linux-kernel - Re: [PATCH 02/11] iommu/vt-d: Optimize iotlb_sync

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Message-ID: <20250718132912.GC2250220@nvidia.com>
Date: Fri, 18 Jul 2025 10:29:12 -0300
From: Jason Gunthorpe <jgg@...dia.com>
To: Baolu Lu <baolu.lu@...ux.intel.com>
Cc: Joerg Roedel <joro@...tes.org>, iommu@...ts.linux.dev,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 02/11] iommu/vt-d: Optimize iotlb_sync_map for
 non-caching/non-RWBF modes

On Fri, Jul 18, 2025 at 10:56:24AM +0800, Baolu Lu wrote:

> How about the following changes (compiled but not tested)?

Yes, exactly what I was thinking!

That leaves the cache tag linked list race..

Nicolin is working on a neat solution for SMMU I wonder if we can
reuse it here too..

Jason