Messages in this thread | | | From | Jason Wang <> | Subject | [PATCH net V2 0/4] Fix various issue of vhost | Date | Wed, 12 Dec 2018 18:08:15 +0800 |
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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
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