diff options
| author | Yan Zhao <yan.y.zhao@intel.com> | 2019-03-27 00:55:45 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-04-17 08:38:39 +0200 |
| commit | 8ad895bf4b8bb365d074af01ab9deead7130246d (patch) | |
| tree | c902d213375038658177c33cd3cc1616a8c2dc5b /include/linux/processor.h | |
| parent | 646f8e01fc37f383c82eb497f925759fefe440c8 (diff) | |
drm/i915/gvt: do not let pin count of shadow mm go negative
[ Upstream commit 663a50ceac75c2208d2ad95365bc8382fd42f44d ]
shadow mm's pin count got increased in workload preparation phase, which
is after workload scanning.
it will get decreased in complete_current_workload() anyway after
workload completion.
Sometimes, if a workload meets a scanning error, its shadow mm pin count
will not get increased but will get decreased in the end.
This patch lets shadow mm's pin count not go below 0.
Fixes: 2707e4446688 ("drm/i915/gvt: vGPU graphics memory virtualization")
Cc: zhenyuw@linux.intel.com
Cc: stable@vger.kernel.org #4.14+
Signed-off-by: Yan Zhao <yan.y.zhao@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'include/linux/processor.h')
0 files changed, 0 insertions, 0 deletions