On Wed, 2010-11-17 at 16:03 -0600, steven@teradyne.com wrote:
My application needs a fast way to access a specific physical DDR
memory region. The application runs on an MPC8548 PowerPC which has an
MMU. I've tried two approaches that are typical for Linux, mmap() and
using a kernel module
On Wed, 2010-11-17 at 16:03 -0600, steven@teradyne.com wrote:
My application needs a fast way to access a specific physical DDR
memory region. The application runs on an MPC8548 PowerPC which has
an
MMU. I've tried two approaches that are typical for Linux, mmap()
and
using a kernel
On Thu, Nov 18, 2010 at 11:24:22PM +1100, Michael Ellerman wrote:
On Wed, 2010-11-17 at 16:03 -0600, steven@teradyne.com wrote:
My application needs a fast way to access a specific physical DDR
memory region. The application runs on an MPC8548 PowerPC which has an
MMU. I've tried two
Re: application needs fast access
to physical memory
On Thu, 18 Nov 2010 10:55:21 -0600
steven@teradyne.com wrote:
Thanks for the replies.
In the Linux Device Drivers book regarding mmap(), it states:
Mapping a device means associating a range of user-space addresses to
device memory.
Whenever the program reads or writes in
On Thu, 18 Nov 2010 14:46:16 -0600
steven@teradyne.com wrote:
Hello Scott,
Do you know whether this patch is necessary if I were to use alloc_bootmem
() (to set aside a region of contiguous physical memory) instead of the
kernel parameter mem=256?
It should not be needed in that case.
mich...@ellerman.id.au,
linuxppc-dev@lists.ozlabs.org
Subject
Re: application needs fast access
