* PREEMPT_RT_FULL on x86-32 machine
@ 2019-06-22 8:19 Pavel Machek
2019-06-24 9:29 ` Jan Kiszka
0 siblings, 1 reply; 6+ messages in thread
From: Pavel Machek @ 2019-06-22 8:19 UTC (permalink / raw)
To: linux-rt-users, kernel list; +Cc: mwhitehe
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Hi!
Is full preemption supposed to work on x86-32 machines?
Because it does not work for me. It crashes early in boot, no messages
make it to console. Similar configuration for x86-64 boots ok.
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: PREEMPT_RT_FULL on x86-32 machine
2019-06-22 8:19 PREEMPT_RT_FULL on x86-32 machine Pavel Machek
@ 2019-06-24 9:29 ` Jan Kiszka
2019-06-24 10:53 ` Pavel Machek
0 siblings, 1 reply; 6+ messages in thread
From: Jan Kiszka @ 2019-06-24 9:29 UTC (permalink / raw)
To: Pavel Machek, linux-rt-users, kernel list; +Cc: mwhitehe
On 22.06.19 10:19, Pavel Machek wrote:
> Hi!
>
> Is full preemption supposed to work on x86-32 machines?
>
> Because it does not work for me. It crashes early in boot, no messages
> make it to console. Similar configuration for x86-64 boots ok.
>
Maybe you can also tell which version(s) you tried, and in which
configuration(s), and how the crash looked like.
Jan
--
Siemens AG, Corporate Technology, CT RDA IOT SES-DE
Corporate Competence Center Embedded Linux
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: PREEMPT_RT_FULL on x86-32 machine
2019-06-24 9:29 ` Jan Kiszka
@ 2019-06-24 10:53 ` Pavel Machek
2019-06-24 10:58 ` Jan Kiszka
2019-06-24 13:27 ` Sebastian Andrzej Siewior
0 siblings, 2 replies; 6+ messages in thread
From: Pavel Machek @ 2019-06-24 10:53 UTC (permalink / raw)
To: Jan Kiszka; +Cc: linux-rt-users, kernel list, mwhitehe
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Hi!
> >Is full preemption supposed to work on x86-32 machines?
> >
> >Because it does not work for me. It crashes early in boot, no messages
> >make it to console. Similar configuration for x86-64 boots ok.
> >
>
> Maybe you can also tell which version(s) you tried, and in which
> configuration(s), and how the crash looked like.
I wanted to know if the configuration is supposed to work at all
before starting heavy debugging. From your reply I assume that it
should work.
I tried 4.19.13-rt1-cip1 among others. Crash is early in boot, I can
try some early printing...
Best regards,
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: PREEMPT_RT_FULL on x86-32 machine
2019-06-24 10:53 ` Pavel Machek
@ 2019-06-24 10:58 ` Jan Kiszka
2019-06-24 13:27 ` Sebastian Andrzej Siewior
1 sibling, 0 replies; 6+ messages in thread
From: Jan Kiszka @ 2019-06-24 10:58 UTC (permalink / raw)
To: Pavel Machek; +Cc: linux-rt-users, kernel list, mwhitehe
On 24.06.19 12:53, Pavel Machek wrote:
> Hi!
>
>>> Is full preemption supposed to work on x86-32 machines?
>>>
>>> Because it does not work for me. It crashes early in boot, no messages
>>> make it to console. Similar configuration for x86-64 boots ok.
>>>
>>
>> Maybe you can also tell which version(s) you tried, and in which
>> configuration(s), and how the crash looked like.
>
> I wanted to know if the configuration is supposed to work at all
> before starting heavy debugging. From your reply I assume that it
> should work.
We still have at least one 4.4-based 32-bit-only target on RT. But there is
likely more, even though I'm promoting to use at least a 64-bit kernel on 64-bit
capable hw for many years, irrespective of RT.
Jan
>
> I tried 4.19.13-rt1-cip1 among others. Crash is early in boot, I can
> try some early printing...
>
> Best regards,
> Pavel
>
--
Siemens AG, Corporate Technology, CT RDA IOT SES-DE
Corporate Competence Center Embedded Linux
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: PREEMPT_RT_FULL on x86-32 machine
2019-06-24 10:53 ` Pavel Machek
2019-06-24 10:58 ` Jan Kiszka
@ 2019-06-24 13:27 ` Sebastian Andrzej Siewior
2019-06-28 12:51 ` Pavel Machek
1 sibling, 1 reply; 6+ messages in thread
From: Sebastian Andrzej Siewior @ 2019-06-24 13:27 UTC (permalink / raw)
To: Pavel Machek; +Cc: Jan Kiszka, linux-rt-users, kernel list, mwhitehe
On 2019-06-24 12:53:40 [+0200], Pavel Machek wrote:
> Hi!
Hi,
> > >Is full preemption supposed to work on x86-32 machines?
> > >
> > >Because it does not work for me. It crashes early in boot, no messages
> > >make it to console. Similar configuration for x86-64 boots ok.
> > >
> >
> > Maybe you can also tell which version(s) you tried, and in which
> > configuration(s), and how the crash looked like.
>
> I wanted to know if the configuration is supposed to work at all
> before starting heavy debugging. From your reply I assume that it
> should work.
>
> I tried 4.19.13-rt1-cip1 among others. Crash is early in boot, I can
> try some early printing...
The latest is v4.19.50-rt22 I would suggest that one. There was a bug
which was fixed either in 4.19.23-rt14 or in the following version.
If the latest one does not work please let me know and I will have a
look.
> Best regards,
> Pavel
Sebastian
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: PREEMPT_RT_FULL on x86-32 machine
2019-06-24 13:27 ` Sebastian Andrzej Siewior
@ 2019-06-28 12:51 ` Pavel Machek
0 siblings, 0 replies; 6+ messages in thread
From: Pavel Machek @ 2019-06-28 12:51 UTC (permalink / raw)
To: Sebastian Andrzej Siewior
Cc: Jan Kiszka, linux-rt-users, kernel list, mwhitehe
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Hi!
> > > >Is full preemption supposed to work on x86-32 machines?
> > > >
> > > >Because it does not work for me. It crashes early in boot, no messages
> > > >make it to console. Similar configuration for x86-64 boots ok.
> > > >
> > >
> > > Maybe you can also tell which version(s) you tried, and in which
> > > configuration(s), and how the crash looked like.
> >
> > I wanted to know if the configuration is supposed to work at all
> > before starting heavy debugging. From your reply I assume that it
> > should work.
> >
> > I tried 4.19.13-rt1-cip1 among others. Crash is early in boot, I can
> > try some early printing...
>
> The latest is v4.19.50-rt22 I would suggest that one. There was a bug
> which was fixed either in 4.19.23-rt14 or in the following version.
>
> If the latest one does not work please let me know and I will have a
> look.
Ok, let me try again. It seems the kernel based on the latest one
works ok. Even suspend/resume works.
Thanks,
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2019-06-28 12:51 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
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2019-06-22 8:19 PREEMPT_RT_FULL on x86-32 machine Pavel Machek
2019-06-24 9:29 ` Jan Kiszka
2019-06-24 10:53 ` Pavel Machek
2019-06-24 10:58 ` Jan Kiszka
2019-06-24 13:27 ` Sebastian Andrzej Siewior
2019-06-28 12:51 ` Pavel Machek
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