From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S964955Ab2JWW61 (ORCPT ); Tue, 23 Oct 2012 18:58:27 -0400 Received: from lennier.cc.vt.edu ([198.82.162.213]:41947 "EHLO lennier.cc.vt.edu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757462Ab2JWW60 (ORCPT ); Tue, 23 Oct 2012 18:58:26 -0400 X-Mailer: exmh version 2.8.0 04/21/2012 with nmh-1.4-dev To: Andi Kleen Cc: "Michael Kerrisk (man-pages)" , Andi Kleen , akpm@linux-foundation.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Hillf Danton Subject: Re: [PATCH] MM: Support more pagesizes for MAP_HUGETLB/SHM_HUGETLB v6 In-Reply-To: Your message of "Mon, 22 Oct 2012 08:36:33 -0700." <20121022153633.GK2095@tassilo.jf.intel.com> From: Valdis.Kletnieks@vt.edu References: <1350665289-7288-1-git-send-email-andi@firstfloor.org> <20121022132733.GQ16230@one.firstfloor.org> <20121022133534.GR16230@one.firstfloor.org> <20121022153633.GK2095@tassilo.jf.intel.com> Mime-Version: 1.0 Content-Type: multipart/signed; boundary="==_Exmh_1351033000_2138P"; micalg=pgp-sha1; protocol="application/pgp-signature" Content-Transfer-Encoding: 7bit Date: Tue, 23 Oct 2012 18:56:40 -0400 Message-ID: <79194.1351033000@turing-police.cc.vt.edu> X-Mirapoint-Received-SPF: 198.82.161.152 auth3.smtp.vt.edu Valdis.Kletnieks@vt.edu 2 pass X-Junkmail-Status: score=10/50, host=steiner.cc.vt.edu X-Junkmail-Signature-Raw: score=unknown, refid=str=0001.0A020207.508720AB.0007,ss=1,re=0.000,fgs=0, ip=0.0.0.0, so=2011-07-25 19:15:43, dmn=2011-05-27 18:58:46, mode=single engine X-Junkmail-IWF: false Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --==_Exmh_1351033000_2138P Content-Type: text/plain; charset=us-ascii On Mon, 22 Oct 2012 08:36:33 -0700, Andi Kleen said: > Thinking about it more PowerPC has a 16GB page, so we probably > need to move this to prot. Gaak - is that a typo? If not, what is the use case - allowing a small number of pages to cover all memory, with big wins on TLB hit ratios? I certainly can't see it as a sane primitive for a virtual memory design that does paging/swapping? --==_Exmh_1351033000_2138P Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) Comment: Exmh version 2.5 07/13/2001 iQIVAwUBUIcgqAdmEQWDXROgAQKGzw//QTyQq0JUUKzodJC7HovRCqtPHWi2CuuX 9O57hcMs9vT3OkgwaVesgcQy39Ro2ImnPlLCNlJXaemCDfdpZglY/XkCo3L9bmVG OULdsCRUzl1/0F/7oXqRbccuHk+G5ck0jc80uUxgZYFH6Das83R00VVGv4xVdy3h nFOgNdEC4FemnMtnMqVACA5s2t7t8Pdn/jbM7z3atSfFGG/J6Pa9/+HvLQtag+rs Xl+xF1wNfwDxUEixjoooO9fWRDMm2j7P/Ushbdzh/3+soV+Y2ZCzTvDMmH9uDRSx /8sXkhk8fH4ZdWPkXacMUYCKIEcx9lp1bhNyElJmtrsB4Z+UEEL70jyfdZm5bkYD 3c6ZnrpLAX+oJWWD+mdGK/NqKUOu8JGOJ1/eoObH7Jj7dHeO6QDRld/I+whbD+YN 4jDMU3xgYi9Rs0qCdOyYSntzsn7wMgBXhd1zXX7FVP7ighvOpOQu7Iy9Nij26+22 I+jN/6Kt2fhD3uzWTT3+Ocj7JR/7ACXTM+lLZXCk0N88TQbAwDxehyZ0ayzKXqzV GE0Ivdq0Mlfj9YoIn1eLiWr7yKT2kwkPJQoNrrJcJ/PumQWZxSv+eZy9bswtP39I oTGESX5u+jtSYOOA2mqmI1dQBndgKsJyUJIqHInKM2ct07s6Tq2uzzYJ7DbuXNlN yPNhVeQmm/s= =HKHw -----END PGP SIGNATURE----- --==_Exmh_1351033000_2138P--