linux-kernel - Re: [patch 6/7] x86/pci/mmcfg: Include 32/64 bit code into shared code

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Date:   Thu, 16 Mar 2017 17:25:31 -0700
From:   Andi Kleen <ak@...ux.intel.com>
To:     Thomas Gleixner <tglx@...utronix.de>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Bjorn Helgaas <helgaas@...nel.org>, x86@...nel.org,
        Peter Anvin <hpa@...or.com>, Borislav Petkov <bp@...en8.de>,
        Peter Zijlstra <peterz@...radead.org>,
        Stephane Eranian <eranian@...gle.com>
Subject: Re: [patch 6/7] x86/pci/mmcfg: Include 32/64 bit code into shared
 code

> --- a/arch/x86/pci/mmconfig-shared.c
> +++ b/arch/x86/pci/mmconfig-shared.c
> @@ -24,6 +24,12 @@
>  
>  #define PREFIX "PCI: "
>  
> +#ifdef CONFIG_X86_64
> +# include "mmconfig_64.c"
> +#else
> +# include "mmconfig_32.c"
> +#endif

This seems like a bad hack. If you want to access something from
multiple files just make it global, don't play preprocessor tricks.

-Andi