Hi Greg, * Greg KH <greg@xxxxxxxxx>: > On Wed, Nov 14, 2007 at 10:37:08AM -0700, Bjorn Helgaas wrote: > > > > So I agree that the firmware kit has a clever hack that works > > on much existing x86 firmware, and it sounds like Tivoli > > might even rely on it. But I don't feel good about it, and > > it could easily break when some BIOS writer needs to make > > _SUN slightly more complicated. > > Do you know of such BIOSes out there that do this? Will the > above scheme not work for the ia64 boxes that you know of that > are out in the world today? Matthew and Bjorn have already been hinting at this, but I'd like to voice my concern as well. Even if no one is implementing _SUN as a complicated AML control method today, that is no guarantee that prevents future firmware vendors from doing so. The spec allows it, so in my opinion, pointing to existing implementations and claiming that it all just works is somewhat unfair (and scary). If/when the first vendor implements an AML version of _SUN, the firmware kit will break, and Tivoli will have to react. I was initially intrigued with you and Kristen pointed out this tool, but after thinking about it some more, I am not convinced it is a viable alternative, due to the unknown nature of future firmware implementations. Thanks. /ac - To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
