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> Yes. > > Alan loves to complain about lack of MMIO flush, but in practice this is > rarely the source of problems such as the one you describe. > > But if its broken its broken, and we need to revert. Any luck getting > benh access to the device? > Especially since reverting it will break a whole bunch of cell blades, which wouldn't be nice (those cannot do PIO and have that controller). In the meantime, we might "workaround" with a hack to only enable MMIO on those cell blades, something like: #ifdef CONFIG_PPC64 if (machine_is(cell)) mmio = 1; #endif That might get us out of the regression until we find the proper solution ? Cheers, Ben. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | |||||||||
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