Re: [PATCH 3/8] add mem64_min/max control

H. Peter Anvin
2012-11-17T20:54:53Z

On 11/17/2012 12:51 PM, Yinghai Lu wrote:
> On Sat, Nov 17, 2012 at 12:41 PM, H. Peter Anvin <hpa@zytor.com> wrote:
>> Sorry, with "real mode" are we talking about struct boot_params or the actual realmode trampoline? The latter needs to be < 640K as a hw requirement.
>
> boot_params.
>
> when kexec bzImage64, kexec will copy that from bzImage file, and
> update it....and
> pass pointer to arch/x86/boot/compressed/head_64.c via %rsi
>

Right, that's fine, of course.

We should make sure there aren't any implicit 32-bit assumptions
there... there really shouldn't need to be.

-hpa

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