linux-kernel - Re: [PATCH v2 03/13] x86: Add macro for 64bit entry startup

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Message-ID: <23b6f8fe-37cd-4cbb-9c90-511dab4e5b5b@email.android.com>
Date:	Tue, 20 Nov 2012 12:44:47 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Yinghai Lu <yinghai@...nel.org>
CC:	Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...e.hu>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	linux-kernel@...r.kernel.org, Matt Fleming <matt.fleming@...el.com>
Subject: Re: [PATCH v2 03/13] x86: Add macro for 64bit entry startup_64

I don't see any point in three flags here.  Let's stick to one flag; then it fits in the existing boot_flags field.

Yinghai Lu <yinghai@...nel.org> wrote:

>On Mon, Nov 19, 2012 at 4:39 PM, Yinghai Lu <yinghai@...nel.org> wrote:
>> On Mon, Nov 19, 2012 at 3:55 PM, H. Peter Anvin <hpa@...or.com>
>wrote:
>>> We probably should add a flag for those, but that is more of a
>boot_flag...
>>
>> kernel_cap_bits:
>> RAMDISK_ABOVE_4G  = (1<<0)
>> KERNEL_ABOVE_4G =(1<<2)
>> CMD_LINE_ABOVE 4G = (1<<1)
>>                 .long   (RAMDISK_ABOVE_4G | CMD_LINE_ABOVE_4G |
>KERNEL_ABOVE_4G)
>
>more complete version:
>
>kernel_cap_bits:
>RAMDISK_ABOVE_4G  = (1<<0)
>KERNEL_ABOVE_4G =(1<<1)
>BOOT_PARAMS_ABOVE_4G=(1<<2)
>CMD_LINE_ABOVE 4G = (1<<3)
>                .long   (RAMDISK_ABOVE_4G | BOOT_PARAMS_ABOVE_4G |
>CMD_LINE_ABOVE_4G | KERNEL_ABOVE_4G)

-- 
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