On Thu, Jul 25, 2019 at 01:53:49PM +0200, Auger Eric wrote: > I am confused: if vring_use_dma_api() returns false if the dma_mask is > unset (ie. vring_use_dma_api() returns false), the virtio-blk-pci device > will not be able to get translated addresses and won't work properly. > > The patch above allows the dma api to be used and only influences the > max_segment_size and it works properly. > > So is it normal the dma_mask is unset in my case?
Its not normal. I assume you use virtio-nmio? Due to the mess with the dma_mask being a pointer a lot of subsystems forgot to set a dma mask up, and oddly enough seem to mostly get away with it. _______________________________________________ Virtualization mailing list Virtualization@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/virtualization
