From: fkan@apm.com (Feng Kan)
To: linux-arm-kernel@lists.infradead.org
Subject: Kexec on arm64
Date: Tue, 29 Jul 2014 20:26:34 -0700 [thread overview]
Message-ID: <CAL85gmAjcnh77CfuRiHsiD8SdJFsQfm=+kM-AuvxVb_gKMiOyA@mail.gmail.com> (raw)
In-Reply-To: <CAFdej00J2mJwcg2Cy6CHVuuQZ4uQ2zZg8oErGPi0uPejievB+Q@mail.gmail.com>
>
> But I had some luck when I did the same steps with L3 cache
> disabled. According to http://www.spinics.net/lists/arm-kernel/msg329541.html
> it has an L3 cache. Luckily I was able to disable it in u-boot.
>
> With the L3 cache disabled configuration I am able to
> do "kexec -e". Please see the log attached.
>
> Feng,
> I doubt kernel is unaware of the presence of L3 cache, this subsequently
> makes "kexec -e" to fail.
Yes, L3 is turned on prior to entering Linux. It is used when Linux
enable cache in
the MMU.
>
> Do you have any idea how to make the kernel to take control of L3 cache?
We don't have this code. Using address 0 to get back to spin address would
require you to disable cache prior to jump.
>
> --Arun
next prev parent reply other threads:[~2014-07-30 3:26 UTC|newest]
Thread overview: 61+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CAFdej006OSyhgDcJ2iZdbjt+PtysN=i_+9Dr4GTmr=+t5yg4Kw@mail.gmail.com>
2014-07-15 17:04 ` Kexec on arm64 Geoff Levand
2014-07-16 17:57 ` Feng Kan
2014-07-16 23:04 ` Geoff Levand
2014-07-22 9:44 ` Arun Chandran
2014-07-22 13:25 ` Arun Chandran
2014-07-24 0:38 ` Geoff Levand
2014-07-24 9:36 ` Mark Rutland
2014-07-24 12:49 ` Arun Chandran
2014-07-25 0:17 ` Geoff Levand
2014-07-25 10:31 ` Arun Chandran
2014-07-25 10:36 ` Mark Rutland
2014-07-25 11:48 ` Arun Chandran
2014-07-25 12:14 ` Mark Rutland
2014-07-25 15:29 ` Arun Chandran
2014-07-26 0:18 ` Geoff Levand
2014-07-28 15:00 ` Arun Chandran
2014-07-28 15:38 ` Mark Rutland
2014-07-29 0:09 ` Geoff Levand
2014-07-29 9:10 ` Mark Rutland
2014-07-29 12:32 ` Arun Chandran
2014-07-29 13:35 ` Mark Rutland
2014-07-29 21:19 ` Geoff Levand
2014-07-30 7:22 ` Arun Chandran
2014-08-01 11:13 ` Arun Chandran
2014-08-03 14:47 ` Mark Rutland
2014-08-04 10:16 ` Arun Chandran
2014-08-04 11:35 ` Mark Rutland
2014-08-07 0:40 ` Geoff Levand
2014-08-07 9:59 ` Mark Rutland
2014-08-07 17:09 ` Geoff Levand
2014-08-04 17:21 ` Geoff Levand
2014-08-06 13:54 ` Arun Chandran
2014-08-06 15:51 ` Arun Chandran
2014-08-07 20:07 ` Geoff Levand
2014-08-08 5:46 ` Arun Chandran
2014-08-08 10:03 ` Arun Chandran
2014-08-12 5:42 ` Arun Chandran
2014-08-13 11:09 ` Arun Chandran
2014-08-26 22:32 ` Geoff Levand
2014-08-27 4:56 ` Arun Chandran
2014-07-30 5:46 ` Arun Chandran
2014-07-30 9:16 ` Mark Rutland
2014-07-30 7:01 ` Arun Chandran
2014-07-25 10:26 ` Arun Chandran
2014-07-25 11:29 ` Mark Rutland
2014-07-24 11:50 ` Arun Chandran
2014-07-30 3:26 ` Feng Kan [this message]
2014-07-24 0:10 ` Geoff Levand
2014-07-24 9:13 ` Mark Rutland
2014-07-09 10:13 Arun Chandran
2014-07-09 13:58 ` Arun Chandran
2014-07-09 18:49 ` Geoff Levand
2014-07-11 9:23 ` Arun Chandran
2014-07-11 16:58 ` Geoff Levand
2014-07-11 11:26 ` Arun Chandran
2014-07-12 0:19 ` Geoff Levand
2014-07-14 12:21 ` Arun Chandran
2014-07-11 15:43 ` Arun Chandran
2014-07-14 22:05 ` Geoff Levand
2014-07-15 15:28 ` Arun Chandran
2014-07-09 18:33 ` Geoff Levand
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