13 files changed, 15 insertions, 0 deletions

diff --git a/arch/Kconfig b/arch/Kconfig
index 26b0e2397a57..4b0669cbb3b0 100644
--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -178,4 +178,7 @@ config HAVE_ARCH_MUTEX_CPU_RELAX
 config HAVE_RCU_TABLE_FREE
         bool
 
+config ARCH_HAVE_NMI_SAFE_CMPXCHG
+        bool
+
 source "kernel/gcov/Kconfig"
diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig
index ca2da8da6e9c..60cde53d266c 100644
--- a/arch/alpha/Kconfig
+++ b/arch/alpha/Kconfig
@@ -14,6 +14,7 @@ config ALPHA
         select AUTO_IRQ_AFFINITY if SMP
         select GENERIC_IRQ_SHOW
         select ARCH_WANT_OPTIONAL_GPIOLIB
+        select ARCH_HAVE_NMI_SAFE_CMPXCHG
         help
           The Alpha is a 64-bit general-purpose processor designed and
           marketed by the Digital Equipment Corporation of blessed memory,
diff --git a/arch/avr32/Kconfig b/arch/avr32/Kconfig
index e9d689b7c833..197e96f70405 100644
--- a/arch/avr32/Kconfig
+++ b/arch/avr32/Kconfig
@@ -10,6 +10,7 @@ config AVR32
         select GENERIC_IRQ_PROBE
         select HARDIRQS_SW_RESEND
         select GENERIC_IRQ_SHOW
+        select ARCH_HAVE_NMI_SAFE_CMPXCHG
         help
           AVR32 is a high-performance 32-bit RISC microprocessor core,
           designed for cost-sensitive embedded applications, with particular
diff --git a/arch/frv/Kconfig b/arch/frv/Kconfig
index cb884e489425..bad27a6ff407 100644
--- a/arch/frv/Kconfig
+++ b/arch/frv/Kconfig
@@ -7,6 +7,7 @@ config FRV
         select HAVE_PERF_EVENTS
         select HAVE_GENERIC_HARDIRQS
         select GENERIC_IRQ_SHOW
+        select ARCH_HAVE_NMI_SAFE_CMPXCHG
 
 config ZONE_DMA
         bool
diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig
index 64c7ab7e7a81..124854714958 100644
--- a/arch/ia64/Kconfig
+++ b/arch/ia64/Kconfig
@@ -28,6 +28,7 @@ config IA64
         select IRQ_PER_CPU
         select GENERIC_IRQ_SHOW
         select ARCH_WANT_OPTIONAL_GPIOLIB
+        select ARCH_HAVE_NMI_SAFE_CMPXCHG
         default y
         help
           The Itanium Processor Family is Intel's 64-bit successor to
diff --git a/arch/m68k/Kconfig b/arch/m68k/Kconfig
index 284cd3771eaa..9e8ee9d2b8ca 100644
--- a/arch/m68k/Kconfig
+++ b/arch/m68k/Kconfig
@@ -6,6 +6,7 @@ config M68K
         select GENERIC_ATOMIC64 if MMU
         select HAVE_GENERIC_HARDIRQS if !MMU
         select GENERIC_IRQ_SHOW if !MMU
+        select ARCH_HAVE_NMI_SAFE_CMPXCHG if RMW_INSNS
 
 config RWSEM_GENERIC_SPINLOCK
         bool
diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig
index 65adc86a230e..e077b0bf56ca 100644
--- a/arch/parisc/Kconfig
+++ b/arch/parisc/Kconfig
@@ -15,6 +15,7 @@ config PARISC
         select HAVE_GENERIC_HARDIRQS
         select GENERIC_IRQ_PROBE
         select IRQ_PER_CPU
+        select ARCH_HAVE_NMI_SAFE_CMPXCHG
 
         help
           The PA-RISC microprocessor is designed by Hewlett-Packard and used
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 374c475e56a3..6926b61acfea 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -136,6 +136,7 @@ config PPC
         select HAVE_SYSCALL_TRACEPOINTS
         select HAVE_BPF_JIT if (PPC64 && NET)
         select HAVE_ARCH_JUMP_LABEL
+        select ARCH_HAVE_NMI_SAFE_CMPXCHG
 
 config EARLY_PRINTK
         bool
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index c03fef7a9c22..0f98bbddade5 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -81,6 +81,7 @@ config S390
         select INIT_ALL_POSSIBLE
         select HAVE_IRQ_WORK
         select HAVE_PERF_EVENTS
+        select ARCH_HAVE_NMI_SAFE_CMPXCHG
         select HAVE_KERNEL_GZIP
         select HAVE_KERNEL_BZIP2
         select HAVE_KERNEL_LZMA
diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index 748ff1920068..ff9177c8f643 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -11,6 +11,7 @@ config SUPERH
         select HAVE_DMA_ATTRS
         select HAVE_IRQ_WORK
         select HAVE_PERF_EVENTS
+        select ARCH_HAVE_NMI_SAFE_CMPXCHG if (GUSA_RB || CPU_SH4A)
         select PERF_USE_VMALLOC
         select HAVE_KERNEL_GZIP
         select HAVE_KERNEL_BZIP2
diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index 1074dddcb104..42c67beadcae 100644
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -54,6 +54,7 @@ config SPARC64
         select HAVE_PERF_EVENTS
         select PERF_USE_VMALLOC
         select IRQ_PREFLOW_FASTEOI
+        select ARCH_HAVE_NMI_SAFE_CMPXCHG
 
 config ARCH_DEFCONFIG
         string
diff --git a/arch/tile/Kconfig b/arch/tile/Kconfig
index 0249b8b4db54..b30f71ac0d06 100644
--- a/arch/tile/Kconfig
+++ b/arch/tile/Kconfig
@@ -12,6 +12,7 @@ config TILE
         select GENERIC_PENDING_IRQ if SMP
         select GENERIC_IRQ_SHOW
         select SYS_HYPERVISOR
+        select ARCH_HAVE_NMI_SAFE_CMPXCHG if !M386
 
 # FIXME: investigate whether we need/want these options.
 #       select HAVE_IOREMAP_PROT
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 7cf916fc1ce7..6a47bb22657f 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -72,6 +72,7 @@ config X86
         select USE_GENERIC_SMP_HELPERS if SMP
         select HAVE_BPF_JIT if (X86_64 && NET)
         select CLKEVT_I8253
+        select ARCH_HAVE_NMI_SAFE_CMPXCHG
 
 config INSTRUCTION_DECODER
         def_bool (KPROBES || PERF_EVENTS)