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Date:	Thu, 23 Oct 2014 09:06:58 -0400
From:	Christopher Covington <>
To:	Michael Ellerman <>
CC:,,, Andrew Morton <>,
Subject: Re: [PATCH 3/3] selftests/kcmp: Always try to build the test

Hi Michael,

On 10/23/2014 01:07 AM, Michael Ellerman wrote:
> Don't prevent the test building on non-x86. Just try and build it and
> let the chips fall where they may.

As a user of kcmp via CRIU on arm and arm64, thanks!

> diff --git a/tools/testing/selftests/kcmp/Makefile b/tools/testing/selftests/kcmp/Makefile
> index 4f00c0524501..cda9cc4004c9 100644
> --- a/tools/testing/selftests/kcmp/Makefile
> +++ b/tools/testing/selftests/kcmp/Makefile
> @@ -1,21 +1,7 @@
> -uname_M := $(shell uname -m 2>/dev/null || echo not)
> -ARCH ?= $(shell echo $(uname_M) | sed -e s/i.86/i386/)
> -ifeq ($(ARCH),i386)
> -        ARCH := x86
> -	CFLAGS := -DCONFIG_X86_32 -D__i386__
> -endif
> -ifeq ($(ARCH),x86_64)
> -	ARCH := x86
> -	CFLAGS := -DCONFIG_X86_64 -D__x86_64__
> -endif
>  CFLAGS += -I../../../../usr/include/
>  all:
> -ifeq ($(ARCH),x86)
>  	gcc $(CFLAGS) kcmp_test.c -o kcmp_test

Not that this needs to be addressed in this patch, but this looks broken for
cross compilation. It looks like some of the other selftests use:


But perhaps this should be set (and perhaps with ':=') once at the top level.


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