Hello,
I would like to know if there is any way to partition an USB hub between cells.
1. From what I understand, the USB Controller would need to be a shared PCI
device, as it would be used by all of the cells that would need access to the
hub.
2. Even if it is possible to share an USB controller, is there any way to
guarantee exclusive cell access to an USB device connected to a hub?
3. If any of the previous statements are applicable, how does jailhouse handle
these interactions?
4. If 1 and/or 2 are not possible, is there any other way I can extend the
number of USB devices I can connect to a board with few ports, and be able to
assign them to different cells?
+------+ +------+
+------+ Cell | | Cell +-------+
| +------+ +------+ |
| |
| +------+ +------+ |
| | USB | | USB | |
+-> |Device| |Device| <--+
| | | |
+--+---+ +--+---+
| |
| +---------+ |
+-+ USB Hub +--+
+---+-----+
|
+----+-----+
| Single |
| USB Port |
+----------+
Thank you,
Pedro Chaves.
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