linux-kernel - [PATCH 5.10 142/152] drm/i915/gt: Restore clear-residual mitigations for Ivybridge, Baytrail

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Date:   Mon, 18 Jan 2021 12:35:17 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Chris Wilson <chris@...is-wilson.co.uk>,
        Mika Kuoppala <mika.kuoppala@...ux.intel.com>,
        Prathap Kumar Valsan <prathap.kumar.valsan@...el.com>,
        Akeem G Abodunrin <akeem.g.abodunrin@...el.com>,
        Bloomfield Jon <jon.bloomfield@...el.com>,
        Rodrigo Vivi <rodrigo.vivi@...el.com>,
        Jani Nikula <jani.nikula@...el.com>
Subject: [PATCH 5.10 142/152] drm/i915/gt: Restore clear-residual mitigations for Ivybridge, Baytrail

From: Chris Wilson <chris@...is-wilson.co.uk>

commit 09aa9e45863e9e25dfbf350bae89fc3c2964482c upstream.

The mitigation is required for all gen7 platforms, now that it does not
cause GPU hangs, restore it for Ivybridge and Baytrail.

Fixes: 47f8253d2b89 ("drm/i915/gen7: Clear all EU/L3 residual contexts")
Signed-off-by: Chris Wilson <chris@...is-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@...ux.intel.com>
Cc: Prathap Kumar Valsan <prathap.kumar.valsan@...el.com>
Cc: Akeem G Abodunrin <akeem.g.abodunrin@...el.com>
Cc: Bloomfield Jon <jon.bloomfield@...el.com>
Reviewed-by: Akeem G Abodunrin <akeem.g.abodunrin@...el.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@...el.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210111225220.3483-2-chris@chris-wilson.co.uk
(cherry picked from commit 008ead6ef8f588a8c832adfe9db201d9be5fd410)
Signed-off-by: Jani Nikula <jani.nikula@...el.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/gpu/drm/i915/gt/intel_ring_submission.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/gpu/drm/i915/gt/intel_ring_submission.c
+++ b/drivers/gpu/drm/i915/gt/intel_ring_submission.c
@@ -1291,7 +1291,7 @@ int intel_ring_submission_setup(struct i
 
 	GEM_BUG_ON(timeline->hwsp_ggtt != engine->status_page.vma);
 
-	if (IS_HASWELL(engine->i915) && engine->class == RENDER_CLASS) {
+	if (IS_GEN(engine->i915, 7) && engine->class == RENDER_CLASS) {
 		err = gen7_ctx_switch_bb_init(engine);
 		if (err)
 			goto err_ring_unpin;