bool
default y
+config GENERIC_CMOS_UPDATE
+ bool
+ default y
+
config CLOCKSOURCE_WATCHDOG
bool
default y
However, when run without a hypervisor the kernel is
theoretically slower. If in doubt, say N.
-source "arch/i386/xen/Kconfig"
+source "arch/x86/xen/Kconfig"
config VMI
bool "VMI Paravirt-ops support"
tristate "/dev/cpu/microcode - Intel IA32 CPU microcode support"
select FW_LOADER
---help---
- If you say Y here and also to "/dev file system support" in the
- 'File systems' section, you will be able to update the microcode on
+ If you say Y here, you will be able to update the microcode on
Intel processors in the IA32 family, e.g. Pentium Pro, Pentium II,
Pentium III, Pentium 4, Xeon etc. You will obviously need the
actual microcode binary data itself which is not shipped with the
config HIGHMEM64G
bool "64GB"
depends on !M386 && !M486
+ select X86_PAE
help
Select this if you have a 32-bit processor and more than 4
gigabytes of physical RAM.
config VMSPLIT_3G
bool "3G/1G user/kernel split"
config VMSPLIT_3G_OPT
- depends on !HIGHMEM
+ depends on !X86_PAE
bool "3G/1G user/kernel split (for full 1G low memory)"
config VMSPLIT_2G
bool "2G/2G user/kernel split"
config VMSPLIT_2G_OPT
- depends on !HIGHMEM
+ depends on !X86_PAE
bool "2G/2G user/kernel split (for full 2G low memory)"
config VMSPLIT_1G
bool "1G/3G user/kernel split"
default y
config X86_PAE
- bool
- depends on HIGHMEM64G
- default y
+ bool "PAE (Physical Address Extension) Support"
+ default n
+ depends on !HIGHMEM4G
select RESOURCES_64BIT
+ help
+ PAE is required for NX support, and furthermore enables
+ larger swapspace support for non-overcommit purposes. It
+ has the cost of more pagetable lookup overhead, and also
+ consumes more pagetable space per process.
# Common NUMA Features
config NUMA
- bool "Numa Memory Allocation and Scheduler Support"
- depends on SMP && HIGHMEM64G && (X86_NUMAQ || (X86_SUMMIT || X86_GENERICARCH) && ACPI)
+ bool "Numa Memory Allocation and Scheduler Support (EXPERIMENTAL)"
+ depends on SMP && HIGHMEM64G && (X86_NUMAQ || (X86_SUMMIT || X86_GENERICARCH) && ACPI) && EXPERIMENTAL
default n if X86_PC
default y if (X86_NUMAQ || X86_SUMMIT)
+ help
+ NUMA support for i386. This is currently high experimental
+ and should be only used for kernel development. It might also
+ cause boot failures.
comment "NUMA (Summit) requires SMP, 64GB highmem support, ACPI"
depends on X86_SUMMIT && (!HIGHMEM64G || !ACPI)
intend to use this kernel on different machines.
More information about the internals of the Linux math coprocessor
- emulation can be found in <file:arch/i386/math-emu/README>.
+ emulation can be found in <file:arch/x86/math-emu/README>.
If you are not sure, say Y; apart from resulting in a 66 KB bigger
kernel, it won't hurt.
config PHYSICAL_START
hex "Physical address where the kernel is loaded" if (EMBEDDED || CRASH_DUMP)
+ default "0x1000000" if X86_NUMAQ
default "0x100000"
help
This gives the physical address where the kernel is loaded.
menuconfig APM
tristate "APM (Advanced Power Management) BIOS support"
- depends on PM && !X86_VISWS
+ depends on PM_SLEEP && !X86_VISWS
---help---
APM is a BIOS specification for saving power using several different
techniques. This is mostly useful for battery powered laptops with
endif # APM
-source "arch/i386/kernel/cpu/cpufreq/Kconfig"
+source "arch/x86/kernel/cpu/cpufreq/Kconfig"
endmenu
bool "Instrumentation Support"
depends on EXPERIMENTAL
default y
+ ---help---
+ Say Y here to get to see options related to performance measurement,
+ debugging, and testing. This option alone does not add any kernel code.
+
+ If you say N, all options in this submenu will be skipped and disabled.
if INSTRUMENTATION
-source "arch/i386/oprofile/Kconfig"
+source "arch/x86/oprofile/Kconfig"
config KPROBES
bool "Kprobes"