[PATCH net 0/4] Fix various issue of vhost

Jason Wang
2018-12-10T09:44:50Z

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 fixes the diry page logging when device IOTLB is
enabled. We should done through GPA instead of GIOVA, this was done
through logging through iovec and traversing GPA->HPA list for the
GPA.

Please consider them for -stable.

Thanks

Jason Wang (4):
vhost: make sure used idx is seen before log in vhost_add_used_n()
vhost_net: rework on the lock ordering for busy polling
Revert "net: vhost: lock the vqs one by one"
vhost: log dirty page correctly

drivers/vhost/net.c | 21 +++++++--
drivers/vhost/vhost.c | 101 ++++++++++++++++++++++++++++++++++--------
drivers/vhost/vhost.h | 3 +-
3 files changed, 102 insertions(+), 23 deletions(-)

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2.17.1