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Raise BLOCKIF_IOV_MAX to 128.

Authored by jhb on Jan 3 2017, 7:40 PM.


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Windows uses at least 67 virtio descriptors (as seen in gdb) and qemu also supports 128.

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rS FreeBSD src repository - subversion
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Buildable 6550

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jceel retitled this revision from to Raise BLOCKIF_IOV_MAX to 128. .
jceel updated this object.
jceel edited the test plan for this revision. (Show Details)
jceel added a reviewer: grehan.
jceel set the repository for this revision to rS FreeBSD src repository - subversion.

I don't think it's that simple (already tried - see r282922 and the subsequent backout in r283168)

Let me dig up the patch I have and see what else was changed.

I'd be glad to hear what else needs to be changed - I applied that patch in freenas/os tree about a month ago and heard from several users that it fixed virtio-blk on Windows for them, but maybe they didn't push it hard enough.

It fixes Windows but breaks other guests.

Unclear why phabricator does the remove of reviewers when I try to add group bhyve, restore grehan caused by that in last change.

jhb added a reviewer: jceel.
jhb added a subscriber: jhb.

Commandeering so I can close this. A similar fix was committed in rS347033.