Re: [RFC PATCH] dma-iommu: Add iommu_dma_max_mapping_size()

[Christoph Hellwig]

On Tue, May 17, 2022 at 10:02:00AM +0100, John Garry wrote:
> BTW, on a separate topic, I noticed that even with this change my ATA 
> devices have max_hw_sectors_kb of 32767, as opposed to 128 for SAS devices. 
> It seems that libata-scsi - specifically ata_scsi_dev_config() - doesn't 
> honour the shost max_sectors limit. I guess that is not intentional.

I don't think it is.  the libsas/libsata integration is a bit messy
sometimes..