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From: Aaro Koskinen <aaro.koskinen@iki.fi>
To: Christophe Leroy <christophe.leroy@c-s.fr>
Cc: linuxppc-dev@lists.ozlabs.org
Subject: Re: [BISECTED] kexec regression on PowerBook G4
Date: Thu, 23 May 2019 20:27:17 +0300	[thread overview]
Message-ID: <20190523172717.GA5234@darkstar.musicnaut.iki.fi> (raw)
In-Reply-To: <a3619327-14ba-ff34-913f-cf3384284c9a@c-s.fr>

Hi,

On Thu, May 23, 2019 at 07:33:38AM +0200, Christophe Leroy wrote:
> Ok, the Oops confirms that the error is due to executing the kexec control
> code which is located outside the kernel text area.
> 
> My yesterday's proposed change doesn't work because on book3S/32, NX
> protection is based on setting segments to NX, and using IBATs for kernel
> text.
> 
> Can you try the patch I sent out a few minutes ago ?
> (https://patchwork.ozlabs.org/patch/1103827/)

It now crashes with "BUG: Unable to handle kernel instruction fetch"
and the faulting address is 0xef13a000.

A.

  reply	other threads:[~2019-05-23 17:28 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 [this message]
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
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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