Re: [tip:x86/boot] x86/boot/compressed/64: Prepare trampoline memory

[Cyrill Gorcunov]

On Mon, Feb 26, 2018 at 11:02:56AM +0300, Kirill A. Shutemov wrote:
...
> > Also, could do a puts() hexdump of the affected memory area _before_ we overwrite 
> > it? Is it empty? Could we add some debug warning that checks that it's all zeroes?
> 
> The problem is that we don't really have a way get a message out of there.
> 
> http://lkml.kernel.org/r/793b9c55-e85b-97b5-c857-dd8edcda4081@xxxxxxxxx
> 

I'm sorry for stepping in (since I didn't follow the series in details)
but can't we use vga memory here and print this early data tere?