linux-kernel - Re: [PATCH AUTOSEL 4.4 22/47] x86/mm: Remove in_nmi() warning from vmalloc

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Date:   Mon, 3 Sep 2018 15:42:22 +0200
From:   Pavel Machek <pavel@....cz>
To:     Sasha Levin <Alexander.Levin@...rosoft.com>
Cc:     "stable@...r.kernel.org" <stable@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Joerg Roedel <jroedel@...e.de>,
        Thomas Gleixner <tglx@...utronix.de>,
        "H . Peter Anvin" <hpa@...or.com>,
        "linux-mm@...ck.org" <linux-mm@...ck.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Andy Lutomirski <luto@...nel.org>,
        Dave Hansen <dave.hansen@...el.com>,
        Josh Poimboeuf <jpoimboe@...hat.com>,
        Juergen Gross <jgross@...e.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Borislav Petkov <bp@...en8.de>, Jiri Kosina <jkosina@...e.cz>,
        Boris Ostrovsky <boris.ostrovsky@...cle.com>,
        Brian Gerst <brgerst@...il.com>,
        David Laight <David.Laight@...lab.com>,
        Denys Vlasenko <dvlasenk@...hat.com>,
        Eduardo Valentin <eduval@...zon.com>,
        Greg KH <gregkh@...uxfoundation.org>,
        Will Deacon <will.deacon@....com>,
        "aliguori@...zon.com" <aliguori@...zon.com>,
        Daniel Gruss <daniel.gruss@...k.tugraz.at>,
        "hughd@...gle.com" <hughd@...gle.com>,
        "keescook@...gle.com" <keescook@...gle.com>,
        Andrea Arcangeli <aarcange@...hat.com>,
        Waiman Long <llong@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...hat.com>,
        Namhyung Kim <namhyung@...nel.org>,
        "joro@...tes.org" <joro@...tes.org>
Subject: Re: [PATCH AUTOSEL 4.4 22/47] x86/mm: Remove in_nmi() warning from
 vmalloc_fault()

On Sun 2018-09-02 13:16:04, Sasha Levin wrote:
> From: Joerg Roedel <jroedel@...e.de>
> 
> [ Upstream commit 6863ea0cda8725072522cd78bda332d9a0b73150 ]
> 
> It is perfectly okay to take page-faults, especially on the
> vmalloc area while executing an NMI handler. Remove the
> warning.

I don't think this meets stable kernel criteria, as documented.
								Pavel
								
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

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