Move initialization of the mutex/condition variables required by the
save/restore feature to their own function.
The unix domain socket that facilitates communication between bhyvectl
and bhyve doesn't rely on these variables in order to be functional.
Reviewed by: markj
Differential Revision: https://reviews.freebsd.org/D30281
This is a step towards sending messages (other than suspend/checkpoint)
from bhyvectl to bhyve.
Introduce a new struct, ipc_message - this struct stores the type of
message and a union containing message specific structures for the type
of message being sent.
Reviewed by: grehan
Differential Revision: https://reviews.freebsd.org/D30221
Fixes segfault with the command `bhyve -s 0,virtio-scsi`, which is used
by some third party software to probe bhyve for virtio-scsi support.
Reviewed by: jhb
MFC after: 1 day
Sponsored by: iXsystems, Inc.
Differential Revision: https://reviews.freebsd.org/D29926
- Use appropriate mdoc macros
- Document that tcp= is a synonym to rfb= (tcp is used in the examples,
but never mentioned)
- Clarify the IP address specification
MFC after: 2 weeks
- Set width of the list to the longest key word for readability.
- Separate descriptions of amd_hostbridge and hostbridge emulations.
Also, wordsmith their descriptions for consistency with other entries.
- Use Cm instead of Li for command modifiers.
- Do not stylize AMD with Li, there's no need to do it.
- Mention COM3 and COM4 in the definition of lpc.
- Fix a typo in the definition of ahci-hd ("hard drive" instead of
"hard-drive").
MFC after: 2 weeks
Also, remove the macros of the nested list which contained slot,
emulation and conf. This decreases the indention of the -s description.
It was necessary to clean up the slot description.
MFC after: 2 weeks
- Describe "-l help" separately for readability.
- List all the supported comX devices explicitly
- Use Cm instead of Ar for command modifiers (i.e., literal values a
user can specify as an argument to the command).
- Explain where to get more information about the possible values of the
conf argument.
MFC after: 2 weeks
In particular:
- Sort short options to align with style(9)
- Add two missing flags: -G and -r
- Drop unnecessary angle brackets for consistency
- Rename the "vm" argument to vmname for consistency with the manual
page
MFC after: 2 weeks
There is no need to squeeze all the possible options into one synopsis
entry. Let "-l help" and "-s help" be listed separately.
While here, keep -s and its arguments on the same line.
MFC after: 2 weeks
Without the -w option, Windows guests crash on boot. This is caused by a rdmsr
of MSR_IA32_FEATURE_CONTROL. Windows checks this MSR to determine enabled VMX
features. This MSR isn't emulated in bhyve, so a #GP exception is injected
which causes Windows to crash.
Fix by returning a rdmsr of MSR_IA32_FEATURE_CONTROL with Lock Bit set and
VMX disabled to informWindows that VMX isn't available.
Reviewed by: jhb, grehan (bhyve)
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D29665
The check needs to be in the public routine (gdb_cpu_suspend()), not
in the internal routine called from various places
(_gdb_cpu_suspend()). All the other callers of _gdb_cpu_suspend()
already check gdb_active, and this breaks the use of snapshots when
the debug server is not enabled since gdb_cpu_suspend() tries to lock
an uninitialized mutex.
Reported by: Darius Mihai, Elena Mihailescu
Reviewed by: elenamihailescu22_gmail.com
Fixes: 621b509048
Differential Revision: https://reviews.freebsd.org/D29538
Add the System Management BIOS Baseboard (or Module) Information
a.k.a. Type 2 structure to the SMBIOS emulation.
Reviewed by: rgrimes, bcran, grehan
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D29657
Commit 621b509048 introduced a regression
in legacy virtio-9p config parsing by not initializing *sharename to
NULL. As a result, "sharename != NULL" check in the first iteration fails
and bhyve exits with "virtio-9p: more than one share name given".
Fix by adding NULL back.
Approved by: grehan
This allows the xhci tablet device to be recognized and a PCI device
instantiated.
Reviewed by: jhb
Fixes: 621b509048 Refactor configuration management in bhyve.
MFC after: 3 months.
The old prototype requires callers to inspect flags of each descriptors
to get the starting position of host-writable iovecs.
vq_getchain() is changed to return a virtio request with the number of
host-readable iovecs and host-writable iovecs instead. Callers can avoid
boilerplate code of getting the start offset of host-writable iovecs.
Sponsored by: The FreeBSD Foundation
MFC after: 3 weeks
Reviewed by: afedorov
Approved by: philip (mentor)
Differential Revision: https://reviews.freebsd.org/D29433
The previous commit added the handler to parse the command line
options for virtio-scsi devices but forgot to set the correct function
pointer to point to the handler.
Reported by: vangyzen
Reviewed by: vangyzen
Fixes: 621b509048
Differential Revision: https://reviews.freebsd.org/D29438
"device" is already used as the generic PCI-level name of the device
model to use (e.g. "hostbridge"). The result was that parsing
"hostbridge" as an integer failed and the host bridge used a device ID
of 0. The EFI ROM asserts that the device ID of the hostbridge is not
0, so booting with the current EFI ROM was failing during the ROM
boot.
Fixes: 621b509048
We want to allow the UEFI firmware to enumerate and assign
addresses to PCI devices so we can boot from NVMe[1]. Address
assignment of PCI BARs is properly handled by the PCI emulation
code in general, but a few specific cases need additional support.
fbuf and passthru map additional objects into the guest physical
address space and so need to handle address updates. Here we add a
callback to emulated PCI devices to inform them of a BAR
configuration change. fbuf and passthru then watch for these BAR
changes and relocate the frame buffer memory segment and passthru
device mmio area respectively.
We also add new VM_MUNMAP_MEMSEG and VM_UNMAP_PPTDEV_MMIO ioctls
to vmm(4) to facilitate the unmapping needed for addres updates.
[1]: https://github.com/freebsd/uefi-edk2/pull/9/
Originally by: scottph
MFC After: 1 week
Sponsored by: Intel Corporation
Reviewed by: grehan
Approved by: philip (mentor)
Differential Revision: https://reviews.freebsd.org/D24066
Replace the existing ad-hoc configuration via various global variables
with a small database of key-value pairs. The database supports
heirarchical keys using a MIB-like syntax to name the path to a given
key. Values are always stored as strings. The API used to manage
configuation values does include wrappers to handling boolean values.
Other values use non-string types require parsing by consumers.
The configuration values are stored in a tree using nvlists. Leaf
nodes hold string values. Configuration values are permitted to
reference other configuration values using '%(name)'. This permits
constructing template configurations.
All existing command line arguments now set configuration values. For
devices, the "-s" option parses its option argument to generate a list
of key-value pairs for the given device.
A new '-o' command line option permits setting an individual
configuration variable. The key name is always given as a full path
of dot-separated components.
A new '-k' command line option parses a simple configuration file.
This configuration file holds a flat list of 'key=value' lines where
the 'key' is the full path of a configuration variable. Lines
starting with a '#' are comments.
In general, bhyve starts by parsing command line options in sequence
and applying those settings to configuration values. Once this is
complete, bhyve then begins initializing its state based on the
configuration values. This means that subsequent configuration
options or files may override or supplement previously given settings.
A special 'config.dump' configuration value can be set to true to help
debug configuration issues. When this value is set, bhyve will print
out the configuration variables as a flat list of 'key=value' lines.
Most command line argments map to a single configuration variable,
e.g. '-w' sets the 'x86.strictmsr' value to false. A few command
line arguments have less obvious effects:
- Multiple '-p' options append their values (as a comma-seperated
list) to "vcpu.N.cpuset" values (where N is a decimal vcpu number).
- For '-s' options, a pci.<bus>.<slot>.<function> node is created.
The first argument to '-s' (the device type) is used as the value of
a "device" variable. Additional comma-separated arguments are then
parsed into 'key=value' pairs and used to set additional variables
under the device node. A PCI device emulation driver can provide
its own hook to override the parsing of the additonal '-s' arguments
after the device type.
After the configuration phase as completed, the init_pci hook
then walks the "pci.<bus>.<slot>.<func>" nodes. It uses the
"device" value to find the device model to use. The device
model's init routine is passed a reference to its nvlist node
in the configuration tree which it can query for specific
variables.
The result is that a lot of the string parsing is removed from
the device models and centralized. In addition, adding a new
variable just requires teaching the model to look for the new
variable.
- For '-l' options, a similar model is used where the string is
parsed into values that are later read during initialization.
One key note here is that the serial ports use the commonly
used lowercase names from existing documentation and examples
(e.g. "lpc.com1") instead of the uppercase names previously
used internally in bhyve.
Reviewed by: grehan
MFC after: 3 months
Differential Revision: https://reviews.freebsd.org/D26035
Definitions inside usr.sbin/bhyve/virtio.h are thrown away.
Definitions in sys/dev/virtio are used instead.
This reduces code duplication.
Sponsored by: The FreeBSD Foundation
Reviewed by: grehan
Approved by: philip (mentor)
Differential Revision: https://reviews.freebsd.org/D29084
The save/restore feature uses a unix domain socket to send messages
from bhyvectl(8) to a bhyve(8) process. A datagram socket will suffice
for this.
An added benefit of using a datagram socket is simplified code. For
bhyve, the listen/accept calls are dropped; and for bhyvectl, the
connect() call is dropped.
EPRINTLN handles raw mode for bhyve(8), use it to print error messages.
Reviewed by: jhb
Differential Revision: https://reviews.freebsd.org/D28983
MAX_SNAPSHOT_VMNAME is a macro used to set the size of a character
buffer that stores a filename or the path to a file - this file is used
by the save/restore feature.
Since the file doesn't have anything to do with a vm name, rename
MAX_SNAPSHOT_VMNAME to MAX_SNAPSHOT_FILENAME. Bump the size to PATH_MAX
while here.
Reviewed by: jhb
Differential Revision: https://reviews.freebsd.org/D28879
Generalize the naming here since the domain socket that uses these codes
might be used for purposes other than the save/restore feature.
- rename checkpoint_opcodes to ipc_opcode
Reviewed by: jhb
Differential Revision: https://reviews.freebsd.org/D28877
Add /var/run/bhyve/ to BSD.var.dist so we don't have to call mkdir when
creating the unix domain socket for a given bhyve vm.
The path to the unix domain socket for a bhyve vm will now be
/var/run/bhyve/vmname instead of /var/run/bhyve/checkpoint/vmname
Move BHYVE_RUN_DIR from snapshot.c to snapshot.h so it can be shared
to bhyvectl(8).
Reviewed by: jhb
Differential Revision: https://reviews.freebsd.org/D28783
struct checkpoint_op, enum checkpoint_opcodes, and
MAX_SNAPSHOT_VMNAME are not vmm specific, move them out of the vmmapi
header.
They are used for the save/restore functionality that bhyve(8)
provides and are better suited in usr.sbin/bhyve/snapshot.h
Since bhyvectl(8) requires these, the Makefile for bhyvectl has been
modified to include usr.sbin/bhyve/snapshot.h
Reviewed by: kevans, grehan
Differential Revision: https://reviews.freebsd.org/D28410
