2019-09-19 14:43:19 +00:00
|
|
|
From 514653cd51ff6bc14268dc0f98ebb37daa8f0e88 Mon Sep 17 00:00:00 2001
|
2019-07-09 18:32:28 +00:00
|
|
|
From: Eric Anholt <eric@anholt.net>
|
|
|
|
|
Date: Mon, 3 Dec 2018 14:24:38 -0800
|
2019-09-19 14:43:19 +00:00
|
|
|
Subject: [PATCH 571/806] drm/v3d: Invalidate the caches from the outside in.
|
2019-07-09 18:32:28 +00:00
|
|
|
|
|
|
|
|
This would be a fairly obscure race, but let's make sure we don't ever
|
|
|
|
|
lose it.
|
|
|
|
|
|
|
|
|
|
Signed-off-by: Eric Anholt <eric@anholt.net>
|
|
|
|
|
Link: https://patchwork.freedesktop.org/patch/msgid/20181203222438.25417-6-eric@anholt.net
|
|
|
|
|
Reviewed-by: Dave Emett <david.emett@broadcom.com>
|
|
|
|
|
(cherry picked from commit aa5beec32e8b78bfcf621e3c3daebfb1644b6365)
|
|
|
|
|
---
|
|
|
|
|
drivers/gpu/drm/v3d/v3d_gem.c | 8 ++++++--
|
|
|
|
|
1 file changed, 6 insertions(+), 2 deletions(-)
|
|
|
|
|
|
|
|
|
|
--- a/drivers/gpu/drm/v3d/v3d_gem.c
|
|
|
|
|
+++ b/drivers/gpu/drm/v3d/v3d_gem.c
|
|
|
|
|
@@ -171,11 +171,15 @@ v3d_invalidate_slices(struct v3d_dev *v3
|
|
|
|
|
void
|
|
|
|
|
v3d_invalidate_caches(struct v3d_dev *v3d)
|
|
|
|
|
{
|
|
|
|
|
+ /* Invalidate the caches from the outside in. That way if
|
|
|
|
|
+ * another CL's concurrent use of nearby memory were to pull
|
|
|
|
|
+ * an invalidated cacheline back in, we wouldn't leave stale
|
|
|
|
|
+ * data in the inner cache.
|
|
|
|
|
+ */
|
|
|
|
|
v3d_flush_l3(v3d);
|
|
|
|
|
-
|
|
|
|
|
v3d_invalidate_l2c(v3d, 0);
|
|
|
|
|
- v3d_invalidate_slices(v3d, 0);
|
|
|
|
|
v3d_flush_l2t(v3d, 0);
|
|
|
|
|
+ v3d_invalidate_slices(v3d, 0);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void
|
