On Fri, Oct 1, 2010 at 5:12 PM, <[email protected]> wrote: > From: FUJITA Tomonori <[email protected]> > > Signed-off-by: FUJITA Tomonori <[email protected]> > Cc: Benjamin Herrenschmidt <[email protected]> > Signed-off-by: Andrew Morton <[email protected]> > --- > > 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 [email protected] https://lists.ozlabs.org/listinfo/linuxppc-dev
