tree eb5596d07fb488d7ff10e2a17ca87578b645e049
parent ca14d9eded5aa786675b28ba1d9c06bde33182f6
author Jean-Philippe Brucker <jean-philippe.brucker@arm.com> 1554384043 +0100
committer Will Deacon <will.deacon@arm.com> 1556287079 +0100

virtio/blk: Set VIRTIO_BLK_F_RO when the disk is read-only

Since we don't currently tell the guest when the disk backend is
read-only, it will report any inconsistent read after write as an error.
An image may be read-only either because user requested it on the
command-line, or because write support isn't implemented. Pass the
read-only attribute using the VIRTIO_BLK_F_RO feature.

Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Jean-Philippe Brucker <jean-philippe.brucker@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>