linux-kernel - Re: [PATCH v1 1/2] iommu/vt-d: Move intel_iommu

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Message-ID: <82f7dc54-2f34-7f69-add6-fca929d1acd1@linux.intel.com>
Date:   Fri, 8 Oct 2021 12:34:57 +0800
From:   Lu Baolu <baolu.lu@...ux.intel.com>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc:     baolu.lu@...ux.intel.com, Joerg Roedel <jroedel@...e.de>,
        iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org,
        David Woodhouse <dwmw2@...radead.org>,
        Joerg Roedel <joro@...tes.org>, Will Deacon <will@...nel.org>
Subject: Re: [PATCH v1 1/2] iommu/vt-d: Move intel_iommu_ops to header file

Hi Andy,

On 10/7/21 12:14 AM, Andy Shevchenko wrote:
> On Fri, Jul 30, 2021 at 10:20:08AM +0800, Lu Baolu wrote:
>> Hi Andy,
>>
>> On 7/30/21 12:35 AM, Andy Shevchenko wrote:
>>> Compiler is not happy about hidden declaration of intel_iommu_ops.
>>>
>>> .../drivers/iommu/intel/iommu.c:414:24: warning: symbol 'intel_iommu_ops' was not declared. Should it be static?
>>>
>>> Move declaration to header file to make compiler happy.
>>
>> Thanks for the cleanup. Sharing data structures between different files
>> doesn't seem to be a good design. How about adding a helper so that the
>> intel_iommu_ops could be a static one?
> 
> I don't see any change in the upstream. What's the plan?
> Can we take my patch as a quick fix?
> 

Thanks for the reminding.

Can you please tell in which kernel configuration could above warning
be triggered?

Best regards,
baolu