linux-kernel - Re: [PATCH 1/2] ia64: Hide the archdata.iommu field behind generic IOMMU

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Date:   Wed, 27 May 2020 16:45:21 +0200
From:   Joerg Roedel <joro@...tes.org>
To:     Krzysztof Kozlowski <krzk@...nel.org>
Cc:     Tony Luck <tony.luck@...el.com>, Fenghua Yu <fenghua.yu@...el.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        x86@...nel.org, "H. Peter Anvin" <hpa@...or.com>,
        linux-ia64@...r.kernel.org, linux-kernel@...r.kernel.org,
        iommu@...ts.linux-foundation.org
Subject: Re: [PATCH 1/2] ia64: Hide the archdata.iommu field behind generic
 IOMMU_API

On Mon, May 18, 2020 at 02:08:54PM +0200, Krzysztof Kozlowski wrote:
> There is a generic, kernel wide configuration symbol for enabling the
> IOMMU specific bits: CONFIG_IOMMU_API.  Implementations (including
> INTEL_IOMMU driver) select it so use it here as well.
> 
> This makes the conditional archdata.iommu field consistent with other
> platforms and also fixes any compile test builds of other IOMMU drivers,
> when INTEL_IOMMU is not selected).
> 
> For the case when INTEL_IOMMU and COMPILE_TEST are not selected, this
> should create functionally equivalent code/choice.  With COMPILE_TEST
> this field could appear if other IOMMU drivers are chosen but
> INTEL_IOMMU not.
> 
> Reported-by: kbuild test robot <lkp@...el.com>
> Signed-off-by: Krzysztof Kozlowski <krzk@...nel.org>
> 
> ---
> 
> See:
> https://lore.kernel.org/lkml/202005181412.frC4juFy%25lkp@intel.com/
> ---
>  arch/ia64/include/asm/device.h | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

Applied both to iommu/fixes.