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Date:   Tue, 22 Nov 2022 10:06:37 +0100
From:   Peter Zijlstra <peterz@infradead.org>
To:     Kai Huang <kai.huang@intel.com>
Cc:     linux-kernel@vger.kernel.org, kvm@vger.kernel.org,
        linux-mm@kvack.org, seanjc@google.com, pbonzini@redhat.com,
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        ying.huang@intel.com, reinette.chatre@intel.com,
        len.brown@intel.com, tony.luck@intel.com, ak@linux.intel.com,
        isaku.yamahata@intel.com, chao.gao@intel.com,
        sathyanarayanan.kuppuswamy@linux.intel.com, bagasdotme@gmail.com,
        sagis@google.com, imammedo@redhat.com
Subject: Re: [PATCH v7 05/20] x86/virt/tdx: Implement functions to make
 SEAMCALL
Message-ID: <Y3yRHf982s/tNlvC@hirez.programming.kicks-ass.net>
References: <cover.1668988357.git.kai.huang@intel.com>
 <5977ec3c2e682e6927ce1c33e7fcac7fcfe2d346.1668988357.git.kai.huang@intel.com>
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On Mon, Nov 21, 2022 at 01:26:27PM +1300, Kai Huang wrote:
> +/*
> + * Wrapper of __seamcall() to convert SEAMCALL leaf function error code
> + * to kernel error code.  @seamcall_ret and @out contain the SEAMCALL
> + * leaf function return code and the additional output respectively if
> + * not NULL.
> + */
> +static int __always_unused seamcall(u64 fn, u64 rcx, u64 rdx, u64 r8, u64 r9,
> +				    u64 *seamcall_ret,
> +				    struct tdx_module_output *out)
> +{

What's the point of a 'static __always_unused' function again? Other
than to test the DCE pass of a linker, that is?