linux-kernel - Re: [regression drm/noveau] suspend to ram -> BOOM: exception RIP: drm_calc_vbltimestamp_from

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Message-ID: <1500086755.5129.10.camel@gmx.de>
Date:   Sat, 15 Jul 2017 04:45:55 +0200
From:   Mike Galbraith <efault@....de>
To:     Josh Poimboeuf <jpoimboe@...hat.com>
Cc:     Peter Zijlstra <peterz@...radead.org>,
        Ilia Mirkin <imirkin@...m.mit.edu>,
        LKML <linux-kernel@...r.kernel.org>,
        "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
        "nouveau@...ts.freedesktop.org" <nouveau@...ts.freedesktop.org>,
        David Airlie <airlied@...ux.ie>,
        Ben Skeggs <bskeggs@...hat.com>, jeyu@...nel.org
Subject: Re: [regression drm/noveau] suspend to ram -> BOOM: exception RIP:
 drm_calc_vbltimestamp_from_scanoutpos+335

On Fri, 2017-07-14 at 14:42 -0500, Josh Poimboeuf wrote:
> 
> Does this fix it?

Yup, both READONLY __bug_table and "extra stern" warning are gone.

> diff --git a/arch/x86/include/asm/bug.h b/arch/x86/include/asm/bug.h
> index 39e702d..aa6b202 100644
> --- a/arch/x86/include/asm/bug.h
> +++ b/arch/x86/include/asm/bug.h
> @@ -35,7 +35,7 @@
>  #define _BUG_FLAGS(ins, flags)						\
>  do {									\
>  	asm volatile("1:\t" ins "\n"					\
> -		     ".pushsection __bug_table,\"a\"\n"			\
> +		     ".pushsection __bug_table,\"aw\"\n"		\
>  		     "2:\t" __BUG_REL(1b) "\t# bug_entry::bug_addr\n"	\
>  		     "\t"  __BUG_REL(%c0) "\t# bug_entry::file\n"	\
>  		     "\t.word %c1"        "\t# bug_entry::line\n"	\
> @@ -52,7 +52,7 @@ do {									\
>  #define _BUG_FLAGS(ins, flags)						\
>  do {									\
>  	asm volatile("1:\t" ins "\n"					\
> -		     ".pushsection __bug_table,\"a\"\n"			\
> +		     ".pushsection __bug_table,\"aw\"\n"		\
>  		     "2:\t" __BUG_REL(1b) "\t# bug_entry::bug_addr\n"	\
>  		     "\t.word %c0"        "\t# bug_entry::flags\n"	\
>  		     "\t.org 2b+%c1\n"					\