similar to: [PATCH v6 14/46] virtio: add legacy feature table support

virtio-blk has some legacy feature bits that modern drivers must not negotiate, but are needed for old legacy hosts (that e.g. don't support virtio-scsi). Allow a separate legacy feature table for such cases. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- include/linux/virtio.h | 4 ++++ drivers/virtio/virtio.c | 25 ++++++++++++++++++++++++- 2 files changed, 28

virtio-blk has some legacy feature bits that modern drivers must not negotiate, but are needed for old legacy hosts (that e.g. don't support virtio-scsi). Allow a separate legacy feature table for such cases. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- include/linux/virtio.h | 4 ++++ drivers/virtio/virtio.c | 25 ++++++++++++++++++++++++- 2 files changed, 28

virtio-blk has some legacy feature bits that modern drivers must not negotiate, but are needed for old legacy hosts (that e.g. don't support virtio-scsi). Allow a separate legacy feature table for such cases. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> Reviewed-by: Cornelia Huck <cornelia.huck at de.ibm.com> --- include/linux/virtio.h | 4 ++++ drivers/virtio/virtio.c

virtio-blk has some legacy feature bits that modern drivers must not negotiate, but are needed for old legacy hosts (that e.g. don't support virtio-scsi). Allow a separate legacy feature table for such cases. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> Reviewed-by: Cornelia Huck <cornelia.huck at de.ibm.com> --- include/linux/virtio.h | 4 ++++ drivers/virtio/virtio.c

virtio-blk has some legacy feature bits that modern drivers must not negotiate, but are needed for old legacy hosts (that e.g. don't support virtio-scsi). Allow a separate legacy feature table for such cases. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- include/linux/virtio.h | 4 ++++ drivers/virtio/virtio.c | 25 ++++++++++++++++++++++++- 2 files changed, 28

virtio-blk has some legacy feature bits that modern drivers must not negotiate, but are needed for old legacy hosts (that e.g. don't support virtio-scsi). Allow a separate legacy feature table for such cases. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- include/linux/virtio.h | 4 ++++ drivers/virtio/virtio.c | 25 ++++++++++++++++++++++++- 2 files changed, 28

virtio blk has some legacy feature bits that modern drivers must not negotiate, but are needed for old legacy hosts (e.g. that dn't support virtio scsi). Allow a separate legacy feature table for such cases. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- include/linux/virtio.h | 4 ++++ drivers/virtio/virtio.c | 25 ++++++++++++++++++++++++- 2 files changed, 28

virtio blk has some legacy feature bits that modern drivers must not negotiate, but are needed for old legacy hosts (e.g. that dn't support virtio scsi). Allow a separate legacy feature table for such cases. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- include/linux/virtio.h | 4 ++++ drivers/virtio/virtio.c | 25 ++++++++++++++++++++++++- 2 files changed, 28

virtio blk has some legacy feature bits that modern drivers must not negotiate, but are needed for old legacy hosts (e.g. that dn't support virtio scsi). Allow a separate legacy feature table for such cases. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- include/linux/virtio.h | 4 ++++ drivers/virtio/virtio.c | 25 ++++++++++++++++++++++++- 2 files changed, 28

virtio blk has some legacy feature bits that modern drivers must not negotiate, but are needed for old legacy hosts (e.g. that dn't support virtio scsi). Allow a separate legacy feature table for such cases. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- include/linux/virtio.h | 4 ++++ drivers/virtio/virtio.c | 25 ++++++++++++++++++++++++- 2 files changed, 28

virtio blk has some legacy feature bits that modern drivers must not negotiate, but are needed for old legacy hosts (e.g. that dn't support virtio scsi). Allow a separate legacy feature table for such cases. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- include/linux/virtio.h | 4 ++++ drivers/virtio/virtio.c | 18 +++++++++++++++++- 2 files changed, 21 insertions(+), 1

virtio blk has some legacy feature bits that modern drivers must not negotiate, but are needed for old legacy hosts (e.g. that dn't support virtio scsi). Allow a separate legacy feature table for such cases. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- include/linux/virtio.h | 4 ++++ drivers/virtio/virtio.c | 18 +++++++++++++++++- 2 files changed, 21 insertions(+), 1

legacy_only flag is now unused, drop it from core. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- include/linux/virtio.h | 2 -- drivers/virtio/virtio.c | 4 ---- 2 files changed, 6 deletions(-) diff --git a/include/linux/virtio.h b/include/linux/virtio.h index d666bcb..d09e093 100644 --- a/include/linux/virtio.h +++ b/include/linux/virtio.h @@ -134,7 +134,6 @@ int

legacy_only flag is now unused, drop it from core. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- include/linux/virtio.h | 2 -- drivers/virtio/virtio.c | 4 ---- 2 files changed, 6 deletions(-) diff --git a/include/linux/virtio.h b/include/linux/virtio.h index d666bcb..d09e093 100644 --- a/include/linux/virtio.h +++ b/include/linux/virtio.h @@ -134,7 +134,6 @@ int

On Tue, Nov 25, 2014 at 06:53:42PM +0100, Cornelia Huck wrote: > On Tue, 25 Nov 2014 18:42:09 +0200 > "Michael S. Tsirkin" <mst at redhat.com> wrote: > > > virtio blk has some legacy feature bits that modern drivers > > virtio-blk > > > must not negotiate, but are needed for old legacy hosts > > (e.g. that dn't support virtio scsi). >

On Tue, Nov 25, 2014 at 06:53:42PM +0100, Cornelia Huck wrote: > On Tue, 25 Nov 2014 18:42:09 +0200 > "Michael S. Tsirkin" <mst at redhat.com> wrote: > > > virtio blk has some legacy feature bits that modern drivers > > virtio-blk > > > must not negotiate, but are needed for old legacy hosts > > (e.g. that dn't support virtio scsi). >

On Tue, 25 Nov 2014 18:42:09 +0200 "Michael S. Tsirkin" <mst at redhat.com> wrote: > virtio blk has some legacy feature bits that modern drivers virtio-blk > must not negotiate, but are needed for old legacy hosts > (e.g. that dn't support virtio scsi). (that e.g. don't support virtio-scsi) > Allow a separate legacy feature table for such cases. > >

the following is needed on top of v4 virtio 1.0 support that I sent. Will squash it in for v5. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- drivers/virtio/virtio.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/virtio/virtio.c b/drivers/virtio/virtio.c index 85a164e..e9018b4 100644 --- a/drivers/virtio/virtio.c +++ b/drivers/virtio/virtio.c @@ -113,6

the following is needed on top of v4 virtio 1.0 support that I sent. Will squash it in for v5. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- drivers/virtio/virtio.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/virtio/virtio.c b/drivers/virtio/virtio.c index 85a164e..e9018b4 100644 --- a/drivers/virtio/virtio.c +++ b/drivers/virtio/virtio.c @@ -113,6

Activate VIRTIO_F_VERSION_1 automatically unless legacy_only is set. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- include/uapi/linux/virtio_config.h | 4 ++-- drivers/virtio/virtio.c | 6 +++++- drivers/virtio/virtio_ring.c | 2 ++ 3 files changed, 9 insertions(+), 3 deletions(-) diff --git a/include/uapi/linux/virtio_config.h