> Yes, you can't DMA to VDSO VMA I don't think. Why not? It's just RAM... I agree it's not a sensible thing to do though. > > It seems that in kernel 2.6.20-rc5 the last VMA which has a read > > permission is the [vdso] section but when i try > > to register it i get a failure. What's the failure? - R.