On Wed, Mar 9, 2016 at 11:16 AM, Ran Shalit <ranshalit@xxxxxxxxx> wrote: > Hello, > > I have some sample code which uses 2 test application: > 1. test application in kernel , which allocates buffer using kmalloc > (GFP_KERNEL) > 2. test application in userspace which allocates buffer using malloc just to add that in the case (2) of userspace, the kernel driver use copy_from_user before dma transfer. > > In both cases the buffers are DMA through PCI. > I don't understand how is it that the buffers are allocated with > malloc/kmalloc for DMA. > Is there any idea ? > > Regards, > Ran _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
