On Thu, 10 Jul 2008 06:39:39 +1000 Benjamin Herrenschmidt <[EMAIL PROTECTED]> wrote:
> On Wed, 2008-07-09 at 16:22 -0400, Josh Boyer wrote: > > On Thu, 10 Jul 2008 06:02:38 +1000 > > Benjamin Herrenschmidt <[EMAIL PROTECTED]> wrote: > > > > > On Wed, 2008-07-09 at 15:44 +0200, Stefan Roese wrote: > > > > This patch enables 32bit PPC's (with 36bit physical address space, e.g. > > > > IBM/AMCC PPC44x) to run with more than 2GB of RAM. Mostly its just > > > > replacing types (unsigned long -> phys_addr_t). > > > > > > > > Tested on an AMCC Katmai with 4GB of DDR2. > > > > > > > > Signed-off-by: Stefan Roese <[EMAIL PROTECTED]> > > > > > > But DMAs will break no ? > > > > How? > > Hrm... forget it. It's fine up to 4G of RAM... (ie. as long as DMA is > below 32 bits). Right. We haven't really dealt with anything larger than 4 GiB, and we certainly aren't dealing with discontiguous DRAM due to I/O ranges. josh _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
