On 17.10.26 13:55, Hung-Chun Tseng wrote:
> Hi Jan,
>
> On Thu, Oct 15, 2026 at 04:22:21PM +0200, Jan Kiszka wrote:
>> The only watchdog QEMU offers us on non-x86 virt platforms is the
>> i6300esb. This one is PCI-attached, but watchdog probing will happen
>> before PCI, so will miss it. Redo this late so that we gain autostart
>> support.
>
> I tested the whole series on qemu-riscv64_smode_defconfig with WDT,
> WATCHDOG and WDT_I6300ESB enabled and WATCHDOG_TIMEOUT_MSECS=5000, on
> QEMU 11.1.2 with "-M virt -device i6300esb":
>
> - the watchdog autostarts ("WDT: Started i6300esb_wdt with servicing
> every 1000ms (5s timeout)") and the machine stays up while idle at
> the prompt
> - "go" to an endless loop resets the machine after about 5 s
> - "wdt stop" followed by the same loop: no reset
> - without "-device i6300esb": no WDT output and no change in behaviour
> - with only 1/3 and 2/3 applied, the device shows up in "wdt list" but
> is never started, so this patch is what makes autostart work
>
> I did not test qemu-arm.
>
> Reviewed-by: Hung-Chun Tseng <[email protected]>
> Tested-by: Hung-Chun Tseng <[email protected]> # qemu-riscv64 S-mode
>
> Thanks,
> Hung-Chun
Thanks for checking and for the review comments! I'll send out v4 with
those addressed soon.
Jan
--
Siemens AG, Foundational Technologies
Linux Expert Center
