From fee9230bb518e9a688e65e6125d9cbe4f8ad8cff Mon Sep 17 00:00:00 2001
From: Karol Herbst <kherbst@redhat.com>
Date: Wed, 16 Apr 2025 11:10:27 +0200
Subject: [PATCH] iris/xe: fix compute shader start address

It needs to apply the offset so it selects the correct SIMD shader.

Cc: mesa-stable
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/34548>
---
 src/gallium/drivers/iris/iris_state.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/gallium/drivers/iris/iris_state.c b/src/gallium/drivers/iris/iris_state.c
index fb4c080e877..5ede6dd089c 100644
--- a/src/gallium/drivers/iris/iris_state.c
+++ b/src/gallium/drivers/iris/iris_state.c
@@ -9108,7 +9108,8 @@ iris_upload_compute_walker(struct iris_context *ice,
    }
 
    struct GENX(INTERFACE_DESCRIPTOR_DATA) idd = {};
-   idd.KernelStartPointer = KSP(shader);
+   idd.KernelStartPointer =
+      KSP(shader) + iris_cs_data_prog_offset(cs_data, dispatch.simd_size);
    idd.NumberofThreadsinGPGPUThreadGroup = dispatch.threads;
    idd.SharedLocalMemorySize =
       intel_compute_slm_encode_size(GFX_VER, shader->total_shared);