift(3-10)"
range 3 10
default "10"
depends on NUMA
help
This option specifies the maximum number of nodes in your SSI system.
MAX_NUMNODES will be 2^(This value).
If in doubt, use the default.
config HAVE_ARCH_NODEDATA_EXTENSION
def_bool y
depends on NUMA
config USE_PERCPU_NUMA_NODE_ID
def_bool y
depends on NUMA
config HAVE_MEMORYLESS_NODES
def_bool NUMA
config ARCH_PROC_KCORE_TEXT
def_bool y
depends on PROC_KCORE
config IA64_MCA_RECOVERY
tristate "MCA recovery from errors other than TLB."
config IA64_PALINFO
tristate "/proc/pal support"
help
If you say Y here, you are able to get PAL (Processor Abstraction
Layer) information in /proc/pal. This contains useful information
about the processors in your systems, such as cache and TLB sizes
and the PAL firmware version in use.
To use this option, you have to ensure that the "/proc file system
support" (CONFIG_PROC_FS) is enabled, too.
config IA64_MC_ERR_INJECT
tristate "MC error injection support"
help
Adds support for MC error injection. If enabled, the kernel
will provide a sysfs interface for user applications to
call MC error injection PAL procedures to inject various errors.
This is a useful tool for MCA testing.
If you're unsure, do not select this option.
config IA64_ESI
bool "ESI (Extensible SAL Interface) support"
help
If you say Y here, support is built into the kernel to
make ESI calls. ESI calls are used to support vendor-specific
firmware extensions, such as the ability to inject memory-errors
for test-purposes. If you're unsure, say N.
config IA64_HP_AML_NFW
bool "Support ACPI AML calls to native firmware"
help
This driver installs a global ACPI Operation Region handler for
region 0xA1. AML methods can use this OpRegion to call arbitrary
native firmware functions. The driver installs the OpRegion
handler if there is an HPQ5001 device or if the user supplies
the "force" module parameter, e.g., with the "aml_nfw.force"
kernel command line option.
config KEXEC
bool "kexec system call"
depends on !SMP || HOTPLUG_CPU
select KEXEC_CORE
help
kexec is a system call that implements the ability to shutdown your
current kernel, and to start another kernel. It is like a reboot
but it is independent of the system firmware. And like a reboot
you can start any kernel with it, not just Linux.
The name comes from the similarity to the exec system call.
It is an ongoing process to be certain the hardware in a machine
is properly shutdown, so do not be surprised if this code does not
initially work for you. As of this writing the exact hardware
interface is strongly in flux, so no good recommendation can be
made.
config CRASH_DUMP
bool "kernel crash dumps"
depends on IA64_MCA_RECOVERY && (!SMP || HOTPLUG_CPU)
help
Generate crash dump after being started by kexec.
endmenu
menu "Power management and ACPI options"
source "kernel/power/Kconfig"
source "drivers/acpi/Kconfig"
if PM
menu "CPU Frequency scaling"
source "drivers/cpufreq/Kconfig"
endmenu
endif
endmenu
config MSPEC
tristate "Memory special operations driver"
depends on IA64
select IA64_UNCACHED_ALLOCATOR
help
If you have an ia64 and you want to enable memory special
operations support (formerly known as fetchop), say Y here,
otherwise say N.
Mini Shell