On Mon, Jan 13, 2014 at 01:02:19PM -0800, Eric Anholt wrote:
Kenneth Graunke kenn...@whitecape.org writes:
On 01/09/2014 10:03 PM, Eric Anholt wrote:
Eric Anholt e...@anholt.net writes:
Kenneth Graunke kenn...@whitecape.org writes:
The kernel doesn't even set up the aliasing PPGTT
Kenneth Graunke kenn...@whitecape.org writes:
On 01/09/2014 10:03 PM, Eric Anholt wrote:
Eric Anholt e...@anholt.net writes:
Kenneth Graunke kenn...@whitecape.org writes:
The kernel doesn't even set up the aliasing PPGTT on Sandybridge, so any
writes marked as PPGTT will likely just get
On 01/09/2014 10:03 PM, Eric Anholt wrote:
Eric Anholt e...@anholt.net writes:
Kenneth Graunke kenn...@whitecape.org writes:
The kernel doesn't even set up the aliasing PPGTT on Sandybridge, so any
writes marked as PPGTT will likely just get dropped on the floor.
The hardware bug is that
Kenneth Graunke kenn...@whitecape.org writes:
The kernel doesn't even set up the aliasing PPGTT on Sandybridge, so any
writes marked as PPGTT will likely just get dropped on the floor.
The hardware bug is that writes not marked as GTT are still looked up in
the GTT anyway.
The kernel does set
Eric Anholt e...@anholt.net writes:
Kenneth Graunke kenn...@whitecape.org writes:
The kernel doesn't even set up the aliasing PPGTT on Sandybridge, so any
writes marked as PPGTT will likely just get dropped on the floor.
The hardware bug is that writes not marked as GTT are still looked up
On Thu, Dec 12, 2013 at 01:26:37AM -0800, Kenneth Graunke wrote:
The kernel doesn't even set up the aliasing PPGTT on Sandybridge, so any
writes marked as PPGTT will likely just get dropped on the floor.
Ermh, aliasing ppgtt is enabled on snb. But the CS write stuff is broken
and will always
The kernel doesn't even set up the aliasing PPGTT on Sandybridge, so any
writes marked as PPGTT will likely just get dropped on the floor.
This begs the question: is the simple act of /requesting/ a write good
enough for the workaround, or does it need to actually work? Past
experience suggests
