> Note that with bus_dmamem_alloc() you don't have to have the memory
> mapped in the kernel which saves you kernel page table descriptors.

So it could work by asking the kernel to leave untouched some part of
the memory? (it's the way it's done on Linux)

How do you tell the kernel to not use some part of the memory?

-- 
Emmanuel Dreyfus
- Quel est le meilleur moyen d'accelerer un PC?
- 9,81 m/s^2
p99dreyf@criens.u-psud.fr