linux-kernel - Re: [patch] x86: Introduce BOOT_EFI and BOOT

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Date:	Mon, 03 Mar 2014 09:36:02 +0800
From:	"Li, Aubrey" <aubrey.li@...ux.intel.com>
To:	"H. Peter Anvin" <hpa@...or.com>,
	Matthew Garrett <mjg59@...f.ucam.org>
CC:	"H. Peter Anvin" <hpa@...ux.intel.com>,
	"alan@...ux.intel.com" <alan@...ux.intel.com>,
	linux-kernel@...r.kernel.org, Len.Brown@...el.com,
	Adam Williamson <awilliam@...hat.com>
Subject: Re: [patch] x86: Introduce BOOT_EFI and BOOT_CF9 into the reboot
 sequence loop

On 2014/3/3 8:18, H. Peter Anvin wrote:
> On 03/02/2014 04:07 PM, Matthew Garrett wrote:
>> On Mon, Mar 03, 2014 at 07:23:06AM +0800, Li, Aubrey wrote:
>>
>>> Windows doesn't do because there is no 32/64 mixed windows and EFI on
>>> the planet. Since the silicon is actually 64 bit, I failed to see a
>>> reason to refuse the user install 64bit linux on it. So we encountered a
>>> case windows didn't.
>>
>> And we'll call the 32 bit EFI call, so what's the problem?

No problem after Fleming's mixed mode is landed.

>>
>>> So, you didn't mention BOOT_BIOS, if you don't want to add BOOT_BIOS,
>>> and you also don't like DMI entires, how do you want to deal with the
>>> machines requiring BOOT_BIOS to reboot their machine?
>>
>> I was planning on ignoring them.
>>

Well, I'm fine to ignore BOOT_BIOS because I don't have one in hand, but
I'll bother you again with the same logic when I have one, heihei.
Do you need me to refine the patch to remove BOOT_BIOS?

> 
> I suspect we'll never get away from having a DMI table, if nothing else
> because we can't test enough, but the current situation where it seems
> like we need to add every since Dell box to the DMI table is clearly broken.
> 
> 	-hpa
> 
Agree, definitely.

Thanks,
-Aubrey
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