Mesa (master): nvc0: reduce likelihood of collision for real buffers on Kepler

[Samuel Pitoiset]

Module: Mesa
Branch: master
Commit: 7797d5f7d9b367f96200093cbe166c4478eae65e
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=7797d5f7d9b367f96200093cbe166c4478eae65e

Author: Samuel Pitoiset <samuel.pitoiset at gmail.com>
Date:   Mon Feb 22 21:44:25 2016 +0100

nvc0: reduce likelihood of collision for real buffers on Kepler

Reduce likelihood of collision with real buffers by placing the
hole at the top of the 4G area. This fixes some indirect draw+compute
tests with large buffers.

Suggested by Ilia Mirkin.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset at gmail.com>
Reviewed-by: Ilia Mirkin <imirkin at alum.mit.edu>

---

 src/gallium/drivers/nouveau/nvc0/nve4_compute.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/gallium/drivers/nouveau/nvc0/nve4_compute.c b/src/gallium/drivers/nouveau/nvc0/nve4_compute.c
index b1450f8..04ede3e 100644
--- a/src/gallium/drivers/nouveau/nvc0/nve4_compute.c
+++ b/src/gallium/drivers/nouveau/nvc0/nve4_compute.c
@@ -96,9 +96,9 @@ nve4_screen_compute_setup(struct nvc0_screen *screen,
     *  accessible. We cannot prevent that at the moment, so expect failure.
     */
    BEGIN_NVC0(push, NVE4_CP(LOCAL_BASE), 1);
-   PUSH_DATA (push, 1 << 24);
+   PUSH_DATA (push, 0xff << 24);
    BEGIN_NVC0(push, NVE4_CP(SHARED_BASE), 1);
-   PUSH_DATA (push, 2 << 24);
+   PUSH_DATA (push, 0xfe << 24);
 
    BEGIN_NVC0(push, NVE4_CP(CODE_ADDRESS_HIGH), 2);
    PUSH_DATAh(push, screen->text->offset);