linux-kernel - Re: [PATCH] powerpc/44x: Implement Kernel Userspace Exec Protection (KUEP)

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Message-Id: <162398829401.1363949.16143408531538336640.b4-ty@ellerman.id.au>
Date:   Fri, 18 Jun 2021 13:51:34 +1000
From:   Michael Ellerman <patch-notifications@...erman.id.au>
To:     Paul Mackerras <paulus@...ba.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Christophe Leroy <christophe.leroy@...roup.eu>
Cc:     linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] powerpc/44x: Implement Kernel Userspace Exec Protection (KUEP)

On Wed, 2 Jun 2021 06:42:10 +0000 (UTC), Christophe Leroy wrote:
> Powerpc 44x has two bits for exec protection in TLBs: one
> for user (UX) and one for superviser (SX).
> 
> Clear SX on user pages in TLB miss handlers to provide KUEP.

Applied to powerpc/next.

[1/1] powerpc/44x: Implement Kernel Userspace Exec Protection (KUEP)
      https://git.kernel.org/powerpc/c/10248dcba1205042a3a0ea65eb441030702d97cd

cheers