From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,HTML_MESSAGE,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 91E4BC433DB for ; Tue, 9 Feb 2021 14:44:44 +0000 (UTC) Received: from shelob.surriel.com (shelob.surriel.com [96.67.55.147]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id CC44464E9C for ; Tue, 9 Feb 2021 14:44:43 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CC44464E9C Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=columbia.edu Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kernelnewbies-bounces@kernelnewbies.org Received: from localhost ([::1] helo=shelob.surriel.com) by shelob.surriel.com with esmtp (Exim 4.94) (envelope-from ) id 1l9UFY-000238-Er; Tue, 09 Feb 2021 09:44:20 -0500 Received: from mx0a-00364e01.pphosted.com ([148.163.135.74]) by shelob.surriel.com with esmtps (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94) (envelope-from ) id 1l9UFW-000233-Hy for kernelnewbies@kernelnewbies.org; Tue, 09 Feb 2021 09:44:18 -0500 Received: from pps.filterd (m0167071.ppops.net [127.0.0.1]) by mx0a-00364e01.pphosted.com (8.16.0.43/8.16.0.43) with SMTP id 119Ei9K4030703 for ; Tue, 9 Feb 2021 09:44:16 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=columbia.edu; h=mime-version : references : in-reply-to : from : date : message-id : subject : to : cc : content-type; s=pps01; bh=cFRysoGvUcs9JiBsw57V+saP/M/QLEgun6gLM4ewahU=; b=mViTWqNimraO38Ov67g38OWQySHEf/KDxS4oOx/b4yxROBn54uup8COHoCv88nzFK2PL Z++GSSuGLfui5xPui1vtnxXypN++mYBK0LDgbapb3+Gz7cEUejRAWOBpiAj8+qtE77bX 7sc/hF3GJB1tL4xvoqx9+AciddVbMTbybrkax8PiaQLwiuvBuvFpfJNewbGQ8NSTWaOc JRepwEYwR/thAfiJLr01d7Rh2tfGaKBAuPf8DJJeAaftP7cURJst60x1bjpnHc7TVEga xYN4nQz7TK0nAoTFqGv1A5/G81x5rQlSS80iY5zCRjgRRKO84zrYBhY3210bxXI9Hyh9 LQ== Received: from sendprodmail10.cc.columbia.edu (sendprodmail10.cc.columbia.edu [128.59.72.18]) by mx0a-00364e01.pphosted.com with ESMTP id 36hrxt84xw-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT) for ; Tue, 09 Feb 2021 09:44:15 -0500 Received: from mail-ua1-f69.google.com (mail-ua1-f69.google.com [209.85.222.69]) by sendprodmail10.cc.columbia.edu (8.14.4/8.14.4) with ESMTP id 119EiEWl006760 (version=TLSv1/SSLv3 cipher=AES128-GCM-SHA256 bits=128 verify=NOT) for ; Tue, 9 Feb 2021 09:44:14 -0500 Received: by mail-ua1-f69.google.com with SMTP id l1so4553539uan.8 for ; Tue, 09 Feb 2021 06:44:14 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=cFRysoGvUcs9JiBsw57V+saP/M/QLEgun6gLM4ewahU=; b=C/HVqJrIWmXNFTGbq5EMM7Gfc79rKJSzDtaX+BQnPkDY46sakn39BLqxrJ3Y2G59bt pUyhKEubqvaoWwpgbJUc2dO+2xWASUygFoqSIqNxHdbtG++kaAkCAfsOiVjtRY8B+gZv IsrabfggCnoZ7ID32/2b007Vdu+bnip9ax1kmi9kHsN6v6Bcv63gcGerELHrTwEHf3ro ouxwU7fuBK5bnBoLfu8zD8CjQLO4kGQZLOv0pIpARTgMwHKQ9nL2Kpt9CS0eHbD/kGNq BlpeWivL3F9FGFs3xgswcKni1ZT9F62ti4EY1/jo2Hv/I96WK9Xm5QA57pWiyLyZcbrG 3aUQ== X-Gm-Message-State: AOAM533lGhGTyqjuEEKM9HhsvUVanOaITrz075w3MQY113x8HbRZuLi5 vd6ltCaD9KyZwOhjGidlxVB2jkPdOgG9iQ9QZQ174bTToAvpZIeCDaE3hTMbRQJwQPJF4iP7sUC xe76+g6mlNRkxMpEHWqd1HLQ7t3ZvUqskYW4ReuNCXH22b6QUWESX X-Received: by 2002:a1f:e885:: with SMTP id f127mr13862405vkh.8.1612881854320; Tue, 09 Feb 2021 06:44:14 -0800 (PST) X-Google-Smtp-Source: ABdhPJzA5O9NpcqIBJe0awNqZm8tPg0cQZZB4KlsqIkj05GvmKtcOzWZsnmMK+O8n83wi2J8NA3PZD3jepku7+ih8AA= X-Received: by 2002:a1f:e885:: with SMTP id f127mr13862396vkh.8.1612881854098; Tue, 09 Feb 2021 06:44:14 -0800 (PST) MIME-Version: 1.0 References: <173182.1612861411@turing-police> In-Reply-To: <173182.1612861411@turing-police> From: Evan T Mesterhazy Date: Tue, 9 Feb 2021 09:44:03 -0500 Message-ID: Subject: Re: Changelog of features / drivers removed from kernel? To: =?UTF-8?Q?Valdis_Kl=C4=93tnieks?= X-CU-OB: Yes X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.369, 18.0.737 definitions=2021-02-09_03:2021-02-09, 2021-02-09 signatures=0 X-Proofpoint-Spam-Details: rule=inbound_notspam policy=inbound score=0 lowpriorityscore=10 adultscore=0 priorityscore=1501 malwarescore=0 impostorscore=10 clxscore=1015 mlxscore=0 mlxlogscore=690 spamscore=0 phishscore=0 bulkscore=10 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2102090076 Cc: Greg KH , kernelnewbies@kernelnewbies.org X-BeenThere: kernelnewbies@kernelnewbies.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Learn about the Linux kernel List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: multipart/mixed; boundary="===============8663537608322172446==" Errors-To: kernelnewbies-bounces@kernelnewbies.org --===============8663537608322172446== Content-Type: multipart/alternative; boundary="000000000000fa805f05bae851f3" --000000000000fa805f05bae851f3 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable It turns out, after building 14 different commits between v5.8 and v5.9, that a three line change in drivers/pci/controller/pci-xgene.c breaks PCI on this machine. If I revert this file and build the commit that changed it, PCI works properly. No config options changed between these commits. I suppose now it's just a matter of figuring out why this change breaks it, and how it can be fixed and applied to 5.9+. On Tue, Feb 9, 2021 at 4:03 AM Valdis Kl=C4=93tnieks wrote: > On Mon, 08 Feb 2021 09:00:27 -0500, Evan T Mesterhazy said: > > > Thanks, Greg - good suggestion regarding `git bisect`. I was able to > narrow > > it down to a change between 5.8 and 5.9, so maybe that's the next logic= al > > thing to do. None of the config options added between those releases > seemed > > relevant to the issue, but perhaps one of them is and I just don't > realize > > it. > > You're probably looking for a config option that was *removed* between > those releases. > --=20 Evan Mesterhazy etm2131@columbia.edu --000000000000fa805f05bae851f3 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
It turns out, after building 14 different commits between = v5.8 and v5.9, that a three line change in=C2=A0drivers/pci/controller/pci-= xgene.c breaks PCI on this machine. If I revert this file and build the com= mit that changed it, PCI works properly. No config options changed between = these commits.

I suppose now it's just a matter of f= iguring out why this change breaks it, and how it can be fixed and applied = to 5.9+.=C2=A0

On Tue, Feb 9, 2021 at 4:03 AM Valdis Kl=C4=93tnieks &l= t;valdis.kletnieks@vt.edu>= ; wrote:
On Mon,= 08 Feb 2021 09:00:27 -0500, Evan T Mesterhazy said:

> Thanks, Greg - good suggestion regarding `git bisect`. I was able to n= arrow
> it down to a change between 5.8 and 5.9, so maybe that's the next = logical
> thing to do. None of the config options added between those releases s= eemed
> relevant to the issue, but perhaps one of them is and I just don't= realize
> it.

You're probably looking for a config option that was *removed* between<= br> those releases.


--
Evan Mest= erhazy
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