config RWSEM_XCHGADD_ALGORITHM
bool
-config GENERIC_HWEIGHT
- bool
- default y
-
config GENERIC_CALIBRATE_DELAY
bool
default y
default "7" if GENERIC_CPU || MPSC
default "6" if MK8
-config X86_INTERNODE_CACHE_BYTES
- int
- default "4096" if X86_VSMP
- default X86_L1_CACHE_BYTES if !X86_VSMP
-
config X86_TSC
bool
default y
cost of slightly increased overhead in some places. If unsure say
N here.
-config SCHED_MC
- bool "Multi-core scheduler support"
- depends on SMP
- default y
- help
- Multi-core scheduler support improves the CPU scheduler's decision
- making when dealing with multi-core CPU chips at a cost of slightly
- increased overhead in some places. If unsure say N here.
-
source "kernel/Kconfig.preempt"
config NUMA
Northbridge of Opteron. It is recommended to use X86_64_ACPI_NUMA
instead, which also takes priority if both are compiled in.
-config NODES_SHIFT
- int
- default "6"
- depends on NEED_MULTIPLE_NODES
-
# Dummy CONFIG option to select ACPI_NUMA from drivers/acpi/Kconfig.
config X86_64_ACPI_NUMA
def_bool y
depends on NUMA
-config OUT_OF_LINE_PFN_TO_PAGE
- def_bool y
- depends on DISCONTIGMEM
-
config NR_CPUS
int "Maximum number of CPUs (2-256)"
- range 2 255
+ range 2 256
depends on SMP
default "8"
help
can be controlled through /sys/devices/system/cpu/cpu#.
Say N if you want to disable CPU hotplug.
+config ARCH_ENABLE_MEMORY_HOTPLUG
+ def_bool y
config HPET_TIMER
bool
select SWIOTLB
depends on PCI
help
- Support for hardware IOMMU in AMD's Opteron/Athlon64 Processors
- and for the bounce buffering software IOMMU.
- Needed to run systems with more than 3GB of memory properly with
- 32-bit PCI devices that do not support DAC (Double Address Cycle).
- The IOMMU can be turned off at runtime with the iommu=off parameter.
- Normally the kernel will take the right choice by itself.
- This option includes a driver for the AMD Opteron/Athlon64 IOMMU
- northbridge and a software emulation used on other systems without
- hardware IOMMU. If unsure, say Y.
+ Support the IOMMU. Needed to run systems with more than 3GB of memory
+ properly with 32-bit PCI devices that do not support DAC (Double Address
+ Cycle). The IOMMU can be turned off at runtime with the iommu=off parameter.
+ Normally the kernel will take the right choice by itself.
+ This option includes a driver for the AMD Opteron/Athlon64 northbridge IOMMU
+ and a software emulation used on other systems.
+ If unsure, say Y.
# need this always enabled with GART_IOMMU for the VIA workaround
config SWIOTLB
config PHYSICAL_START
hex "Physical address where the kernel is loaded" if (EMBEDDED || CRASH_DUMP)
default "0x1000000" if CRASH_DUMP
- default "0x200000"
+ default "0x100000"
help
This gives the physical address where the kernel is loaded. Normally
- for regular kernels this value is 0x200000 (2MB). But in the case
+ for regular kernels this value is 0x100000 (1MB). But in the case
of kexec on panic the fail safe kernel needs to run at a different
address than the panic-ed kernel. This option is used to set the load
address for kernels used to capture crash dump on being kexec'ed
source kernel/Kconfig.hz
-config REORDER
- bool "Function reordering"
- default n
- help
- This option enables the toolchain to reorder functions for a more
- optimal TLB usage. If you have pretty much any version of binutils,
- this can increase your kernel build time by roughly one minute.
-
endmenu
#
bool "Support mmconfig PCI config space access"
depends on PCI && ACPI
+config UNORDERED_IO
+ bool "Unordered IO mapping access"
+ depends on EXPERIMENTAL
+ help
+ Use unordered stores to access IO memory mappings in device drivers.
+ Still very experimental. When a driver works on IA64/ppc64/pa-risc it should
+ work with this option, but it makes the drivers behave differently
+ from i386. Requires that the driver writer used memory barriers
+ properly.
+
source "drivers/pci/pcie/Kconfig"
source "drivers/pci/Kconfig"
git://git.onelab.eu / linux-2.6.git / blobdiff