The MMU needs to be flushed when changing the render context to get rid of stale TLB entries left behind by the last context.
While we do not support context switching between different processes yet this commit fixes memory corruptions seen when executing different 3D applications one after another.
Signed-off-by: Lucas Stach l.stach@pengutronix.de --- drivers/staging/etnaviv/etnaviv_gpu.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/staging/etnaviv/etnaviv_gpu.c b/drivers/staging/etnaviv/etnaviv_gpu.c index 8221df820824..d7025101e929 100644 --- a/drivers/staging/etnaviv/etnaviv_gpu.c +++ b/drivers/staging/etnaviv/etnaviv_gpu.c @@ -878,6 +878,9 @@ int etnaviv_gpu_submit(struct etnaviv_gpu *gpu,
gpu->submitted_fence = submit->fence;
+ if (priv->lastctx != ctx) + gpu->mmu->need_flush = true; + etnaviv_buffer_queue(gpu, event, submit);
priv->lastctx = ctx;