Christoph Hellwig <hch@xxxxxx> writes: > On Fri, May 31, 2024 at 12:28:21AM +1000, Michael Ellerman wrote: >> No that's wrong. The actual hardware page size is 4K, but >> CONFIG_PAGE_SIZE and PAGE_SHIFT etc. is 64K. >> >> So at least for this user the driver used to work with 64K pages, and >> now doesn't. > > Which suggested that the communicated max_hw_sectors is wrong, and > previously we were saved by the block layer increasing it to > PAGE_SIZE after a warning. Should we just increment it to 64k? It looks like that user actually only has the CDROM hanging off pata_macio, so it's possible it has been broken previously and they didn't notice. I'll see if they can confirm the CDROM has been working up until now. I can test the CDROM on my G5 next week. cheers
