Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761634AbYG1VYU (ORCPT ); Mon, 28 Jul 2008 17:24:20 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754676AbYG1VYE (ORCPT ); Mon, 28 Jul 2008 17:24:04 -0400 Received: from e1.ny.us.ibm.com ([32.97.182.141]:43144 "EHLO e1.ny.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753780AbYG1VYC (ORCPT ); Mon, 28 Jul 2008 17:24:02 -0400 Date: Mon, 28 Jul 2008 14:23:54 -0700 From: Eric B Munson To: Dave Hansen Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, linuxppc-dev@ozlabs.org, libhugetlbfs-devel@lists.sourceforge.net Subject: Re: [RFC] [PATCH 0/5 V2] Huge page backed user-space stacks Message-ID: <20080728212354.GB8450@us.ibm.com> References: <1217277204.23502.36.camel@nimitz> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="wq9mPyueHGvFACwf" Content-Disposition: inline In-Reply-To: <1217277204.23502.36.camel@nimitz> User-Agent: Mutt/1.5.17+20080114 (2008-01-14) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1411 Lines: 49 --wq9mPyueHGvFACwf Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Mon, 28 Jul 2008, Dave Hansen wrote: > On Mon, 2008-07-28 at 12:17 -0700, Eric Munson wrote: > >=20 > > This patch stack introduces a personality flag that indicates the > > kernel > > should setup the stack as a hugetlbfs-backed region. A userspace > > utility > > may set this flag then exec a process whose stack is to be backed by > > hugetlb pages. >=20 > I didn't see it mentioned here, but these stacks are fixed-size, right? > They can't actually grow and are fixed in size at exec() time, right? >=20 > -- Dave The stack VMA is a fixed size but the pages will be faulted in as needed. --=20 Eric B Munson IBM Linux Technology Center ebmunson@us.ibm.com --wq9mPyueHGvFACwf Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) iD8DBQFIjjjqsnv9E83jkzoRAugvAKD36x3OyfiN/GtGM+x0LJ6SL7e7TgCdHOOf OGGM1jiwgdCWkwRUj/Gd/Fg= =5CJt -----END PGP SIGNATURE----- --wq9mPyueHGvFACwf-- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/