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From:   Michael Ellerman <patch-notifications@ellerman.id.au>
To:     Finn Thain <fthain@linux-m68k.org>,
        Benjamin Herrenschmidt <benh@kernel.crashing.org>,
        Michael Ellerman <mpe@ellerman.id.au>, userm57@yahoo.com,
        Christophe Leroy <christophe.leroy@csgroup.eu>,
        Paul Mackerras <paulus@samba.org>
Cc:     linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org
In-Reply-To: <731694e0885271f6ee9ffc179eb4bcee78313682.1628003562.git.christophe.leroy@csgroup.eu>
References: <731694e0885271f6ee9ffc179eb4bcee78313682.1628003562.git.christophe.leroy@csgroup.eu>
Subject: Re: [PATCH] powerpc/32s: Fix napping restore in data storage interrupt (DSI)
Message-Id: <162885586674.2317031.2615926550981438565.b4-ty@ellerman.id.au>
Date:   Fri, 13 Aug 2021 21:57:46 +1000
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On Tue, 3 Aug 2021 15:14:27 +0000 (UTC), Christophe Leroy wrote:
> When a DSI (Data Storage Interrupt) is taken while in NAP mode,
> r11 doesn't survive the call to power_save_ppc32_restore().
> 
> So use r1 instead of r11 as they both contain the virtual stack
> pointer at that point.

Applied to powerpc/fixes.

[1/1] powerpc/32s: Fix napping restore in data storage interrupt (DSI)
      https://git.kernel.org/powerpc/c/62376365048878f770d8b7d11b89b8b3e18018f1

cheers