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drm/i915/gvt: Invalidate vGPU PPGTT mm objects during a vGPU reset. 

As different OSes might handling GVT PPGTT creation/destroy notification
differently during a vGPU reset. A better approach is invalidating all
vGPU PPGTT mm objects during vGPU reset.

Signed-off-by: Zhi Wang <zhi.a.wang@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
This commit is contained in:
Zhi Wang 2018-02-07 18:12:14 +08:00 committed by Zhenyu Wang
parent 5cd4223ea3
commit 730c8ead53
3 changed files with 24 additions and 0 deletions
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22
drivers/gpu/drm/i915/gvt/gtt.c
View File

@ -2290,6 +2290,28 @@ void intel_gvt_clean_gtt(struct intel_gvt *gvt)
clean_spt_oos(gvt);
}
/**
* intel_vgpu_invalidate_ppgtt - invalidate PPGTT instances
* @vgpu: a vGPU
*
* This function is called when invalidate all PPGTT instances of a vGPU.
*
*/
void intel_vgpu_invalidate_ppgtt(struct intel_vgpu *vgpu)
{
struct list_head *pos, *n;
struct intel_vgpu_mm *mm;
list_for_each_safe(pos, n, &vgpu->gtt.ppgtt_mm_list_head) {
mm = container_of(pos, struct intel_vgpu_mm, ppgtt_mm.list);
if (mm->type == INTEL_GVT_MM_PPGTT) {
list_del_init(&mm->ppgtt_mm.lru_list);
if (mm->ppgtt_mm.shadowed)
invalidate_ppgtt_mm(mm);
}
}
}
/**
* intel_vgpu_reset_ggtt - reset the GGTT entry
* @vgpu: a vGPU

1
drivers/gpu/drm/i915/gvt/gtt.h
View File

@ -194,6 +194,7 @@ struct intel_vgpu_gtt {
extern int intel_vgpu_init_gtt(struct intel_vgpu *vgpu);
extern void intel_vgpu_clean_gtt(struct intel_vgpu *vgpu);
void intel_vgpu_reset_ggtt(struct intel_vgpu *vgpu);
void intel_vgpu_invalidate_ppgtt(struct intel_vgpu *vgpu);
extern int intel_gvt_init_gtt(struct intel_gvt *gvt);
void intel_vgpu_reset_gtt(struct intel_vgpu *vgpu);

1
drivers/gpu/drm/i915/gvt/vgpu.c
View File

@ -522,6 +522,7 @@ void intel_gvt_reset_vgpu_locked(struct intel_vgpu *vgpu, bool dmlr,
/* full GPU reset or device model level reset */
if (engine_mask == ALL_ENGINES || dmlr) {
intel_vgpu_select_submission_ops(vgpu, ALL_ENGINES, 0);
intel_vgpu_invalidate_ppgtt(vgpu);
/*fence will not be reset during virtual reset */
if (dmlr) {
intel_vgpu_reset_gtt(vgpu);