On Sun, 24 Apr 2016, Maciej W. Rozycki wrote: > > The thing > > I am struggling with at the moment is getting sys$crmpsc_pfn_64 to work so I > > can use C to test the NVRAM. I seem to have a problem with the service > > writing back the address and length, but I don't yet know why. > > That's beyond my abilities I'm afraid, can't help.
Ah, BTW, a general note: make sure you request an uncached mapping, if your interface has such control, mark your pointers `volatile' and use appropriate synchronisation barriers between accesses. Maciej