Merge branch 'devel-stable' into for-next

[karo-tx-linux.git] / arch / arm / Kconfig

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 73c320ea172c3a8b093af54cd84a937a6b054692..1e9413b60d174035d4a3dd9e5c25f33c09179d2b 100644 (file)
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -195,7 +195,8 @@ config VECTORS_BASE
          The base address of exception vectors.
 
 config ARM_PATCH_PHYS_VIRT
-       bool "Patch physical to virtual translations at runtime"
+       bool "Patch physical to virtual translations at runtime" if EMBEDDED
+       default y
        depends on !XIP_KERNEL && MMU
        depends on !ARCH_REALVIEW || !SPARSEMEM
        help
@@ -204,16 +205,16 @@ config ARM_PATCH_PHYS_VIRT
          kernel in system memory.
 
          This can only be used with non-XIP MMU kernels where the base
-         of physical memory is at a 16MB boundary, or theoretically 64K
-         for the MSM machine class.
+         of physical memory is at a 16MB boundary.
+
+         Only disable this option if you know that you do not require
+         this feature (eg, building a kernel for a single machine) and
+         you need to shrink the kernel to the minimal size.
 
-config ARM_PATCH_PHYS_VIRT_16BIT
+
+config GENERIC_BUG
        def_bool y
-       depends on ARM_PATCH_PHYS_VIRT && ARCH_MSM
-       help
-         This option extends the physical to virtual translation patching
-         to allow physical memory down to a theoretical minimum of 64K
-         boundaries.
+       depends on BUG
 
 source "init/Kconfig"
 
@@ -301,7 +302,6 @@ config ARCH_AT91
        select ARCH_REQUIRE_GPIOLIB
        select HAVE_CLK
        select CLKDEV_LOOKUP
-       select ARM_PATCH_PHYS_VIRT if MMU
        help
          This enables support for systems based on the Atmel AT91RM9200,
          AT91SAM9 and AT91CAP9 processors.
@@ -835,6 +835,7 @@ config ARCH_U300
        select CLKDEV_LOOKUP
        select HAVE_MACH_CLKDEV
        select GENERIC_GPIO
+       select ARCH_REQUIRE_GPIOLIB
        help
          Support for ST-Ericsson U300 series mobile platforms.
 
@@ -1271,6 +1272,18 @@ config ARM_ERRATA_754327
          This workaround defines cpu_relax() as smp_mb(), preventing correctly
          written polling loops from denying visibility of updates to memory.
 
+config ARM_ERRATA_364296
+       bool "ARM errata: Possible cache data corruption with hit-under-miss enabled"
+       depends on CPU_V6 && !SMP
+       help
+         This options enables the workaround for the 364296 ARM1136
+         r0p2 erratum (possible cache data corruption with
+         hit-under-miss enabled). It sets the undocumented bit 31 in
+         the auxiliary control register and the FI bit in the control
+         register, thus disabling hit-under-miss without putting the
+         processor into full low interrupt latency mode. ARM11MPCore
+         is not affected.
+
 endmenu
 
 source "arch/arm/common/Kconfig"
@@ -1381,6 +1394,31 @@ config SMP_ON_UP
 
          If you don't know what to do here, say Y.
 
+config ARM_CPU_TOPOLOGY
+       bool "Support cpu topology definition"
+       depends on SMP && CPU_V7
+       default y
+       help
+         Support ARM cpu topology definition. The MPIDR register defines
+         affinity between processors which is then used to describe the cpu
+         topology of an ARM System.
+
+config SCHED_MC
+       bool "Multi-core scheduler support"
+       depends on ARM_CPU_TOPOLOGY
+       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.
+
+config SCHED_SMT
+       bool "SMT scheduler support"
+       depends on ARM_CPU_TOPOLOGY
+       help
+         Improves the CPU scheduler's decision making when dealing with
+         MultiThreading at a cost of slightly increased overhead in some
+         places. If unsure say N here.
+
 config HAVE_ARM_SCU
        bool
        help