From 2ed6ff728a59d2be8de505b5c8577390bc8fb376 Mon Sep 17 00:00:00 2001
From: Alyssa Rosenzweig <alyssa.rosenzweig@intel.com>
Date: Thu, 27 Nov 2025 17:57:10 -0500
Subject: [PATCH] brw: explicitly pad tgl_swsb

This lets us treat it as a packed data structure without worrying about garbage.

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@intel.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/40829>
---
 src/intel/compiler/brw/brw_eu_defines.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/intel/compiler/brw/brw_eu_defines.h b/src/intel/compiler/brw/brw_eu_defines.h
index 76a6ff37f35..cb2797e4d23 100644
--- a/src/intel/compiler/brw/brw_eu_defines.h
+++ b/src/intel/compiler/brw/brw_eu_defines.h
@@ -943,7 +943,9 @@ struct tgl_swsb {
    enum tgl_pipe pipe : 3;
    unsigned sbid : 5;
    enum tgl_sbid_mode mode : 3;
-};
+   unsigned pad : 2;
+} PACKED;
+static_assert(sizeof(struct tgl_swsb) == 2, "packed");
 
 /**
  * Construct a scheduling annotation with a single RegDist dependency.  This