From owner-freebsd-stable@freebsd.org Mon Aug 31 18:00:42 2020 Return-Path: Delivered-To: freebsd-stable@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 E96A33C85E2 for ; Mon, 31 Aug 2020 18:00:42 +0000 (UTC) (envelope-from freebsd-stable@lists.invis.net) Received: from mail.invis.net (mail.invis.net [5.152.219.147]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 4BgJ0B0VCvz3bqk for ; Mon, 31 Aug 2020 18:00:41 +0000 (UTC) (envelope-from freebsd-stable@lists.invis.net) Received: (qmail 91019 invoked by uid 89); 31 Aug 2020 18:00:34 -0000 Received: from unknown (HELO xenon.internal.invis.net) (no-reply@invis.net@84.9.150.199) by smtp.mail.cassiterite.invis.net with SMTP; 31 Aug 2020 18:00:34 -0000 To: freebsd-stable@freebsd.org From: Charles Lecklider Subject: Cannot find announcement that min supported i386 CPU is now i686 Autocrypt: addr=lists@invis.net; 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FreeBSD amd64; rv:68.0) Gecko/20100101 Thunderbird/68.11.0 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Language: en-GB Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 4BgJ0B0VCvz3bqk X-Spamd-Bar: +++ X-Spamd-Result: default: False [3.05 / 15.00]; MID_RHS_MATCH_FROM(0.00)[]; ARC_NA(0.00)[]; FROM_HAS_DN(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; NEURAL_SPAM_SHORT(0.30)[0.301]; MIME_GOOD(-0.10)[text/plain]; TO_DN_NONE(0.00)[]; NEURAL_SPAM_MEDIUM(0.10)[0.098]; RCPT_COUNT_ONE(0.00)[1]; NEURAL_SPAM_LONG(0.75)[0.753]; R_SPF_NA(0.00)[no SPF record]; DMARC_POLICY_REJECT(2.00)[lists.invis.net : No valid SPF, No valid DKIM,reject]; FROM_EQ_ENVFROM(0.00)[]; RCVD_TLS_LAST(0.00)[]; R_DKIM_NA(0.00)[]; ASN(0.00)[asn:20860, ipnet:5.152.192.0/19, country:GB]; MIME_TRACE(0.00)[0:+]; MAILMAN_DEST(0.00)[freebsd-stable]; RCVD_COUNT_TWO(0.00)[2] X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.33 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 31 Aug 2020 18:00:43 -0000 Having just trashed my dual Pentium 233 MMX by installing 11.4 I went digging to find the cause - and I found it. As you can see from objdump below, clearly a decision was made that 11.4 would no longer support anything before a i686. Ignoring for a moment the wisdom of making breaking changes to a minor version, please could someone tell me where the announcement was made? Thanks! ~/ISO/FreeBSD-11.3/bin $ objdump -d -f ls | grep cmov ~/ISO/FreeBSD-11.3/bin $ ~/ISO/FreeBSD-11.4/bin $ objdump -d -f ls | grep cmov 804974c: 0f 48 c6 cmovs %esi,%eax 8049765: 0f 48 c6 cmovs %esi,%eax 80497a3: 0f 48 c6 cmovs %esi,%eax 80497b5: 0f 48 c6 cmovs %esi,%eax 8049807: 0f 48 ce cmovs %esi,%ecx 8049818: 0f 49 f0 cmovns %eax,%esi 804a303: 0f 45 d9 cmovne %ecx,%ebx 804a30d: 0f 45 d9 cmovne %ecx,%ebx 804a318: 0f 45 d9 cmovne %ecx,%ebx 804a366: 0f 44 cb cmove %ebx,%ecx 804a3a5: 0f 49 c8 cmovns %eax,%ecx 804a3da: 0f 45 cb cmovne %ebx,%ecx 804a41d: 0f 45 cb cmovne %ebx,%ecx 804a451: 0f 44 c8 cmove %eax,%ecx 804a48b: 0f 45 c1 cmovne %ecx,%eax 804a50d: 0f 44 c8 cmove %eax,%ecx 804a55d: 0f 45 f0 cmovne %eax,%esi 804a567: 0f 45 f0 cmovne %eax,%esi 804af65: 0f 44 c8 cmove %eax,%ecx 804ba4c: 0f 44 c1 cmove %ecx,%eax 804bd24: 0f 44 f8 cmove %eax,%edi 804be33: 0f 44 d1 cmove %ecx,%edx 804be3e: 0f 45 d1 cmovne %ecx,%edx 804c2dd: 0f 44 c8 cmove %eax,%ecx 804c444: 0f 44 d8 cmove %eax,%ebx 804c4b8: 0f 44 5d e4 cmove -0x1c(%ebp),%ebx 804c505: 0f 44 c1 cmove %ecx,%eax 804c573: 0f 45 c8 cmovne %eax,%ecx 804c5c7: 0f 47 d1 cmova %ecx,%edx 804c5d0: 0f 47 c8 cmova %eax,%ecx 804c6a0: 0f 44 d1 cmove %ecx,%edx 804c6a5: 0f 45 d3 cmovne %ebx,%edx 804c749: 0f 44 d7 cmove %edi,%edx 804c74e: 0f 45 d1 cmovne %ecx,%edx 804c7a4: 0f 44 f8 cmove %eax,%edi 804ca2d: 0f 44 d1 cmove %ecx,%edx 804ca32: 0f 45 d7 cmovne %edi,%edx 804cb93: 0f 44 d6 cmove %esi,%edx 804cb9e: 0f 45 d1 cmovne %ecx,%edx 804cd0c: 0f 44 ca cmove %edx,%ecx 804cd11: 0f 45 c8 cmovne %eax,%ecx