On 07/31/2010 11:32 AM, Cyrill Gorcunov wrote:
>>
>> No, this is the internal part of the boot protocol, so it's not an issue.
>>
> 
> Peter, I didn't mean any issue here, I meant that bootloaders don't know about
> this field yet and they will have to update own sources to pass port value
> at proper place of boot params. Or I miss something?
> 

Boot loaders that use the 16-bit entry point are unaffected.

Boot loaders which use the 32-bit entry point but properly clears the
zero page simply will not have the feature.

Boot loaders which use the 32-bit entry point but doesn't clear the zero
page are broken.

	-hpa

-- 
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.