Subject: Re: [PATCH v1 16/16] nvme-pci: unmap MMIO pages with appropriate interface

From: Jason Gunthorpe <[email-masked]>
Date: Thu, 7 Aug 2025 10:45:33 -0300

On Mon, Aug 04, 2025 at 03:42:50PM +0300, Leon Romanovsky wrote:
> From: Leon Romanovsky <[email-masked]>
> 
> Block layer maps MMIO memory through dma_map_phys() interface
> with help of DMA_ATTR_MMIO attribute. There is a need to unmap
> that memory with the appropriate unmap function.

Be specific, AFIACT the issue is that on dma_ops platforms the map
will call ops->map_resource for ATTR_MMIO so we must have the unmap
call ops->unmap_resournce

Maybe these patches should be swapped then, as adding ATTR_MMIO seems
like it created this issue?

Jason