linux-kernel - Re: [uml-devel] [PATCH] um: Add mark_rodata

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Message-Id: <614EDA29-4BC8-4DE8-BEFA-8D251FF68C6C@m3y3r.de>
Date:   Mon, 22 May 2017 22:40:07 +0200
From:   Thomas Meyer <thomas@...3r.de>
To:     Richard Weinberger <richard@....at>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        user-mode-linux-devel <user-mode-linux-devel@...ts.sourceforge.net>
Subject: Re: [uml-devel] [PATCH] um: Add mark_rodata_ro support.


> Am 22.05.2017 um 21:37 schrieb Richard Weinberger <richard@....at>:
> 
> Thomas,
> 
>> Am 22.05.2017 um 21:18 schrieb Thomas Meyer:
>> 
>>> Am 22.05.2017 um 20:34 schrieb Richard Weinberger <richard@....at>:
>>> 
>>> Thomas,
>>> 
>>>> Am 22.05.2017 um 20:14 schrieb Thomas Meyer:
>>>> It's purely cosmetic; to get rid of the boot message: "This architecture does not have kernel memory protection." in init/main.c
>>>> 
>>>> Which isn't true for UML as all read only stuff should end up in a read only ELF section. Shouldn't it?
>>> 
>>> Hmm, reading /proc/<pid of uml>/maps tells a different story on my host.
>>> Did you check?
>> 
>> No... I may should have done so...
>> 
>> Okay, but it should be possible to mprotect those regions ?
> 
> Yes, it should.
> Can you give it a try?

Will do so!

> 
> Thanks,
> //richard
> 
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