linux-kernel - Re: [PATCH] powerpc/32s: fix boot failure with DEBUG

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Date:   Wed, 14 Aug 2019 09:44:40 +0200
From:   Jonathan Neuschäfer <j.neuschaefer@....net>
To:     Christophe Leroy <christophe.leroy@....fr>
Cc:     Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Michael Ellerman <mpe@...erman.id.au>, j.neuschaefer@....net,
        linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org
Subject: Re: [PATCH] powerpc/32s: fix boot failure with DEBUG_PAGEALLOC
 without KASAN.

On Wed, Aug 14, 2019 at 05:28:35AM +0000, Christophe Leroy wrote:
> When KASAN is selected, the definitive hash table has to be
> set up later, but there is already an early temporary one.
> 
> When KASAN is not selected, there is no early hash table,
> so the setup of the definitive hash table cannot be delayed.
> 
> Reported-by: Jonathan Neuschafer <j.neuschaefer@....net>
> Fixes: 72f208c6a8f7 ("powerpc/32s: move hash code patching out of MMU_init_hw()")
> Signed-off-by: Christophe Leroy <christophe.leroy@....fr>
> ---

Thanks. This does fix the DEBUG_PAGEALLOC-without-KASAN case.

Tested-by: Jonathan Neuschafer <j.neuschaefer@....net>

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