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| author | Bing Niu <bing.niu@intel.com> | 2016-11-07 10:44:36 +0800 |
|---|---|---|
| committer | Zhenyu Wang <zhenyuw@linux.intel.com> | 2016-11-10 15:39:46 +0800 |
| commit | 9baf0920b5d8e4e4ea302cb954168e06cf838d63 (patch) | |
| tree | e662d2830a63900086fbe2637c176a7aa83c3682 /drivers/gpu/drm/i915/gvt/scheduler.c | |
| parent | 11840e2fff3fb0f90ab8d56f4ba7d3712a82c08f (diff) | |
| download | lwn-9baf0920b5d8e4e4ea302cb954168e06cf838d63.tar.gz lwn-9baf0920b5d8e4e4ea302cb954168e06cf838d63.zip | |
drm/i915/gvt: don't rely on guest PPGTT entry to free old shadow data
On guest writing a PPGTT entry, if it contains value and the old
entry is valid, gvt will read it and find & free the corresponding
old data for it. However, with the KVM write protection provided
by page_track, the guest entry will be written with new value
before gvt handling. To avoid that, we should use the shadow
entry instead.
Signed-off-by: Bing Niu <bing.niu@intel.com>
Signed-off-by: Jike Song <jike.song@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Diffstat (limited to 'drivers/gpu/drm/i915/gvt/scheduler.c')
0 files changed, 0 insertions, 0 deletions