diff options
| author | Zhi Wang <zhi.a.wang@intel.com> | 2017-12-29 02:50:08 +0800 |
|---|---|---|
| committer | Zhenyu Wang <zhenyuw@linux.intel.com> | 2018-01-04 14:23:28 +0800 |
| commit | 121d760d0788f95619049c63449d977065cab69d (patch) | |
| tree | 386ce4f5f14d94013416994fe660ef26d20abdb3 /drivers/gpu | |
| parent | f5f00e7dcc4161f07b76ff1a854e8b1ea7a1ed41 (diff) | |
drm/i915/gvt: Clear the shadow page table entry after post-sync
A shadow page table entry needs to be cleared after being set as
post-sync. This patch fixes the recent error reported in Win7-32 test.
Fixes: 2707e4446688 ("drm/i915/gvt: vGPU graphics memory virtualization")
Signed-off-by: Zhi Wang <zhi.a.wang@intel.com>
CC: Stable <stable@vger.kernel.org>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/i915/gvt/gtt.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/gvt/gtt.c b/drivers/gpu/drm/i915/gvt/gtt.c index 8e331142badb..64d67ff9bf08 100644 --- a/drivers/gpu/drm/i915/gvt/gtt.c +++ b/drivers/gpu/drm/i915/gvt/gtt.c @@ -1359,12 +1359,15 @@ static int ppgtt_handle_guest_write_page_table_bytes(void *gp, return ret; } else { if (!test_bit(index, spt->post_shadow_bitmap)) { + int type = spt->shadow_page.type; + ppgtt_get_shadow_entry(spt, &se, index); ret = ppgtt_handle_guest_entry_removal(gpt, &se, index); if (ret) return ret; + ops->set_pfn(&se, vgpu->gtt.scratch_pt[type].page_mfn); + ppgtt_set_shadow_entry(spt, &se, index); } - ppgtt_set_post_shadow(spt, index); } |