From: Helge Deller <deller@gmx.de>
To: unlisted-recipients:; (no To-header on input)
Cc: Mikulas Patocka <mpatocka@redhat.com>,
John David Anglin <dave.anglin@bell.net>,
linux-parisc@vger.kernel.org
Subject: Re: Aw: Re: kernel 4.6-rc unbootable due to module changes
Date: Fri, 8 Apr 2016 21:43:09 +0200 [thread overview]
Message-ID: <570809CD.3060203@gmx.de> (raw)
In-Reply-To: <trinity-2288a664-7ecc-47ba-9dbb-630a8f9060c7-1460127541349@3capp-gmx-bs27>
On 08.04.2016 16:59, Helge Deller wrote:
>>>>> So, it seems that handling exceptions from modules never worked on
>>>>> pa-risc, it was just masked by the fact that exceptions from modules don't
>>>>> happen during normal use.
>>>
>>> Sadly you seem to be right :-(
>>> I did more testing with the test_user_copy module (with vanilla kernel 4.5 and without the relative extable support).
>>
>> The attached patch fixes the exception handling for modules for me.
>> This is realized by saving the %r27 register in the fault handler and restoring it in the exception path.
>> With this patch the "test_user_copy" kernel module succeeds when loaded.
>> Mikulas, can you try it with your testcases ?
>
> Attached patch additionally adds support for resolving R_PARISC_PCREL32 relocations,
> which fixes the 32bit extable change which was introduced with kernel 4.6-rc1.
>
> With that I think we have all module issues resolved ?
I've pushed all relevant changes into my for-next tree which can be pulled:
http://git.kernel.org/cgit/linux/kernel/git/deller/parisc-linux.git/log/?h=for-next
Helge
next prev parent reply other threads:[~2016-04-08 19:43 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-05 17:31 kernel 4.6-rc unbootable due to module changes Mikulas Patocka
2016-04-05 17:36 ` Mikulas Patocka
2016-04-05 18:54 ` Helge Deller
2016-04-05 20:15 ` Mikulas Patocka
2016-04-06 14:30 ` Mikulas Patocka
2016-04-06 21:44 ` Helge Deller
2016-04-07 22:48 ` Helge Deller
2016-04-08 12:06 ` Aw: " Helge Deller
2016-04-08 14:59 ` Helge Deller
2016-04-08 19:43 ` Helge Deller [this message]
2016-04-05 20:18 ` John David Anglin
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