Re: [PATCH 10/10] x86, ACPI: default to reboot via ACPI (again)

H. Peter Anvin
2008-11-13T05:27:34Z

Zhao Yakui wrote:
> Maybe the 0xCF9 port is defined for NVidia, SiS and Several others
> vendor. But we can't say that it is appropriate for most boxes.
> Of course IMO it is not a generic solution for reboot.
> At the same time the value written to the 0xCF9 I/O port should not be a
> fixed value. Maybe it varies on different vendors/chipset. Even the
> value will vary on the boxes from different BIOS vendors although the
> boxes are based on the same chipset.
> And the value should be provided by BIOS. If BIOS doesn't provide
> the above info, it is not safe to use them.

We all agree that we should try to get the ACPI stuff to work as the
first instance. **THAT IS ALL THE HELP WE WILL GET FROM THE BIOS**.
Now, it isn't working. Now what do you do?

In short, unless you have anything concrete to add to this discussion,
please stop pontificating.

-hpa