| Message ID | 20220815113927.1056127-1-philip.cox@canonical.com |
|---|---|
| Headers | show |
| Series | i915: Enable HuC authentication for EHL, ICL, and ADL-S | expand |
Going to send out an updated version On Mon, 2022-08-15 at 07:39 -0400, Philip Cox wrote: > BugLink: https://bugs.launchpad.net/bugs/1981971 > > [Impact] > * In the i915 Intel gfx driver, we need to explicitly enable HuC > authentication. > > * This fixes an issue with the Gstreamer media pipeline. > > * This only applies to the ICL, ADL-S, and EHL platforms. 1 > > * This patch is only for the linux-intel-iotg kernel. We have pulled > in patches from upstream, so the state of this driver is in > between > the upstream 5.15 driver, and the upstream tip-of-tree driver. > > [Test Plan] > * Intel has tested this patch. > > * I have tested the patch as well. > > * To test, the system is booted, and issuing the command: > sudo cat /sys/kernel/debug/dri/0/gt/uc/huc_info > will either return the huc info, or it will display > "HuC disabled" > > > > [Where problems could occur] > * If the installed firmware has been trimmed so that only blobs > that were in use were retained, when the kernel tried to load > the HuC blob, it would fail. This scenario should not happen > unless someone is mucking about with the installed firmware. > If that is the case, other things will likely start failing > as well.
BugLink: https://bugs.launchpad.net/bugs/1981971 [Impact] * In the i915 Intel gfx driver, we need to explicitly enable HuC authentication. * This fixes an issue with the Gstreamer media pipeline. * This only applies to the ICL, ADL-S, and EHL platforms. 1 * This patch is only for the linux-intel-iotg kernel. We have pulled in patches from upstream, so the state of this driver is in between the upstream 5.15 driver, and the upstream tip-of-tree driver. [Test Plan] * Intel has tested this patch. * I have tested the patch as well. * To test, the system is booted, and issuing the command: sudo cat /sys/kernel/debug/dri/0/gt/uc/huc_info will either return the huc info, or it will display "HuC disabled" [Where problems could occur] * If the installed firmware has been trimmed so that only blobs that were in use were retained, when the kernel tried to load the HuC blob, it would fail. This scenario should not happen unless someone is mucking about with the installed firmware. If that is the case, other things will likely start failing as well.