From owner-freebsd-current@freebsd.org Mon Apr 20 06:59:14 2020 Return-Path: Delivered-To: freebsd-current@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 11C492B8CD5 for ; Mon, 20 Apr 2020 06:59:14 +0000 (UTC) (envelope-from kostikbel@gmail.com) Received: from mailman.nyi.freebsd.org (unknown [127.0.1.3]) by mx1.freebsd.org (Postfix) with ESMTP id 495HcK5n3fz3HZZ for ; Mon, 20 Apr 2020 06:59:13 +0000 (UTC) (envelope-from kostikbel@gmail.com) Received: by mailman.nyi.freebsd.org (Postfix) id C490B2B8CD4; Mon, 20 Apr 2020 06:59:13 +0000 (UTC) Delivered-To: current@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id C450C2B8CD3 for ; Mon, 20 Apr 2020 06:59:13 +0000 (UTC) (envelope-from kostikbel@gmail.com) Received: from kib.kiev.ua (kib.kiev.ua [IPv6:2001:470:d5e7:1::1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 495HcJ5N1xz3HZX for ; Mon, 20 Apr 2020 06:59:12 +0000 (UTC) (envelope-from kostikbel@gmail.com) Received: from tom.home (kib@localhost [127.0.0.1]) by kib.kiev.ua (8.15.2/8.15.2) with ESMTPS id 03K6wv9R023393 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NO); Mon, 20 Apr 2020 09:59:00 +0300 (EEST) (envelope-from kostikbel@gmail.com) DKIM-Filter: OpenDKIM Filter v2.10.3 kib.kiev.ua 03K6wv9R023393 Received: (from kostik@localhost) by tom.home (8.15.2/8.15.2/Submit) id 03K6wuha023391; Mon, 20 Apr 2020 09:58:56 +0300 (EEST) (envelope-from kostikbel@gmail.com) X-Authentication-Warning: tom.home: kostik set sender to kostikbel@gmail.com using -f Date: Mon, 20 Apr 2020 09:58:56 +0300 From: Konstantin Belousov To: Yoshihiro Ota Cc: current@freebsd.org Subject: Re: PAE on i386 Message-ID: <20200420065856.GS2655@kib.kiev.ua> References: <20190120111854.GF26174@kib.kiev.ua> <20200419234006.484caaf288ce9025f39cce39@j.email.ne.jp> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200419234006.484caaf288ce9025f39cce39@j.email.ne.jp> X-Spam-Status: No, score=-1.0 required=5.0 tests=ALL_TRUSTED,BAYES_00, DKIM_ADSP_CUSTOM_MED,FORGED_GMAIL_RCVD,FREEMAIL_FROM, NML_ADSP_CUSTOM_MED autolearn=no autolearn_force=no version=3.4.4 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on tom.home X-Rspamd-Queue-Id: 495HcJ5N1xz3HZX X-Spamd-Bar: - Authentication-Results: mx1.freebsd.org; dkim=none; dmarc=fail reason="No valid SPF, No valid DKIM" header.from=gmail.com (policy=none); spf=softfail (mx1.freebsd.org: 2001:470:d5e7:1::1 is neither permitted nor denied by domain of kostikbel@gmail.com) smtp.mailfrom=kostikbel@gmail.com X-Spamd-Result: default: False [-2.00 / 15.00]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-1.00)[-1.000,0]; RCVD_TLS_ALL(0.00)[]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; FREEMAIL_FROM(0.00)[gmail.com]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; MIME_GOOD(-0.10)[text/plain]; HAS_XAW(0.00)[]; R_SPF_SOFTFAIL(0.00)[~all:c]; IP_SCORE_FREEMAIL(0.00)[]; TO_MATCH_ENVRCPT_SOME(0.00)[]; RCPT_COUNT_TWO(0.00)[2]; IP_SCORE(0.00)[ip: (-2.98), ipnet: 2001:470::/32(-4.65), asn: 6939(-3.60), country: US(-0.05)]; FROM_EQ_ENVFROM(0.00)[]; R_DKIM_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; ASN(0.00)[asn:6939, ipnet:2001:470::/32, country:US]; RCVD_COUNT_TWO(0.00)[2]; FREEMAIL_ENVFROM(0.00)[gmail.com]; DMARC_POLICY_SOFTFAIL(0.10)[gmail.com : No valid SPF, No valid DKIM,none] X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.29 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 Apr 2020 06:59:14 -0000 On Sun, Apr 19, 2020 at 11:40:06PM -0400, Yoshihiro Ota wrote: > Hi, > > I recall this result was committed a while ago to 13-CURRENT: > https://svnweb.freebsd.org/base?view=revision&revision=343567 > > Is there a plan to MFC to 12-STABLE? There are no plans to merge it to 12. The feature is too invasive. > Does this feature results changing ABI? I do not believe so. One thing that changes is the UVA layout, but this is exactly the reason why this feature exists. On the other hand, the patch does change KBI by expanding vm_paddr_t to 64bit unconditionally. > > Regards, > Hiro > > On Sun, 20 Jan 2019 13:18:54 +0200 > Konstantin Belousov wrote: > > > Hello, > > at https://reviews.freebsd.org/D18894 I put a review which main goal is > > to allow i386 kernels to use NX bits on capable hardware. In essence, > > single kernel now can operate using either PAE or non-PAE pagetables, > > the selection is done at the cold (very early boot, before paging is > > turned on) time. > > > > This together with earlier 4/4 work gives much more life into i386 kernels > > for whoever still needs them. Please review/test, see the differential > > review text for more explanation. > > _______________________________________________ > > freebsd-current@freebsd.org mailing list > > https://lists.freebsd.org/mailman/listinfo/freebsd-current > > To unsubscribe, send any mail to "freebsd-current-unsubscribe@freebsd.org"