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Date:   Mon, 21 Nov 2022 12:05:00 -0800
From:   Dave Hansen <dave.hansen@...el.com>
To:     Dexuan Cui <decui@...rosoft.com>, ak@...ux.intel.com,
        arnd@...db.de, bp@...en8.de, brijesh.singh@....com,
        dan.j.williams@...el.com, dave.hansen@...ux.intel.com,
        haiyangz@...rosoft.com, hpa@...or.com, jane.chu@...cle.com,
        kirill.shutemov@...ux.intel.com, kys@...rosoft.com,
        linux-arch@...r.kernel.org, linux-hyperv@...r.kernel.org,
        luto@...nel.org, mingo@...hat.com, peterz@...radead.org,
        rostedt@...dmis.org, sathyanarayanan.kuppuswamy@...ux.intel.com,
        seanjc@...gle.com, tglx@...utronix.de, tony.luck@...el.com,
        wei.liu@...nel.org, x86@...nel.org
Cc:     linux-kernel@...r.kernel.org
Subject: Re: [PATCH 5/6] x86/hyperv: Support hypercalls for TDX guests

>  #ifdef CONFIG_X86_64
> +#if CONFIG_INTEL_TDX_GUEST
> +	if (hv_isolation_type_tdx()) {

>  #ifdef CONFIG_X86_64
> +#if CONFIG_INTEL_TDX_GUEST
> +	if (hv_isolation_type_tdx())

>  #ifdef CONFIG_X86_64
> +#if CONFIG_INTEL_TDX_GUEST
> +	if (hv_isolation_type_tdx())
> +		return __tdx_ms_hv_hypercall(control, input2, input1);

See any common patterns there?

The "no #ifdef's in C files" rule would be good to apply here.  Please
do one #ifdef in a header.

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