From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S265063AbTLZJWz (ORCPT ); Fri, 26 Dec 2003 04:22:55 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S265144AbTLZJWz (ORCPT ); Fri, 26 Dec 2003 04:22:55 -0500 Received: from node-d-1fcf.a2000.nl ([62.195.31.207]:43648 "EHLO laptop.fenrus.com") by vger.kernel.org with ESMTP id S265063AbTLZJWx (ORCPT ); Fri, 26 Dec 2003 04:22:53 -0500 Subject: Re: Page aging broken in 2.6 From: Arjan van de Ven Reply-To: arjanv@redhat.com To: Andrew Morton Cc: Benjamin Herrenschmidt , linux-kernel@vger.kernel.org, riel@surriel.com In-Reply-To: <20031225234023.20396cbc.akpm@osdl.org> References: <1072423739.15458.62.camel@gaston> <20031225234023.20396cbc.akpm@osdl.org> Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="=-WFhY2CBHumPBK4toubMJ" Organization: Red Hat, Inc. Message-Id: <1072430500.5222.2.camel@laptop.fenrus.com> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.5 (1.4.5-7) Date: Fri, 26 Dec 2003 10:21:40 +0100 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org --=-WFhY2CBHumPBK4toubMJ Content-Type: text/plain Content-Transfer-Encoding: quoted-printable > > And we never flush the TLB entry.=20 > >=20 > > I don't know if x86 (or other archs really using page tables) will > > actually set the referenced bit again in the PTE if it's already set > > in the TLB, if not, then x86 needs a flush too. >=20 > x86 needs a flush_tlb_page(), yes. it does? Are you 100% sure ? Afaik x86 is very very slow in setting the A and D bits (like 2000 to 3000 cycles) *because* it doesn't need a TLB flush.... --=-WFhY2CBHumPBK4toubMJ Content-Type: application/pgp-signature; name=signature.asc Content-Description: This is a digitally signed message part -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.3 (GNU/Linux) iD8DBQA/6/2kxULwo51rQBIRAiWnAJ4/K1GSl2QXV443FbHTFEQAeG09WACgkqTj 4wyRLgeq+JS9N1qIZAErWPM= =jZ22 -----END PGP SIGNATURE----- --=-WFhY2CBHumPBK4toubMJ--