From eca8e29dcaf4d31ba0f97518d0b408c3e79412cb Mon Sep 17 00:00:00 2001
From: Arthur Hanson Rasmusson <arthur@vgpu.io>
Date: Fri, 6 Nov 2026 21:06:54 -0500
Subject: vgsp-gl: GS-mode/FASTGS variants for the synth GS SPH

---
 kernel/gsp_sema_service.c | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'kernel/gsp_sema_service.c')

diff --git a/kernel/gsp_sema_service.c b/kernel/gsp_sema_service.c
index d8aa4dc..4ede0c7 100644
--- a/kernel/gsp_sema_service.c
+++ b/kernel/gsp_sema_service.c
@@ -10679,6 +10679,10 @@ static void svc_gl_flush(struct nv_vgpu_device *vgpu,
 				} else if (gs_maps == 3u) {
 					gs_words[17] = 0u;
 				}
+				/* SESSION 155 CONT 13: mesh-dummy FASTGS
+				 * form (bit24 ENABLE_FAST_G_S). */
+				if (gsp_phys_rmcall_gr_sph_gs_mode_value() & 1u)
+					gs_words[0] |= (1u << 24);
 
 				for (pi4 = 0; pi4 < svc_gl.n_progs; pi4++)
 					if (svc_gl.progs[pi4] == dst)
-- 
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