On Fri, Oct 1, 2010 at 5:12 PM, <a...@linux-foundation.org> wrote: > From: FUJITA Tomonori <fujita.tomon...@lab.ntt.co.jp> > > Signed-off-by: FUJITA Tomonori <fujita.tomon...@lab.ntt.co.jp> > Cc: Benjamin Herrenschmidt <b...@kernel.crashing.org> > Signed-off-by: Andrew Morton <a...@linux-foundation.org> > --- > > arch/powerpc/Kconfig | 3 +++ > 1 file changed, 3 insertions(+) > > diff -puN > arch/powerpc/Kconfig~powerpc-enable-arch_dma_addr_t_64bit-with-arch_phys_addr_t_64bit > arch/powerpc/Kconfig > --- > a/arch/powerpc/Kconfig~powerpc-enable-arch_dma_addr_t_64bit-with-arch_phys_addr_t_64bit > +++ a/arch/powerpc/Kconfig > @@ -16,6 +16,9 @@ config WORD_SIZE > config ARCH_PHYS_ADDR_T_64BIT > def_bool PPC64 || PHYS_64BIT > > +config ARCH_DMA_ADDR_T_64BIT > + def_bool ARCH_PHYS_ADDR_T_64BIT > +
I seemed to have missed what this is about entirely. Is there some place I can look that describes what that is supposed to do? The PPC 4xx boards set PHYS_ADDR_T_64BIT because the MMU uses 36 bit addressing, but the CPU is only 32 bits. I want to make sure this DMA thing isn't going to cause problems. josh _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
