2019-05-07 07:09:50 +08:00
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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Min He <min.he@intel.com>
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Date: Tue, 23 Apr 2019 03:36:36 +0000
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Subject: [PATCH] drm/i915/gvt: disable the preemption timeout in GVT-g guest
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In GVT-g guest, preemption is disabled. However, the force preemption
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related patches will trigger force GPU reset, which impacts the guest
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QoS. So disabled it in this patch for GVT-g guests.
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Tracked-On: projectacrn/acrn-hypervisor#3009
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Signed-off-by: Min He <min.he@intel.com>
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Reviewed-by: Zhao Yakui <yakui.zhao@intel.com>
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---
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drivers/gpu/drm/i915/intel_lrc.c | 1 +
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1 file changed, 1 insertion(+)
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diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
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2020-05-05 09:02:46 +08:00
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index ba63a6384..bc2fdc7d2 100644
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2019-05-07 07:09:50 +08:00
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--- a/drivers/gpu/drm/i915/intel_lrc.c
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+++ b/drivers/gpu/drm/i915/intel_lrc.c
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@@ -1231,6 +1231,7 @@ static void __update_queue(struct intel_engine_cs *engine,
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/* Set a timer to force preemption vs hostile userspace */
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if (timeout &&
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+ !intel_vgpu_active(engine->i915) &&
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__execlists_need_preempt(prio, execlists->queue_priority)) {
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GEM_TRACE("%s preempt timeout=%uns\n", engine->name, timeout);
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--
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https://clearlinux.org
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