Opened 17 months ago
Last modified 3 days ago
#884 new defect
Sometimes spurious IRQ 11 when restaring in Qemu
| Reported by: | Jiri Svoboda | Owned by: | |
|---|---|---|---|
| Priority: | major | Milestone: | 0.16.1 |
| Component: | helenos/unspecified | Version: | mainline |
| Keywords: | Cc: | ||
| Blocker for: | Depends on: | ||
| See also: |
Description
When restarting the system in Qemu I sometimes get spurious interrupt (seems to come from USB tablet?) / IRQ 11 (i.e., the system hangs). This is despite that we try to quiesce USB HCI.
Change History (3)
comment:1 by , 17 months ago
| Milestone: | 0.14.2 → 0.15.1 |
|---|
comment:3 by , 3 days ago
tools/ew.py sets up XHCI by default. For XHCI in hc_quiesce() we were stopping the HC, but not resetting it nor disabling interrupts in the controller registers. For comparison, we reset OHCI, UHCI and EHCI host controllers in hc_quiesce().
See changeset 1c6cb595c1b05dd68268fad2a8ebb64bf31e23b1.
I modified XHCI's hc_quiesce() to disable controller interrupts. Let's see if it helps. Since this problem sometimes happens very often and other times quite seldom, I am not 100% sure if this fixes it. So let's wait for some time and see.
Milestone renamed