linux-kernel - Re: [PATCH] dma-mapping: Don't store redundant offsets

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Message-ID: <20231127072240.GA28430@lst.de>
Date:   Mon, 27 Nov 2023 08:22:40 +0100
From:   Christoph Hellwig <hch@....de>
To:     Robin Murphy <robin.murphy@....com>
Cc:     hch@....de, rafael@...nel.org, lenb@...nel.org, robh+dt@...nel.org,
        frowand.list@...il.com, m.szyprowski@...sung.com,
        james.quinlan@...adcom.com, iommu@...ts.linux.dev,
        linux-acpi@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] dma-mapping: Don't store redundant offsets

On Fri, Nov 24, 2023 at 06:10:03PM +0000, Robin Murphy wrote:
> A bus_dma_region necessarily stores both CPU and DMA base addresses for
> a range, so there's no need to also store the difference between them.

Yes.  I'll add this to the for-next branch for 6.8 once I open it.