On Thu, May 3, 2018 at 2:14 PM, Robin Murphy <robin.murphy at arm.com> wrote: > On 03/05/18 04:51, JeffyChen wrote: >> On 05/03/2018 03:36 AM, Vicente Bergas wrote: [snip] >>> With 4.17.0-rc3, when reaching the halted state, the HDMI console >>> shows colorful static noise. >>> >> we've added a shutdown() to the iommu driver: >> https://patchwork.kernel.org/patch/10230817/ >> >> any chance related? > > For sure - the IOMMU shutdown disables paging, so if the VOP is still > scanning out then that will result in whatever IOVAs it was using now going > straight out onto the bus as physical addresses. Between the RK3399 memory > map and the way the IOVA allocator works, that probably means it's reading > from all over the peripherals region, which, er, isn't ideal. Hi, just wondering if there has been any progress on that front? Regards, Vicente.
