On Mon, Nov 15, 2010 at 9:16 AM, Kumar Gala <ga...@kernel.crashing.org> wrote:
> The programming model (if you look at the free-space in the registers and > data structures) supports a 64-bit address. I'm trying to avoid changing the > driver in the future if we have >36-bit. However this is such a minor worry > that I'll stop and just ack the patch as is. I must still be missing something. I'm looking at the description of the SATR register in the MPC8572 RM, and it shows this: 0 - 3 | 4 - 5 | 6 | 7 | 8 - 11 | 12 - 15 | 16-21 | 22-31 --- | STFLOWLVL | SPCIORDER | SSME | STRANSINT | SREADTTYPE | --- | ESAD The most that we can extend ESAD to is 16 bits, for a total of a 48-bit physical address. Where are the other 16 bits supposed to go? -- Timur Tabi Linux kernel developer at Freescale _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
