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Date: Mon, 3 Sep 2018 15:42:22 +0200
From: Pavel Machek <pavel@ucw.cz>
Subject: Re: [PATCH AUTOSEL 4.4 22/47] x86/mm: Remove in_nmi() warning from
 vmalloc_fault()
Message-ID: <20180903134222.GA9051@amd>
References: <20180902131533.184092-1-alexander.levin@microsoft.com>
 <20180902131533.184092-22-alexander.levin@microsoft.com>
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To: Sasha Levin <Alexander.Levin@microsoft.com>
Cc: "stable@vger.kernel.org" <stable@vger.kernel.org>, "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>, Joerg Roedel <jroedel@suse.de>, Thomas Gleixner <tglx@linutronix.de>, "H . Peter Anvin" <hpa@zytor.com>, "linux-mm@kvack.org" <linux-mm@kvack.org>, Linus Torvalds <torvalds@linux-foundation.org>, Andy Lutomirski <luto@kernel.org>, Dave Hansen <dave.hansen@intel.com>, Josh Poimboeuf <jpoimboe@redhat.com>, Juergen Gross <jgross@suse.com>, Peter Zijlstra <peterz@infradead.org>, Borislav Petkov <bp@alien8.de>, Jiri Kosina <jkosina@suse.cz>, Boris Ostrovsky <boris.ostrovsky@oracle.com>, Brian Gerst <brgerst@gmail.com>, David Laight <David.Laight@aculab.com>, Denys Vlasenko <dvlasenk@redhat.com>, Eduardo Valentin <eduval@amazon.com>, Greg KH <gregkh@linuxfoundation.org>, Will Deacon <will.deacon@arm.com>, "aliguori@amazon.com" <aliguori@amazon.com>, Daniel Gruss <daniel.gruss@iaik.tugraz.at>, "hughd@google.com" <hughd@google.com>, "keescook@google.com" <keescook@google.com>, Andrea Arcangeli <aarcange@redhat.com>, Waiman Long <llong@redhat.com>, Arnaldo Carvalho de Melo <acme@kernel.org>, Alexander Shishkin <alexander.shishkin@linux.intel.com>, Jiri Olsa <jolsa@redhat.com>, Namhyung Kim <namhyung@kernel.org>, "joro@8bytes.org" <joro@8bytes.org>


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On Sun 2018-09-02 13:16:04, Sasha Levin wrote:
> From: Joerg Roedel <jroedel@suse.de>
>=20
> [ Upstream commit 6863ea0cda8725072522cd78bda332d9a0b73150 ]
>=20
> 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
							=09
--=20
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blo=
g.html

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