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Subject[PATCH] x86: correctly set UTS_MACHINE for "make ARCH=x86"
Upon request I have updated the patch description
and hope it is now more explanatory.

IMHO this should go into 2.6.24.
BTW, the patch was tested with v2.6.24-rc3-19-g2ffbb83.



x86: correctly set UTS_MACHINE for "make ARCH=x86"

For a kernel built with "make ARCH=x86" the following system
information is displayed when running the new kernel

$ uname -m

On some i386 systems (e.g. K7) we even have the following information

$ uname -m

This is weird. The usual information for "uname -m" should be "x86_64"
on 64-bit and "i386" or "i686" on 32-bit.

This patch fixes the issue by setting UTS_MACHINE to "i386" for 32-bit
kernel builds and to "x86_64" for 64-bit kernel builds. I.e., "x86"
won't be used for UTS_MACHINE anymore.

Cc: Thomas Gleixner <>
Cc: Ingo Molnar <>
Cc: "H. Peter Anvin" <>
Acked-by: Sam Ravnborg <>
Signed-off-by: Andreas Herrmann <>

arch/x86/Makefile | 5 ++---
1 files changed, 2 insertions(+), 3 deletions(-)

diff --git a/arch/x86/Makefile b/arch/x86/Makefile
index 116b03a..7aa1dc6 100644
--- a/arch/x86/Makefile
+++ b/arch/x86/Makefile
@@ -11,10 +11,9 @@ endif
$(srctree)/arch/x86/Makefile%: ;

ifeq ($(CONFIG_X86_32),y)
+ UTS_MACHINE := i386
include $(srctree)/arch/x86/Makefile_32
+ UTS_MACHINE := x86_64
include $(srctree)/arch/x86/Makefile_64

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