On 10/07/2020 00:19, Suman Anna wrote:
> The CMA reserved memory nodes have been added for the IPU and DSP
> remoteproc devices on all the OMAP4-based Panda boards. These nodes
> are assigned to the respective rproc device nodes, and both the
> IPU and DSP remote processors are enabled for all these boards.
>
> The current CMA pools and sizes are defined statically for each device.
> The starting addresses are fixed to meet current dependencies on the
> remote processor firmwares, and will go away when the remote-side
> code has been improved to gather this information runtime during
> its initialization.
>
> An associated pair of the rproc node and its CMA node can be disabled
> later on if there is no use-case defined to use that remote processor.
>
> Signed-off-by: Suman Anna <s-anna@xxxxxx>
> ---
> arch/arm/boot/dts/omap4-panda-common.dtsi | 30 +++++++++++++++++++++++
> 1 file changed, 30 insertions(+)
>
> diff --git a/arch/arm/boot/dts/omap4-panda-common.dtsi b/arch/arm/boot/dts/omap4-panda-common.dtsi
> index 55ea8b6189af..ef79028fc95f 100644
> --- a/arch/arm/boot/dts/omap4-panda-common.dtsi
> +++ b/arch/arm/boot/dts/omap4-panda-common.dtsi
> @@ -12,6 +12,26 @@ memory@80000000 {
> reg = <0x80000000 0x40000000>; /* 1 GB */
> };
>
> + reserved-memory {
> + #address-cells = <1>;
> + #size-cells = <1>;
> + ranges;
> +
> + dsp_memory_region: dsp-memory@98000000 {
> + compatible = "shared-dma-pool";
> + reg = <0x98000000 0x800000>;
> + reusable;
> + status = "okay";
> + };
> +
> + ipu_memory_region: ipu-memory@98800000 {
> + compatible = "shared-dma-pool";
> + reg = <0x98800000 0x7000000>;
> + reusable;
> + status = "okay";
> + };
> + };
> +
> chosen {
> stdout-path = &uart3;
> };
> @@ -571,3 +591,13 @@ hdmi_out: endpoint {
> };
> };
> };
> +
> +&dsp {
> + status = "okay";
> + memory-region = <&dsp_memory_region>;
> +};
> +
> +&ipu {
> + status = "okay";
> + memory-region = <&ipu_memory_region>;
> +};
>
This appears to be causing some BUG alert messages:
BUG: Bad page state in process swapper/0 pfn:9c801
as reported on kernelci.org:
https://kernelci.org/test/case/id/5f326c6661360154c452c1c9/
I've run a bisection and it landed on this commit. If you fix it
with another patch, please add:
Reported-by: "kernelci.org bot" <bot@xxxxxxxxxxxx>
Hope this helps!
Thanks,
Guillaume
