Rusty Russell wrote:
> On Saturday 27 October 2007 03:29:04 Eric W. Biederman wrote:
>
>> The kernel only ever supports 1 version of the boot protocol
>> so there is no need to check the boot protocol revision to
>> see if a feature is supported.
>>
>
> OK, I'm completely confused, so this is probably a v. dumb question. Doesn't
> this boot header come from the boot loader?
No, other way around. It the kernel telling the bootloader "I
understand boot protocol X", and the bootloader makes sure it doesn't
fill out more than X allows. If the bootloader supports <X, then the
kernel's boot_params structure is pre-constructed with reasonable
default values.
J
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