linux-kernel - Re: [PATCH] [v3] x86/mm/mpx: Work around MPX erratum SKD046

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Date:	Thu, 12 May 2016 09:16:03 +0200
From:	Ingo Molnar <mingo@...nel.org>
To:	Dave Hansen <dave@...1.net>
Cc:	linux-kernel@...r.kernel.org, dave.hansen@...ux.intel.com,
	luto@...capital.net, bp@...en8.de, brgerst@...il.com,
	dvlasenk@...hat.com, hpa@...or.com, torvalds@...ux-foundation.org,
	peterz@...radead.org, tglx@...utronix.de
Subject: Re: [PATCH] [v3] x86/mm/mpx: Work around MPX erratum SKD046


* Ingo Molnar <mingo@...nel.org> wrote:

> > Changes from v1:
> >  * Unconditionally enable workaround on all CPUs with MPX despite
> >    whether we know it to be affected or not
> >  * Add a pr_warn() when the workaround is active
> > 
> > Changes from v2:
> >  * fix build breakage from #ifdefs in bug.h

It now emits ugly warnings (x86-64 defconfig):

./arch/x86/include/asm/bugs.h:7:31: warning: ‘struct cpuinfo_x86’ declared inside parameter list
./arch/x86/include/asm/bugs.h:7:31: warning: its scope is only this definition or declaration, which is probably not what you want

Thanks,

	Ingo