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| author | Ben Skeggs <bskeggs@redhat.com> | 2016-12-14 02:52:39 +0300 |
|---|---|---|
| committer | Ben Skeggs <bskeggs@redhat.com> | 2017-01-31 13:05:25 +0300 |
| commit | 96692b097ba76d0c637ae8af47b29c73da33c9d0 (patch) | |
| tree | 0368760a2c0b70a4bfb9f9cdd87be19785fac9d7 | |
| parent | 566cf877a1fcb6d6dc0126b076aad062054c2637 (diff) | |
| download | linux-96692b097ba76d0c637ae8af47b29c73da33c9d0.tar.xz | |
drm/nouveau/fence/g84-: protect against concurrent access to semaphore buffers
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
| -rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_fence.h | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/nouveau/nv84_fence.c | 6 |
2 files changed, 7 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_fence.h b/drivers/gpu/drm/nouveau/nouveau_fence.h index ccdce1b4eec4..d5e58a38f160 100644 --- a/drivers/gpu/drm/nouveau/nouveau_fence.h +++ b/drivers/gpu/drm/nouveau/nouveau_fence.h @@ -99,6 +99,7 @@ struct nv84_fence_priv { struct nouveau_bo *bo; struct nouveau_bo *bo_gart; u32 *suspend; + struct mutex mutex; }; int nv84_fence_context_new(struct nouveau_channel *); diff --git a/drivers/gpu/drm/nouveau/nv84_fence.c b/drivers/gpu/drm/nouveau/nv84_fence.c index 52b87ae83e7b..f0b322bec7df 100644 --- a/drivers/gpu/drm/nouveau/nv84_fence.c +++ b/drivers/gpu/drm/nouveau/nv84_fence.c @@ -107,8 +107,10 @@ nv84_fence_context_del(struct nouveau_channel *chan) struct nv84_fence_chan *fctx = chan->fence; nouveau_bo_wr32(priv->bo, chan->chid * 16 / 4, fctx->base.sequence); + mutex_lock(&priv->mutex); nouveau_bo_vma_del(priv->bo, &fctx->vma_gart); nouveau_bo_vma_del(priv->bo, &fctx->vma); + mutex_unlock(&priv->mutex); nouveau_fence_context_del(&fctx->base); chan->fence = NULL; nouveau_fence_context_free(&fctx->base); @@ -134,11 +136,13 @@ nv84_fence_context_new(struct nouveau_channel *chan) fctx->base.sync32 = nv84_fence_sync32; fctx->base.sequence = nv84_fence_read(chan); + mutex_lock(&priv->mutex); ret = nouveau_bo_vma_add(priv->bo, cli->vm, &fctx->vma); if (ret == 0) { ret = nouveau_bo_vma_add(priv->bo_gart, cli->vm, &fctx->vma_gart); } + mutex_unlock(&priv->mutex); if (ret) nv84_fence_context_del(chan); @@ -212,6 +216,8 @@ nv84_fence_create(struct nouveau_drm *drm) priv->base.context_base = dma_fence_context_alloc(priv->base.contexts); priv->base.uevent = true; + mutex_init(&priv->mutex); + /* Use VRAM if there is any ; otherwise fallback to system memory */ domain = drm->device.info.ram_size != 0 ? TTM_PL_FLAG_VRAM : /* |