From owner-freebsd-current@FreeBSD.ORG Mon Sep 20 21:53:23 2004 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id D999A16A4CF for ; Mon, 20 Sep 2004 21:53:23 +0000 (GMT) Received: from mail6.speakeasy.net (mail6.speakeasy.net [216.254.0.206]) by mx1.FreeBSD.org (Postfix) with ESMTP id A133F43D1F for ; Mon, 20 Sep 2004 21:53:23 +0000 (GMT) (envelope-from jhb@FreeBSD.org) Received: (qmail 12767 invoked from network); 20 Sep 2004 21:53:23 -0000 Received: from dsl027-160-063.atl1.dsl.speakeasy.net (HELO server.baldwin.cx) ([216.27.160.63]) (envelope-sender ) encrypted SMTP for ; 20 Sep 2004 21:53:23 -0000 Received: from [10.50.40.210] (gw1.twc.weather.com [216.133.140.1]) (authenticated bits=0) by server.baldwin.cx (8.12.11/8.12.11) with ESMTP id i8KLrEqa026257; Mon, 20 Sep 2004 17:53:19 -0400 (EDT) (envelope-from jhb@FreeBSD.org) From: John Baldwin To: Nate Lawson Date: Mon, 20 Sep 2004 17:48:23 -0400 User-Agent: KMail/1.6.2 References: <41421D6A.8070805@cronyx.ru> <200409201652.24457.jhb@FreeBSD.org> <414F4CF2.2050404@root.org> In-Reply-To: <414F4CF2.2050404@root.org> MIME-Version: 1.0 Content-Disposition: inline Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Message-Id: <200409201748.23097.jhb@FreeBSD.org> X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on server.baldwin.cx cc: FreeBSD Current cc: Roman Kurakin Subject: Re: mp_machdep.c (was Re: [Fwd: Re: Bug reports requested - acpi]) X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 20 Sep 2004 21:53:24 -0000 On Monday 20 September 2004 05:34 pm, Nate Lawson wrote: > John Baldwin wrote: > > It's probably cleaner to use pmap_invalidate_range(). Something like: > > > > Index: mp_machdep.c > > =================================================================== > > RCS file: /usr/cvs/src/sys/i386/i386/mp_machdep.c,v > > retrieving revision 1.238 > > diff -u -r1.238 mp_machdep.c > > --- mp_machdep.c 1 Sep 2004 06:42:01 -0000 1.238 > > +++ mp_machdep.c 20 Sep 2004 20:50:35 -0000 > > @@ -738,15 +738,19 @@ > > int x; > > int size = *(int *) ((u_long) & bootMP_size); > > u_char *src = (u_char *) ((u_long) bootMP); > > - u_char *dst = (u_char *) boot_address + KERNBASE; > > + u_char *dst; > > u_int boot_base = (u_int) bootMP; > > u_int8_t *dst8; > > u_int16_t *dst16; > > u_int32_t *dst32; > > + vm_offset_t va; > > > > POSTCODE(INSTALL_AP_TRAMP_POST); > > > > - pmap_kenter(boot_address + KERNBASE, boot_address); > > + va = boot_address + KERNBASE; > > + pmap_kenter(va, boot_address); > > + pmap_invalidate_range(kernel_pmap, va, va + size); > > + dst = (u_char *)va; > > for (x = 0; x < size; ++x) > > *dst++ = *src++; > > > > It seems odd that this is needed though. Does it go away if you use > > DISABLE_PSE or DISABLE_PGE? > > He's on a Pentium 2 or something. PSE was introduced on the original Pentium and even on some 486's (I had a 486dx4/100 that had PSE). PGE is present on Pentium II's as well I think. -- John Baldwin <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve" = http://www.FreeBSD.org