[Bug 107505] [lars] dEQP-GLES31.functional.geometry_shading.layered#render_with_default_layer_3d failure

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Tue Aug 7 11:53:37 UTC 2018


--- Comment #13 from gaurav.k.singh at intel.com ---

i915_gpu_info is not present in /sys/kernel/debug/dri/0/*

DO we need any patch to enable this sysfs path.

Also, while debugging I found this commit which might help.

commit c1e38ad37042b0ec261eb0ba5631b7ff0ee7a9da
Author: Ben Widawsky <benjamin.widawsky at intel.com>
Date:   Thu Sep 10 16:59:12 2015 -0700

    i965/skl: Use larger URB size where available.

    All SKL SKUs except the lowest one which has half the L3 size actually have
    of URB per slice.

    For once, I can explain how this mistake was made and how it was missed in
    review...  Historically when we enable a platform and put the production
    you can simply look at the "smallest" SKU and see what its URB size is (and
    assumed it was the 1 slice variant). Since on newer platforms the URB sizes
    scaled automatically by HW, this was sufficient. On SKL, this is a bit
    as the lowest SKU actually has half of the L3 fused off. GT2 is the 1 slice
    GT1) variant and it has 384K.

    There are no Jenkins tests fixed (or regressions) and we don't expect any
    here because you can always run with less URB size.

    Thanks to Sarah for bringing this to my attention.

    Cc: Sarah Sharp <sarah.a.sharp at intel.com>
    Signed-off-by: Ben Widawsky <ben at bwidawsk.net>
    Reviewed-by: Jordan Justen <jordan.l.justen at intel.com>

diff --git a/src/mesa/drivers/dri/i965/brw_device_info.c
index 7ad3a2fb7b40..a6a3bb670cae 100644
--- a/src/mesa/drivers/dri/i965/brw_device_info.c
+++ b/src/mesa/drivers/dri/i965/brw_device_info.c
@@ -314,7 +314,7 @@ static const struct brw_device_info brw_device_info_chv = {
    .max_wm_threads = 64 * 6,                        \
    .max_cs_threads = 56,                            \
    .urb = {                                         \
-      .size = 192,                                  \
+      .size = 384,                                  \
       .min_vs_entries = 64,                         \
       .max_vs_entries = 1856,                       \
       .max_hs_entries = 672,                        \
@@ -324,6 +324,7 @@ static const struct brw_device_info brw_device_info_chv = {

 static const struct brw_device_info brw_device_info_skl_gt1 = {
    GEN9_FEATURES, .gt = 1,
+   .urb.size = 192,

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