When a device model's I/O operation fails, we execute the error action. This lets layers above QEMU implement thin provisioning, or attempt to correct errors before they reach the guest. But when the I/O operation fails because its invalid, reporting the error to the guest is the only sensible action.
This short series does exactly that for virtio-blk. I intend to do the same for IDE and SCSI. Markus Armbruster (3): virtio-blk: Factor common checks out of virtio_blk_handle_read/write() virtio-blk: Bypass error action and I/O accounting on invalid r/w virtio-blk: Treat read/write beyond end as invalid hw/block/virtio-blk.c | 45 +++++++++++++++++++++++++++++---------------- 1 file changed, 29 insertions(+), 16 deletions(-) -- 1.9.3
