Merge branch 'x86-64'

* x86-64: (83 commits)
  [PATCH] x86_64: x86_64 stack usage debugging
  [PATCH] x86_64: (resend) x86_64 stack overflow debugging
  [PATCH] x86_64: msi_apic.c build fix
  [PATCH] x86_64: i386/x86-64 Add nmi watchdog support for new Intel CPUs
  [PATCH] x86_64: Avoid broadcasting NMI IPIs
  [PATCH] x86_64: fix apic error on bootup
  [PATCH] x86_64: enlarge window for stack growth
  [PATCH] x86_64: Minor string functions optimizations
  [PATCH] x86_64: Move export symbols to their C functions
  [PATCH] x86_64: Standardize i386/x86_64 handling of NMI_VECTOR
  [PATCH] x86_64: Fix modular pc speaker
  [PATCH] x86_64: remove sys32_ni_syscall()
  [PATCH] x86_64: Do not use -ffunction-sections for modules
  [PATCH] x86_64: Add cpu_relax to apic_wait_icr_idle
  [PATCH] x86_64: adjust kstack_depth_to_print default
  [PATCH] i386/x86-64: adjust /proc/interrupts column headings
  [PATCH] x86_64: Fix race in cpu_local_* on preemptible kernels
  [PATCH] x86_64: Fix fast check in safe_smp_processor_id
  [PATCH] x86_64: x86_64 setup.c - printing cmp related boottime information
  [PATCH] i386/x86-64/ia64: Move polling flag into thread_info_status
  ...

Manual resolve of trivial conflict in arch/i386/kernel/Makefile

1 files changed, 38 insertions, 13 deletions

diff --git a/arch/x86_64/Kconfig b/arch/x86_64/Kconfig
index af44130f0d65..ccc4a7fb97a3 100644
--- a/arch/x86_64/Kconfig
+++ b/arch/x86_64/Kconfig
@@ -386,24 +386,45 @@ 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 selected by 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
 
@@ -501,6 +522,10 @@ 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
 
 #