Hi,


On 15 May 2017 at 16:20, Fawad Lateef [off-list ref] wrote:

Hi Eric,


On 15 May 2017 at 16:12, Eric Nelson [off-list ref] wrote:

quoted

Hi Fawad,

quoted

????????
On 05/15/2017 20:44, Fawad Lateef wrote:

Hi All,

I am working on custom i.MX6 quad hardware and using RT patches for
almost latest stable kernel 4.9 and facing some weird system stall OR
'unhandled page fault - exceptions'.

I'm not sure about the unhandled page fault, but the stalls may be
because of the SDMA driver.

See this patch in the Freescale/NXP community for kernel 4.1:
https://github.com/Freescale/meta-freescale/blob/master/recipes-kernel/linux/linux-fslc-imx-rt/0003-Work-around-CPU-stalls-in-the-imx-sdma-driver.patch

Thanks for the patch link. I will give it a try.

Talked to hardware manufacturer and they applied the patch.

Still that SDMA is only used for NOR flash and only u-boot and its
environment are stored in nor flash. So not sure if that is going to
help in any case.

So I would really like few more suggestions OR confirmations about ARM
(cortex-A9 based imx6) (preemept)-RT support/patches are stable and
can be used for final products.

Thanks

quoted

Regards,


Eric

Regards,

Fawad Lateef