From nobody Fri May 12 14:05:37 2023 X-Original-To: current@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4QHrBy6PByz4B3fg for ; Fri, 12 May 2023 14:05:46 +0000 (UTC) (envelope-from freebsd-rwg@gndrsh.dnsmgr.net) Received: from gndrsh.dnsmgr.net (br1.CN84in.dnsmgr.net [69.59.192.140]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 4QHrBy1VDyz412r for ; Fri, 12 May 2023 14:05:45 +0000 (UTC) (envelope-from freebsd-rwg@gndrsh.dnsmgr.net) Authentication-Results: mx1.freebsd.org; none Received: from gndrsh.dnsmgr.net (localhost [127.0.0.1]) by gndrsh.dnsmgr.net (8.13.3/8.13.3) with ESMTP id 34CE5cwM063531; Fri, 12 May 2023 07:05:38 -0700 (PDT) (envelope-from freebsd-rwg@gndrsh.dnsmgr.net) Received: (from freebsd-rwg@localhost) by gndrsh.dnsmgr.net (8.13.3/8.13.3/Submit) id 34CE5bUi063530; Fri, 12 May 2023 07:05:37 -0700 (PDT) (envelope-from freebsd-rwg) From: "Rodney W. Grimes" Message-Id: <202305121405.34CE5bUi063530@gndrsh.dnsmgr.net> Subject: Re: git: c16e08e5f324 - main - stand/efi: Retire i386 support In-Reply-To: <20230512070134.eb633400d68cf7c0813d7fde@dec.sakura.ne.jp> To: Tomoaki AOKI Date: Fri, 12 May 2023 07:05:37 -0700 (PDT) CC: current@FreeBSD.org X-Mailer: ELM [version 2.4ME+ PL121h (25)] List-Id: Discussions about the use of FreeBSD-current List-Archive: https://lists.freebsd.org/archives/freebsd-current List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-current@freebsd.org MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=US-ASCII X-Rspamd-Queue-Id: 4QHrBy1VDyz412r X-Spamd-Bar: ---- X-Spamd-Result: default: False [-4.00 / 15.00]; REPLY(-4.00)[]; ASN(0.00)[asn:13868, ipnet:69.59.192.0/19, country:US] X-Rspamd-Pre-Result: action=no action; module=replies; Message is reply to one we originated X-ThisMailContainsUnwantedMimeParts: N > On Thu, 11 May 2023 23:08:30 +0200 > Yuri wrote: > > > Warner Losh wrote: > > > > > > > > > On Thu, May 11, 2023, 2:50 PM Rodney W. Grimes > > > > > > > wrote: > > > > > > > On Thu, May 11, 2023, 2:16 PM Yuri > > > wrote: > > > > > > > > > Warner Losh wrote: > > > > > > The branch main has been updated by imp: > > > > > > > > > > > > URL: > > > > > > > > https://cgit.FreeBSD.org/src/commit/?id=c16e08e5f324aa119c85e10eaabacbd2abdb40e0 > > > > > > > > > > > > commit c16e08e5f324aa119c85e10eaabacbd2abdb40e0 > > > > > > Author:? ? ?Warner Losh > > > > > > AuthorDate: 2023-05-11 20:04:12 +0000 > > > > > > Commit:? ? ?Warner Losh > > > > > > CommitDate: 2023-05-11 20:06:03 +0000 > > > > > > > > > > > >? ? ?stand/efi: Retire i386 support > > > > > > > > > > > >? ? ?Remove the i386 ifdefs and files. It never worked. > > > > > > > > > > > >? ? ?Sponsored by:? ? ? ? ? ?Netflix > > > > > >? ? ?Reviewed by:? ? ? ? ? ? manu, tsoome, kevans > > > > > >? ? ?Differential Revision:? https://reviews.freebsd.org/D40012 > > > > > > > > > > > > > As this question seems to be asked a lot on the forums, does > > > this mean > > > > > we will never support the 32bit efi booting 64bit OS? > > > > > > > > > > > > > Yes. It means we've given up on that. Such environments are rare these > > > > days, as far as I know, so unless someone shows up with something that > > > > works perfectly with a qemu testing recipe that we can roll it > > > into out > > > > test bed. Plus some kind of info on real hardware that does this > > > that's > > > > popular enough to justify inclusion. > > > > > > I have only ever seen 1 implementation of x86 32bit efi, and it was > > > such a pile of turds I just scrapped the machine. > > > > > > > > > That was my experience as well, so I biased my action towards just > > > removing it. If it turns out my experience was somehow atypical and > > > these are popular and very much robust, I'm open to learning about it. > > > > I just noticed that it was asked several times in the last few months > > trying to use FreeBSD on not-so-modern and rather exotic hardware; I > > don't think we really need that support, but I simply wasn't aware of > > efi32 status before this commit, hence I asked :) > > Just a FYI. > > A subscriber (not me) tried ASUS EeeBook X205TA (manufactured "2015-04") > through Mar.18, 2021 to Apr.13, 2021 without luck on freebsd-usrs-jp ML > (in Japanese, started from [1], [2] for April). > > Atom CPU Z3735F @1.33GHz, 2GB RAM That is a 4 core 64 bit CPU, it most likely has a 64bit efi implementation. > Shipped with "Windows 8.1 with Bing (32bit)" installed. Probably a good choice to use a 32 bit OS on a machine with only 2GB as there is no need for a 64 bit pointer. This pretty much applies to any machine with 4GB or less of memory > > [1] > https://lists.freebsd.org/pipermail/freebsd-users-jp/2021-March/001728.html > > [2] > https://lists.freebsd.org/pipermail/freebsd-users-jp/2021-April/001746.html > > > -- > Tomoaki AOKI] > > -- Rod Grimes rgrimes@freebsd.org