[PATCH v5 0/5] kexec: put bzImage and ramdisk above 4G for x86 64bit

[Yinghai Lu]

On Mon, Dec 3, 2012 at 11:02 PM, H. Peter Anvin <hpa at zytor.com> wrote:
> On 12/03/2012 09:47 PM, Simon Horman wrote:
>>
>> Hi Everyone,
>>
>> there was some healthy discussion around the previous versions
>> of this series, but so far none on this version. Have we reached
>> consensus?
>>
>
> No, we haven't converged on the boot protocol yet and just respinning the
> patch set doesn't change that.

please check if you are ok with bit 15 in xloadflags.

+Field name:     xloadflags
+Type:           modify (obligatory)
+Offset/size:    0x236/2
+Protocol:       2.12+
+
+  This field is a bitmask.
+
+  Bit 0 (read): CAN_BE_LOADED_ABOVE_4G
+        - If 1, kernel/boot_params/cmdline/ramdisk can be above 4g,
+
+  Bit 15 (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.

Thanks

Yinghai