On 23/07/2025 1:35 pm, Marek Marczykowski-Górecki wrote:
> Hi,
>
> There is yet another issue affecting Framework AMD... When I start a
> domU with XHCI controller attached (PCI passthrough), the whole host
> resets if there was an USB device plugged into it. I don't get any panic
> message (neither on XHCI console - which is connected to a different
> XHCI controller, nor on VGA), and the reboot reason register shows
> 0x08000800 ("an uncorrected error caused a data fabric sync flood
> event") according to [1].I checked with a contact at AMD, and "data fabric sync flood" is a final emergency reaction, and is a "stop everything" action intended to prevent further data corruption. The hardware is fatally unhappy with something... ~Andrew
