Re: [PATCH v5] drm/msm: gpu: Enable zap shader for A5XX

2017-05-17 Thread Bjorn Andersson
On Wed 17 May 07:45 PDT 2017, Jordan Crouse wrote: > The A5XX GPU powers on in "secure" mode. In secure mode the GPU can > only render to buffers that are marked as secure and inaccessible > to the kernel and user through a series of hardware protections. In > practice secure mode is used to draw

[PATCH v5] drm/msm: gpu: Enable zap shader for A5XX

2017-05-17 Thread Jordan Crouse
The A5XX GPU powers on in "secure" mode. In secure mode the GPU can only render to buffers that are marked as secure and inaccessible to the kernel and user through a series of hardware protections. In practice secure mode is used to draw things like a UI on a secure video frame. In order to switc