RE: [PATCH] powerpc/603: Fix protection of user pages mapped with PROT_NONE

Thank you for maintenance and for following this request.

Regards
Christoph

-----Original Message-----
From: Michael Ellerman <redacted> 
Sent: Sonntag, 14. März 2021 11:01
To: Michael Ellerman <mpe@ellerman.id.au>; Paul Mackerras <redacted>; Benjamin Herrenschmidt <benh@kernel.crashing.org>; PLATTNER Christoph <redacted>; Christophe Leroy <redacted>
Cc: linux-kernel@vger.kernel.org; linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH] powerpc/603: Fix protection of user pages mapped with PROT_NONE

On Mon, 1 Feb 2021 06:29:50 +0000 (UTC), Christophe Leroy wrote:

On book3s/32, page protection is defined by the PP bits in the PTE 
which provide the following protection depending on the access keys 
defined in the matching segment register:
- PP 00 means RW with key 0 and N/A with key 1.
- PP 01 means RW with key 0 and RO with key 1.
- PP 10 means RW with both key 0 and key 1.
- PP 11 means RO with both key 0 and key 1.

[...]

Applied to powerpc/fixes.

[1/1] powerpc/603: Fix protection of user pages mapped with PROT_NONE
      https://git.kernel.org/powerpc/c/c119565a15a628efdfa51352f9f6c5186e506a1c

cheers