On Fri, 2011-05-20 at 12:08 +1000, Benjamin Herrenschmidt wrote: > On Thu, 2011-05-19 at 20:32 -0500, Kazutomo Yoshii wrote: > > > > Actually DMA sends invalidate requests to the snoop unit(L2 level). > > BGP SoC is a bit different from other 4xx base. > > Well, some other 44x also have a snooping L2 (more or less), but L1 is > usually the problem.
Hrm... looking at the doco you pointed me to, it looks like the L1 -is- coherent, it gets snoop kills from the L2. Ok so we do need to make this non-coherent cache stuff a runtime option (well, we need that for 440+476 too anyways so may as well do it now). As for the alignment of kmalloc, it looks like a hack that should be done in the torus code itself. Cheers, Ben. _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
