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From: Christophe Leroy <christophe.leroy@c-s.fr>
To: Rasmus Villemoes <linux@rasmusvillemoes.dk>,
	Li Yang <leoyang.li@nxp.com>, Qiang Zhao <qiang.zhao@nxp.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: "linuxppc-dev@lists.ozlabs.org" <linuxppc-dev@lists.ozlabs.org>,
	Scott Wood <oss@buserror.net>,
	linux-arm-kernel@lists.infradead.org,
	LKML <linux-kernel@vger.kernel.org>
Subject: [Regression 5.6-rc1][Bisected b6231ea2b3c6] Powerpc 8xx doesn't boot anymore
Date: Wed, 12 Feb 2020 14:24:36 +0000	[thread overview]
Message-ID: <0d45fa64-51ee-0052-cb34-58c770c5b3ce@c-s.fr> (raw)

Hi Rasmus,

Kernel 5.6-rc1 silently fails on boot.

I bisected the problem to commit b6231ea2b3c6 ("soc: fsl: qe: drop 
broken lazy call of cpm_muram_init()")

I get a bad_page_fault() for an access at address 8 in 
cpm_muram_alloc_common(), called from cpm_uart_console_setup() via 
cpm_uart_allocbuf()

Reverting the guilty commit on top of 5.6-rc1 is not trivial.

In your commit text you explain that cpm_muram_init() is called via 
subsys_initcall. But console init is done before that, so it cannot work.

Do you have a fix for that ?

Thanks
Christophe

NB: Next time, can you please copy powerpc mailing list when changing 
such core parts of powerpc CPUs ?

             reply	other threads:[~2020-02-12 14:24 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-12 14:24 Christophe Leroy [this message]
2020-02-12 14:42 ` Christophe Leroy
2020-02-12 14:50 ` Christophe Leroy
2020-02-13  3:35   ` Qiang Zhao
2020-02-13  6:17     ` Christophe Leroy
2020-02-13  6:36       ` Qiang Zhao
2020-02-13  9:37   ` Rasmus Villemoes
2020-02-13 10:50     ` Christophe Leroy
2020-02-13  7:45 ` Rasmus Villemoes
2020-02-13 10:40   ` Christophe Leroy

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