Red Hat Bugzilla – Bug 802226
Back to userspace when fail to allocate ioeventfd
Last modified: 2015-05-24 20:06:36 EDT
Description of problem:
If we support pci-bridge, we would have more pci-devices.
Then kernel could not provide enough ioeventfd, virtio net/blk should go back to userspace when fail to allocate ioeventfd, not exit.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. boot up guest with 232 virtio-blk
qemu would exit and output "unable to map ioeventfd: -28"
Talked with mst, we need to resolve bz 753692 by go back
to userspace when fail to allocate ioeventfd.
Need to open a new bug for my kernel fix+backport (bsearch lookup iobus devices)
*** This bug has been marked as a duplicate of bug 753692 ***