[Mesa-dev] [PATCH 2/2] intel/isl: Add the maximum surface size limit

[Anuj Phogat]

This limit was first introduced in Skylake PRM. But looking at
the huge limit of 2^38 bytes (~275 GB), I think it is safe to
apply it to all the previous generations as well.

Signed-off-by: Anuj Phogat <anuj.phogat at gmail.com>
---
 src/intel/isl/isl.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/intel/isl/isl.c b/src/intel/isl/isl.c
index 32aa698..b81e031 100644
--- a/src/intel/isl/isl.c
+++ b/src/intel/isl/isl.c
@@ -1398,6 +1398,9 @@ isl_surf_init_s(const struct isl_device *dev,
       base_alignment = MAX(info->min_alignment, tile_size);
    }
 
+   if (size > (uint64_t) 2 << 38)
+      return false;
+
    *surf = (struct isl_surf) {
       .dim = info->dim,
       .dim_layout = dim_layout,
-- 
2.9.3