From: Christophe Leroy <christophe.leroy@c-s.fr>
To: Aaro Koskinen <aaro.koskinen@iki.fi>
Cc: linuxppc-dev@lists.ozlabs.org
Subject: Re: [BISECTED] kexec regression on PowerBook G4
Date: Fri, 24 May 2019 09:40:30 +0200 [thread overview]
Message-ID: <969271d1-0943-42e6-8992-77b20e305e48@c-s.fr> (raw)
In-Reply-To: <20190524073615.GD5234@darkstar.musicnaut.iki.fi>
Le 24/05/2019 à 09:36, Aaro Koskinen a écrit :
> Hi,
>
> On Fri, May 24, 2019 at 08:08:36AM +0200, Christophe Leroy wrote:
>>> Le 24/05/2019 à 00:23, Aaro Koskinen a écrit :
>>>> Unfortunately still no luck... The crash is pretty much the same with
>>>> both
>>>> changes.
>>>
>>> Right. In fact change_page_attr() does nothing because this part of RAM is
>>> mapped by DBATs so v_block_mapped() returns not NULL.
>>>
>>> So, we have to set an IBAT for this area. I'll try and send you a new
>>> patch for that before noon (CET).
>>>
>>
>> patch sent out. In the patch I have also added a printk to print the buffer
>> address, so if the problem still occurs, we'll know if the problem is really
>> at the address of the buffer or if we are wrong from the beginning.
>
> Reboot code buffer at ef0c3000
> Bye!
> BUG: Unable to handle kernel instruction fetch
> Faulting instruction address: 0xef0c3000
>
Oops, I forgot to call update_bats() after setibat().
Can you add it and retry ?
Thanks
Christophe
next prev parent reply other threads:[~2019-05-24 7:42 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-21 22:18 [BISECTED] kexec regression on PowerBook G4 Aaro Koskinen
2019-05-22 6:14 ` Christophe Leroy
2019-05-22 7:44 ` Christophe Leroy
2019-05-22 20:13 ` Aaro Koskinen
2019-05-22 20:33 ` LEROY Christophe
[not found] ` <20190522211724.GC456@darkstar.musicnaut.iki.fi>
2019-05-23 5:24 ` [RFC PATCH] powerpc: fix kexec failure on book3s/32 Christophe Leroy
2019-05-23 5:33 ` [BISECTED] kexec regression on PowerBook G4 Christophe Leroy
2019-05-23 17:27 ` Aaro Koskinen
2019-05-23 18:58 ` Christophe Leroy
2019-05-23 22:23 ` Aaro Koskinen
2019-05-24 5:46 ` Christophe Leroy
2019-05-24 6:08 ` Christophe Leroy
2019-05-24 7:36 ` Aaro Koskinen
2019-05-24 7:40 ` Christophe Leroy [this message]
2019-05-24 13:29 ` Aaro Koskinen
2019-05-24 13:35 ` Christophe Leroy
2019-05-24 6:05 ` [RFC PATCH v2] powerpc: fix kexec failure on book3s/32 Christophe Leroy
2019-05-24 13:38 ` Christophe Leroy
2019-05-22 20:07 ` [BISECTED] kexec regression on PowerBook G4 Aaro Koskinen
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