linux-kernel - Re: [PATCHv4 01/30] x86/mm: Fix warning on build with X86_MEM

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Message-ID: <08891245-7a08-ca57-4ab7-b2fdefacc712@intel.com>
Date:   Thu, 24 Feb 2022 08:06:22 -0800
From:   Dave Hansen <dave.hansen@...el.com>
To:     "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
        tglx@...utronix.de, mingo@...hat.com, bp@...en8.de,
        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, David Rientjes <rientjes@...gle.com>
Subject: Re: [PATCHv4 01/30] x86/mm: Fix warning on build with
 X86_MEM_ENCRYPT=y

On 2/24/22 07:56, Kirill A. Shutemov wrote:
> So far, AMD_MEM_ENCRYPT is the only user of X86_MEM_ENCRYPT. TDX will be
> the second. It will make mem_encrypt.c build without AMD_MEM_ENCRYPT,
> which triggers a warning:
> 
> arch/x86/mm/mem_encrypt.c:69:13: warning: no previous prototype for
> 	function 'mem_encrypt_init' [-Wmissing-prototypes]
> 
> Fix it by moving mem_encrypt_init() declaration outside of #ifdef
> CONFIG_AMD_MEM_ENCRYPT.
> 
> Signed-off-by: Kirill A. Shutemov <kirill.shutemov@...ux.intel.com>
> Fixes: 20f07a044a76 ("x86/sev: Move common memory encryption code to mem_encrypt.c")
> Acked-by: David Rientjes <rientjes@...gle.com>

Hey Kirill,

The last time you posted this, I ack'd it:

Acked-by: Dave Hansen <dave.hansen@...ux.intel.com>

but that didn't make it into this version.  It saves me the trouble of
looking through this patch again when I was fine with it last week.

The ack still stands if you're interested in incorporating it. ;)