[syslinux] Only 2.5G of RAM available then syslinux64.efi boots 32-bit linux 686-pae

[Andrey Plankin]

Hello,

I'm booting linux-3.16-686-pae kernel (32-bit) via syslinux.efi 64-bit version.
After boot linux sees only 2.5G of RAM while system has 32G installed.

If I boot the same kernel with GRUB64 efi instead of syslinux 
then amount of RAM available to linux is 32G.

Is this a bug or I'm missing something?

syslinux.cfg:

label live-686-pae
        menu label Linux (686-pae)
        menu default
        linux /live/vmlinuz
        initrd /live/initrd.img
        append boot=live config persistence username=user live-config.utc=no acpi_osi=Linux live-config.noautologin


Current git: e0be4d87135

Regards,
Andrey