1 files changed, 7 insertions, 13 deletions

diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index c33e3ad2c8fd..bc3a0ebf16a7 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -138,6 +138,7 @@ config PPC
         select ARCH_USE_BUILTIN_BSWAP
         select OLD_SIGSUSPEND
         select OLD_SIGACTION if PPC32
+        select HAVE_DEBUG_STACKOVERFLOW
 
 config EARLY_PRINTK
         bool
@@ -298,7 +299,7 @@ config HUGETLB_PAGE_SIZE_VARIABLE
 
 config MATH_EMULATION
         bool "Math emulation"
-        depends on 4xx || 8xx || E200 || PPC_MPC832x || E500
+        depends on 4xx || 8xx || PPC_MPC832x || BOOKE
         ---help---
           Some PowerPC chips designed for embedded applications do not have
           a floating-point unit and therefore do not implement the
@@ -307,6 +308,10 @@ config MATH_EMULATION
           unit, which will allow programs that use floating-point
           instructions to run.
 
+          This is also useful to emulate missing (optional) instructions
+          such as fsqrt on cores that do have an FPU but do not implement
+          them (such as Freescale BookE).
+
 config PPC_TRANSACTIONAL_MEM
        bool "Transactional Memory support for POWERPC"
        depends on PPC_BOOK3S_64
@@ -315,17 +320,6 @@ config PPC_TRANSACTIONAL_MEM
        ---help---
          Support user-mode Transactional Memory on POWERPC.
 
-config 8XX_MINIMAL_FPEMU
-        bool "Minimal math emulation for 8xx"
-        depends on 8xx && !MATH_EMULATION
-        help
-          Older arch/ppc kernels still emulated a few floating point
-          instructions such as load and store, even when full math
-          emulation is disabled.  Say "Y" here if you want to preserve
-          this behavior.
-
-          It is recommended that you build a soft-float userspace instead.
-
 config IOMMU_HELPER
         def_bool PPC64
 
@@ -341,7 +335,7 @@ config SWIOTLB
 
 config HOTPLUG_CPU
         bool "Support for enabling/disabling CPUs"
-        depends on SMP && HOTPLUG && (PPC_PSERIES || \
+        depends on SMP && (PPC_PSERIES || \
         PPC_PMAC || PPC_POWERNV || (PPC_85xx && !PPC_E500MC))
         ---help---
           Say Y here to be able to disable and re-enable individual