From: David Vrabel <david.vrabel@citrix.com>
To: Mel Gorman <mgorman@suse.de>
Cc: Ingo Molnar <mingo@redhat.com>,
Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
Boris Ostrovsky <boris.ostrovsky@oracle.com>,
Steven Noonan <steven@uplinklabs.net>,
Andrew Morton <akpm@linux-foundation.org>,
George Dunlap <george.dunlap@eu.citrix.com>,
Dario Faggioli <dario.faggioli@citrix.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
Rik van Riel <riel@redhat.com>,
Elena Ufimtseva <ufimtseva@gmail.com>,
Linux Kernel mailing List <linux-kernel@vger.kernel.org>,
Linux-MM <linux-mm@kvack.org>, Linux-X86 <x86@kernel.org>,
xen-devel <xen-devel@lists.xenproject.org>
Subject: Re: [PATCH] Subject: [PATCH] xen: Properly account for _PAGE_NUMA during xen pte translations
Date: Tue, 4 Feb 2014 11:48:45 +0000 [thread overview]
Message-ID: <52F0D39D.4050409@citrix.com> (raw)
In-Reply-To: <20140204114445.GM6732@suse.de>
On 04/02/14 11:44, Mel Gorman wrote:
> Steven Noonan forwarded a users report where they had a problem starting
> vsftpd on a Xen paravirtualized guest, with this in dmesg:
>
[...]
>
> The issue could not be reproduced under an HVM instance with the same kernel,
> so it appears to be exclusive to paravirtual Xen guests. He bisected the
> problem to commit 1667918b (mm: numa: clear numa hinting information on
> mprotect) that was also included in 3.12-stable.
>
> The problem was related to how xen translates ptes because it was not
> accounting for the _PAGE_NUMA bit. This patch splits pte_present to add
> a pteval_present helper for use by xen so both bare metal and xen use
> the same code when checking if a PTE is present.
Reviewed-by: David Vrabel <david.vrabel@citrix.com>
Thanks.
David
next prev parent reply other threads:[~2014-02-04 11:48 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-21 23:27 [BISECTED] Linux 3.12.7 introduces page map handling regression Steven Noonan
2014-01-22 1:49 ` Greg Kroah-Hartman
2014-01-22 2:47 ` Linus Torvalds
2014-01-22 3:20 ` Steven Noonan
2014-01-22 5:02 ` Konrad Rzeszutek Wilk
2014-01-22 7:29 ` Steven Noonan
2014-01-22 14:29 ` Daniel Borkmann
2014-01-22 20:18 ` Elena Ufimtseva
2014-01-22 20:33 ` Steven Noonan
2014-01-23 16:23 ` Elena Ufimtseva
2014-01-23 23:20 ` Steven Noonan
2014-01-24 4:28 ` Elena Ufimtseva
2014-01-24 11:05 ` David Vrabel
2014-01-24 13:38 ` Mel Gorman
2014-01-26 18:02 ` Elena Ufimtseva
2014-02-04 6:58 ` Elena Ufimtseva
2014-02-04 11:44 ` [PATCH] Subject: [PATCH] xen: Properly account for _PAGE_NUMA during xen pte translations Mel Gorman
2014-02-04 11:48 ` David Vrabel [this message]
2014-02-04 14:38 ` Konrad Rzeszutek Wilk
2014-01-22 18:07 ` [BISECTED] Linux 3.12.7 introduces page map handling regression Rik van Riel
2014-01-22 18:24 ` Linus Torvalds
2014-01-22 18:39 ` Rik van Riel
2014-01-24 11:43 ` Mel Gorman
2014-01-23 17:03 ` Mel Gorman
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