linux-kernel - Re: [PATCH 3/9] iommu/dma-iommu: Add iommu_dma_copy_reserved_iova, iommu_dma_apply_resv

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Message-ID: <20190415063134.GB1377@infradead.org>
Date:   Sun, 14 Apr 2019 23:31:34 -0700
From:   Christoph Hellwig <hch@...radead.org>
To:     Tom Murphy <tmurphy@...sta.com>
Cc:     iommu@...ts.linux-foundation.org, Heiko Stuebner <heiko@...ech.de>,
        Will Deacon <will.deacon@....com>,
        David Brown <david.brown@...aro.org>,
        linux-samsung-soc@...r.kernel.org, dima@...sta.com,
        Krzysztof Kozlowski <krzk@...nel.org>,
        linux-rockchip@...ts.infradead.org, Kukjin Kim <kgene@...nel.org>,
        Andy Gross <andy.gross@...aro.org>,
        Marc Zyngier <marc.zyngier@....com>,
        linux-arm-msm@...r.kernel.org, linux-mediatek@...ts.infradead.org,
        Matthias Brugger <matthias.bgg@...il.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        murphyt7@....ie, Robin Murphy <robin.murphy@....com>
Subject: Re: [PATCH 3/9] iommu/dma-iommu: Add iommu_dma_copy_reserved_iova,
 iommu_dma_apply_resv_region to the dma-iommu api

On Thu, Apr 11, 2019 at 07:47:32PM +0100, Tom Murphy via iommu wrote:
> +
> +	WARN_ON_ONCE(iommu_dma_reserve_iova(domain, region->start, end) == NULL);

Overly long line..