Halil Pasic 4f419eb142 virtio/s390: fix race on airq_areas[] ... The access to airq_areas was racy ever since the adapter interrupts got introduced to virtio-ccw, but since commit 39c7dcb158 ("virtio/s390: make airq summary indicators DMA") this became an issue in practice as well. Namely before that commit the airq_info that got overwritten was still functional. After that commit however the two infos share a summary_indicator, which aggravates the situation. Which means auto-online mechanism occasionally hangs the boot with virtio_blk. Signed-off-by: Halil Pasic <pasic@linux.ibm.com> Reported-by: Marc Hartmayer <mhartmay@linux.ibm.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Cc: stable@vger.kernel.org Fixes: 96b14536d9 ("virtio-ccw: virtio-ccw adapter interrupt support.") Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>		2019-07-26 13:36:18 +02:00
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Makefile
virtio_ccw.c	virtio/s390: fix race on airq_areas[]	2019-07-26 13:36:18 +02:00