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Tegra Binary Driver and Memory Carve-Out


The default Tegra memory carve-out is 64MB. But my
Xorg.0.log says:

(--) TEGRA(0): VideoRAM: 32768 kByte

tegra_drv.so does not understand a "VideoRAM" option.

I tried experimenting with reclaiming some memory from
the top 64MB with the Tegra driver loaded, and Xorg
crashes instantly if this is attempted (62MB memory
reclaim works fine with fbdev_drv.so).

Does anybody know what is eating those other 32MB of
RAM if the tegra_drv.so is only using 32MB? I tried
playign with the nvmem parameter but that seems to
get ignored on everything but the most ancient of AC100