crosvm/aarch64/src
Dmytro Maluka d98e20b908 crosvm: Preserve platform devices in RunnableLinuxVm
If a vfio-platform device has no mmio regions, it is unexpectedly
destroyed at startup (in particular, its vfio device fd is unexpectedly
closed, so its interrupt forwarding stops working, etc) since in
generate_platform_bus() arced_dev is not added to mmio_bus so there are
no more references to the device. To fix this issue, preserve references
to platform devices also in platform_devices field of RunnableLinuxVm.

BUG=b:197169350
TEST=Use vfio-platform for passthrough of a device with interrupts but
without mmio regions, e.g. touchpad on Brya, and check if it works in
the VM (i.e. its interrupts are successfully delivered).

Change-Id: I4042c5508ef6b69649c7d20962edf61b735abc03
Reviewed-on: https://chromium-review.googlesource.com/c/crosvm/crosvm/+/3820043
Commit-Queue: Dmytro Maluka <dmaluka@google.com>
Tested-by: Dmytro Maluka <dmy@semihalf.com>
Reviewed-by: Daniel Verkamp <dverkamp@chromium.org>
2022-08-26 08:41:37 +00:00
..
fdt.rs vmwdt: Update the fdt node 2022-07-28 08:59:30 +00:00
lib.rs crosvm: Preserve platform devices in RunnableLinuxVm 2022-08-26 08:41:37 +00:00