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

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Message-ID: <CAE9FiQVrjRvQYNDdJFcyDFrr88B6v-86Zdq5a15kdHN_byDG3g@mail.gmail.com>
Date:	Tue, 20 Nov 2012 11:20:37 -0800
From:	Yinghai Lu <yinghai@...nel.org>
To:	"H. Peter Anvin" <hpa@...or.com>
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

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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