linux-kernel - Re: [ANNOUNCE] v5.9-rc2-rt1

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Date:   Thu, 27 Aug 2020 11:27:43 +0200
From:   Sebastian Andrzej Siewior <bigeasy@...utronix.de>
To:     Daniel Wagner <wagi@...om.org>
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        LKML <linux-kernel@...r.kernel.org>,
        linux-rt-users <linux-rt-users@...r.kernel.org>,
        Steven Rostedt <rostedt@...dmis.org>
Subject: Re: [ANNOUNCE] v5.9-rc2-rt1

On 2020-08-27 11:19:10 [+0200], Daniel Wagner wrote:
> the the dtb file via ftp and then does a booti. For all non PREEMPT_RT
> kernels (PREEMPT, NONE, SMP=n, ...) everything works fine. For the
> PREEMPT_RT kernel uboot complains with
> 
>   U-Boot> booti 0x00080000 - 0x02600000
>   bootloader-commands: Wait for prompt Starting kernel (timeout 00:03:43)
>   booti 0x00080000 - 0x02600000
>   ERROR: Did not find a cmdline Flattened Device Tree
>   Starting kernel ...
> 
> It's the same dtb in all cases. Not totally sure what is upsetting uboot
> here, maybe the load addresses don't work anymore?

So v5.9-rc2-rt1 with PREEMPT_RT=y enabled leads to the problem and
v5.9-rc2-rt1 with PREEMPT_PREEMPT=y boots fine?

> In short, I can't really say if v5.9-rt for ARMv8 works for me.

Sebastian