linux-kernel - Re: [PATCH 2/2] drivers/arm-smmu-v3: Implement .iotlb_sync

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Message-ID: <20250929115803.GF2617119@nvidia.com>
Date: Mon, 29 Sep 2025 08:58:03 -0300
From: Jason Gunthorpe <jgg@...dia.com>
To: Daniel Mentz <danielmentz@...gle.com>
Cc: iommu@...ts.linux.dev, linux-kernel@...r.kernel.org,
	Will Deacon <will@...nel.org>, Mostafa Saleh <smostafa@...gle.com>,
	Pranjal Shrivastava <praan@...gle.com>,
	Liviu Dudau <liviu.dudau@....com>,
	Rob Clark <robin.clark@....qualcomm.com>
Subject: Re: [PATCH 2/2] drivers/arm-smmu-v3: Implement .iotlb_sync_map
 callback

On Sat, Sep 27, 2025 at 10:39:53PM +0000, Daniel Mentz wrote:
> @@ -3700,6 +3713,7 @@ static const struct iommu_ops arm_smmu_ops = {
>  		.map_pages		= arm_smmu_map_pages,
>  		.unmap_pages		= arm_smmu_unmap_pages,
>  		.flush_iotlb_all	= arm_smmu_flush_iotlb_all,
> +		.iotlb_sync_map		= arm_smmu_iotlb_sync_map,

Shouldn't this avoid defining the op on coherent systems?

Jason