Re: Can PAX and Rt-patch co-exist ?

[Corey Minyard <cminyard@mvista.com>]

On 05/02/2014 02:40 AM, Mau Z wrote:
> Thanks
>
> The answer is very surprising.
> I would assume that more than one person would have such an experience.

Well, the LTSI organization may have done it.  That's all I can think
of, though.

>
>
> I am curious regarding the magnitude of work to be done. I am
> especially intersted what happens when you have to handle another
> Linux version for your distribution.
>
> Is this job done just once (for one specific Linux version) ?

Once for a specific Linux version, 3.10.

>  or
> You do the job once, and then do the same fixes on the other Linux
> version (more or less) ?
>  or
> You have to do the same job all over again in every linux version ?

We will on the next version we release, yes.

>
>
> Is the following discription correct ?
> Basically the job is
> 1) Download kernel
> 2) apply RT-patch
> 3) apply PAX patch
> 4) compile and fix warnings and errors

Well, there's testing :).  But basically yes.  Resolving the conflicts
is the biggest deal, really, in the above process.  And testing is a lot
bigger than that :).

We integrate a lot of other things, so it's hard to remember the
specific RT/PaX issues.

-corey

>
> Thanks
> again
> zmau
>
>
> On Thu, May 1, 2014 at 2:53 AM, Corey Minyard <cminyard@mvista.com> wrote:
>> On 04/30/2014 05:47 PM, Mau Z wrote:
>>> I have some more questions concerning the relation between PAX and the
>>> RT-Patch :
>>> A) Can they work together ?
>> It can be made to work.  We have it working together in our distribution.
>>
>>> B) Do you know if it matters which patch is applied first ?
>> Not really.
>>
>>> C) Is there any documentation about this subject ?
>> None that I know of.  I imagine that I'm the only person who has ever
>> done this.
>>
>> There are some conflicts (a few are non-trivial, but not excessively
>> complicated, IIRC).  But it's not something insurmountable.  You do have
>> to have a fairly good understanding of kernel code.
>>
>> -corey
>>
>>>
>>> Thanks
>>> zmau
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