vmm: Increase the vmthread stack size
authorBarret Rhoden <brho@cs.berkeley.edu>
Tue, 31 Jan 2017 15:04:00 +0000 (10:04 -0500)
committerBarret Rhoden <brho@cs.berkeley.edu>
Tue, 31 Jan 2017 15:04:00 +0000 (10:04 -0500)
commit55ff62356fec036219d6f59b619e0b39fabc9d04
tree42f4889ff59bb824d8c231c945422e50a13ef6b4
parentef5578f890298dc5234df273ea4e2547fd570902
vmm: Increase the vmthread stack size

I think the bypass codepaths (virtio->nat->bypass->iplib->nettrans)
consumed too much stack, and a thread went off the bottom of the page.  I
had a user PF at RIP = 8 and RSP right at the top of a page.  Increasing
the stack size removed the symptom.

Signed-off-by: Barret Rhoden <brho@cs.berkeley.edu>
user/vmm/include/vmm/sched.h
user/vmm/nat.c