diff --git a/drivers/gpu/drm/radeon/evergreen_cs.c b/drivers/gpu/drm/radeon/evergreen_cs.c
index 49203b6..8bf576a 100644
--- a/drivers/gpu/drm/radeon/evergreen_cs.c
+++ b/drivers/gpu/drm/radeon/evergreen_cs.c
@@ -85,6 +85,7 @@
 	u32			db_s_write_offset;
 	struct radeon_bo	*db_s_read_bo;
 	struct radeon_bo	*db_s_write_bo;
+	bool			sx_misc_kill_all_prims;
 };
 
 static u32 evergreen_cs_get_aray_mode(u32 tiling_flags)
@@ -162,6 +163,7 @@
 		track->vgt_strmout_bo_offset[i] = 0xFFFFFFFF;
 		track->vgt_strmout_bo_mc[i] = 0xFFFFFFFF;
 	}
+	track->sx_misc_kill_all_prims = false;
 }
 
 struct eg_surface {
@@ -821,6 +823,9 @@
 		}
 	}
 
+	if (track->sx_misc_kill_all_prims)
+		return 0;
+
 	/* check that we have a cb for each enabled target
 	 */
 	tmp = track->cb_target_mask;
@@ -1748,6 +1753,9 @@
 		}
 		ib[idx] += (u32)((reloc->lobj.gpu_offset >> 8) & 0xffffffff);
 		break;
+	case SX_MISC:
+		track->sx_misc_kill_all_prims = (radeon_get_ib_value(p, idx) & 0x1) != 0;
+		break;
 	default:
 		dev_warn(p->dev, "forbidden register 0x%08x at %d\n", reg, idx);
 		return -EINVAL;
diff --git a/drivers/gpu/drm/radeon/r600_cs.c b/drivers/gpu/drm/radeon/r600_cs.c
index 2e465a7..b3c40e0 100644
--- a/drivers/gpu/drm/radeon/r600_cs.c
+++ b/drivers/gpu/drm/radeon/r600_cs.c
@@ -74,6 +74,7 @@
 	u32			db_offset;
 	struct radeon_bo	*db_bo;
 	u64			db_bo_mc;
+	bool			sx_misc_kill_all_prims;
 };
 
 #define FMT_8_BIT(fmt, vc)   [fmt] = { 1, 1, 1, vc, CHIP_R600 }
@@ -322,6 +323,7 @@
 		track->vgt_strmout_bo_offset[i] = 0xFFFFFFFF;
 		track->vgt_strmout_bo_mc[i] = 0xFFFFFFFF;
 	}
+	track->sx_misc_kill_all_prims = false;
 }
 
 static int r600_cs_track_validate_cb(struct radeon_cs_parser *p, int i)
@@ -479,6 +481,9 @@
 		}
 	}
 
+	if (track->sx_misc_kill_all_prims)
+		return 0;
+
 	/* check that we have a cb for each enabled target, we don't check
 	 * shader_mask because it seems mesa isn't always setting it :(
 	 */
@@ -1279,6 +1284,9 @@
 		}
 		ib[idx] += (u32)((reloc->lobj.gpu_offset >> 8) & 0xffffffff);
 		break;
+	case SX_MISC:
+		track->sx_misc_kill_all_prims = (radeon_get_ib_value(p, idx) & 0x1) != 0;
+		break;
 	default:
 		dev_warn(p->dev, "forbidden register 0x%08x at %d\n", reg, idx);
 		return -EINVAL;
diff --git a/drivers/gpu/drm/radeon/reg_srcs/cayman b/drivers/gpu/drm/radeon/reg_srcs/cayman
index 7b526d3..2d30b06 100644
--- a/drivers/gpu/drm/radeon/reg_srcs/cayman
+++ b/drivers/gpu/drm/radeon/reg_srcs/cayman
@@ -208,7 +208,6 @@
 0x00028344 PA_SC_VPORT_ZMAX_14
 0x00028348 PA_SC_VPORT_ZMIN_15
 0x0002834C PA_SC_VPORT_ZMAX_15
-0x00028350 SX_MISC
 0x00028354 SX_SURFACE_SYNC
 0x0002835C SX_SCATTER_EXPORT_SIZE
 0x00028380 SQ_VTX_SEMANTIC_0
diff --git a/drivers/gpu/drm/radeon/reg_srcs/evergreen b/drivers/gpu/drm/radeon/reg_srcs/evergreen
index 7f43394..ba48394 100644
--- a/drivers/gpu/drm/radeon/reg_srcs/evergreen
+++ b/drivers/gpu/drm/radeon/reg_srcs/evergreen
@@ -224,7 +224,6 @@
 0x00028344 PA_SC_VPORT_ZMAX_14
 0x00028348 PA_SC_VPORT_ZMIN_15
 0x0002834C PA_SC_VPORT_ZMAX_15
-0x00028350 SX_MISC
 0x00028354 SX_SURFACE_SYNC
 0x00028380 SQ_VTX_SEMANTIC_0
 0x00028384 SQ_VTX_SEMANTIC_1
diff --git a/drivers/gpu/drm/radeon/reg_srcs/r600 b/drivers/gpu/drm/radeon/reg_srcs/r600
index 79d2455..626c24e 100644
--- a/drivers/gpu/drm/radeon/reg_srcs/r600
+++ b/drivers/gpu/drm/radeon/reg_srcs/r600
@@ -438,7 +438,6 @@
 0x00028638 SPI_VS_OUT_ID_9
 0x00028438 SX_ALPHA_REF
 0x00028410 SX_ALPHA_TEST_CONTROL
-0x00028350 SX_MISC
 0x00028354 SX_SURFACE_SYNC
 0x00009014 SX_MEMORY_EXPORT_SIZE
 0x00009604 TC_INVALIDATE