similar to: [PATCH] fixup! 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 (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 (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> --- 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 | 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

We have no plans to support virtio 1.0 in balloon driver. Add an explicit flag to mark it legacy only. This will be used by follow-up patches. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- include/linux/virtio.h | 2 ++ drivers/virtio/virtio_balloon.c | 1 + 2 files changed, 3 insertions(+) diff --git a/include/linux/virtio.h b/include/linux/virtio.h index

We have no plans to support virtio 1.0 in balloon driver. Add an explicit flag to mark it legacy only. This will be used by follow-up patches. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- include/linux/virtio.h | 2 ++ drivers/virtio/virtio_balloon.c | 1 + 2 files changed, 3 insertions(+) diff --git a/include/linux/virtio.h b/include/linux/virtio.h index

Virtio 1.0 spec says VIRTIO_F_ANY_LAYOUT and VIRTIO_NET_F_GSO are legacy-only feature bits. Do not negotiate them in virtio 1 mode. Note this is a spec violation so we need to backport it to stable/downstream kernels. Cc: stable at vger.kernel.org Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- drivers/net/virtio_net.c | 30 ++++++++++++++++++++---------- 1 file changed, 20

Virtio 1.0 spec says VIRTIO_F_ANY_LAYOUT and VIRTIO_NET_F_GSO are legacy-only feature bits. Do not negotiate them in virtio 1 mode. Note this is a spec violation so we need to backport it to stable/downstream kernels. Cc: stable at vger.kernel.org Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- drivers/net/virtio_net.c | 30 ++++++++++++++++++++---------- 1 file changed, 20

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