From nobody Mon Aug 9 22:19:42 2021 X-Original-To: freebsd-hackers@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 5168811F8825 for ; Mon, 9 Aug 2021 22:19:45 +0000 (UTC) (envelope-from jwdevel@gmail.com) Received: from mail-ej1-x632.google.com (mail-ej1-x632.google.com [IPv6:2a00:1450:4864:20::632]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "smtp.gmail.com", Issuer "GTS CA 1O1" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4Gk9Vm4nQPz3s92 for ; Mon, 9 Aug 2021 22:19:44 +0000 (UTC) (envelope-from jwdevel@gmail.com) Received: by mail-ej1-x632.google.com with SMTP id d11so7239393eja.8 for ; Mon, 09 Aug 2021 15:19:44 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:in-reply-to:references:from:date:message-id:subject:to; bh=IyhQWGxEAYUvo8pT9E12N0Okvddpg7gCCoJFijXgSmg=; b=DKQqqg+P05RBjPy9sGsSHoHteMZzdLvNv5Iz5zxIqIhh0BCJ8FaTCu9wzKav5Bp5bb IyG7F0c5kOGKWegL7K5F2VT5n95SVwAYnGsJordYkh8I0VQHRMlkMnpSLsPN8mtwP1EK zCjqsu4hIZCmSPqXc1f92J+mxbSsl7TXydfsww0xRSAJTSH+xXCNylfXbaQbXpaWCCQp wzPZtlvw5FkAH/9McIsX549Pu6eIUCBCpwf36b8K9ZSVRPC7tk7FWZeI2cM3NR5kiCg+ +7Ayy9st3rzNvFJbddZCPY6djL/YjQp2O2+1tRLn9yIQoRJZLA8c9mF7WWXQf0J6j5I+ vBRw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to; bh=IyhQWGxEAYUvo8pT9E12N0Okvddpg7gCCoJFijXgSmg=; b=ZtFWsmR+U1RLNdujQ758LBEmNxeAPlRDlO97io5OQdMMjz7oM08PTzcdydoGDkiasU wIStn9l1Lj2vQi0p5YqVheQPkeAOokz9vrzN2LKoYkjM6lEuzF1LEgPJoteub8yx01+i linxx5NFZaIWY6+wOPhElf5jV1I20vTUMdm2Kejc4PPdj7h1Kek5AuKxaGCkSIVz0krq wH1bTglW4budLcpB/qE9EjNOk4ekD5+p/3D8zGtgFIT8SYyrdE6WcFA+U2u6TmplJ4LR 6U3Q/90jfbG7OIKXaLd8K912wrOxL7ryPU6VyVHqxd2CCSTN5OKdmC+8dOdGSnHJ9O0g EYgA== X-Gm-Message-State: AOAM530Jdi71YsUnyTVl1rGVfGEYh/EqZbWXl9WrAaKRhRh5d7YLCA6U XfhPf+qQdpOxuYuguf5btEQ3Wclx+6FzdrlwVyRkYpT2 X-Google-Smtp-Source: ABdhPJyw18O6el7ekz7aHjj7mJ915st+NM5GvYohISs2VwtZCx12/lKBK5t5flfzw5Ssg/FyzCwXmnzyBvTrUGXgwsw= X-Received: by 2002:a17:906:9c84:: with SMTP id fj4mr24959669ejc.356.1628547582827; Mon, 09 Aug 2021 15:19:42 -0700 (PDT) List-Id: Technical discussions relating to FreeBSD List-Archive: https://lists.freebsd.org/archives/freebsd-hackers List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-hackers@freebsd.org MIME-Version: 1.0 Received: by 2002:a17:907:704d:0:0:0:0 with HTTP; Mon, 9 Aug 2021 15:19:42 -0700 (PDT) In-Reply-To: References: From: John W Date: Mon, 9 Aug 2021 15:19:42 -0700 Message-ID: Subject: Re: Tracking down BTX behavior change. To: freebsd-hackers@freebsd.org Content-Type: text/plain; charset="UTF-8" X-Rspamd-Queue-Id: 4Gk9Vm4nQPz3s92 X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org; dkim=pass header.d=gmail.com header.s=20161025 header.b=DKQqqg+P; dmarc=pass (policy=none) header.from=gmail.com; spf=pass (mx1.freebsd.org: domain of jwdevel@gmail.com designates 2a00:1450:4864:20::632 as permitted sender) smtp.mailfrom=jwdevel@gmail.com X-Spamd-Result: default: False [-2.00 / 15.00]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; R_DKIM_ALLOW(-0.20)[gmail.com:s=20161025]; FROM_HAS_DN(0.00)[]; R_SPF_ALLOW(-0.20)[+ip6:2a00:1450:4000::/36:c]; FREEMAIL_FROM(0.00)[gmail.com]; MIME_GOOD(-0.10)[text/plain]; PREVIOUSLY_DELIVERED(0.00)[freebsd-hackers@freebsd.org]; TO_DN_NONE(0.00)[]; RCPT_COUNT_ONE(0.00)[1]; NEURAL_HAM_LONG(-1.00)[-1.000]; MID_RHS_MATCH_FROMTLD(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; DKIM_TRACE(0.00)[gmail.com:+]; DMARC_POLICY_ALLOW(-0.50)[gmail.com,none]; RCVD_IN_DNSWL_NONE(0.00)[2a00:1450:4864:20::632:from]; NEURAL_SPAM_SHORT(1.00)[1.000]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+]; FREEMAIL_ENVFROM(0.00)[gmail.com]; ASN(0.00)[asn:15169, ipnet:2a00:1450::/32, country:US]; RCVD_COUNT_TWO(0.00)[2]; RCVD_TLS_ALL(0.00)[]; DWL_DNSWL_NONE(0.00)[gmail.com:dkim] X-ThisMailContainsUnwantedMimeParts: N Ah, forgot the bug link: [1] https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=257722 On 8/9/21, John W wrote: > I have a problem on my system where 11.3 boots fine, but any supported > release (11.4, 12.2, 13.0) fail during the BTX stage. There's a bug > report if you're interested[1] > > But my question is: how can I track down differences in BTX code? I > have the 11.3 and 11.4 SVN sources checked out, and so far I am not > able to find any differences. > > So far, I am looking in: src/stand/i386/btx/ and src/usr.sbin/btxld > > I am on amd64, and I do not see any /amd64/ directory, so I am just > guessing that /i386/ is what I want. > > Also: given that the 11.3 boot code works fine, I wonder: what are the > ramifications of using it on an 11.4 system? > > I am not really experienced with the boot loader process, so am not > sure what the dangers involved are. > Certainly, I am able to boot in to the new (11.4) kernel with the old > userland installed. But my woes happened when I did 'make > installworld', which presumably updated the boot code. > > Would it be reasonable to manually roll back the boot code to 11.3, > but keep the 11.4 userland? Again, I'm really not sure the > ramifications, just trying to make my system usable again. > > Thanks > -John >