Dariusz Stojaczyk face9eb258 virtio: add mb() before checking notify flag ... The kernel vhost target enables notifying after processing each interrupt in a following manner. * unset NO_NOTIFY flag * mb() * check avail ring for slipped requests And we do the following after issuing each I/O. * update avail ring * check NO_NOTIFY If NO_NOTIFY check is reordered and read first, we might read old `true` value, and avail ring might be updated after the kernel has already done its check. This easily leads to deadlock. Change-Id: I6bb4490775dfed6fb2987e97c39b713054ae26ad Signed-off-by: Dariusz Stojaczyk <dariuszx.stojaczyk@intel.com> Reviewed-on: https://review.gerrithub.io/396499 Tested-by: SPDK Automated Test System <sys_sgsw@intel.com> Reviewed-by: Jim Harris <james.r.harris@intel.com> Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>		2018-02-06 19:27:46 -05:00
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virtio_user	util: add spdk_strerror() wrapper with TLS support	2018-01-04 15:00:09 -05:00
Makefile	virtio: add new library virtio	2017-12-26 13:03:29 -05:00
virtio_pci.c	virtio: move vdev->name allocation to generic virtio	2018-01-23 22:49:21 -05:00
virtio_user.c	virtio: move vdev->name allocation to generic virtio	2018-01-23 22:49:21 -05:00
virtio.c	virtio: add mb() before checking notify flag	2018-02-06 19:27:46 -05:00