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Re: Question regarding RT patches for ARM

From Eric Nelson <eric@nelint.com>
Newsgroups linux.kernel
Subject Re: Question regarding RT patches for ARM
Date 2017-05-15 16:20 +0200
Message-ID <tHp0R-O3-13@gated-at.bofh.it> (permalink)
References <tHnBL-8iJ-9@gated-at.bofh.it> <tHo4O-fL-27@gated-at.bofh.it> <tHo4O-fL-25@gated-at.bofh.it>
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Hi Fawad,

> 发自网易邮箱大师
> 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

Regards,


Eric

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Thread

Question regarding RT patches for ARM Fawad Lateef <fawadlateef@gmail.com> - 2017-05-15 14:50 +0200
  Re: Question regarding RT patches for ARM Richard Weinberger <richard.weinberger@gmail.com> - 2017-05-15 15:10 +0200
  Re: Question regarding RT patches for ARM Fawad Lateef <fawadlateef@gmail.com> - 2017-05-15 15:20 +0200
    Re: Question regarding RT patches for ARM Sebastian Andrzej Siewior <sebastian.siewior@linutronix.de> - 2017-05-15 15:50 +0200
      Re: Question regarding RT patches for ARM Fawad Lateef <fawadlateef@gmail.com> - 2017-05-15 16:10 +0200
    Re: Question regarding RT patches for ARM Eric Nelson <eric@nelint.com> - 2017-05-15 16:20 +0200
      Re: Question regarding RT patches for ARM Fawad Lateef <fawadlateef@gmail.com> - 2017-05-15 16:30 +0200
        Re: Question regarding RT patches for ARM Fawad Lateef <fawadlateef@gmail.com> - 2017-05-17 15:50 +0200
          Re: Question regarding RT patches for ARM Eric Nelson <eric@nelint.com> - 2017-05-17 16:50 +0200
            Re: Question regarding RT patches for ARM Sebastian Andrzej Siewior <bigeasy@linutronix.de> - 2017-05-17 18:10 +0200
              Re: Question regarding RT patches for ARM Fawad Lateef <fawadlateef@gmail.com> - 2017-05-18 13:10 +0200
                Re: Question regarding RT patches for ARM Sebastian Andrzej Siewior <bigeasy@linutronix.de> - 2017-05-18 22:20 +0200
            Re: Question regarding RT patches for ARM Fawad Lateef <fawadlateef@gmail.com> - 2017-05-18 10:50 +0200

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