[Mesa-dev] [PATCH 2/4] panfrost/nondrm: Flag CPU-invisible regions

[Alyssa Rosenzweig]

Potentially, the kernel could optimize these allocations, or perhaps we
can save on mapping costs.

Signed-off-by: Alyssa Rosenzweig <alyssa at rosenzweig.io>
---
 src/gallium/drivers/panfrost/pan_context.c | 6 +++---
 src/gallium/drivers/panfrost/pan_screen.h  | 1 +
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/src/gallium/drivers/panfrost/pan_context.c b/src/gallium/drivers/panfrost/pan_context.c
index 822b5a0dfef..250eded932e 100644
--- a/src/gallium/drivers/panfrost/pan_context.c
+++ b/src/gallium/drivers/panfrost/pan_context.c
@@ -2693,10 +2693,10 @@ panfrost_setup_hardware(struct panfrost_context *ctx)
         }
 
         screen->driver->allocate_slab(screen, &ctx->scratchpad, 64, false, 0, 0, 0);
-        screen->driver->allocate_slab(screen, &ctx->varying_mem, 16384, false, 0, 0, 0);
+        screen->driver->allocate_slab(screen, &ctx->varying_mem, 16384, false, PAN_ALLOCATE_INVISIBLE, 0, 0);
         screen->driver->allocate_slab(screen, &ctx->shaders, 4096, true, PAN_ALLOCATE_EXECUTE, 0, 0);
-        screen->driver->allocate_slab(screen, &ctx->tiler_heap, 32768, false, PAN_ALLOCATE_GROWABLE, 1, 128);
-        screen->driver->allocate_slab(screen, &ctx->misc_0, 128, false, PAN_ALLOCATE_GROWABLE, 1, 128);
+        screen->driver->allocate_slab(screen, &ctx->tiler_heap, 32768, false, PAN_ALLOCATE_INVISIBLE | PAN_ALLOCATE_GROWABLE, 1, 128);
+        screen->driver->allocate_slab(screen, &ctx->misc_0, 128, false, PAN_ALLOCATE_INVISIBLE | PAN_ALLOCATE_GROWABLE, 1, 128);
 
 }
 
diff --git a/src/gallium/drivers/panfrost/pan_screen.h b/src/gallium/drivers/panfrost/pan_screen.h
index 4ff690de658..3d7c1ad1562 100644
--- a/src/gallium/drivers/panfrost/pan_screen.h
+++ b/src/gallium/drivers/panfrost/pan_screen.h
@@ -46,6 +46,7 @@ struct panfrost_screen;
 /* Flags for allocated memory */
 #define PAN_ALLOCATE_EXECUTE (1 << 0)
 #define PAN_ALLOCATE_GROWABLE (1 << 1)
+#define PAN_ALLOCATE_INVISIBLE (1 << 2)
 
 struct panfrost_driver {
 	struct panfrost_bo * (*import_bo) (struct panfrost_screen *screen, struct winsys_handle *whandle);
-- 
2.20.1