[01/24] powerpc/mm: Move exception_enter/exit to a do_page_fault wrapper

[Michael Ellerman]

Christophe LEROY <christophe.leroy at c-s.fr> writes:

> Le 07/08/2017 à 12:41, Michael Ellerman a écrit :
>> On Wed, 2017-07-19 at 04:49:23 UTC, Benjamin Herrenschmidt wrote:
>>> This will allow simplifying the returns from do_page_fault
>>>
>>> Signed-off-by: Benjamin Herrenschmidt <benh at kernel.crashing.org>
>> 
>> Series applied to powerpc next, thanks.
>> 
>> https://git.kernel.org/powerpc/c/7afad422ac61067473d5f3d20bbd54
>
> Boot failure on the 8xx:
>
> [    6.029556] Failed to execute /init (error -14)
> [    6.034623] Starting init: /bin/sh exists but couldn't execute it 
> (error -14)
> [    6.041489] Kernel panic - not syncing: No working init found.  Try 
> passing init= option to kernel. See Linux 
> Documentation/admin-guide/init.rst for guidance.
> [    6.055518] CPU: 0 PID: 1 Comm: init Not tainted 
> 4.13.0-rc3-s3k-dev-00143-g7aa62e972a56 #56
> [    6.063745] Call Trace:
> [    6.066224] [c60f1ed0] [c001a624] panic+0x108/0x250 (unreliable)
> [    6.072140] [c60f1f30] [c0002640] rootfs_mount+0x0/0x58
> [    6.077311] [c60f1f40] [c000cb80] ret_from_kernel_thread+0x5c/0x64
> [    6.083405] Rebooting in 180 seconds..
>
>
> Bisected to c433ec0455f921eaf8dd0262a718ce6f8ad62ea2 ("powerpc/mm: 
> Pre-filter SRR1 bits before do_page_fault()")

Sorry about that. I don't have a way to test 8xx.

> Will see tomorrow what's wrong with that.

Thanks.

cheers