From: Rob Herring <robh@kernel.org>
To: Robin Murphy <robin.murphy@arm.com>
Cc: linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org,
frowand.list@gmail.com, james.quinlan@broadcom.com,
m.szyprowski@samsung.com, hch@lst.de, devicetree@vger.kernel.org,
lenb@kernel.org, robh+dt@kernel.org, rafael@kernel.org,
iommu@lists.linux.dev
Subject: Re: [PATCH] dma-mapping: Don't store redundant offsets
Date: Mon, 27 Nov 2023 15:41:12 -0600 [thread overview]
Message-ID: <170112126999.3795360.2028083328309296729.robh@kernel.org> (raw)
In-Reply-To: <94e0cec15546ef2be61d90869e499e40e2a55308.1700849106.git.robin.murphy@arm.com>
On Fri, 24 Nov 2023 18:10:03 +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.
>
> Signed-off-by: Robin Murphy <robin.murphy@arm.com>
> ---
> drivers/acpi/scan.c | 1 -
> drivers/of/address.c | 1 -
> include/linux/dma-direct.h | 19 ++++++++++++-------
> kernel/dma/direct.c | 1 -
> 4 files changed, 12 insertions(+), 10 deletions(-)
>
Acked-by: Rob Herring <robh@kernel.org>
next prev parent reply other threads:[~2023-11-27 21:41 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-11-24 18:10 [PATCH] dma-mapping: Don't store redundant offsets Robin Murphy
2023-11-27 7:22 ` Christoph Hellwig
2023-11-27 21:41 ` Rob Herring [this message]
2023-12-15 11:30 ` Christoph Hellwig
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