This device provides the ability to notify the kernel via interrupt that
there is some new hotplug activity. The type is determined by reading
from the I/O port.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This is necesary to be able easily translate an Interrupt to a
VirtioInterrupt which is already Sync.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Put the ACPI support behind a feature and ensure that the code compiles
without that feature by adding an extra build to Travis.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Add an I/O port "device" to handle requests from the kernel to shutdown
or trigger a reboot, borrowing an I/O used for ACPI on the Q35 platform.
The details of this I/O port are included in the FADT
(SLEEP_STATUS_REG/SLEEP_CONTROL_REG/RESET_REG) with the details of the
value to write in the FADT for reset (RESET_VALUE) and in the DSDT for
shutdown (S5 -> 0x05)
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
The goal for cloud-hypervisor is to keep the host safe. With this in
mind, we want to emulate as much as possible in userspace instead of
in kernel directly.
The IOAPIC is a good candidate to move from kernel to userspace, which
is why this commit introduces a userspace implementation of the IOAPIC
82093AA based on the documentation:
https://pdos.csail.mit.edu/6.828/2016/readings/ia32/ioapic.pdf
This code is inspired from the files devices/src/ioapic.rs and
devices/src/split_irqchip_common.rs from the crosvm codebase. The
reference version used being 6c1e23eee3065b3f3d6fc4fb992ac9884dbabf68.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This commit anticipate the future need from having support for both
in kernel and userspace IOAPIC. The way to signal an interrupt from
the serial device will vary depending on the use case, but this should
be independent from the serial implementation itself.
That's why this patch provides a generic trait for the serial device
to call from, so that it can trigger interrupts independently from the
IOAPIC type chosen (in kernel vs userspace).
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Add the BSD and Apache license.
Make all crosvm references point to the BSD license.
Add the right copyrights and identifier to our VMM code.
Add Intel copyright to the vm-virtio and pci crates.
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
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>
