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Date:	Sat, 05 Jul 2014 15:22:38 +0400
From:	Konstantin Khlebnikov <>
To:	Andrew Morton <>,
Subject: [PATCH] checkstack: use $UTS_MACHINE as target architecture

This fixes command # make checkstack for i386/x86_64.
Looks like $UTS_MACHINE is exactly what scripts/ needs.

By default $UTS_MACHINE is equal to $ARCH, but some arch/${ARCH}/Makefile
overrides it. This patch updates it also in arch/x86/

broken in ffee0de ("x86: Default to ARCH=x86 to avoid overriding CONFIG_64BIT")

Signed-off-by: Konstantin Khlebnikov <>
 Makefile             |   11 +----------
 arch/x86/ |    2 ++
 2 files changed, 3 insertions(+), 10 deletions(-)

diff --git a/Makefile b/Makefile
index b0ee945..50fb690 100644
--- a/Makefile
+++ b/Makefile
@@ -1416,18 +1416,9 @@ endif #ifeq ($(mixed-targets),1)
 PHONY += checkstack kernelrelease kernelversion image_name
-# UML needs a little special treatment here.  It wants to use the host
-# toolchain, so needs $(SUBARCH) passed to  Everyone
-# else wants $(ARCH), including people doing cross-builds, which means
-# that $(SUBARCH) doesn't work here.
-ifeq ($(ARCH), um)
 	$(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \
-	$(PERL) $(src)/scripts/ $(CHECKSTACK_ARCH)
+	$(PERL) $(src)/scripts/ $(UTS_MACHINE)
 	@echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
diff --git a/arch/x86/ b/arch/x86/
index 36b62bc..8fc912b 100644
--- a/arch/x86/
+++ b/arch/x86/
@@ -3,6 +3,7 @@ core-y += arch/x86/crypto/
 ifeq ($(CONFIG_X86_32),y)
 START := 0x8048000
+UTS_MACHINE		:= i386
 LDFLAGS			+= -m elf_i386
 ELF_ARCH		:= i386
 ELF_FORMAT 		:= elf32-i386
@@ -47,6 +48,7 @@ KBUILD_AFLAGS += -m64
 LDFLAGS += -m elf_x86_64
+UTS_MACHINE := x86_64
 ELF_ARCH := i386:x86-64
 ELF_FORMAT := elf64-x86-64

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