On Wed, 17 Apr 2019 at 11:23, Ingo Molnar <mingo@xxxxxxxxxx> wrote: > > > * Prakhya, Sai Praneeth <sai.praneeth.prakhya@xxxxxxxxx> wrote: > > > I will ask around internally to check if it is a good idea to make EFI > > reboot the default method when the machine is booted in EFI mode. > > Or whether there's some robust signature that indicates "modern EFI > system where EFI reboot is the primary method"? > > Major EFI version or ACPI version or such? > I am actually at Microsoft right now, and I managed to get clarification on how Windows deals with this: Windows will attempt to use ACPI reboot first, and will only attempt to use anything else if that fails. EFI reset is actually its least preferred option, and so it is highly likely that it is untested on most of the shipping x86 hardware if any of the other methods work. So let's not touch this.
