Linaro Introduces Buffer Sharing Mechanism

[phoronix]

Phoronix: Linaro Introduces Buffer Sharing Mechanism

There's been a Linaro memory management working group for the past year to figure out memory management APIs and unify the memory management landscape for Linux graphics. One of the fruits of this work is now a DMA buffer sharing mechanism that was put out by Texas Instruments...

http://www.phoronix.com/vr.php?view=MTAwMDM

[FireBurn]

Is there a chance this might be useful for multi-GPU setups?

[agd5f]

Is there a chance this might be useful for multi-GPU setups?

Yes, it is.

[FireBurn]

Whoop whoop whoop

Switcheroo doesn't work with my new laptop, I'm impatiently waiting to see the r600g improvements on my 6630M

[Veerappan]

Yes, it is.

Would I be correct in assuming that the buffer sharing between drivers could also be useful for run-time switching between an integrated GPU and a discrete GPU?

[agd5f]

Would I be correct in assuming that the buffer sharing between drivers could also be useful for run-time switching between an integrated GPU and a discrete GPU?

It's only part of the puzzle. This API just allows you to share dma pages between device drivers. You still need to fix X/wayland/whatever to decouple rendering and display and provide an API to handle switching, selecting a different renderer, etc.