[vfio-users] uas drives connected to passed-through xhci controller hang in Windows guest
Tom Yan
tom.ty89 at gmail.com
Mon Aug 31 13:13:15 UTC 2020
Hi,
I've been having issues with uas (usb attached scsi) drive that is
connected to a pci passed-through xhci controller (ASM1142). The drive
hangs and cannot really be used. The combination seems to work fine on
bare-metal. bot/msc drives work fine.
I tried to install the XHCI driver from ASMedia to see if it makes a
difference. It ends up disabling uas. Not sure if that would happen on
bare-metal as well.
I saw https://github.com/torvalds/linux/commit/ec37198acca7b4c17b96247697406e47aafe0605
today and I wonder if vfio-pci needs to be "notified" as well. Never
tried passing through another XHCI controller.
Can anyone confirm the issue is vendor/device-specific? Any idea on
how to further debug this?
Regards,
Tom
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