X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=arch%2Fx86_64%2FKconfig;h=28df7d88ce2c3cf6e4399df3ef99ed5b26625c3d;hb=c9a4b35df9a5e24065e2dd80aa18a381da62339d;hp=408d44a59756f8050c4455fdbb471eb9c9881f09;hpb=7c8ce71b092425f1e938285cab2a679c09444d9b;p=linux-2.6

diff --git a/arch/x86_64/Kconfig b/arch/x86_64/Kconfig
index 408d44a597..28df7d88ce 100644
--- a/arch/x86_64/Kconfig
+++ b/arch/x86_64/Kconfig
@@ -24,6 +24,14 @@ config X86
 	bool
 	default y
 
+config LOCKDEP_SUPPORT
+	bool
+	default y
+
+config STACKTRACE_SUPPORT
+	bool
+	default y
+
 config SEMAPHORE_SLEEPERS
 	bool
 	default y
@@ -299,6 +307,7 @@ config X86_64_ACPI_NUMA
        bool "ACPI NUMA detection"
        depends on NUMA
        select ACPI 
+	select PCI
        select ACPI_NUMA
        default y
        help
@@ -369,6 +378,8 @@ config HOTPLUG_CPU
 		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
@@ -385,27 +396,47 @@ config HPET_EMULATE_RTC
 	bool "Provide RTC interrupt"
 	depends on HPET_TIMER && RTC=y
 
-config GART_IOMMU
-	bool "K8 GART IOMMU support"
+# Mark as embedded because too many people got it wrong.
+# The code disables itself when not needed.
+config IOMMU
+	bool "IOMMU support" if EMBEDDED
 	default y
 	select SWIOTLB
+	select AGP
 	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.
-
-# need this always enabled with GART_IOMMU for the VIA workaround
+	  Support for full DMA access of devices with 32bit memory access only
+	  on systems with more than 3GB. This is usually needed for USB,
+	  sound, many IDE/SATA chipsets and some other devices.
+	  Provides a driver for the AMD Athlon64/Opteron/Turion/Sempron GART
+	  based IOMMU and a software bounce buffer based IOMMU used on Intel
+	  systems and as fallback.
+	  The code is only active when needed (enough memory and limited
+	  device) unless CONFIG_IOMMU_DEBUG or iommu=force is specified
+	  too.
+
+config CALGARY_IOMMU
+	bool "IBM Calgary IOMMU support"
+	default y
+	select SWIOTLB
+	depends on PCI && EXPERIMENTAL
+	help
+	  Support for hardware IOMMUs in IBM's xSeries x366 and x460
+	  systems. Needed to run systems with more than 3GB of memory
+	  properly with 32-bit PCI devices that do not support DAC
+	  (Double Address Cycle). Calgary also supports bus level
+	  isolation, where all DMAs pass through the IOMMU.  This
+	  prevents them from going anywhere except their intended
+	  destination. This catches hard-to-find kernel bugs and
+	  mis-behaving drivers and devices that do not use the DMA-API
+	  properly to set up their DMA buffers.  The IOMMU can be
+	  turned off at boot time with the iommu=off parameter.
+	  Normally the kernel will make the right choice by itself.
+	  If unsure, say Y.
+
+# need this always selected by IOMMU for the VIA workaround
 config SWIOTLB
 	bool
-	default y
-	depends on GART_IOMMU
 
 config X86_MCE
 	bool "Machine check support" if EMBEDDED
@@ -438,10 +469,10 @@ config KEXEC
 	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 indepedent of the system firmware.   And 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 similiarity to the exec system call.
+	  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
@@ -501,6 +532,10 @@ config REORDER
          optimal TLB usage. If you have pretty much any version of binutils, 
 	 this can increase your kernel build time by roughly one minute.
 
+config K8_NB
+	def_bool y
+	depends on AGP_AMD64 || IOMMU || (PCI && NUMA)
+
 endmenu
 
 #