diff options
| author | Dave Airlie <airlied@redhat.com> | 2017-04-11 07:40:42 +1000 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2017-04-11 07:40:42 +1000 |
| commit | b769fefb68cd70385d68220ae341e5a10723fbc0 (patch) | |
| tree | a2881410c9dc5a3474619d155fac981cfbd4ee8f /drivers/gpu/drm/i915/gvt/gtt.c | |
| parent | 1420f63b8207e966f54caec26d08abdc2ff37193 (diff) | |
| parent | 39da7c509acff13fc8cb12ec1bb20337c988ed36 (diff) | |
Backmerge tag 'v4.11-rc6' into drm-next
Linux 4.11-rc6
drm-misc needs 4.11-rc5, may as well fix conflicts with rc6.
Diffstat (limited to 'drivers/gpu/drm/i915/gvt/gtt.c')
| -rw-r--r-- | drivers/gpu/drm/i915/gvt/gtt.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/gvt/gtt.c b/drivers/gpu/drm/i915/gvt/gtt.c index 69d3d8ddecc2..6da4e444e572 100644 --- a/drivers/gpu/drm/i915/gvt/gtt.c +++ b/drivers/gpu/drm/i915/gvt/gtt.c @@ -1837,11 +1837,15 @@ static int emulate_gtt_mmio_write(struct intel_vgpu *vgpu, unsigned int off, ret = gtt_entry_p2m(vgpu, &e, &m); if (ret) { gvt_vgpu_err("fail to translate guest gtt entry\n"); - return ret; + /* guest driver may read/write the entry when partial + * update the entry in this situation p2m will fail + * settting the shadow entry to point to a scratch page + */ + ops->set_pfn(&m, gvt->gtt.scratch_ggtt_mfn); } } else { m = e; - m.val64 = 0; + ops->set_pfn(&m, gvt->gtt.scratch_ggtt_mfn); } ggtt_set_shadow_entry(ggtt_mm, &m, g_gtt_index); |