How to increase CMA memory for OpenGL ?

[NahanniV]

ops sorry, I guess you are running the beta kernel. The stable is 4.14.98

I'm trying to figure out how to change the CMA memory size to see if that makes any difference.
I still have memory available.

Perhaps you might know ?

When I look at 

Code:

/boot/cmdline.txt
dwc_otg.lpm_enable=0 console=serial0,115200 console=tty1 root=/dev/mmcblk0p7 rootfstype=ext4 elevator=deadline fsck.repair=yes rootwait

I see something different from what gets reported at boot in dmesg:

Code:

[    0.000000] Kernel command line: 8250.nr_uarts=0 cma=256M bcm2708_fb.fbwidth=1024 bcm2708_fb.fbheight=768 bcm2708_fb.fbswap=1 vc_mem.mem_base=0x3ec00000 vc_mem.mem_size=0x40000000  dwc_otg.lpm_enable=0 console=ttyS0,115200 console=tty1 root=/dev/mmcblk0p7 rootfstype=ext4 elevator=deadline fsck.repair=yes rootwait
[

Where is that coming from ?
Thanks,
JM.