Re: [patch] x86: Introduce BOOT_EFI and BOOT_CF9 into the reboot sequence loop

[H. Peter Anvin]

On 02/27/2014 10:54 PM, Li, Aubrey wrote:
> On 2014/2/28 14:44, Matthew Garrett wrote:
>> On Fri, Feb 28, 2014 at 02:39:56PM +0800, Li, Aubrey wrote:
>>
>>> Just let you know, Windows8.1 calls EFI on these boxes for reboot/shutdown.
>>
>> Ok, in that case we should add EFI reboot to the list once Matt's 1:1 
>> mapping support has landed. The right place to try it is probably after 
>> the second attempt to perform an ACPI reboot. I'm still not enthusiastic 
>> about adding cf9 by default.
>>
> 
> I'll defer to you if no one on the list supports me to add cf9.
> 

I believe we *had* it in the default list for a while, and it caused
hangs on some systems.

	-hpa


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