linux-kernel - Re: [PATCH v11 3/4] x86, mce: Add __mcsafe

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Message-ID: <20160218103420.GA11011@gmail.com>
Date:	Thu, 18 Feb 2016 11:34:20 +0100
From:	Ingo Molnar <mingo@...nel.org>
To:	Borislav Petkov <bp@...en8.de>
Cc:	Tony Luck <tony.luck@...el.com>, linux-kernel@...r.kernel.org,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Subject: Re: [PATCH v11 3/4] x86, mce: Add __mcsafe_copy()


* Borislav Petkov <bp@...en8.de> wrote:

> On Thu, Feb 18, 2016 at 09:21:07AM +0100, Ingo Molnar wrote:
> > > +#ifndef CONFIG_UML
> > 
> > Why is this UML quirk needed? No other memcpy functions have it. Theoretically UML 
> > could introduce the notion of #MC interruption.
> 
> https://lkml.kernel.org/r/56B7AEEE.5070504@nod.at

Does the build fail - or is it just an unused function? If the latter then I'd 
rather leave the #ifdef out.

Thanks,

	Ingo