Re: [PATCH 1/4] X86: Revamp reboot behaviour to match Windows more closely

[Rafael J. Wysocki]

On Friday, March 11, 2011, Matthew Garrett wrote:
> On Fri, Mar 11, 2011 at 11:08:18PM +0100, Rafael J. Wysocki wrote:
> > On Friday, March 11, 2011, Matthew Garrett wrote:
> > > Windows reboots by hitting the ACPI reboot vector (if available), trying
> > > the keyboard controller, hitting the ACPI reboot vector again and then
> > > giving the keyboard controller one last go. Rework our reboot process a
> > > little to default to matching this behaviour, although we'll fall through
> > > to attempting a triple fault if nothing else works.
> > 
> > Does this fix a particular problem observed in practice?
> 
> Yup. We're seeing an increasing number of machines that don't implement 
> the legacy keyboard controller at all and fail to reboot if you poke it. 
> The expectation appears to be that you use the ACPI reboot vector on 
> these machines.

So perhaps you can put a pointer or two into the changelog?  That would
show precisely that it's not just for pure Windows compatibility.

Thanks,
Rafael
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