On 18.11.2020 11:14, Manuel Bouyer wrote: > On Wed, Nov 18, 2020 at 10:43:27AM +0100, Jan Beulich wrote: >> On 18.11.2020 10:28, Manuel Bouyer wrote: >>> On Wed, Nov 18, 2020 at 10:16:17AM +0100, Jan Beulich wrote: >>>> On 17.11.2020 17:40, Manuel Bouyer wrote: >>>>> On Tue, Nov 17, 2020 at 04:58:07PM +0100, Roger Pau Monné wrote: >>>>>> [...] >>>>>> >>>>>> I have attached a patch below that will dump the vIO-APIC info as part >>>>>> of the 'i' debug key output, can you paste the whole output of the 'i' >>>>>> debug key when the system stalls? >>>>> >>>>> see attached file. Note that the kernel did unstall while 'i' output was >>>>> being printed, so it is mixed with some NetBSD kernel output. >>>> >>>> Could you try to run Xen's serial port without use of any IRQ >>>> (i.e. in "polling" mode), in an attempt to avoid this unstalling >>>> (which is likely to render the resulting output at least in part >>>> meaningless)? >>> >>> It there a boot line option for that ? >> >> Yes, com<N>= has a field for this: >> >> ### com1 >> ### com2 >>> `= >>> <baud>[/<base-baud>][,[DPS][,[<io-base>|pci|amt][,[<irq>|msi][,[<port-bdf>][,[<bridge-bdf>]]]]]]` >> >> with >> >> * `<irq>` is the IRQ number to use, or `0` to use the UART in poll >> mode only, or `msi` to set up a Message Signaled Interrupt. > > thanks. > This marginally changes the boot behavior (the kenrel hangs a little bit > earlier) but switching the console input to Xen is enough to get some > interrupt, and hitting 'i' causes again the boot to complete.
That's unfortunate for the purposes here, but thanks for trying. Jan
