From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
To: Robert Johnson <rjohnson@sierraphotonics.com>
Cc: "linux-rt-users@vger.kernel.org" <linux-rt-users@vger.kernel.org>
Subject: Re: PowerPC PPC32 CONFIG_HIGHMEM dependency question
Date: Fri, 21 Mar 2014 21:02:37 +0100 [thread overview]
Message-ID: <20140321200237.GA28289@linutronix.de> (raw)
In-Reply-To: <73957144b3df4c0cad00b7a65c8ca41c@SPIEXCHMAIL01.sierraphotonics.com>
* Robert Johnson | 2014-03-21 15:12:20 [+0000]:
>>> Robert Johnson | 2014-03-17 17:41:25 [+0000]:
>>> Is there any way to get CONFIG_PREEMPT_RT_FULL to work with CONFIG_HIGHMEM?
>
>> Sebastian Andrzej Siewior | 2014-03-18 03:55:
>> Yes. The trick is to look either at the ARM code or at the x86 code and do something similar for powerpc.
>
>Which ARM and x86 source files should be referenced?
>
>Which powerpc source files would need to be modified?
In the queue there is
| # KMAP/HIGHMEM
| mm-rt-kmap-atomic-scheduling.patch
| 0002-x86-highmem-add-a-already-used-pte-check.patch
| 0003-arm-highmem-flush-tlb-on-unmap.patch
| arm-enable-highmem-for-rt.patch
which should cover x86 and arm. And now you need to do something like
that for powerpc.
Sebastian
prev parent reply other threads:[~2014-03-21 20:02 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-03-17 17:41 PowerPC PPC32 CONFIG_HIGHMEM dependency question Robert Johnson
2014-03-18 10:54 ` Sebastian Andrzej Siewior
2014-03-21 15:12 ` Robert Johnson
2014-03-21 20:02 ` Sebastian Andrzej Siewior [this message]
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