search for: vhost_vring_endian

...tic int vhost_worker(void *data) > @@ -806,6 +807,24 @@ long vhost_vring_ioctl(struct vhost_dev *d, int ioctl, void __user *argp) > } else > filep = eventfp; > break; > +#ifdef CONFIG_VHOST_SET_ENDIAN_LEGACY > + case VHOST_SET_VRING_ENDIAN_LEGACY: > + { > + struct vhost_vring_endian e; > + > + if (!vhost_has_feature(vq, VHOST_F_SET_ENDIAN_LEGACY)) { > + r = -EINVAL; > + break; > + } > + > + if (copy_from_user(&e, argp, sizeof(e))) { > + r = -EFAULT; > + break; > + } > + vq->legacy_big_endian = e.is_big_endian; > + break;...

...tic int vhost_worker(void *data) > @@ -806,6 +807,24 @@ long vhost_vring_ioctl(struct vhost_dev *d, int ioctl, void __user *argp) > } else > filep = eventfp; > break; > +#ifdef CONFIG_VHOST_SET_ENDIAN_LEGACY > + case VHOST_SET_VRING_ENDIAN_LEGACY: > + { > + struct vhost_vring_endian e; > + > + if (!vhost_has_feature(vq, VHOST_F_SET_ENDIAN_LEGACY)) { > + r = -EINVAL; > + break; > + } > + > + if (copy_from_user(&e, argp, sizeof(e))) { > + r = -EFAULT; > + break; > + } > + vq->legacy_big_endian = e.is_big_endian; > + break;...

...>legacy_big_endian = false; } static int vhost_worker(void *data) @@ -806,6 +807,24 @@ long vhost_vring_ioctl(struct vhost_dev *d, int ioctl, void __user *argp) } else filep = eventfp; break; +#ifdef CONFIG_VHOST_SET_ENDIAN_LEGACY + case VHOST_SET_VRING_ENDIAN_LEGACY: + { + struct vhost_vring_endian e; + + if (!vhost_has_feature(vq, VHOST_F_SET_ENDIAN_LEGACY)) { + r = -EINVAL; + break; + } + + if (copy_from_user(&e, argp, sizeof(e))) { + r = -EFAULT; + break; + } + vq->legacy_big_endian = e.is_big_endian; + break; + } +#endif default: r = -ENOIOCTLCMD; } diff --git...

...t; @@ -806,6 +807,24 @@ long vhost_vring_ioctl(struct vhost_dev *d, int ioctl, void __user *argp) > > } else > > filep = eventfp; > > break; > > +#ifdef CONFIG_VHOST_SET_ENDIAN_LEGACY > > + case VHOST_SET_VRING_ENDIAN_LEGACY: > > + { > > + struct vhost_vring_endian e; > > + > > + if (!vhost_has_feature(vq, VHOST_F_SET_ENDIAN_LEGACY)) { > > + r = -EINVAL; > > + break; > > + } > > + > > + if (copy_from_user(&e, argp, sizeof(e))) { > > + r = -EFAULT; > > + break; > > + } > > + vq-...

Hi, This patchset allows vhost to be used with legacy virtio when guest and host have a different endianness. It is a complete rework of my initial post. Patches 1 to 5 are preliminary work: we move the endianness check out of all memory accessors to separate functions. Patch 6 changes the semantics of the accessors so that they have explicit big endian support. Patch 7 brings the cross-endian

Hi, This patchset allows vhost to be used with legacy virtio when guest and host have a different endianness. It is a complete rework of my initial post. Patches 1 to 5 are preliminary work: we move the endianness check out of all memory accessors to separate functions. Patch 6 changes the semantics of the accessors so that they have explicit big endian support. Patch 7 brings the cross-endian

...etion(-) > > Changes since v2: > - fixed typos in Kconfig description > - renamed vq->legacy_big_endian to vq->legacy_is_little_endian > - vq->legacy_is_little_endian reset to default in vhost_vq_reset() > - dropped VHOST_F_SET_ENDIAN_LEGACY feature > - dropped struct vhost_vring_endian from the user API (re-use > struct vhost_vring_state instead) > - added VHOST_GET_VRING_ENDIAN_LEGACY ioctl > - introduced more helpers and stubs to avoid polluting the code with ifdefs > > > diff --git a/drivers/vhost/Kconfig b/drivers/vhost/Kconfig > index 017a1e8..0aec88...

...etion(-) > > Changes since v2: > - fixed typos in Kconfig description > - renamed vq->legacy_big_endian to vq->legacy_is_little_endian > - vq->legacy_is_little_endian reset to default in vhost_vq_reset() > - dropped VHOST_F_SET_ENDIAN_LEGACY feature > - dropped struct vhost_vring_endian from the user API (re-use > struct vhost_vring_state instead) > - added VHOST_GET_VRING_ENDIAN_LEGACY ioctl > - introduced more helpers and stubs to avoid polluting the code with ifdefs > > > diff --git a/drivers/vhost/Kconfig b/drivers/vhost/Kconfig > index 017a1e8..0aec88...

...etion(-) > > Changes since v2: > - fixed typos in Kconfig description > - renamed vq->legacy_big_endian to vq->legacy_is_little_endian > - vq->legacy_is_little_endian reset to default in vhost_vq_reset() > - dropped VHOST_F_SET_ENDIAN_LEGACY feature > - dropped struct vhost_vring_endian from the user API (re-use > struct vhost_vring_state instead) > - added VHOST_GET_VRING_ENDIAN_LEGACY ioctl > - introduced more helpers and stubs to avoid polluting the code with ifdefs > > > diff --git a/drivers/vhost/Kconfig b/drivers/vhost/Kconfig > index 017a1e8..0aec88...

...etion(-) > > Changes since v2: > - fixed typos in Kconfig description > - renamed vq->legacy_big_endian to vq->legacy_is_little_endian > - vq->legacy_is_little_endian reset to default in vhost_vq_reset() > - dropped VHOST_F_SET_ENDIAN_LEGACY feature > - dropped struct vhost_vring_endian from the user API (re-use > struct vhost_vring_state instead) > - added VHOST_GET_VRING_ENDIAN_LEGACY ioctl > - introduced more helpers and stubs to avoid polluting the code with ifdefs > > > diff --git a/drivers/vhost/Kconfig b/drivers/vhost/Kconfig > index 017a1e8..0aec88...

...es changed, 86 insertions(+), 1 deletion(-) Changes since v2: - fixed typos in Kconfig description - renamed vq->legacy_big_endian to vq->legacy_is_little_endian - vq->legacy_is_little_endian reset to default in vhost_vq_reset() - dropped VHOST_F_SET_ENDIAN_LEGACY feature - dropped struct vhost_vring_endian from the user API (re-use struct vhost_vring_state instead) - added VHOST_GET_VRING_ENDIAN_LEGACY ioctl - introduced more helpers and stubs to avoid polluting the code with ifdefs diff --git a/drivers/vhost/Kconfig b/drivers/vhost/Kconfig index 017a1e8..0aec88c 100644 --- a/drivers/vhost/Kconfi...

Hi, This patchset allows vhost to be used with legacy virtio when guest and host have a different endianness. Patches 1-6 remain the same as the previous post. Patch 7 was heavily changed according to MST's comments. --- Greg Kurz (7): virtio: introduce virtio_is_little_endian() helper tun: add tun_is_little_endian() helper macvtap: introduce macvtap_is_little_endian()

Hi, This patchset allows vhost to be used with legacy virtio when guest and host have a different endianness. Patches 1-6 remain the same as the previous post. Patch 7 was heavily changed according to MST's comments. --- Greg Kurz (7): virtio: introduce virtio_is_little_endian() helper tun: add tun_is_little_endian() helper macvtap: introduce macvtap_is_little_endian()