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=-10.0 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=ham 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 22BB4C35247 for ; Thu, 6 Feb 2020 20:31:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E63BB214AF for ; Thu, 6 Feb 2020 20:31:50 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="t31A+SbT" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727916AbgBFUbu (ORCPT ); Thu, 6 Feb 2020 15:31:50 -0500 Received: from mail-pl1-f196.google.com ([209.85.214.196]:45531 "EHLO mail-pl1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727698AbgBFUbt (ORCPT ); Thu, 6 Feb 2020 15:31:49 -0500 Received: by mail-pl1-f196.google.com with SMTP id b22so10402pls.12 for ; Thu, 06 Feb 2020 12:31:49 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=mPfBWVjSrQlutcw1BrAjL4XXYPCEqBan2GAZ0ciyj6I=; b=t31A+SbTqXDM3lEZg4KVayrqxz74VfDSMz0w2WvaMJXsYL+/wwwhrDYGEX2qgqmKyS T9ENHQjxDjxiYZAQ35oSiJpV/SQn15eayrkfZJQv9jG0sXDmaERveWlSnAjoDYNh+bbx WDpQAd2lWiS0RqL1JIdMx+3Cc9HT6I8SWPZK/Hlt3ZZo16vX0lZ5PD0rmELFccZh70an UC8dwfmSlUYELL5HjybT4BbBLDBT20kVPbo5MOWC9WI/bxqb77W4J1rv0/AIdMvHeTQG sXirGfv/kByGfH7S/dFS+IkZMUn+NgMFrWwyWWKgJBAXYnmDnVlBjkhI1ILmbIp1rPQC IYtQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:date:from:to:cc:subject:message-id :references:mime-version:content-disposition:in-reply-to:user-agent; bh=mPfBWVjSrQlutcw1BrAjL4XXYPCEqBan2GAZ0ciyj6I=; b=SfgAIduHklTZDbl8UO0QlbCgzYSbawk4B0oUaSTZ3t6CIV/93sfLk8ToS28p7hY0YR 6jENhdYLTn+kRMP8gFqXgKS0Hn8uXbdQMHuEMQpWsUUAa/6Fn00RQ5SuRFByWonkHfj9 nxcpkRH7QFO3Uz92YfmjNPOuyNvxFJLQd7VqfzL3qVwLF7yN45kGGS2jOXgdJeuiAai5 R36uCW/DFyaZhqKpo4De3Q3nSM2C3FXlL2/lb4pHFoRKlAUZqWOYxazU5Jo+7cJTp11d Xhilcsl2jY6cmSaA1cOHb6yrAZpV12Efjl9H/YbAdl8DmU6CmpRebrn6MQ1cjhUJAo8S ab7Q== X-Gm-Message-State: APjAAAVs9VpmkJGCcAPE/nhORVlos8y6ZXE0ySoWuYl6RFIcXQJnIQui Z5TraRUgAIfSjsWrj2s/Stf7SH7V X-Google-Smtp-Source: APXvYqzUg01IbqeYCsdPP/DQ0kp6K10e48GyKhji0m1indNoTWW7YrDDzFrVl7ixXMHgdWzthxpSVQ== X-Received: by 2002:a17:90a:a881:: with SMTP id h1mr6727767pjq.50.1581021109086; Thu, 06 Feb 2020 12:31:49 -0800 (PST) Received: from localhost ([2600:1700:e321:62f0:329c:23ff:fee3:9d7c]) by smtp.gmail.com with ESMTPSA id h13sm161679pjc.9.2020.02.06.12.31.47 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Thu, 06 Feb 2020 12:31:48 -0800 (PST) Date: Thu, 6 Feb 2020 12:31:46 -0800 From: Guenter Roeck To: Christophe Leroy Cc: Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , dja@axtens.net, linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-mm@kvack.org Subject: Re: [PATCH v5 17/17] powerpc/32s: Enable CONFIG_VMAP_STACK Message-ID: <20200206203146.GA23248@roeck-us.net> References: <2e2509a242fd5f3e23df4a06530c18060c4d321e.1576916812.git.christophe.leroy@c-s.fr> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <2e2509a242fd5f3e23df4a06530c18060c4d321e.1576916812.git.christophe.leroy@c-s.fr> User-Agent: Mutt/1.9.4 (2018-02-28) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, Dec 21, 2019 at 08:32:38AM +0000, Christophe Leroy wrote: > A few changes to retrieve DAR and DSISR from struct regs > instead of retrieving them directly, as they may have > changed due to a TLB miss. > > Also modifies hash_page() and friends to work with virtual > data addresses instead of physical ones. Same on load_up_fpu() > and load_up_altivec(). > > Signed-off-by: Christophe Leroy This patch results in qemu boot failures (mac99 with pmac32_defconfig). Images fail silently; there is no console output. Reverting the patch fixes the problem. Bisect log is attached below. Assuming this was tested on real hardware, am I correct to assume that qemu for ppc32 (more specifically, qemu's mac99 and g3beige machines) no longer works with the upstream kernel ? Thanks, Guenter --- # bad: [33b40134e5cfbbccad7f3040d1919889537a3df7] Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net # good: [d4e9056daedca3891414fe3c91de3449a5dad0f2] initramfs: do not show compression mode choice if INITRAMFS_SOURCE is empty git bisect start '33b40134e5cf' 'd4e9056daedc' # good: [9717c1cea16e3eae81ca226f4c3670bb799b61ad] Merge tag 'drm-next-2020-02-04' of git://anongit.freedesktop.org/drm/drm git bisect good 9717c1cea16e3eae81ca226f4c3670bb799b61ad # bad: [4c25df5640ae6e4491ee2c50d3f70c1559ef037d] Merge branch 'topic/user-access-begin' into next git bisect bad 4c25df5640ae6e4491ee2c50d3f70c1559ef037d # good: [846a17a53aeeee426cbc1252f517a6660eab1427] powerpc/powernv: Use common code for the symbol_map export git bisect good 846a17a53aeeee426cbc1252f517a6660eab1427 # good: [afe1ec5ab83029baf0f8368a255dc6b998bde576] powerpc/8xx: Split breakpoint exception git bisect good afe1ec5ab83029baf0f8368a255dc6b998bde576 # bad: [43e76cd368fbb67e767da5363ffeaa3989993c8c] powerpc: Do not consider weak unresolved symbol relocations as bad git bisect bad 43e76cd368fbb67e767da5363ffeaa3989993c8c # bad: [af1725d2493dcad4eeb7e63141678181fcd8a2ff] powerpc/kconfig: Move CONFIG_PPC32 into Kconfig.cputype git bisect bad af1725d2493dcad4eeb7e63141678181fcd8a2ff # good: [94dd54c51a410b9ffa6356c3ed2ab0317f998ded] powerpc/32s: Avoid crossing page boundary while changing SRR0/1. git bisect good 94dd54c51a410b9ffa6356c3ed2ab0317f998ded # bad: [0f9aee0cb9da7db7d96f63cfa2dc5e4f1bffeb87] powerpc/mm: Don't log user reads to 0xffffffff git bisect bad 0f9aee0cb9da7db7d96f63cfa2dc5e4f1bffeb87 # bad: [cd08f109e26231b279bcc0388428afcac6408ec6] powerpc/32s: Enable CONFIG_VMAP_STACK git bisect bad cd08f109e26231b279bcc0388428afcac6408ec6 # first bad commit: [cd08f109e26231b279bcc0388428afcac6408ec6] powerpc/32s: Enable CONFIG_VMAP_STACK