search for: 3ed62ef

...return virtio_has_feature(vdev, VIRTIO_F_VERSION_1); > + if (virtio_has_feature(vdev, VIRTIO_F_VERSION_1)) > + return true; > + return virtio_legacy_is_little_endian(); > } > > /* Memory accessors */ > diff --git a/include/linux/vringh.h b/include/linux/vringh.h > index 3ed62ef..d786c2d 100644 > --- a/include/linux/vringh.h > +++ b/include/linux/vringh.h > @@ -228,7 +228,9 @@ static inline void vringh_notify(struct vringh *vrh) > > static inline bool vringh_is_little_endian(const struct vringh *vrh) > { > - return vrh->little_endian; > + if...

...return virtio_has_feature(vdev, VIRTIO_F_VERSION_1); > + if (virtio_has_feature(vdev, VIRTIO_F_VERSION_1)) > + return true; > + return virtio_legacy_is_little_endian(); > } > > /* Memory accessors */ > diff --git a/include/linux/vringh.h b/include/linux/vringh.h > index 3ed62ef..d786c2d 100644 > --- a/include/linux/vringh.h > +++ b/include/linux/vringh.h > @@ -228,7 +228,9 @@ static inline void vringh_notify(struct vringh *vrh) > > static inline bool vringh_is_little_endian(const struct vringh *vrh) > { > - return vrh->little_endian; > + if...

...return virtio_has_feature(vdev, VIRTIO_F_VERSION_1); > + if (virtio_has_feature(vdev, VIRTIO_F_VERSION_1)) > + return true; > + return virtio_legacy_is_little_endian(); > } > > /* Memory accessors */ > diff --git a/include/linux/vringh.h b/include/linux/vringh.h > index 3ed62ef..d786c2d 100644 > --- a/include/linux/vringh.h > +++ b/include/linux/vringh.h > @@ -228,7 +228,9 @@ static inline void vringh_notify(struct vringh *vrh) > > static inline bool vringh_is_little_endian(const struct vringh *vrh) > { > - return vrh->little_endian; > + if...

...return virtio_has_feature(vdev, VIRTIO_F_VERSION_1); > + if (virtio_has_feature(vdev, VIRTIO_F_VERSION_1)) > + return true; > + return virtio_legacy_is_little_endian(); > } > > /* Memory accessors */ > diff --git a/include/linux/vringh.h b/include/linux/vringh.h > index 3ed62ef..d786c2d 100644 > --- a/include/linux/vringh.h > +++ b/include/linux/vringh.h > @@ -228,7 +228,9 @@ static inline void vringh_notify(struct vringh *vrh) > > static inline bool vringh_is_little_endian(const struct vringh *vrh) > { > - return vrh->little_endian; > + if...

Signed-off-by: Greg Kurz <gkurz at linux.vnet.ibm.com> --- include/linux/vringh.h | 17 +++++++++++------ 1 file changed, 11 insertions(+), 6 deletions(-) diff --git a/include/linux/vringh.h b/include/linux/vringh.h index a3fa537..3ed62ef 100644 --- a/include/linux/vringh.h +++ b/include/linux/vringh.h @@ -226,33 +226,38 @@ static inline void vringh_notify(struct vringh *vrh) vrh->notify(vrh); } +static inline bool vringh_is_little_endian(const struct vringh *vrh) +{ + return vrh->little_endian; +} + static inline u16 v...

Signed-off-by: Greg Kurz <gkurz at linux.vnet.ibm.com> --- include/linux/vringh.h | 17 +++++++++++------ 1 file changed, 11 insertions(+), 6 deletions(-) diff --git a/include/linux/vringh.h b/include/linux/vringh.h index a3fa537..3ed62ef 100644 --- a/include/linux/vringh.h +++ b/include/linux/vringh.h @@ -226,33 +226,38 @@ static inline void vringh_notify(struct vringh *vrh) vrh->notify(vrh); } +static inline bool vringh_is_little_endian(const struct vringh *vrh) +{ + return vrh->little_endian; +} + static inline u16 v...

...endian(struct virtio_device *vdev) { - return virtio_has_feature(vdev, VIRTIO_F_VERSION_1); + if (virtio_has_feature(vdev, VIRTIO_F_VERSION_1)) + return true; + return virtio_legacy_is_little_endian(); } /* Memory accessors */ diff --git a/include/linux/vringh.h b/include/linux/vringh.h index 3ed62ef..d786c2d 100644 --- a/include/linux/vringh.h +++ b/include/linux/vringh.h @@ -228,7 +228,9 @@ static inline void vringh_notify(struct vringh *vrh) static inline bool vringh_is_little_endian(const struct vringh *vrh) { - return vrh->little_endian; + if (vrh->little_endian) + return true;...

...endian(struct virtio_device *vdev) { - return virtio_has_feature(vdev, VIRTIO_F_VERSION_1); + if (virtio_has_feature(vdev, VIRTIO_F_VERSION_1)) + return true; + return virtio_legacy_is_little_endian(); } /* Memory accessors */ diff --git a/include/linux/vringh.h b/include/linux/vringh.h index 3ed62ef..d786c2d 100644 --- a/include/linux/vringh.h +++ b/include/linux/vringh.h @@ -228,7 +228,9 @@ static inline void vringh_notify(struct vringh *vrh) static inline bool vringh_is_little_endian(const struct vringh *vrh) { - return vrh->little_endian; + if (vrh->little_endian) + return true;...

...virtio_is_little_endian(struct virtio_device *vdev) { - return virtio_has_feature(vdev, VIRTIO_F_VERSION_1); + return virtio_has_feature(vdev, VIRTIO_F_VERSION_1) || + virtio_legacy_is_little_endian(); } /* Memory accessors */ diff --git a/include/linux/vringh.h b/include/linux/vringh.h index 3ed62ef..bc6c28d 100644 --- a/include/linux/vringh.h +++ b/include/linux/vringh.h @@ -228,7 +228,8 @@ static inline void vringh_notify(struct vringh *vrh) static inline bool vringh_is_little_endian(const struct vringh *vrh) { - return vrh->little_endian; + return vrh->little_endian || + virtio_l...

...truct virtio_device *vdev) { - return virtio_has_feature(vdev, VIRTIO_F_VERSION_1); + if (virtio_has_feature(vdev, VIRTIO_F_VERSION_1)) + return true; + else + return virtio_legacy_is_little_endian(); } /* Memory accessors */ diff --git a/include/linux/vringh.h b/include/linux/vringh.h index 3ed62ef..d070bbcd 100644 --- a/include/linux/vringh.h +++ b/include/linux/vringh.h @@ -228,7 +228,7 @@ static inline void vringh_notify(struct vringh *vrh) static inline bool vringh_is_little_endian(const struct vringh *vrh) { - return vrh->little_endian; + return vrh->little_endian ? true : virt...

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()

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 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

Hi, This patchset allows vhost to be used with legacy virtio when guest and host have a different endianness. Patch 7 got rewritten according to Cornelia's and Michael's comments. I have also introduced patch 8 that brings BE vnet headers support to tun/macvtap. This series is enough to have vhost_net working flawlessly. I could succesfully reboot guests from ppc64 to ppc64le and

Hi, This patchset allows vhost to be used with legacy virtio when guest and host have a different endianness. Patch 7 got rewritten according to Cornelia's and Michael's comments. I have also introduced patch 8 that brings BE vnet headers support to tun/macvtap. This series is enough to have vhost_net working flawlessly. I could succesfully reboot guests from ppc64 to ppc64le and

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