From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S937085AbcKQL25 (ORCPT ); Thu, 17 Nov 2016 06:28:57 -0500 Received: from mo4-p00-ob.smtp.rzone.de ([81.169.146.163]:19177 "EHLO mo4-p00-ob.smtp.rzone.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932110AbcKQL2z (ORCPT ); Thu, 17 Nov 2016 06:28:55 -0500 X-RZG-AUTH: :P2EQZWCpfu+qG7CngxMFH1J+zrwiavkK6tmQaLfswM/RAW08C8KYHUlxfwrhu4f27QZY X-RZG-CLASS-ID: mo00 Date: Thu, 17 Nov 2016 12:28:44 +0100 From: Olaf Hering To: Boris Ostrovsky Cc: david.vrabel@citrix.com, jgross@suse.com, xen-devel@lists.xenproject.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2] xen/gntdev: Use mempolicy instead of VM_IO flag to avoid NUMA balancing Message-ID: <20161117112843.GA19761@aepfle.de> References: <1479318378-595-1-git-send-email-boris.ostrovsky@oracle.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="gBBFr7Ir9EOA20Yy" Content-Disposition: inline In-Reply-To: <1479318378-595-1-git-send-email-boris.ostrovsky@oracle.com> User-Agent: Mutt/1.6.2 (6759) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --gBBFr7Ir9EOA20Yy Content-Type: text/plain; charset=utf-8 Content-Disposition: inline On Wed, Nov 16, Boris Ostrovsky wrote: > Unfortunately I haven't been able to trigger NUMA balancing > so while I tested this in general I am not sure I actually > exercised the code path. Thanks for the patch! Would be nice to actually test the code path which caused the initial addition of VM_IO. I think I lack the hardware to excersise them. In my 4.4 based sources I get the following unresolved symbols. If that happens to work in mainline the failures should at least be considered during backporting of this proposed patch to the stable trees. ERROR: "__mpol_dup" [drivers/xen/xen-gntdev.ko] undefined! ERROR: "get_task_policy" [drivers/xen/xen-gntdev.ko] undefined! Appearently these symbols lack just an EXPORT_SYMBOL_GPL. Olaf --gBBFr7Ir9EOA20Yy Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iEYEARECAAYFAlgtlGgACgkQXUKg+qaYNn5V0QCeL8PHJv9dn1L2lheNhB3ck2C4 RlMAoOwNxPAtu5JWtYZ+XGUfNNv6EU1+ =QahL -----END PGP SIGNATURE----- --gBBFr7Ir9EOA20Yy--