diff options
author | Terje Bergstrom <tbergstrom@nvidia.com> | 2014-05-08 07:43:27 -0400 |
---|---|---|
committer | Dan Willemsen <dwillemsen@nvidia.com> | 2015-03-18 15:09:20 -0400 |
commit | c8a5d3f908977b55f48e94f31e35e0534c4087cd (patch) | |
tree | 7c095ae930537a6974a5ffe344ca80015b980907 /drivers/gpu/nvgpu/gk20a/channel_gk20a.c | |
parent | 4ac110cb8a46a0c91a4a1e39c168de1b49688971 (diff) |
gpu: nvgpu: Fix TLB invalidate race
TLB invalidate can have a race if several contexts use the same
address space. One thread starting an invalidate allows another
thread to submit before invalidate is completed.
Bug 1502332
Change-Id: I074ec493eac3b153c5f23d796a1dee1d8db24855
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/407578
Reviewed-by: Riham Haidar <rhaidar@nvidia.com>
Tested-by: Riham Haidar <rhaidar@nvidia.com>
Diffstat (limited to 'drivers/gpu/nvgpu/gk20a/channel_gk20a.c')
-rw-r--r-- | drivers/gpu/nvgpu/gk20a/channel_gk20a.c | 7 |
1 files changed, 0 insertions, 7 deletions
diff --git a/drivers/gpu/nvgpu/gk20a/channel_gk20a.c b/drivers/gpu/nvgpu/gk20a/channel_gk20a.c index 1b7191db..7cfb3c24 100644 --- a/drivers/gpu/nvgpu/gk20a/channel_gk20a.c +++ b/drivers/gpu/nvgpu/gk20a/channel_gk20a.c | |||
@@ -1575,13 +1575,6 @@ static int gk20a_submit_channel_gpfifo(struct channel_gk20a *c, | |||
1575 | incr_cmd->gp_put = c->gpfifo.put; | 1575 | incr_cmd->gp_put = c->gpfifo.put; |
1576 | } | 1576 | } |
1577 | 1577 | ||
1578 | /* Invalidate tlb if it's dirty... */ | ||
1579 | /* TBD: this should be done in the cmd stream, not with PRIs. */ | ||
1580 | /* We don't know what context is currently running... */ | ||
1581 | /* Note also: there can be more than one context associated with the */ | ||
1582 | /* address space (vm). */ | ||
1583 | gk20a_mm_tlb_invalidate(c->vm); | ||
1584 | |||
1585 | trace_gk20a_channel_submitted_gpfifo(c->g->dev->name, | 1578 | trace_gk20a_channel_submitted_gpfifo(c->g->dev->name, |
1586 | c->hw_chid, | 1579 | c->hw_chid, |
1587 | num_entries, | 1580 | num_entries, |