From 7cb8468bbede8cac0d9ed69b2549788ecaa6b558 Mon Sep 17 00:00:00 2001
From: Chris Wilson <chris@chris-wilson.co.uk>
Date: Wed, 11 Sep 2019 13:57:17 +0100
Subject: drm/i915/tgl: Disable read-only ppgtt support
Git-commit: 7cb8468bbede8cac0d9ed69b2549788ecaa6b558
Patch-mainline: v5.5-rc1
References: bsc#1152489
The same read-only affliction as befell Icelake is affecting Tigerlake.
Disable the read-only support as clearly it was not fixed.
Testcase: igt/i915_selftests/live_gem_context
References: 3936867dbc1e ("drm/i915: Disable read only ppgtt support for gen11")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190911125717.28997-1-chris@chris-wilson.co.uk
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
---
drivers/gpu/drm/i915/i915_gem_gtt.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c
index e4f66bfe74c2..a09a9b62afbe 100644
--- a/drivers/gpu/drm/i915/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
@@ -1486,8 +1486,10 @@ static struct i915_ppgtt *gen8_ppgtt_create(struct drm_i915_private *i915)
*
* Gen11 has HSDES#:1807136187 unresolved. Disable ro support
* for now.
+ *
+ * Gen12 has inherited the same read-only fault issue from gen11.
*/
- ppgtt->vm.has_read_only = INTEL_GEN(i915) != 11;
+ ppgtt->vm.has_read_only = !IS_GEN_RANGE(i915, 11, 12);
/* There are only few exceptions for gen >=6. chv and bxt.
* And we are not sure about the latter so play safe for now.
--
2.28.0