Il 16/05/2012 12:54, Paolo Bonzini ha scritto: > Previous versions of these patches have been posted already, but they > were lost. Sorry for realizing this quite late. > > VIRTIO_BLK_F_SCSI is supposed to mean whether the host can *parse* > SCSI requests, not *execute* them. So it should always be enabled, > and the scsi=on/off property tied to a separate configuration variable > that is not guest visible. > > With this change, Linux has problems understanding failed requests, so > patch 1 works around the Linux bugs. > > Important: because we need to do this to fix a migration compatibility > problem when QEMU might be invoked with an old machine type, we must do > this unconditionally. This more or less assumes that no one ever invoked > QEMU with scsi=off, as it breaks migration from new QEMU, scsi=off to > old QEMU, also scsi=off. However new->old is not supported upstream. > > S390 compile-tested only. > > Paolo Bonzini (4): > virtio-blk: report non-zero status when failing SG_IO requests > virtio-blk: blockdev_mark_auto_del is transport-independent > virtio-blk: define VirtIOBlkConf > virtio-blk: always enable VIRTIO_BLK_F_SCSI > > hw/s390-virtio-bus.c | 10 ++++--- > hw/s390-virtio-bus.h | 4 +-- > hw/virtio-blk.c | 80 > ++++++++++++++++++++++++-------------------------- > hw/virtio-blk.h | 14 +++++---- > hw/virtio-pci.c | 11 +++---- > hw/virtio-pci.h | 4 +-- > hw/virtio.h | 4 +-- > 7 files changed, 64 insertions(+), 63 deletions(-) >
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