When vDPA applicaiton in client mode shutdown, unmapped VQ notifier
might being accessed by vCPU thread under high tx traffic, it will
crash VM in rare conditon. This patch try to fix it with better RCU
sychronization of new flatview.
v2: no RCU draining on vCPU thread
v3: minor fix on coding style and comments
https://lists.nongnu.org/archive/html/qemu-devel/2021-10/msg01764.html
v4: fix first patch compilation
https://lists.nongnu.org/archive/html/qemu-devel/2021-10/msg04060.html
v5: update 2/2 commit message
https://lists.nongnu.org/archive/html/qemu-devel/2021-10/msg04115.html
v6: use call_rcu to avoid dead lock in rcu reader
Xueming Li (2):
vhost-user: remove VirtQ notifier restore
vhost-user: fix VirtQ notifier cleanup
hw/virtio/vhost-user.c | 63 ++++++++++++++++------------------
include/hw/virtio/vhost-user.h | 3 +-
2 files changed, 31 insertions(+), 35 deletions(-)
--
2.33.0
