https://bugzilla.kernel.org/show_bug.cgi?id=215906 Michał Pecio (michal.pecio@xxxxxxxxx) changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |michal.pecio@xxxxxxxxx --- Comment #20 from Michał Pecio (michal.pecio@xxxxxxxxx) --- By a complete accident I found that VL805 has a known bug where it overfetches transfer rings: https://github.com/raspberrypi/linux/issues/4685 Rolf, there is a workaround for similar bug in Zhaoxin hardware which may solve your IOMMU faults. Update to at least v6.6, or the latest v6.12 series if it's not a problem. Run the following (if using a USB keyboard put it all in a script): rmmod xhci_pci rmmod xhci_hcd modprobe xhci_hcd quirks=0x200000000000 modprobe xhci_pci Verify that it worked: dmesg |grep quirks [122123.422469] xhci_hcd 0000:08:00.0: hcc params 0x002841eb hci version 0x100 quirks 0x0000200000000890 ^-- here And see if it helps. -- You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.
