diff --git a/0001-Revert-tools-build-Support-compiling-C-source-file.patch b/0001-Revert-tools-build-Support-compiling-C-source-file.patch
new file mode 100644
index 0000000..411db3c
--- /dev/null
+++ b/0001-Revert-tools-build-Support-compiling-C-source-file.patch
@@ -0,0 +1,51 @@
+From 13304cca47c956c308ce8f3fc7b37b61895fa1ea Mon Sep 17 00:00:00 2001
+From: Laura Abbott <labbott@redhat.com>
+Date: Tue, 11 Oct 2016 13:10:26 -0700
+Subject: [PATCH 1/2] Revert "tools build: Support compiling C++ source file"
+
+This reverts commit f61bdc3304281e9ff9eec4f1ed9fb15bcf4d8a5e.
+---
+ tools/build/Build.include  | 1 -
+ tools/build/Makefile.build | 7 -------
+ 2 files changed, 8 deletions(-)
+
+diff --git a/tools/build/Build.include b/tools/build/Build.include
+index 1dcb95e..0248938 100644
+--- a/tools/build/Build.include
++++ b/tools/build/Build.include
+@@ -90,7 +90,6 @@ if_changed = $(if $(strip $(any-prereq) $(arg-check)),             \
+ # - per object C flags
+ # - BUILD_STR macro to allow '-D"$(variable)"' constructs
+ c_flags = -Wp,-MD,$(depfile),-MT,$@ $(CFLAGS) -D"BUILD_STR(s)=\#s" $(CFLAGS_$(basetarget).o) $(CFLAGS_$(obj))
+-cxx_flags = -Wp,-MD,$(depfile),-MT,$@ $(CXXFLAGS) -D"BUILD_STR(s)=\#s" $(CXXFLAGS_$(basetarget).o) $(CXXFLAGS_$(obj))
+ 
+ ###
+ ## HOSTCC C flags
+diff --git a/tools/build/Makefile.build b/tools/build/Makefile.build
+index 99c0ccd..190519a 100644
+--- a/tools/build/Makefile.build
++++ b/tools/build/Makefile.build
+@@ -61,9 +61,6 @@ quiet_cmd_cc_o_c = CC       $@
+ quiet_cmd_host_cc_o_c = HOSTCC   $@
+       cmd_host_cc_o_c = $(HOSTCC) $(host_c_flags) -c -o $@ $<
+ 
+-quiet_cmd_cxx_o_c = CXX      $@
+-      cmd_cxx_o_c = $(CXX) $(cxx_flags) -c -o $@ $<
+-
+ quiet_cmd_cpp_i_c = CPP      $@
+       cmd_cpp_i_c = $(CC) $(c_flags) -E -o $@ $<
+ 
+@@ -91,10 +88,6 @@ $(OUTPUT)%.o: %.c FORCE
+ 	$(call rule_mkdir)
+ 	$(call if_changed_dep,$(host)cc_o_c)
+ 
+-$(OUTPUT)%.o: %.cpp FORCE
+-	$(call rule_mkdir)
+-	$(call if_changed_dep,cxx_o_c)
+-
+ $(OUTPUT)%.o: %.S FORCE
+ 	$(call rule_mkdir)
+ 	$(call if_changed_dep,$(host)cc_o_c)
+-- 
+2.7.4
+
diff --git a/0002-Revert-tools-build-Add-support-for-host-programs-for.patch b/0002-Revert-tools-build-Add-support-for-host-programs-for.patch
new file mode 100644
index 0000000..a6fbbaa
--- /dev/null
+++ b/0002-Revert-tools-build-Add-support-for-host-programs-for.patch
@@ -0,0 +1,97 @@
+From b9bde1ab2f260d56413511bbb68199ea3c45ec1f Mon Sep 17 00:00:00 2001
+From: Laura Abbott <labbott@redhat.com>
+Date: Tue, 11 Oct 2016 13:10:34 -0700
+Subject: [PATCH 2/2] Revert "tools build: Add support for host programs
+ format"
+
+This reverts commit 0c3b7e42616f1f6084cfeb0d443cbff0b2c424a9.
+---
+ tools/build/Build.include  |  5 -----
+ tools/build/Makefile       |  6 ------
+ tools/build/Makefile.build | 19 ++++---------------
+ 3 files changed, 4 insertions(+), 26 deletions(-)
+
+diff --git a/tools/build/Build.include b/tools/build/Build.include
+index 0248938..4d000bc 100644
+--- a/tools/build/Build.include
++++ b/tools/build/Build.include
+@@ -90,8 +90,3 @@ if_changed = $(if $(strip $(any-prereq) $(arg-check)),             \
+ # - per object C flags
+ # - BUILD_STR macro to allow '-D"$(variable)"' constructs
+ c_flags = -Wp,-MD,$(depfile),-MT,$@ $(CFLAGS) -D"BUILD_STR(s)=\#s" $(CFLAGS_$(basetarget).o) $(CFLAGS_$(obj))
+-
+-###
+-## HOSTCC C flags
+-
+-host_c_flags = -Wp,-MD,$(depfile),-MT,$@ $(CHOSTFLAGS) -D"BUILD_STR(s)=\#s" $(CHOSTFLAGS_$(basetarget).o) $(CHOSTFLAGS_$(obj))
+diff --git a/tools/build/Makefile b/tools/build/Makefile
+index 8332959..2659f2f 100644
+--- a/tools/build/Makefile
++++ b/tools/build/Makefile
+@@ -14,12 +14,6 @@ endef
+ $(call allow-override,CC,$(CROSS_COMPILE)gcc)
+ $(call allow-override,LD,$(CROSS_COMPILE)ld)
+ 
+-HOSTCC ?= gcc
+-HOSTLD ?= ld
+-HOSTAR ?= ar
+-
+-export HOSTCC HOSTLD HOSTAR
+-
+ ifeq ($(V),1)
+   Q =
+ else
+diff --git a/tools/build/Makefile.build b/tools/build/Makefile.build
+index 190519a..27f3583 100644
+--- a/tools/build/Makefile.build
++++ b/tools/build/Makefile.build
+@@ -58,9 +58,6 @@ quiet_cmd_mkdir = MKDIR    $(dir $@)
+ quiet_cmd_cc_o_c = CC       $@
+       cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $<
+ 
+-quiet_cmd_host_cc_o_c = HOSTCC   $@
+-      cmd_host_cc_o_c = $(HOSTCC) $(host_c_flags) -c -o $@ $<
+-
+ quiet_cmd_cpp_i_c = CPP      $@
+       cmd_cpp_i_c = $(CC) $(c_flags) -E -o $@ $<
+ 
+@@ -73,24 +70,16 @@ quiet_cmd_gen = GEN      $@
+ # If there's nothing to link, create empty $@ object.
+ quiet_cmd_ld_multi = LD       $@
+       cmd_ld_multi = $(if $(strip $(obj-y)),\
+-                     $(LD) -r -o $@  $(filter $(obj-y),$^),rm -f $@; $(AR) rcs $@)
+-
+-quiet_cmd_host_ld_multi = HOSTLD   $@
+-      cmd_host_ld_multi = $(if $(strip $(obj-y)),\
+-                          $(HOSTLD) -r -o $@  $(filter $(obj-y),$^),rm -f $@; $(HOSTAR) rcs $@)
+-
+-ifneq ($(filter $(obj),$(hostprogs)),)
+-  host = host_
+-endif
++		       $(LD) -r -o $@  $(filter $(obj-y),$^),rm -f $@; $(AR) rcs $@)
+ 
+ # Build rules
+ $(OUTPUT)%.o: %.c FORCE
+ 	$(call rule_mkdir)
+-	$(call if_changed_dep,$(host)cc_o_c)
++	$(call if_changed_dep,cc_o_c)
+ 
+ $(OUTPUT)%.o: %.S FORCE
+ 	$(call rule_mkdir)
+-	$(call if_changed_dep,$(host)cc_o_c)
++	$(call if_changed_dep,cc_o_c)
+ 
+ $(OUTPUT)%.i: %.c FORCE
+ 	$(call rule_mkdir)
+@@ -130,7 +119,7 @@ $(sort $(subdir-obj-y)): $(subdir-y) ;
+ 
+ $(in-target): $(obj-y) FORCE
+ 	$(call rule_mkdir)
+-	$(call if_changed,$(host)ld_multi)
++	$(call if_changed,ld_multi)
+ 
+ __build: $(in-target)
+ 	@:
+-- 
+2.7.4
+
diff --git a/kernel.spec b/kernel.spec
index d52ac94..d4de3f5 100644
--- a/kernel.spec
+++ b/kernel.spec
@@ -42,7 +42,7 @@ Summary: The Linux kernel
 # For non-released -rc kernels, this will be appended after the rcX and
 # gitX tags, so a 3 here would become part of release "0.rcX.gitX.3"
 #
-%global baserelease 1
+%global baserelease 2
 %global fedora_build %{baserelease}
 
 # base_sublevel is the kernel version we're starting with and patching
@@ -615,6 +615,10 @@ Patch849: 0001-iio-Use-event-header-from-kernel-tree.patch
 # Fix came in locally
 Patch851: 0001-drivers-net-phy-Correct-duplicate-MDIO_XGENE-entry.patch
 
+# Maybe related to perf build failures?
+Patch852: 0001-Revert-tools-build-Support-compiling-C-source-file.patch
+Patch853: 0002-Revert-tools-build-Add-support-for-host-programs-for.patch
+
 # END OF PATCH DEFINITIONS
 
 %endif
@@ -2151,6 +2155,9 @@ fi
 #
 #
 %changelog
+* Tue Oct 11 2016 Laura Abbott <labbott@redhat.com> - 4.9.0-0.rc0.git6.2
+- Revert possible commits causing perf build failures
+
 * Tue Oct 11 2016 Laura Abbott <labbott@redhat.com> - 4.9.0-0.rc0.git6.1
 - Linux v4.8-11825-g101105b