[dm-devel] AMD-Vi IO_PAGE_FAULTs and ata3.00: failed command: READ FPDMA QUEUED errors since Linux 4.0

[Joerg Roedel]

On Sun, Aug 02, 2015 at 08:48:06PM +0200, Andreas Hartmann wrote:
> >>https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=34b48db66e08ca1c1bc07cf305d672ac940268dc
> >>
> >>block: remove artifical max_hw_sectors cap

Looking at the patch, it seems to me that it just uncovered a bug
elsewhere. It looks like an underlying driver doesn't expect the
big io-requests that the patch enables and does not dma-map the whole
target buffer, causing the IO_PAGE_FAULTs later.


	Joerg