linux-kernel - Re: [PATCH] powerpc/uaccess: Don't set KUEP by default on book3s/32

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Message-Id: <159168035085.1381411.2229684027587649281.b4-ty@ellerman.id.au>
Date:   Tue,  9 Jun 2020 15:28:41 +1000 (AEST)
From:   Michael Ellerman <patch-notifications@...erman.id.au>
To:     Christophe Leroy <christophe.leroy@....fr>,
        Paul Mackerras <paulus@...ba.org>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Michael Ellerman <mpe@...erman.id.au>
Cc:     linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] powerpc/uaccess: Don't set KUEP by default on book3s/32

On Wed, 15 Apr 2020 14:57:11 +0000 (UTC), Christophe Leroy wrote:
> On book3s/32, KUEP is an heavy process as it requires to
> set/unset the NX bit in each of the 12 user segments
> everytime the kernel is entered/exited from/to user space.
> 
> Don't select KUEP by default on book3s/32.

Applied to powerpc/next.

[1/1] powerpc/uaccess: Don't set KUEP by default on book3s/32
      https://git.kernel.org/powerpc/c/c3ba4dbbd1d05b49ec01efe098e0a78857d3ce22

cheers