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Date:   Wed, 7 Sep 2022 05:07:13 -0700
From:   Christoph Hellwig <hch@infradead.org>
To:     Oded Gabbay <ogabbay@kernel.org>
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Subject: Re: [PATCH v2 4/4] vfio/pci: Allow MMIO regions to be exported
 through dma-buf
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On Tue, Sep 06, 2022 at 10:44:45PM +0300, Oded Gabbay wrote:
> Regardless, it seems we can remove it from the calls to
> dma_map_resource. I went over the kernel code and it seems only habana
> and amdgpu (and amdkfd) are passing this property to dma_map_resource.
> All other callers just pass 0.

What really need to happen is a revert of that entire commit, given that
dma_map_resource must not be used for PCIe P2P transactions as explained
in my previous mail.