From owner-freebsd-current@freebsd.org Sat Mar 31 23:06:02 2018 Return-Path: Delivered-To: freebsd-current@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 0FF12F63B79 for ; Sat, 31 Mar 2018 23:06:02 +0000 (UTC) (envelope-from dim@FreeBSD.org) Received: from mailman.ysv.freebsd.org (mailman.ysv.freebsd.org [IPv6:2001:1900:2254:206a::50:5]) by mx1.freebsd.org (Postfix) with ESMTP id 9F8CB7B34D for ; Sat, 31 Mar 2018 23:06:01 +0000 (UTC) (envelope-from dim@FreeBSD.org) Received: by mailman.ysv.freebsd.org (Postfix) id 5D756F63B76; Sat, 31 Mar 2018 23:06:01 +0000 (UTC) Delivered-To: current@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 4A9AAF63B74; Sat, 31 Mar 2018 23:06:01 +0000 (UTC) (envelope-from dim@FreeBSD.org) Received: from tensor.andric.com (tensor.andric.com [87.251.56.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "tensor.andric.com", Issuer "COMODO RSA Domain Validation Secure Server CA" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 6A6C87B34B; Sat, 31 Mar 2018 23:06:00 +0000 (UTC) (envelope-from dim@FreeBSD.org) Received: from coleburn.home.andric.com (coleburn.home.andric.com [192.168.0.15]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by tensor.andric.com (Postfix) with ESMTPSA id 1A99636A4E; Sun, 1 Apr 2018 01:05:58 +0200 (CEST) From: Dimitry Andric Message-Id: <3FAD36FD-FA90-49F6-9141-B9CCCCA2BF00@FreeBSD.org> Content-Type: multipart/signed; boundary="Apple-Mail=_FEF4CFF3-A8E3-4C92-9CB5-9B04D7FD34B3"; protocol="application/pgp-signature"; micalg=pgp-sha1 Mime-Version: 1.0 (Mac OS X Mail 10.3 \(3273\)) Subject: Re: i386 4/4 change Date: Sun, 1 Apr 2018 01:05:57 +0200 In-Reply-To: <20180401004833.L3296@besplex.bde.org> Cc: Konstantin Belousov , current@freebsd.org, amd64@freebsd.org, bde@freebsd.org To: Bruce Evans References: <20180331102901.GN1774@kib.kiev.ua> <20180401004833.L3296@besplex.bde.org> X-Mailer: Apple Mail (2.3273) X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.25 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: Sat, 31 Mar 2018 23:06:02 -0000 --Apple-Mail=_FEF4CFF3-A8E3-4C92-9CB5-9B04D7FD34B3 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=us-ascii On 31 Mar 2018, at 17:57, Bruce Evans wrote: > > On Sat, 31 Mar 2018, Konstantin Belousov wrote: > >> the change to provide full 4G of address space for both kernel and >> user on i386 is ready to land. The motivation for the work was to both >> mitigate Meltdown on i386, and to give more breazing space for still >> used 32bit architecture. The patch was tested by Peter Holm, and I am >> satisfied with the code. >> >> If you use i386 with HEAD, I recommend you to apply the patch from >> https://reviews.freebsd.org/D14633 >> and report any regressions before the commit, not after. Unless >> a significant issue is reported, I plan to commit the change somewhere >> at Wed/Thu next week. >> >> Also I welcome patch comments and reviews. > > It crashes at boot time in getmemsize() unless booted with loader which > I don't want to use. For me, it at least compiles and boots OK, but I'm one of those crazy people who use the default boot loader. ;) I haven't yet run any performance tests, I'll try building world and a few large ports tomorrow. General operation from the command line does not feel "sluggish" in any way, however. -Dimitry --Apple-Mail=_FEF4CFF3-A8E3-4C92-9CB5-9B04D7FD34B3 Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename=signature.asc Content-Type: application/pgp-signature; name=signature.asc Content-Description: Message signed with OpenPGP -----BEGIN PGP SIGNATURE----- Version: GnuPG/MacGPG2 v2.2 iF0EARECAB0WIQR6tGLSzjX8bUI5T82wXqMKLiCWowUCWsAUVQAKCRCwXqMKLiCW o98sAKCDkLWdzL8NVaBN8mYfJAtBViO+lgCg/53fGIcQd2gJ7rA6b/pxf8X50K4= =P8fD -----END PGP SIGNATURE----- --Apple-Mail=_FEF4CFF3-A8E3-4C92-9CB5-9B04D7FD34B3--