linux-kernel - Re: [RFC PATCH v6 017/104] KVM: TDX: Add C wrapper functions for SEAMCALLs to the TDX module

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Message-ID: <16632b27-7a0d-887b-c86e-9e1673840f55@intel.com>
Date:   Fri, 6 May 2022 16:56:52 +0800
From:   Xiaoyao Li <xiaoyao.li@...el.com>
To:     isaku.yamahata@...el.com, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     isaku.yamahata@...il.com, Paolo Bonzini <pbonzini@...hat.com>,
        erdemaktas@...gle.com, Sean Christopherson <seanjc@...gle.com>,
        Sagi Shahar <sagis@...gle.com>
Subject: Re: [RFC PATCH v6 017/104] KVM: TDX: Add C wrapper functions for
 SEAMCALLs to the TDX module

On 5/6/2022 2:14 AM, isaku.yamahata@...el.com wrote:
> diff --git a/arch/x86/virt/vmx/tdx/seamcall.S b/arch/x86/virt/vmx/tdx/seamcall.S
> index 8df7a16f7685..b4fc8182e1cf 100644
> --- a/arch/x86/virt/vmx/tdx/seamcall.S
> +++ b/arch/x86/virt/vmx/tdx/seamcall.S
> @@ -50,3 +50,4 @@ SYM_FUNC_START(__seamcall)
>   	FRAME_END
>   	ret
>   SYM_FUNC_END(__seamcall)
> +EXPORT_SYMBOL_GPL(__seamcall)

It cannot compile, we need

#include <asm/export.h>