Merge commit 'v2.6.28-rc2' into x86/pci-ioapic-boot-irq-quirks

1 files changed, 200 insertions, 95 deletions

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 09521332636b..f4ed47db79ee 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -18,25 +18,28 @@ config X86_64
 ### Arch settings
 config X86
         def_bool y
+        select HAVE_AOUT if X86_32
         select HAVE_UNSTABLE_SCHED_CLOCK
         select HAVE_IDE
         select HAVE_OPROFILE
+        select HAVE_IOREMAP_PROT
         select HAVE_KPROBES
+        select ARCH_WANT_OPTIONAL_GPIOLIB
         select HAVE_KRETPROBES
+        select HAVE_FTRACE_MCOUNT_RECORD
         select HAVE_DYNAMIC_FTRACE
         select HAVE_FTRACE
         select HAVE_KVM if ((X86_32 && !X86_VOYAGER && !X86_VISWS && !X86_NUMAQ) || X86_64)
         select HAVE_ARCH_KGDB if !X86_VOYAGER
+        select HAVE_ARCH_TRACEHOOK
+        select HAVE_GENERIC_DMA_COHERENT if X86_32
+        select HAVE_EFFICIENT_UNALIGNED_ACCESS
 
 config ARCH_DEFCONFIG
         string
         default "arch/x86/configs/i386_defconfig" if X86_32
         default "arch/x86/configs/x86_64_defconfig" if X86_64
 
-
-config GENERIC_LOCKBREAK
-        def_bool n
-
 config GENERIC_TIME
         def_bool y
 
@@ -89,7 +92,7 @@ config GENERIC_HWEIGHT
         def_bool y
 
 config GENERIC_GPIO
-        def_bool n
+        bool
 
 config ARCH_MAY_HAVE_PC_FDC
         def_bool y
@@ -100,12 +103,6 @@ config RWSEM_GENERIC_SPINLOCK
 config RWSEM_XCHGADD_ALGORITHM
         def_bool X86_XADD
 
-config ARCH_HAS_ILOG2_U32
-        def_bool n
-
-config ARCH_HAS_ILOG2_U64
-        def_bool n
-
 config ARCH_HAS_CPU_IDLE_WAIT
         def_bool y
 
@@ -119,6 +116,9 @@ config GENERIC_TIME_VSYSCALL
 config ARCH_HAS_CPU_RELAX
         def_bool y
 
+config ARCH_HAS_DEFAULT_IDLE
+        def_bool y
+
 config ARCH_HAS_CACHE_LINE_SIZE
         def_bool y
 
@@ -147,9 +147,6 @@ config AUDIT_ARCH
         bool
         default X86_64
 
-config ARCH_SUPPORTS_AOUT
-        def_bool y
-
 config ARCH_SUPPORTS_OPTIMIZED_INLINING
         def_bool y
 
@@ -200,6 +197,7 @@ config X86_TRAMPOLINE
 config KTIME_SCALAR
         def_bool X86_32
 source "init/Kconfig"
+source "kernel/Kconfig.freezer"
 
 menu "Processor type and features"
 
@@ -329,20 +327,6 @@ config X86_BIGSMP
 
 endif
 
-config X86_RDC321X
-        bool "RDC R-321x SoC"
-        depends on X86_32
-        select M486
-        select X86_REBOOTFIXUPS
-        select GENERIC_GPIO
-        select LEDS_CLASS
-        select LEDS_GPIO
-        select NEW_LEDS
-        help
-          This option is needed for RDC R-321x system-on-chip, also known
-          as R-8610-(G).
-          If you don't have one of these chips, you should say N here.
-
 config X86_VSMP
         bool "Support for ScaleMP vSMP"
         select PARAVIRT
@@ -366,6 +350,16 @@ config X86_VISWS
           A kernel compiled for the Visual Workstation will run on general
           PCs as well. See <file:Documentation/sgi-visws.txt> for details.
 
+config X86_RDC321X
+        bool "RDC R-321x SoC"
+        depends on X86_32
+        select M486
+        select X86_REBOOTFIXUPS
+        help
+          This option is needed for RDC R-321x system-on-chip, also known
+          as R-8610-(G).
+          If you don't have one of these chips, you should say N here.
+
 config SCHED_NO_NO_OMIT_FRAME_POINTER
         def_bool y
         prompt "Single-depth WCHAN output"
@@ -447,7 +441,6 @@ config PARAVIRT_DEBUG
 
 config MEMTEST
         bool "Memtest"
-        depends on X86_64
         help
           This option adds a kernel parameter 'memtest', which allows memtest
           to be set.
@@ -554,6 +547,7 @@ config CALGARY_IOMMU_ENABLED_BY_DEFAULT
 config AMD_IOMMU
         bool "AMD IOMMU support"
         select SWIOTLB
+        select PCI_MSI
         depends on X86_64 && PCI && ACPI
         help
           With this option you can enable support for AMD IOMMU hardware in
@@ -578,35 +572,29 @@ config SWIOTLB
 
 config IOMMU_HELPER
         def_bool (CALGARY_IOMMU || GART_IOMMU || SWIOTLB || AMD_IOMMU)
+
 config MAXSMP
         bool "Configure Maximum number of SMP Processors and NUMA Nodes"
-        depends on X86_64 && SMP
+        depends on X86_64 && SMP && BROKEN
         default n
         help
           Configure maximum number of CPUS and NUMA Nodes for this architecture.
           If unsure, say N.
 
-if MAXSMP
-config NR_CPUS
-        int
-        default "4096"
-endif
-
-if !MAXSMP
 config NR_CPUS
-        int "Maximum number of CPUs (2-4096)"
-        range 2 4096
+        int "Maximum number of CPUs (2-512)" if !MAXSMP
+        range 2 512
         depends on SMP
+        default "4096" if MAXSMP
         default "32" if X86_NUMAQ || X86_SUMMIT || X86_BIGSMP || X86_ES7000
         default "8"
         help
           This allows you to specify the maximum number of CPUs which this
-          kernel will support.  The maximum supported value is 4096 and the
+          kernel will support.  The maximum supported value is 512 and the
           minimum value which makes sense is 2.
 
           This is purely to save memory - each supported CPU adds
           approximately eight kilobytes to the kernel image.
-endif
 
 config SCHED_SMT
         bool "SMT (Hyperthreading) scheduler support"
@@ -789,9 +777,8 @@ config I8K
           Say N otherwise.
 
 config X86_REBOOTFIXUPS
-        def_bool n
-        prompt "Enable X86 board specific fixups for reboot"
-        depends on X86_32 && X86
+        bool "Enable X86 board specific fixups for reboot"
+        depends on X86_32
         ---help---
           This enables chipset and/or board specific fixups to be done
           in order to get reboot to work correctly. This is only needed on
@@ -807,23 +794,45 @@ config X86_REBOOTFIXUPS
           Say N otherwise.
 
 config MICROCODE
-        tristate "/dev/cpu/microcode - Intel IA32 CPU microcode support"
+        tristate "/dev/cpu/microcode - microcode support"
         select FW_LOADER
         ---help---
           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
-          Linux kernel.
+          certain Intel and AMD processors. The Intel support is for the
+          IA32 family, e.g. Pentium Pro, Pentium II, Pentium III,
+          Pentium 4, Xeon etc. The AMD support is for family 0x10 and
+          0x11 processors, e.g. Opteron, Phenom and Turion 64 Ultra.
+          You will obviously need the actual microcode binary data itself
+          which is not shipped with the Linux kernel.
 
-          For latest news and information on obtaining all the required
-          ingredients for this driver, check:
-          <http://www.urbanmyth.org/microcode/>.
+          This option selects the general module only, you need to select
+          at least one vendor specific module as well.
 
           To compile this driver as a module, choose M here: the
           module will be called microcode.
 
-config MICROCODE_OLD_INTERFACE
+config MICROCODE_INTEL
+       bool "Intel microcode patch loading support"
+       depends on MICROCODE
+       default MICROCODE
+       select FW_LOADER
+       --help---
+         This options enables microcode patch loading support for Intel
+         processors.
+
+         For latest news and information on obtaining all the required
+         Intel ingredients for this driver, check:
+         <http://www.urbanmyth.org/microcode/>.
+
+config MICROCODE_AMD
+       bool "AMD microcode patch loading support"
+       depends on MICROCODE
+       select FW_LOADER
+       --help---
+         If you select this option, microcode patch loading support for AMD
+         processors will be enabled.
+
+   config MICROCODE_OLD_INTERFACE
         def_bool y
         depends on MICROCODE
 
@@ -953,16 +962,17 @@ config HIGHMEM
         depends on X86_32 && (HIGHMEM64G || HIGHMEM4G)
 
 config X86_PAE
-        def_bool n
-        prompt "PAE (Physical Address Extension) Support"
+        bool "PAE (Physical Address Extension) Support"
         depends on X86_32 && !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.
 
+config ARCH_PHYS_ADDR_T_64BIT
+       def_bool X86_64 || X86_PAE
+
 # Common NUMA Features
 config NUMA
         bool "Numa Memory Allocation and Scheduler Support (EXPERIMENTAL)"
@@ -976,9 +986,9 @@ config NUMA
           local memory controller of the CPU and add some more
           NUMA awareness to the kernel.
 
-          For i386 this is currently highly experimental and should be only
+          For 32-bit this is currently highly experimental and should be only
           used for kernel development. It might also cause boot failures.
-          For x86_64 this is recommended on all multiprocessor Opteron systems.
+          For 64-bit this is recommended on all multiprocessor Opteron systems.
           If the system is EM64T, you should say N unless your system is
           EM64T NUMA.
 
@@ -1021,17 +1031,10 @@ config NUMA_EMU
           into virtual nodes when booted with "numa=fake=N", where N is the
           number of nodes. This is only useful for debugging.
 
-if MAXSMP
-
 config NODES_SHIFT
-        int
-        default "9"
-endif
-
-if !MAXSMP
-config NODES_SHIFT
-        int "Maximum NUMA Nodes (as a power of 2)"
+        int "Maximum NUMA Nodes (as a power of 2)" if !MAXSMP
         range 1 9   if X86_64
+        default "9" if MAXSMP
         default "6" if X86_64
         default "4" if X86_NUMAQ
         default "3"
@@ -1039,7 +1042,6 @@ config NODES_SHIFT
         help
           Specify the maximum number of NUMA Nodes available on the target
           system.  Increases memory reserved to accomodate various tables.
-endif
 
 config HAVE_ARCH_BOOTMEM_NODE
         def_bool y
@@ -1059,7 +1061,7 @@ config HAVE_ARCH_ALLOC_REMAP
 
 config ARCH_FLATMEM_ENABLE
         def_bool y
-        depends on X86_32 && ARCH_SELECT_MEMORY_MODEL && X86_PC && !NUMA
+        depends on X86_32 && ARCH_SELECT_MEMORY_MODEL && !NUMA
 
 config ARCH_DISCONTIGMEM_ENABLE
         def_bool y
@@ -1075,7 +1077,7 @@ config ARCH_SPARSEMEM_DEFAULT
 
 config ARCH_SPARSEMEM_ENABLE
         def_bool y
-        depends on X86_64 || NUMA || (EXPERIMENTAL && X86_PC)
+        depends on X86_64 || NUMA || (EXPERIMENTAL && X86_PC) || X86_GENERICARCH
         select SPARSEMEM_STATIC if X86_32
         select SPARSEMEM_VMEMMAP_ENABLE if X86_64
 
@@ -1098,6 +1100,56 @@ config HIGHPTE
           low memory.  Setting this option will put user-space page table
           entries in high memory.
 
+config X86_CHECK_BIOS_CORRUPTION
+        bool "Check for low memory corruption"
+        help
+         Periodically check for memory corruption in low memory, which
+         is suspected to be caused by BIOS.  Even when enabled in the
+         configuration, it is disabled at runtime.  Enable it by
+         setting "memory_corruption_check=1" on the kernel command
+         line.  By default it scans the low 64k of memory every 60
+         seconds; see the memory_corruption_check_size and
+         memory_corruption_check_period parameters in
+         Documentation/kernel-parameters.txt to adjust this.
+
+         When enabled with the default parameters, this option has
+         almost no overhead, as it reserves a relatively small amount
+         of memory and scans it infrequently.  It both detects corruption
+         and prevents it from affecting the running system.
+
+         It is, however, intended as a diagnostic tool; if repeatable
+         BIOS-originated corruption always affects the same memory,
+         you can use memmap= to prevent the kernel from using that
+         memory.
+
+config X86_BOOTPARAM_MEMORY_CORRUPTION_CHECK
+        bool "Set the default setting of memory_corruption_check"
+        depends on X86_CHECK_BIOS_CORRUPTION
+        default y
+        help
+         Set whether the default state of memory_corruption_check is
+         on or off.
+
+config X86_RESERVE_LOW_64K
+        bool "Reserve low 64K of RAM on AMI/Phoenix BIOSen"
+        default y
+        help
+         Reserve the first 64K of physical RAM on BIOSes that are known
+         to potentially corrupt that memory range. A numbers of BIOSes are
+         known to utilize this area during suspend/resume, so it must not
+         be used by the kernel.
+
+         Set this to N if you are absolutely sure that you trust the BIOS
+         to get all its memory reservations and usages right.
+
+         If you have doubts about the BIOS (e.g. suspend/resume does not
+         work or there's kernel crashes after certain hardware hotplug
+         events) and it's not AMI or Phoenix, then you might want to enable
+         X86_CHECK_BIOS_CORRUPTION=y to allow the kernel to check typical
+         corruption patterns.
+
+         Say Y if unsure.
+
 config MATH_EMULATION
         bool
         prompt "Math emulation" if X86_32
@@ -1156,10 +1208,10 @@ config MTRR
           You can safely say Y even if your machine doesn't have MTRRs, you'll
           just add about 9 KB to your kernel.
 
-          See <file:Documentation/mtrr.txt> for more information.
+          See <file:Documentation/x86/mtrr.txt> for more information.
 
 config MTRR_SANITIZER
-        bool
+        def_bool y
         prompt "MTRR cleanup support"
         depends on MTRR
         help
@@ -1170,7 +1222,7 @@ config MTRR_SANITIZER
           The largest mtrr entry size for a continous block can be set with
           mtrr_chunk_size.
 
-          If unsure, say N.
+          If unsure, say Y.
 
 config MTRR_SANITIZER_ENABLE_DEFAULT
         int "MTRR cleanup enable value (0-1)"
@@ -1205,8 +1257,7 @@ config X86_PAT
           If unsure, say Y.
 
 config EFI
-        def_bool n
-        prompt "EFI runtime service support"
+        bool "EFI runtime service support"
         depends on ACPI
         ---help---
         This enables the kernel to use EFI runtime services that are
@@ -1219,18 +1270,9 @@ config EFI
         resultant kernel should continue to boot on existing non-EFI
         platforms.
 
-config IRQBALANCE
-        def_bool y
-        prompt "Enable kernel irq balancing"
-        depends on X86_32 && SMP && X86_IO_APIC
-        help
-          The default yes will allow the kernel to do irq load balancing.
-          Saying no will keep the kernel from doing irq load balancing.
-
 config SECCOMP
         def_bool y
         prompt "Enable seccomp to safely compute untrusted bytecode"
-        depends on PROC_FS
         help
           This kernel feature is useful for number crunching applications
           that may need to compute untrusted bytecode during their
@@ -1238,7 +1280,7 @@ config SECCOMP
           the process as file descriptors supporting the read/write
           syscalls, it's possible to isolate those applications in
           their own address space using seccomp. Once seccomp is
-          enabled via /proc/<pid>/seccomp, it cannot be disabled
+          enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
           and the task is only allowed to execute a few safe syscalls
           defined by each seccomp mode.
 
@@ -1288,7 +1330,7 @@ config KEXEC
           strongly in flux, so no good recommendation can be made.
 
 config CRASH_DUMP
-        bool "kernel crash dumps (EXPERIMENTAL)"
+        bool "kernel crash dumps"
         depends on X86_64 || (X86_32 && HIGHMEM)
         help
           Generate crash dump after being started by kexec.
@@ -1301,6 +1343,14 @@ config CRASH_DUMP
           (CONFIG_RELOCATABLE=y).
           For more details see Documentation/kdump/kdump.txt
 
+config KEXEC_JUMP
+        bool "kexec jump (EXPERIMENTAL)"
+        depends on EXPERIMENTAL
+        depends on KEXEC && HIBERNATION && X86_32
+        help
+          Jump between original kernel and kexeced kernel and invoke
+          code in physical address mode via KEXEC
+
 config PHYSICAL_START
         hex "Physical address where the kernel is loaded" if (EMBEDDED || CRASH_DUMP)
         default "0x1000000" if X86_NUMAQ
@@ -1387,14 +1437,14 @@ config PHYSICAL_ALIGN
           Don't change this unless you know what you are doing.
 
 config HOTPLUG_CPU
-        bool "Support for suspend on SMP and hot-pluggable CPUs (EXPERIMENTAL)"
-        depends on SMP && HOTPLUG && EXPERIMENTAL && !X86_VOYAGER
+        bool "Support for hot-pluggable CPUs"
+        depends on SMP && HOTPLUG && !X86_VOYAGER
         ---help---
-          Say Y here to experiment with turning CPUs off and on, and to
-          enable suspend on SMP systems. CPUs can be controlled through
-          /sys/devices/system/cpu.
-          Say N if you want to disable CPU hotplug and don't need to
-          suspend.
+          Say Y here to allow turning CPUs off and on. CPUs can be
+          controlled through /sys/devices/system/cpu.
+          ( Note: power management support will enable this option
+            automatically on SMP systems. )
+          Say N if you want to disable CPU hotplug.
 
 config COMPAT_VDSO
         def_bool y
@@ -1409,6 +1459,51 @@ config COMPAT_VDSO
 
           If unsure, say Y.
 
+config CMDLINE_BOOL
+        bool "Built-in kernel command line"
+        default n
+        help
+          Allow for specifying boot arguments to the kernel at
+          build time.  On some systems (e.g. embedded ones), it is
+          necessary or convenient to provide some or all of the
+          kernel boot arguments with the kernel itself (that is,
+          to not rely on the boot loader to provide them.)
+
+          To compile command line arguments into the kernel,
+          set this option to 'Y', then fill in the
+          the boot arguments in CONFIG_CMDLINE.
+
+          Systems with fully functional boot loaders (i.e. non-embedded)
+          should leave this option set to 'N'.
+
+config CMDLINE
+        string "Built-in kernel command string"
+        depends on CMDLINE_BOOL
+        default ""
+        help
+          Enter arguments here that should be compiled into the kernel
+          image and used at boot time.  If the boot loader provides a
+          command line at boot time, it is appended to this string to
+          form the full kernel command line, when the system boots.
+
+          However, you can use the CONFIG_CMDLINE_OVERRIDE option to
+          change this behavior.
+
+          In most cases, the command line (whether built-in or provided
+          by the boot loader) should specify the device for the root
+          file system.
+
+config CMDLINE_OVERRIDE
+        bool "Built-in command line overrides boot loader arguments"
+        default n
+        depends on CMDLINE_BOOL
+        help
+          Set this option to 'Y' to have the kernel ignore the boot loader
+          command line, and use ONLY the built-in command line.
+
+          This is used to work around broken boot loaders.  This should
+          be set to 'N' under normal conditions.
+
 endmenu
 
 config ARCH_ENABLE_MEMORY_HOTPLUG
@@ -1567,6 +1662,8 @@ source "arch/x86/kernel/cpu/cpufreq/Kconfig"
 
 source "drivers/cpuidle/Kconfig"
 
+source "drivers/idle/Kconfig"
+
 endmenu
 
 
@@ -1674,6 +1771,14 @@ config DMAR_FLOPPY_WA
          workaround will setup a 1:1 mapping for the first
          16M to make floppy (an ISA device) work.
 
+config INTR_REMAP
+        bool "Support for Interrupt Remapping (EXPERIMENTAL)"
+        depends on X86_64 && X86_IO_APIC && PCI_MSI && ACPI && EXPERIMENTAL
+        help
+         Supports Interrupt remapping for IO-APIC and MSI devices.
+         To use x2apic mode in the CPU's which support x2APIC enhancements or
+         to support platforms with CPU's having > 8 bit APIC ID, say Y.
+
 source "drivers/pci/pcie/Kconfig"
 
 source "drivers/pci/Kconfig"
@@ -1790,7 +1895,7 @@ config IA32_EMULATION
 
 config IA32_AOUT
        tristate "IA32 a.out support"
-       depends on IA32_EMULATION && ARCH_SUPPORTS_AOUT
+       depends on IA32_EMULATION
        help
          Support old a.out binaries in the 32bit emulation.
 
@@ -1804,7 +1909,7 @@ config COMPAT_FOR_U64_ALIGNMENT
 
 config SYSVIPC_COMPAT
         def_bool y
-        depends on X86_64 && COMPAT && SYSVIPC
+        depends on COMPAT && SYSVIPC
 
 endmenu