[PATCH 5/6] virtio/scsi: verify device has config space

Some devices might not implement config space access (e.g. remoteproc used not to - before 3.9). virtio/scsi needs config space access so make it fail gracefully if not there. Signed-off-by: Michael S. Tsirkin m...@redhat.com --- drivers/scsi/virtio_scsi.c | 6 ++ 1 file changed, 6

Re: [PATCH 0/6] virtio: graceful failure with get == NULL

On Tue, Jan 13, 2015 at 04:43:07PM +0200, Michael S. Tsirkin wrote: virtio 1.0 says device configuration is optional, but most drivers treat it as mandatory. Even if presented by device, guest bios might disable the BAR holding that configuration, so we can't assume it's there, but we also

[PATCH 4/6] virtio/net: verify device has config space

Some devices might not implement config space access (e.g. remoteproc used not to - before 3.9). virtio/net needs config space access so make it fail gracefully if not there. Signed-off-by: Michael S. Tsirkin m...@redhat.com --- drivers/net/virtio_net.c | 6 ++ 1 file changed, 6

[PATCH 3/6] virtio/console: verify device has config space

Some devices might not implement config space access (e.g. remoteproc used not to - before 3.9). virtio/console needs config space access so make it fail gracefully if not there. Signed-off-by: Michael S. Tsirkin m...@redhat.com --- drivers/char/virtio_console.c | 6 ++ 1 file changed, 6

[PATCH 2/6] virtio/blk: verify device has config space

Some devices might not implement config space access (e.g. remoteproc used not to - before 3.9). virtio/blk needs config space access so make it fail gracefully if not there. Signed-off-by: Michael S. Tsirkin m...@redhat.com --- drivers/block/virtio_blk.c | 6 ++ 1 file changed, 6

[PATCH 6/6] virtio/balloon: verify device has config space

Some devices might not implement config space access (e.g. remoteproc used not to - before 3.9). virtio/balloon needs config space access so make it fail gracefully if not there. Signed-off-by: Michael S. Tsirkin m...@redhat.com --- drivers/virtio/virtio_balloon.c | 6 ++ 1 file changed, 6

[PATCH 0/6] virtio: graceful failure with get == NULL

virtio 1.0 says device configuration is optional, but most drivers treat it as mandatory. Even if presented by device, guest bios might disable the BAR holding that configuration, so we can't assume it's there, but we also don't want to fail if not in case drivers can cope with it's absence -

[PATCH 1/6] virtio/9p: verify device has config space

Some devices might not implement config space access (e.g. remoteproc used not to - before 3.9). virtio/9p needs config space access so make it fail gracefully if not there. Signed-off-by: Michael S. Tsirkin m...@redhat.com --- net/9p/trans_virtio.c | 6 ++ 1 file changed, 6 insertions(+)