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Date: Tue, 23 Apr 2024 10:57:56 +0100
From: Catalin Marinas <catalin.marinas@arm.com>
To: Robin Murphy <robin.murphy@arm.com>
Cc: Joerg Roedel <joro@8bytes.org>, Christoph Hellwig <hch@lst.de>,
	Vineet Gupta <vgupta@kernel.org>,
	Russell King <linux@armlinux.org.uk>, Will Deacon <will@kernel.org>,
	Huacai Chen <chenhuacai@kernel.org>,
	WANG Xuerui <kernel@xen0n.name>,
	Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
	Paul Walmsley <paul.walmsley@sifive.com>,
	Palmer Dabbelt <palmer@dabbelt.com>,
	Albert Ou <aou@eecs.berkeley.edu>,
	Lorenzo Pieralisi <lpieralisi@kernel.org>,
	Hanjun Guo <guohanjun@huawei.com>,
	Sudeep Holla <sudeep.holla@arm.com>,
	"K. Y. Srinivasan" <kys@microsoft.com>,
	Haiyang Zhang <haiyangz@microsoft.com>,
	Wei Liu <wei.liu@kernel.org>, Dexuan Cui <decui@microsoft.com>,
	Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>,
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	Frank Rowand <frowand.list@gmail.com>,
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	Jason Gunthorpe <jgg@ziepe.ca>, linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org, linux-acpi@vger.kernel.org,
	iommu@lists.linux.dev, devicetree@vger.kernel.org,
	Jason Gunthorpe <jgg@nvidia.com>
Subject: Re: [PATCH v4 6/7] iommu/dma: Centralise iommu_setup_dma_ops()
Message-ID: <ZieGJJYXS6LoO_VZ@arm.com>
References: <cover.1713523152.git.robin.murphy@arm.com>
 <bebea331c1d688b34d9862eefd5ede47503961b8.1713523152.git.robin.murphy@arm.com>
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In-Reply-To: <bebea331c1d688b34d9862eefd5ede47503961b8.1713523152.git.robin.murphy@arm.com>

On Fri, Apr 19, 2024 at 05:54:45PM +0100, Robin Murphy wrote:
> diff --git a/arch/arm64/mm/dma-mapping.c b/arch/arm64/mm/dma-mapping.c
> index 61886e43e3a1..313d8938a2f0 100644
> --- a/arch/arm64/mm/dma-mapping.c
> +++ b/arch/arm64/mm/dma-mapping.c
> @@ -58,8 +58,6 @@ void arch_setup_dma_ops(struct device *dev, u64 dma_base, u64 size,
>  		   ARCH_DMA_MINALIGN, cls);
>  
>  	dev->dma_coherent = coherent;
> -	if (device_iommu_mapped(dev))
> -		iommu_setup_dma_ops(dev, dma_base, dma_base + size - 1);
>  
>  	xen_setup_dma_ops(dev);
>  }

In case you need an ack for the arm64 changes:

Acked-by: Catalin Marinas <catalin.marinas@arm.com>