Hi: This series tries to fix various issues of vhost: - Patch 1 adds a missing write barrier between used idx updating and logging. - Patch 2-3 brings back the protection of device IOTLB through vq mutex, this fixes possible use after free in device IOTLB entries. - Patch 4-7 fixes the diry page logging when device IOTLB is enabled. We should done through GPA instead of GIOVA, this was done through intorudce HVA->GPA reverse mapping and convert HVA to GPA during logging dirty pages. Please consider them for -stable. Thanks Changes from V1: - silent compiler warning for 32bit. - use mutex_trylock() on slowpath instead of mutex_lock() even on fast path. Jason Wang (4): vhost: make sure used idx is seen before log in vhost_add_used_n() vhost_net: switch to use mutex_trylock() in vhost_net_busy_poll() Revert "net: vhost: lock the vqs one by one" vhost: log dirty page correctly drivers/vhost/net.c | 11 ++++- drivers/vhost/vhost.c | 102 ++++++++++++++++++++++++++++++++++-------- drivers/vhost/vhost.h | 3 +- 3 files changed, 95 insertions(+), 21 deletions(-) -- 2.17.1 _______________________________________________ Virtualization mailing list Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linuxfoundation.org/mailman/listinfo/virtualization
