From: Christophe Leroy <christophe.leroy@c-s.fr>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Paul Mackerras <paulus@samba.org>,
Michael Ellerman <mpe@ellerman.id.au>,
erhard_f@mailbox.org
Cc: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] powerpc/32s: fix initial setup of segment registers on secondary CPU
Date: Tue, 11 Jun 2019 18:46:56 +0200 [thread overview]
Message-ID: <b60946f5-dc70-61ce-e266-af91890cb702@c-s.fr> (raw)
In-Reply-To: <be07403806abc56ec027f6d47468411876e18bb5.1560267983.git.christophe.leroy@c-s.fr>
Le 11/06/2019 à 17:47, Christophe Leroy a écrit :
> The patch referenced below moved the loading of segment registers
> out of load_up_mmu() in order to do it earlier in the boot sequence.
> However, the secondary CPU still needs it to be done when loading up
> the MMU.
>
> Reported-by: Erhard F. <erhard_f@mailbox.org>
> Fixes: 215b823707ce ("powerpc/32s: set up an early static hash table for KASAN")
Cc: stable@vger.kernel.org
> Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
> ---
> arch/powerpc/kernel/head_32.S | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/arch/powerpc/kernel/head_32.S b/arch/powerpc/kernel/head_32.S
> index 1d5f1bd0dacd..f255e22184b4 100644
> --- a/arch/powerpc/kernel/head_32.S
> +++ b/arch/powerpc/kernel/head_32.S
> @@ -752,6 +752,7 @@ __secondary_start:
> stw r0,0(r3)
>
> /* load up the MMU */
> + bl load_segment_registers
> bl load_up_mmu
>
> /* ptr to phys current thread */
>
next prev parent reply other threads:[~2019-06-11 16:47 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-11 15:47 Christophe Leroy
2019-06-11 16:46 ` Christophe Leroy [this message]
2019-06-18 12:31 ` Michael Ellerman
2019-06-18 12:44 ` Christophe Leroy
2019-06-16 12:23 ` Michael Ellerman
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