40 lines
1.5 KiB
Diff
40 lines
1.5 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Zhao Yakui <yakui.zhao@intel.com>
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Date: Fri, 14 Jun 2019 08:50:56 +0800
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Subject: [PATCH] drm/i915/gvt: disable the PIPE_FAULT_ERROR for gvt-d
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This is a WA for too many error logs after GPU iommu is enabled.
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Tracked-On: projectacrn/acrn-hypervisor#4509
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Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
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Reviewed-by: Liu Xinyun <xinyun.liu@intel.com>
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Reviewed-by: Yu Wang <yu1.wang@intel.com>
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---
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drivers/gpu/drm/i915/i915_irq.c | 10 +++++++++-
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1 file changed, 9 insertions(+), 1 deletion(-)
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diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
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index 6aec41be56f9..8bf13da605eb 100644
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--- a/drivers/gpu/drm/i915/i915_irq.c
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+++ b/drivers/gpu/drm/i915/i915_irq.c
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@@ -4218,7 +4218,15 @@ static void gen8_de_irq_postinstall(struct drm_i915_private *dev_priv)
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de_misc_masked |= GEN8_DE_MISC_GSE;
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if (INTEL_GEN(dev_priv) >= 9) {
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- de_pipe_masked |= GEN9_DE_PIPE_IRQ_FAULT_ERRORS;
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+ /* FIXME: disable PIPE FAULT IRQs due to warnings likes
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+ * 'Fault errors on pipe A: 0x00000080 ' are continuous
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+ * print during WaaG GOP stage but stop after enter Windows
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+ * desktop.
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+ * These warnings have no functionality impact, but it
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+ * will delay the boot time of Guest. The patch as WA first
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+ * and revert until root caused.
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+ */
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+ /* de_pipe_masked |= GEN9_DE_PIPE_IRQ_FAULT_ERRORS; */
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de_port_masked |= GEN9_AUX_CHANNEL_B | GEN9_AUX_CHANNEL_C |
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GEN9_AUX_CHANNEL_D;
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if (IS_GEN9_LP(dev_priv))
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--
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https://clearlinux.org
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