From: Russell King - ARM Linux <linux@arm.linux.org.uk>
To: Robert Jarzmik <robert.jarzmik@free.fr>
Cc: Dave Martin <Dave.Martin@arm.com>,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH] ARM: fix alignement of __bug_table section entries
Date: Mon, 7 Sep 2015 00:54:15 +0100 [thread overview]
Message-ID: <20150906235414.GQ21084@n2100.arm.linux.org.uk> (raw)
In-Reply-To: <87egibw7yh.fsf@belgarion.home>
On Sun, Sep 06, 2015 at 11:31:34PM +0200, Robert Jarzmik wrote:
> Russell King - ARM Linux <linux@arm.linux.org.uk> writes:
>
> >> [1] Approach 1 : translation table sync
> >> =======================================
> ...
> > The important place is in arch/arm/include/asm/domain.h, which is where
> > we manipulate the DACR within probe_kernel_address().
>
> Gah, silly me. But even with [1], I still get an error [2]. I have a
> confirmation that I have a "Page Permission" fault on the
> probe_kernel_address().
Hmm, that's not right. If it's the DACR, then it should be a page domain
fault, not a page permission fault.
> [2] Oops
> ========
> # insmod /tmp/unalign.ko
> RJK1: fsr=23 far=e1c23643 dacr=51
> RJK2: fsr=23 far=e1c23643 dacr=51
> RJK3: fsr=2f far=bf00202c dacr=51
> RJK: fault=4 instr=0x00000000 instrptr=bf00202c
Can you add a show_pte(current->mm, instrptr) to dump those page
table entries please?
--
FTTC broadband for 0.8mile line: currently at 9.6Mbps down 400kbps up
according to speedtest.net.
next prev parent reply other threads:[~2015-09-06 23:54 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-02 6:23 Robert Jarzmik
2015-09-02 10:39 ` Dave Martin
2015-09-05 13:48 ` Robert Jarzmik
2015-09-05 14:25 ` Russell King - ARM Linux
2015-09-05 17:10 ` Robert Jarzmik
2015-09-05 20:38 ` Russell King - ARM Linux
2015-09-05 22:12 ` Robert Jarzmik
2015-09-06 17:25 ` Robert Jarzmik
2015-09-06 19:48 ` Russell King - ARM Linux
2015-09-06 21:31 ` Robert Jarzmik
2015-09-06 23:54 ` Russell King - ARM Linux [this message]
2015-09-08 17:01 ` Robert Jarzmik
2015-09-08 20:08 ` Russell King - ARM Linux
2015-09-08 20:46 ` Robert Jarzmik
2015-09-09 23:06 ` Robert Jarzmik
2015-09-10 19:01 ` Robert Jarzmik
2015-09-10 19:16 ` Russell King - ARM Linux
2015-09-10 20:53 ` Robert Jarzmik
2015-09-11 9:54 ` Russell King - ARM Linux
2015-09-11 9:56 ` [PATCH 1/2] ARM: domains: thread_info.h no longer needs asm/domains.h Russell King
2015-09-11 9:56 ` [PATCH 2/2] ARM: domains: add memory dependencies to get_domain/set_domain Russell King
2015-09-11 14:56 ` Robert Jarzmik
2015-09-11 15:10 ` Russell King - ARM Linux
2015-09-11 15:40 ` Robert Jarzmik
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