On 13.11.2013 04:59, Andrey Borzenkov wrote:
> В Tue, 12 Nov 2013 18:26:39 -0800
> Josh Triplett <josh@joshtriplett.org> пишет:
> 
>> EFI supports allocating memory below a specified address; use that to
>> implement GRUB_MMAP_MALLOC_LOW by requesting memory below 1M.
> 
> Out of curiosity - why would you need it on EFI? Your patch does not
> add any consumer of GRUB_MMAP_MALLOC_LOW and on EFI notion of low
> memory should not exist?
> 
As discussed on IRC, it's for starting other CPUs, for this you need a
vector in low memory as cpus always start in real mode.