On Tue, Nov 09, 2021 at 09:00:05AM +0100, Heinrich Schuchardt wrote: [snip] > > I am still puzzled about this, if I read the UEFI spec correctly, the > > 5 minutes watchdog timer is for EFI applications using boot services? > > So grub, for instance. But the description of ExitBootServices tells me > > that the: "boot services watchdog timer is disabled"? > > So it should not affect Linux booting (after the EFI stub is done)? > > Currently we only disable the software watchdog (efi_tpl = TPL_HIGH_LEVEL;) > We should call wdt_stop_all() too. I will create a patch for that.
Lets use this as a chance to bring up the issue with the relevant part of the UEFI forum. Turning off a running watchdog is a bad idea in places where Arm is pushing SystemReady IR (and I would argue other specs as well, but..). -- Tom
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