radeonsi/gfx9: pad shader binaries by 128 bytes

Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>

diff --git a/src/gallium/drivers/radeonsi/si_shader.c b/src/gallium/drivers/radeonsi/si_shader.c
index 575dd6c380f865b055318dd507a49d759772e02f..20d6bd732b268c9faa00b3177b6a89582c4eebef 100644 (file)
--- a/src/gallium/drivers/radeonsi/si_shader.c
+++ b/src/gallium/drivers/radeonsi/si_shader.c
@@ -5872,6 +5872,12 @@ int si_shader_binary_upload(struct si_screen *sscreen, struct si_shader *shader)
        assert((!prolog && !epilog) || !mainb->rodata_size);
        assert(!epilog || !epilog->rodata_size);
 
+       /* GFX9 can fetch at most 128 bytes past the end of the shader.
+        * Prevent VM faults.
+        */
+       if (sscreen->b.chip_class >= GFX9)
+               bo_size += 128;
+
        r600_resource_reference(&shader->bo, NULL);
        shader->bo = (struct r600_resource*)
                     pipe_buffer_create(&sscreen->b.b, 0,