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Subject: Re: pkeys on POWER: Access rights not reset on execve
References: <20180603201832.GA10109@ram.oc3035372033.ibm.com>
 <4e53b91f-80a7-816a-3e9b-56d7be7cd092@redhat.com>
 <20180604140135.GA10088@ram.oc3035372033.ibm.com>
 <f2f61c24-8e8f-0d36-4e22-196a2a3f7ca7@redhat.com>
 <20180604190229.GB10088@ram.oc3035372033.ibm.com>
 <30040030-1aa2-623b-beec-dd1ceb3eb9a7@redhat.com>
 <20180608023441.GA5573@ram.oc3035372033.ibm.com>
 <2858a8eb-c9b5-42ce-5cfc-74a4b3ad6aa9@redhat.com>
 <20180611172305.GB5697@ram.oc3035372033.ibm.com>
 <30f5cb0e-e09a-15e6-f77d-a3afa422a651@redhat.com>
 <20180611200807.GA5773@ram.oc3035372033.ibm.com>
From: Florian Weimer <fweimer@redhat.com>
Message-ID: <c2931344-d2e8-46c0-b70c-97567ae7f7a0@redhat.com>
Date: Tue, 12 Jun 2018 14:17:21 +0200
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Sender: owner-linux-mm@kvack.org
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To: Ram Pai <linuxram@us.ibm.com>
Cc: Linux-MM <linux-mm@kvack.org>, linuxppc-dev <linuxppc-dev@lists.ozlabs.org>, Andy Lutomirski <luto@kernel.org>, Dave Hansen <dave.hansen@intel.com>

On 06/11/2018 10:08 PM, Ram Pai wrote:
> Ok. try this patch. This patch is on top of the 5 patches that I had
> sent last week i.e  "[PATCH  0/5] powerpc/pkeys: fixes to pkeys"
> 
> The following is a draft patch though to check if it meets your
> expectations.
> 
> commit fe53b5fe2dcb3139ea27ade3ae7cbbe43c4af3be
> Author: Ram Pai<linuxram@us.ibm.com>
> Date:   Mon Jun 11 14:57:34 2018 -0500
> 
>      powerpc/pkeys: Deny read/write/execute by default

With this patch, my existing misc/tst-pkey test in glibc passes.  The 
in-tree version still has some incorrect assumptions on implementation 
behavior, but those are test bugs.  The kernel behavior with your patch 
look good to me.  Thanks.

Florian