Commit Graph

2021 Commits

Author SHA1 Message Date
Sebastien Boeuf
112418d928 main: Add kernel command line support
In order to let the user choose which kernel parameters to append, the
kernel boot parameters can be now specified from the command line.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
2019-05-09 15:44:01 +02:00
Sebastien Boeuf
1270d09301 cloud-hypervisor: Add --disk option to provide VM rootfs
Based on the new virtio-blk support, this commit allows any user to
specify a --disk option in order to select the rootfs it wants to
use for the VM.

For now it assumes the partition 3 /dev/vd3 is the one where we can
find the rootfs.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
2019-05-08 08:55:09 +02:00
Sebastien Boeuf
b67e0b3dad vmm: Use virtio-blk to support booting from disk image
After the virtio-blk device support has been introduced in the
previous commit, the vmm need to rely on this new device to boot
from disk images instead of initrd built into the kernel.

In order to achieve the proper support of virtio-blk, this commit
had to handle a few things:

  - Register an ioevent fd for each virtqueue. This important to be
    notified from the virtio driver that something has been written
    on the queue.

  - Fix the retrieval of 64bits BAR address. This is needed to provide
    the right address which need to be registered as the notification
    address from the virtio driver.

  - Fix the write_bar and read_bar functions. They were both assuming
    to be provided with an address, from which they were trying to
    find the associated offset. But the reality is that the offset is
    directly provided by the Bus layer.

  - Register a new virtio-blk device as a virtio-pci device from the
    vm.rs code. When the VM is started, it expects a block device to
    be created, using this block device as the VM rootfs.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
2019-05-08 08:55:09 +02:00
Chao Peng
80ac3a84bb qcow: Add qcow support
Extracted from crosvm (commit:f82d632), with clippy fixes.

Signed-off-by: Chao Peng <chao.p.peng@linux.intel.com>
2019-05-08 08:55:09 +02:00
Chao Peng
2a539ab176 vmm: Expose Hypervisor CPUID bit
This is required at least for kvm-clock.

Signed-off-by: Chao Peng <chao.p.peng@linux.intel.com>
2019-05-08 08:55:06 +02:00
Samuel Ortiz
0adc3481df vmm: Add PCI root
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2019-05-08 08:55:06 +02:00
Sebastien Boeuf
342bdc3619 devices: Add support for i8042 reset device
Introduce emulation of i8042 device to allow the guest to stop the
VM by issuing a reset event.

The device has been copied over from the Crosvm code base, relying on
the commit 0268e26e1ac9e09aa51d733482c5df139cd8d588.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
2019-05-08 08:55:00 +02:00
Sebastien Boeuf
29b90a8aee vmm: Create and handle an exit event
An exit event is required to be created and handled for the purpose
of letting the guest kernel stop the VM.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
2019-05-08 08:40:42 +02:00
Sebastien Boeuf
afbf824a48 vmm: Handle stdin from a generic epoll loop
Instead of handling stdin in its own separate loop, we use a generic
one that can be reused for other events handling.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
2019-05-08 08:40:42 +02:00
Samuel Ortiz
a7bdf5ee48 vmm: Register an irqfd for our serial device
And get console input working.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2019-05-08 08:40:42 +02:00
Samuel Ortiz
c6c5e10a04 vmm: Add a basic stdin loop
After starting all vCPUs, we loop for STDIN input.
We need a more scalable eventfd control loop, obviously.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2019-05-08 08:40:42 +02:00
Samuel Ortiz
0b6ec34505 vmm: Retry running a CPU when getting EAGAIN or EINTR from the run ioctl
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2019-05-08 08:40:42 +02:00
Samuel Ortiz
25f4063da6 cloud-hypervisor: Add the --memory option
You guessed it: To specify the amount of memory for the VM.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2019-05-08 08:40:42 +02:00
Samuel Ortiz
59b5e53c40 cloud-hypervisor: Add the --cpus option
You guessed it: To specify the number of vcpus.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2019-05-08 08:40:42 +02:00
Samuel Ortiz
1853b350ee cloud-hypervisor: Add devices crate
Based on the Firecracker devices crate from commit 9cdb5b2.

It is a trimmed down version compared to the Firecracker one, to remove
a bunch of pulled dependencies (logger, metrics, rate limiter, etc...).

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2019-05-08 08:40:42 +02:00
Samuel Ortiz
7e2d1aca2d vmm: Boot kernel
Our command line was not copied properly since we were not allocating
enough space for it.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2019-05-08 08:40:42 +02:00
Samuel Ortiz
044f664135 vmm: Set CPUID
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2019-05-08 08:40:42 +02:00
Samuel Ortiz
0921cfb8f8 vmm: Basic Vcpu implementation
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2019-05-08 08:40:38 +02:00
Samuel Ortiz
539367b58c cloud-hypervisor: Initial kernel booting implementation
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2019-05-07 18:49:51 +02:00
Samuel Ortiz
a0da3deb5e cloud-hypervisor: Call into the test_vm() routine
test_vm is a dummy VM workload, we use it to test our initial VMM
settings.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2019-05-07 16:06:21 +02:00
Samuel Ortiz
16f2bedbb7 cloud-hypervisor: Add a vmm crate
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2019-05-07 16:03:24 +02:00