From mboxrd@z Thu Jan 1 00:00:00 1970 From: Greg Kurz Subject: [PATCH v4 0/8] vhost: support for cross endian guests Date: Fri, 10 Apr 2015 12:15:00 +0200 Message-ID: <20150410101500.31843.61248.stgit@bahia.local> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: virtualization-bounces@lists.linux-foundation.org Errors-To: virtualization-bounces@lists.linux-foundation.org To: Rusty Russell , "Michael S. Tsirkin" Cc: linux-api@vger.kernel.org, linux-kernel@vger.kernel.org, kvm@vger.kernel.org, virtualization@lists.linux-foundation.org List-Id: linux-api@vger.kernel.org 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 vice-versa on ppc64 and ppc64le hosts. --- 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 accessors vhost: feature to set the vring endianness macvtap/tun: add VNET_BE flag drivers/net/Kconfig | 12 ++++++ drivers/net/macvtap.c | 69 ++++++++++++++++++++++++++++++++++- drivers/net/tun.c | 71 +++++++++++++++++++++++++++++++++++- drivers/vhost/Kconfig | 10 +++++ drivers/vhost/vhost.c | 76 ++++++++++++++++++++++++++++++++++++++ drivers/vhost/vhost.h | 25 ++++++++++--- include/linux/virtio_byteorder.h | 24 +++++++----- include/linux/virtio_config.h | 19 +++++++--- include/linux/vringh.h | 19 +++++++--- include/uapi/linux/if_tun.h | 2 + include/uapi/linux/vhost.h | 9 +++++ 11 files changed, 303 insertions(+), 33 deletions(-) -- Greg