linux-kernel - Re: [PATCH] KVM: selftests: Fix "make ARCH=x86

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Date:   Fri, 5 Jun 2020 17:15:40 +0200
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     Vitaly Kuznetsov <vkuznets@...hat.com>, kvm@...r.kernel.org
Cc:     Sean Christopherson <sean.j.christopherson@...el.com>,
        Wanpeng Li <wanpengli@...cent.com>,
        Jim Mattson <jmattson@...gle.com>,
        Marcelo Bandeira Condotta <mcondotta@...hat.com>,
        Shuah Khan <skhan@...uxfoundation.org>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] KVM: selftests: Fix "make ARCH=x86_64" build with

On 05/06/20 16:20, Vitaly Kuznetsov wrote:
> Marcelo reports that kvm selftests fail to build with
> "make ARCH=x86_64":
> 
> gcc -Wall -Wstrict-prototypes -Wuninitialized -O2 -g -std=gnu99
>  -fno-stack-protector -fno-PIE -I../../../../tools/include
>  -I../../../../tools/arch/x86_64/include  -I../../../../usr/include/
>  -Iinclude -Ilib -Iinclude/x86_64 -I.. -c lib/kvm_util.c
>  -o /var/tmp/20200604202744-bin/lib/kvm_util.o
> 
> In file included from lib/kvm_util.c:11:
> include/x86_64/processor.h:14:10: fatal error: asm/msr-index.h: No such
>  file or directory
> 
>  #include <asm/msr-index.h>
>           ^~~~~~~~~~~~~~~~~
> compilation terminated.
> 
> "make ARCH=x86", however, works. The problem is that arch specific headers
> for x86_64 live in 'tools/arch/x86/include', not in
> 'tools/arch/x86_64/include'.
> 
> Fixes: 66d69e081b52 ("selftests: fix kvm relocatable native/cross builds and installs")
> Reported-by: Marcelo Bandeira Condotta <mcondotta@...hat.com>
> Signed-off-by: Vitaly Kuznetsov <vkuznets@...hat.com>
> ---
>  tools/testing/selftests/kvm/Makefile | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/tools/testing/selftests/kvm/Makefile b/tools/testing/selftests/kvm/Makefile
> index b4ff112e5c7e..4a166588d99f 100644
> --- a/tools/testing/selftests/kvm/Makefile
> +++ b/tools/testing/selftests/kvm/Makefile
> @@ -83,7 +83,11 @@ LIBKVM += $(LIBKVM_$(UNAME_M))
>  INSTALL_HDR_PATH = $(top_srcdir)/usr
>  LINUX_HDR_PATH = $(INSTALL_HDR_PATH)/include/
>  LINUX_TOOL_INCLUDE = $(top_srcdir)/tools/include
> +ifeq ($(ARCH),x86_64)
> +LINUX_TOOL_ARCH_INCLUDE = $(top_srcdir)/tools/arch/x86/include
> +else
>  LINUX_TOOL_ARCH_INCLUDE = $(top_srcdir)/tools/arch/$(ARCH)/include
> +endif
>  CFLAGS += -Wall -Wstrict-prototypes -Wuninitialized -O2 -g -std=gnu99 \
>  	-fno-stack-protector -fno-PIE -I$(LINUX_TOOL_INCLUDE) \
>  	-I$(LINUX_TOOL_ARCH_INCLUDE) -I$(LINUX_HDR_PATH) -Iinclude \
> 

Queued, thanks.

Paolo