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

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Message-ID: <20160218103604.GA4019@pd.tnic>
Date:	Thu, 18 Feb 2016 11:36:04 +0100
From:	Borislav Petkov <bp@...en8.de>
To:	Ingo Molnar <mingo@...nel.org>
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()

On Thu, Feb 18, 2016 at 11:34:20AM +0100, Ingo Molnar wrote:
> Does the build fail - or is it just an unused function? If the latter
> then I'd rather leave the #ifdef out.

Yep, it does fail:

https://lkml.kernel.org/r/20160207165524.GF5862@pd.tnic

due to ex_handler_fault not being visible to UML.

-- 
Regards/Gruss,
    Boris.

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