The bhyve(8) exit status indicates how the VM was terminated:
0 rebooted
1 powered off
2 halted
3 triple fault
The problem is when we have wrappers around bhyve that parses the exit
error code and gets an exit(1) for an error but interprets it as "powered off".
So to mitigate this issue and makes it less error prone for third part
applications, I have added a new exit code 4 that is "exited due to an error".
For now the bhyve(8) exit status are:
0 rebooted
1 powered off
2 halted
3 triple fault
4 exited due to an error
Reviewed by: @jhb
MFC after: 2 weeks.
Sponsored by: iXsystems Inc.
Differential Revision: https://reviews.freebsd.org/D16161
Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
prone - task.
The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.
No functional change intended.
The TCP server implementation in dbgport does not track clients, so it
may try to write to a disconected socket resulting in SIGPIPE.
Avoid that by setting SO_NOSIGPIPE socket option.
Because dbgport emulates an I/O port to guest, the communication is done
byte by byte. Reduce latency of the TCP/IP transfers by using
TCP_NODELAY option. In my tests that change improves performance of
kgdb commands with lots of output (e.g. info threads) by two orders of
magnitude.
A general note. Since we have a uart emulation in bhyve, that can be
used for the console and gdb access to guests. So, bvmconsole and bvmdebug
could be de-orbited now. But there are many existing deployments that
still dependend on those.
Discussed with: julian, jhb
MFC after: 2 weeks
Sponsored by: Panzura
- Respect the MEMEN and PORTEN bits in the command register
- Allow the guest to reprogram the address decoded by the BAR
Submitted by: Gopakumar T
Obtained from: NetApp
vmm.ko - kernel module for VT-x, VT-d and hypervisor control
bhyve - user-space sequencer and i/o emulation
vmmctl - dump of hypervisor register state
libvmm - front-end to vmm.ko chardev interface
bhyve was designed and implemented by Neel Natu.
Thanks to the following folk from NetApp who helped to make this available:
Joe CaraDonna
Peter Snyder
Jeff Heller
Sandeep Mann
Steve Miller
Brian Pawlowski
