On Sat, Nov 24, 2012 at 2:32 PM, H. Peter Anvin <hpa@zytor.com> wrote:
> On 11/24/2012 02:18 PM, Yinghai Lu wrote:

> Well, that solves the problem for *this specific instance* but I fear
> therein lies madness in the general case.
>

use

   Bit 0 (read): CAN_BE_LOADED_ABOVE_4G
         - If 1, kernel/boot_params/cmdline/ramdisk can be above 4g,
                 set by kernel.

   Bit 1 (write): USE_EXT_BOOT_PARAMS
         - If 1, set by bootloader, and kernel could check new fields
in boot_params
                  that are added from 2.12 safely.