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From:   Michael Ellerman <patch-notifications@ellerman.id.au>
To:     Michael Ellerman <mpe@ellerman.id.au>,
        Christophe Leroy <christophe.leroy@csgroup.eu>,
        Paul Mackerras <paulus@samba.org>,
        Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc:     linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org
In-Reply-To: <c6eabb4fb6c156f75d56dcbcc6f243e5ac0fba42.1629791763.git.christophe.leroy@csgroup.eu>
References: <c6eabb4fb6c156f75d56dcbcc6f243e5ac0fba42.1629791763.git.christophe.leroy@csgroup.eu>
Subject: Re: [PATCH v2] powerpc: Avoid link stack corruption in misc asm functions
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Date:   Fri, 27 Aug 2021 23:15:57 +1000
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On Tue, 24 Aug 2021 07:56:35 +0000 (UTC), Christophe Leroy wrote:
> bl;mflr is used at several places to get code position.
> 
> Use bcl 20,31,+4 instead of bl in order to preserve link stack.
> 
> See commit c974809a26a1 ("powerpc/vdso: Avoid link stack corruption
> in __get_datapage()") for details.
> 
> [...]

Applied to powerpc/next.

[1/1] powerpc: Avoid link stack corruption in misc asm functions
      https://git.kernel.org/powerpc/c/33e1402435cb9f3021439a15935ea2dc69ec1844

cheers