Re: [Qemu-discuss] qemu-system-arm linux guest reboot sometimes hangs

[Peter Maydell]

On 19 October 2018 at 07:43, Jaap Crezee <address@hidden> wrote:
> On 10/16/18 11:39, Peter Maydell wrote:
>>
>> There is a race condition I discovered recently for TCG guests where
>> occasionally a request for a system reset is lost. It may be you're
>> running into that. We don't have a patch for it yet, but when we
>> do I'll cc you so you can test it, if you like.
>
>
> I seem to be also experiencing a similar issue with qemu-system-aarch64,
> could that also be related?
>
> Jenkins output:
>
> 01:00:47 [    0.432377] Serial: AMBA PL011 UART driver
> 01:00:47 [    0.486165] 9000000.pl011: ttyAMA0 at MMIO 0x9000000 (irq = 39,
> base_baud = 0) is a PL011 rev1
> 01:00:47 [    0.497562] console [ttyAMA0] enabled
> Cancelling nested steps due to timeout
> 01:15:33 Sending interrupt signal to process
>
> Normally the boot continues beyond this point.

No, that looks different. The race condition I know about
only triggers when the guest specifically requests a
reset or shutdown.

For that one you'd probably need to investigate to find out exactly
what the guest is timing out on, and what its timeout is.

thanks
-- PMM