linux-kernel - Re: [PATCHv6 03/30] x86/tdx: Add __tdx_module_call() and __tdx

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Message-ID: <87ilsd31lw.ffs@tglx>
Date:   Thu, 17 Mar 2022 00:43:23 +0100
From:   Thomas Gleixner <tglx@...utronix.de>
To:     "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
        mingo@...hat.com, bp@...en8.de, dave.hansen@...el.com,
        luto@...nel.org, peterz@...radead.org
Cc:     sathyanarayanan.kuppuswamy@...ux.intel.com, aarcange@...hat.com,
        ak@...ux.intel.com, dan.j.williams@...el.com, david@...hat.com,
        hpa@...or.com, jgross@...e.com, jmattson@...gle.com,
        joro@...tes.org, jpoimboe@...hat.com, knsathya@...nel.org,
        pbonzini@...hat.com, sdeep@...are.com, seanjc@...gle.com,
        tony.luck@...el.com, vkuznets@...hat.com, wanpengli@...cent.com,
        thomas.lendacky@....com, brijesh.singh@....com, x86@...nel.org,
        linux-kernel@...r.kernel.org,
        "Kirill A . Shutemov" <kirill.shutemov@...ux.intel.com>,
        Dave Hansen <dave.hansen@...ux.intel.com>
Subject: Re: [PATCHv6 03/30] x86/tdx: Add __tdx_module_call() and
 __tdx_hypercall() helper functions

On Wed, Mar 16 2022 at 05:08, Kirill A. Shutemov wrote:
> +/*
> + * Wrapper for standard use of __tdx_hypercall with no output aside from
> + * return code.
> + */
> +static inline u64 _tdx_hypercall(u64 fn, u64 r12, u64 r13, u64 r14, u64 r15)
> +{
> +	struct tdx_hypercall_args args = {
> +		.r10 = TDX_HYPERCALL_STANDARD,
> +		.r11 = fn,
> +		.r12 = r12,
> +		.r13 = r13,
> +		.r14 = r14,
> +		.r15 = r15,
> +	};
> +
> +	return __tdx_hypercall(&args, 0);
> +}
> +
> +/* Called from __tdx_hypercall() for unrecoverable failure */
> +void __tdx_hypercall_failed(void)
> +{
> +	panic("TDVMCALL failed. TDX module bug?");
> +}
>  void __init tdx_early_init(void)

Lacks a new line before tdx_early_init().

Other than that:

Reviewed-by: Thomas Gleixner <tglx@...utronix.de>