On Mon, Mar 03, 2014 at 06:45:15AM +0800, Li, Aubrey wrote: > One example in my hand is, 32bit windows calls 32bit EFI firware, so > reboot works. However, I installed 64bit linux on this 32bit EFI > machine, so none of ACPI/KBD/EFI works.
Yes. The correct fix for that is to ensure that the 64-bit kernel can make 32-bit runtime services calls. > Other cases even if we figured out why ACPI/KBD/EFI don't work, we still > have to make our change in the linux kernel, because we can't change > firmware. That's correct, yes. If Windows is able to reboot the system and Linux is not, then that's a bug in the Linux kernel. > So, if you are still suggesting we add EFI only, please let me know your > plan about adding dmidecode table and if it's acceptable to add new > tables, I have three waiting: ASUS-T100, Dell Venue 8 Pro, and Dell > Venue 11 Pro. I don't think it's acceptable to add DMI entries to the reboot table. I think you should add the EFI call (since we expect that to work now), and I have no objection to adding cf9 to the end of the list if we have standard PCI io ports (Windows doesn't do it, but we can hardly make things worse). -- Matthew Garrett | [email protected] -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
