3.8-stable review patch. If anyone has any objections, please let me know.
------------------
From: "Suzuki K. Poulose" <suz...@in.ibm.com>
commit 5e249d4528528c9a77da051a89ec7f99d31b83eb upstream.
Uprobes uses emulate_step in sstep.c, but we haven't explicitly specified
the dependency. On pseries HAVE_HW_BREAKPOINT protects us, but 44x has no
such luxury.
Consolidate other users that depend on sstep and create a new config option.
Signed-off-by: Ananth N Mavinakayanahalli <ana...@in.ibm.com>
Signed-off-by: Suzuki K. Poulose <suz...@in.ibm.com>
Cc: linuxppc-...@ozlabs.org
Signed-off-by: Benjamin Herrenschmidt <b...@kernel.crashing.org>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
arch/powerpc/Kconfig | 4 ++++
arch/powerpc/lib/Makefile | 4 +---
2 files changed, 5 insertions(+), 3 deletions(-)
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -275,6 +275,10 @@ config PPC_ADV_DEBUG_DAC_RANGE
depends on PPC_ADV_DEBUG_REGS && 44x
default y
+config PPC_EMULATE_SSTEP
+ bool
+ default y if KPROBES || UPROBES || XMON || HAVE_HW_BREAKPOINT
+
source "init/Kconfig"
source "kernel/Kconfig.freezer"
--- a/arch/powerpc/lib/Makefile
+++ b/arch/powerpc/lib/Makefile
@@ -19,9 +19,7 @@ obj-$(CONFIG_PPC64) += copypage_64.o cop
checksum_wrappers_64.o hweight_64.o \
copyuser_power7.o string_64.o copypage_power7.o \
memcpy_power7.o
-obj-$(CONFIG_XMON) += sstep.o ldstfp.o
-obj-$(CONFIG_KPROBES) += sstep.o ldstfp.o
-obj-$(CONFIG_HAVE_HW_BREAKPOINT) += sstep.o ldstfp.o
+obj-$(CONFIG_PPC_EMULATE_SSTEP) += sstep.o ldstfp.o
ifeq ($(CONFIG_PPC64),y)
obj-$(CONFIG_SMP) += locks.o
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