similar to: [PATCH 0/2] virtio: two small improvements

balloon device is not part of virtio 1.0 spec. Still, it's easy enough to make it handle endian-ness exactly as other virtio 1.0 devices: what we gain from this, is that there's no need to special-case it in virtio core. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- include/uapi/linux/virtio_balloon.h | 5 +++-- drivers/virtio/virtio_balloon.c | 4 ++-- 2 files

balloon device is not part of virtio 1.0 spec. Still, it's easy enough to make it handle endian-ness exactly as other virtio 1.0 devices: what we gain from this, is that there's no need to special-case it in virtio core. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- include/uapi/linux/virtio_balloon.h | 5 +++-- drivers/virtio/virtio_balloon.c | 4 ++-- 2 files

These are minor robustness enhancements on top of v8 of the patchset [PATCH v8 00/50] linux: towards virtio-1 guest support http://mid.gmane.org/1417449619-24896-1-git-send-email-mst at redhat.com As that one seems stable and actually seems to work well for people, I'm not respinning it anymore. The main motivation is to prevent us accidentally supporting bad configurations, such as legacy

These are minor robustness enhancements on top of v8 of the patchset [PATCH v8 00/50] linux: towards virtio-1 guest support http://mid.gmane.org/1417449619-24896-1-git-send-email-mst at redhat.com As that one seems stable and actually seems to work well for people, I'm not respinning it anymore. The main motivation is to prevent us accidentally supporting bad configurations, such as legacy

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

Some drivers can't support all features in all configurations. At the moment we blindly set FEATURES_OK and later FAILED. Support this better by adding a callback drivers can use to do some early checks. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- drivers/virtio/virtio.c | 6 ++++++ include/linux/virtio.h | 1 + 2 files changed, 7 insertions(+) diff --git

Some drivers can't support all features in all configurations. At the moment we blindly set FEATURES_OK and later FAILED. Support this better by adding a callback drivers can use to do some early checks. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- drivers/virtio/virtio.c | 6 ++++++ include/linux/virtio.h | 1 + 2 files changed, 7 insertions(+) diff --git

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

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

The s390-specific virtio drivers have probably more to do with virtio than with kvm today; let's move them out into a separate section to reflect this and to be able to add relevant mailing lists. CC: Christian Borntraeger <borntraeger at de.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck at de.ibm.com> --- MAINTAINERS | 10 +++++++++- 1 file changed, 9 insertions(+), 1

The s390-specific virtio drivers have probably more to do with virtio than with kvm today; let's move them out into a separate section to reflect this and to be able to add relevant mailing lists. CC: Christian Borntraeger <borntraeger at de.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck at de.ibm.com> --- MAINTAINERS | 10 +++++++++- 1 file changed, 9 insertions(+), 1

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 (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 (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