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drm/i915/gvt: Update PDPs after a vGPU mm object is pinned. 

The PDPs of a shadow page will only be valid after a vGPU mm is pinned.
So the PDPs in the shadow context should be updated then.

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 18:12:15 +08:00 committed by Zhenyu Wang
parent 730c8ead53
commit b20c0d5ce1
1 changed files with 25 additions and 3 deletions
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28
drivers/gpu/drm/i915/gvt/scheduler.c
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@ -52,6 +52,29 @@ static void set_context_pdp_root_pointer(
pdp_pair[i].val = pdp[7 - i];
}
static void update_shadow_pdps(struct intel_vgpu_workload *workload)
{
struct intel_vgpu *vgpu = workload->vgpu;
int ring_id = workload->ring_id;
struct i915_gem_context *shadow_ctx = vgpu->submission.shadow_ctx;
struct drm_i915_gem_object *ctx_obj =
shadow_ctx->engine[ring_id].state->obj;
struct execlist_ring_context *shadow_ring_context;
struct page *page;
if (WARN_ON(!workload->shadow_mm))
return;
if (WARN_ON(!atomic_read(&workload->shadow_mm->pincount)))
return;
page = i915_gem_object_get_page(ctx_obj, LRC_STATE_PN);
shadow_ring_context = kmap(page);
set_context_pdp_root_pointer(shadow_ring_context,
(void *)workload->shadow_mm->ppgtt_mm.shadow_pdps);
kunmap(page);
}
static int populate_shadow_context(struct intel_vgpu_workload *workload)
{
struct intel_vgpu *vgpu = workload->vgpu;
@ -112,9 +135,6 @@ static int populate_shadow_context(struct intel_vgpu_workload *workload)
}
#undef COPY_REG
set_context_pdp_root_pointer(shadow_ring_context,
(void *)workload->shadow_mm->ppgtt_mm.shadow_pdps);
intel_gvt_hypervisor_read_gpa(vgpu,
workload->ring_context_gpa +
sizeof(*shadow_ring_context),
@ -509,6 +529,8 @@ static int prepare_workload(struct intel_vgpu_workload *workload)
return ret;
}
update_shadow_pdps(workload);
ret = intel_vgpu_sync_oos_pages(workload->vgpu);
if (ret) {
gvt_vgpu_err("fail to vgpu sync oos pages\n");