On Mon, 2006-07-31 at 22:40 +0930, Phil Nitschke wrote: > (I go no replies last week, so I'll try again, with less explanation...) > > If I master a DMA from a PCI device into a main memory buffer allocated > with dma_alloc_noncoherent(), I need to synchronise the destination > buffer using dma_sync_single_range_for_xxx() before and after the DMA. > > But if the buffer is a very large chunk of memory (reserved at boot > time) which has been ioremap()-ed into the virtual address space, do I > need to still synchronise that memory?
Maybe it's a better question for the linux-kernel list? Lee
