search for: vhost_vring_little_endian

...t; +static long vhost_set_vring_endian(struct vhost_virtqueue *vq, int __user *argp) > +{ > + struct vhost_vring_state s; > + > + if (vq->private_data) > + return -EBUSY; > + > + if (copy_from_user(&s, argp, sizeof(s))) > + return -EFAULT; > + > + if (s.num != VHOST_VRING_LITTLE_ENDIAN && > + s.num != VHOST_VRING_BIG_ENDIAN) > + return -EINVAL; > + > + vq->user_be = s.num; > + > + return 0; > +} > + > +static long vhost_get_vring_endian(struct vhost_virtqueue *vq, u32 idx, > + int __user *argp) > +{ > + struct vhost_vring_...

...t; +static long vhost_set_vring_endian(struct vhost_virtqueue *vq, int __user *argp) > +{ > + struct vhost_vring_state s; > + > + if (vq->private_data) > + return -EBUSY; > + > + if (copy_from_user(&s, argp, sizeof(s))) > + return -EFAULT; > + > + if (s.num != VHOST_VRING_LITTLE_ENDIAN && > + s.num != VHOST_VRING_BIG_ENDIAN) > + return -EINVAL; > + > + vq->user_be = s.num; > + > + return 0; > +} > + > +static long vhost_get_vring_endian(struct vhost_virtqueue *vq, u32 idx, > + int __user *argp) > +{ > + struct vhost_vring_...

...t_virtqueue *vq, int __user *argp) > > +{ > > + struct vhost_vring_state s; > > + > > + if (vq->private_data) > > + return -EBUSY; > > + > > + if (copy_from_user(&s, argp, sizeof(s))) > > + return -EFAULT; > > + > > + if (s.num != VHOST_VRING_LITTLE_ENDIAN && > > + s.num != VHOST_VRING_BIG_ENDIAN) > > + return -EINVAL; > > + > > + vq->user_be = s.num; > > + > > + return 0; > > +} > > + > > +static long vhost_get_vring_endian(struct vhost_virtqueue *vq, u32 idx, > > + in...

...gt;user_be = !virtio_legacy_is_little_endian(); +} + +static long vhost_set_vring_endian(struct vhost_virtqueue *vq, int __user *argp) +{ + struct vhost_vring_state s; + + if (vq->private_data) + return -EBUSY; + + if (copy_from_user(&s, argp, sizeof(s))) + return -EFAULT; + + if (s.num != VHOST_VRING_LITTLE_ENDIAN && + s.num != VHOST_VRING_BIG_ENDIAN) + return -EINVAL; + + vq->user_be = s.num; + + return 0; +} + +static long vhost_get_vring_endian(struct vhost_virtqueue *vq, u32 idx, + int __user *argp) +{ + struct vhost_vring_state s = { + .index = idx, + .num = vq->user_be + }; +...

...gt;user_be = !virtio_legacy_is_little_endian(); +} + +static long vhost_set_vring_endian(struct vhost_virtqueue *vq, int __user *argp) +{ + struct vhost_vring_state s; + + if (vq->private_data) + return -EBUSY; + + if (copy_from_user(&s, argp, sizeof(s))) + return -EFAULT; + + if (s.num != VHOST_VRING_LITTLE_ENDIAN && + s.num != VHOST_VRING_BIG_ENDIAN) + return -EINVAL; + + vq->user_be = s.num; + + return 0; +} + +static long vhost_get_vring_endian(struct vhost_virtqueue *vq, u32 idx, + int __user *argp) +{ + struct vhost_vring_state s = { + .index = idx, + .num = vq->user_be + }; +...

Hi, This patchset allows vhost to be used with legacy virtio when guest and host have a different endianness. It is compatible with modern virtio and can be fully compiled out through kernel config. FWIW, I could flawlessly kexec/reboot guests from ppc64 to ppc64le and back. I could also migrate from a ppc64 to a ppc64le host and back. No regressions on x86 as expected. My experimental QEMU tree

Hi, This patchset allows vhost to be used with legacy virtio when guest and host have a different endianness. It is compatible with modern virtio and can be fully compiled out through kernel config. FWIW, I could flawlessly kexec/reboot guests from ppc64 to ppc64le and back. I could also migrate from a ppc64 to a ppc64le host and back. No regressions on x86 as expected. My experimental QEMU tree

Hi, This series allows QEMU to use vhost with legacy virtio devices when host and target don't have the same endianness. Only network devices are covered for the moment. I had already posted a series some monthes ago but it never got reviewed. Moreover, the underlying kernel support was entirely re-written and is still waiting to be applied by Michael. I hence post as RFC. The corresponding

Hi, This series allows QEMU to use vhost with legacy virtio devices when host and target don't have the same endianness. Only network devices are covered for the moment. I had already posted a series some monthes ago but it never got reviewed. Moreover, the underlying kernel support was entirely re-written and is still waiting to be applied by Michael. I hence post as RFC. The corresponding

Only cosmetic and documentation changes since v5. --- Greg Kurz (8): virtio: introduce virtio_is_little_endian() helper tun: add tun_is_little_endian() helper macvtap: introduce macvtap_is_little_endian() helper vringh: introduce vringh_is_little_endian() helper vhost: introduce vhost_is_little_endian() helper virtio: add explicit big-endian support to memory

Only cosmetic and documentation changes since v5. --- Greg Kurz (8): virtio: introduce virtio_is_little_endian() helper tun: add tun_is_little_endian() helper macvtap: introduce macvtap_is_little_endian() helper vringh: introduce vringh_is_little_endian() helper vhost: introduce vhost_is_little_endian() helper virtio: add explicit big-endian support to memory