Re: [PATCH] reserve_early end-of-conventional-memory to 1MB

H. Peter Anvin
2008-02-25T21:18:19Z

Alexander van Heukelum wrote:
>
> Hello hpa,
>
> I failed to find a comment referring to 0x413 or int 0x12 in
> arch/x86/kernel. I do know the comment in Documentation/i386/boot.txt,
> however, suggesting that "INT 12h" _should_ be used, but that it would
> be pointless for zImage and old bzImage kernels, because they _have_
> to be started from 0x90000 anyway. New bzImage kernels do not have
> this limitation, and smart bootloaders simply put them at much
> lower addresses, like 0x40000. (I know: you know.) My point is just
> that the argument not to use 0x413 in the bootloader is not valid
> for this case.
>

OK, let me see if I can dig up the comment I thought I found at one
point, and maybe found out the history behind it. Either that, or find
out that my memory is faulty ;)

-hpa