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=-8.0 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,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 7844EC433E0 for ; Wed, 17 Jun 2020 07:51:17 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (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 3729A20760 for ; Wed, 17 Jun 2020 07:51:17 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="geNnX6GB" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3729A20760 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:41438 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jlSqq-0004Em-Gf for qemu-devel@archiver.kernel.org; Wed, 17 Jun 2020 03:51:16 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:46936) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jlSnf-0001CV-Ug for qemu-devel@nongnu.org; Wed, 17 Jun 2020 03:47:59 -0400 Received: from us-smtp-delivery-1.mimecast.com ([205.139.110.120]:23517 helo=us-smtp-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1jlSnd-0006Wy-VG for qemu-devel@nongnu.org; Wed, 17 Jun 2020 03:47:59 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1592380077; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:autocrypt:autocrypt; bh=93LU/Hdw20iYwz8VTCqDpjWGSThLIbquQQw0RT2yQuo=; b=geNnX6GBFTBuxmJBlCQC5E/QBC/WSP960aUnfEUibdfVcZX5pxvjDnfaohDsOM0lrJ8zF4 HfDGcaV/DKZKIIdKWeuN8fREXEY2CJyHfSREPJRs3S1TitjsJbWulZuyxQm94sVgz+lFFH E3dLp98fEb3srljVehCVCigyMVoXs64= Received: from mail-wm1-f70.google.com (mail-wm1-f70.google.com [209.85.128.70]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-212-AtFvXr8NPWKDsn5hdVqVTA-1; Wed, 17 Jun 2020 03:47:55 -0400 X-MC-Unique: AtFvXr8NPWKDsn5hdVqVTA-1 Received: by mail-wm1-f70.google.com with SMTP id q7so310114wmj.9 for ; Wed, 17 Jun 2020 00:47:55 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:autocrypt :message-id:date:user-agent:mime-version:in-reply-to :content-language:content-transfer-encoding; bh=93LU/Hdw20iYwz8VTCqDpjWGSThLIbquQQw0RT2yQuo=; b=ffcRl7CvRpMME9lqByNhasPNsybxTqbaFmp5DlGpv/R0owbVMYSiz+GCS20L+BjtZa ZZqq0o0ffHsfxeVTQdJk2JNCOGAl2IcptCkf81UqBQuBdoEHoFKzu12ZGkLooYcTsvv3 ze3usqDrrSC+2bl9RjKFcePcu6gSsZqrB7Nkt2IunuQWLY/Jtj40BLv21fKa9eBekeVB VKcMdTS9zF0E0PfeIWctH3nwVgnwcgl+mCraU4b1S6vNEIj/MtZ9woVVzaMJ1r+I6DM7 P639icIIL+6RbuAsaMtAEdWJEGzkS0wpF7vXdB/C234CsxUbJU2zc10tTkjaJ+z+7+T0 I7+g== X-Gm-Message-State: AOAM533+5QuPddDN7DeL+maN316++/3CrpxV0AZ6amgo5+uq8Sv/Od0X 85xZAiCcc6h8mmaijw8wwRw1l58kQs9/vmhVWeJnpqAX2eTHMt0cXjnZBAlIbORBeMqbj6PmMtM BAmnon20Bx8iBXYk= X-Received: by 2002:a1c:bb0b:: with SMTP id l11mr7570939wmf.31.1592380074538; Wed, 17 Jun 2020 00:47:54 -0700 (PDT) X-Google-Smtp-Source: ABdhPJxeJRVRCOpA9LrehKhjKIMlOal12lf5L6UyCsBiLPxf8r3r8RTFnZuowweq2JfbsHCwRxe9FA== X-Received: by 2002:a1c:bb0b:: with SMTP id l11mr7570926wmf.31.1592380074372; Wed, 17 Jun 2020 00:47:54 -0700 (PDT) Received: from [192.168.1.37] (93.red-83-59-160.dynamicip.rima-tde.net. [83.59.160.93]) by smtp.gmail.com with ESMTPSA id z6sm31834957wrh.79.2020.06.17.00.47.53 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 17 Jun 2020 00:47:53 -0700 (PDT) Subject: Re: [PATCH 4/6] prep: add ppc-parity write method To: P J P , Peter Maydell References: <20200617053934.122642-1-ppandit@redhat.com> <20200617053934.122642-5-ppandit@redhat.com> From: =?UTF-8?Q?Philippe_Mathieu-Daud=c3=a9?= Autocrypt: addr=philmd@redhat.com; keydata= mQINBDXML8YBEADXCtUkDBKQvNsQA7sDpw6YLE/1tKHwm24A1au9Hfy/OFmkpzo+MD+dYc+7 bvnqWAeGweq2SDq8zbzFZ1gJBd6+e5v1a/UrTxvwBk51yEkadrpRbi+r2bDpTJwXc/uEtYAB GvsTZMtiQVA4kRID1KCdgLa3zztPLCj5H1VZhqZsiGvXa/nMIlhvacRXdbgllPPJ72cLUkXf z1Zu4AkEKpccZaJspmLWGSzGu6UTZ7UfVeR2Hcc2KI9oZB1qthmZ1+PZyGZ/Dy+z+zklC0xl XIpQPmnfy9+/1hj1LzJ+pe3HzEodtlVA+rdttSvA6nmHKIt8Ul6b/h1DFTmUT1lN1WbAGxmg CH1O26cz5nTrzdjoqC/b8PpZiT0kO5MKKgiu5S4PRIxW2+RA4H9nq7nztNZ1Y39bDpzwE5Sp bDHzd5owmLxMLZAINtCtQuRbSOcMjZlg4zohA9TQP9krGIk+qTR+H4CV22sWldSkVtsoTaA2 qNeSJhfHQY0TyQvFbqRsSNIe2gTDzzEQ8itsmdHHE/yzhcCVvlUzXhAT6pIN0OT+cdsTTfif MIcDboys92auTuJ7U+4jWF1+WUaJ8gDL69ThAsu7mGDBbm80P3vvUZ4fQM14NkxOnuGRrJxO qjWNJ2ZUxgyHAh5TCxMLKWZoL5hpnvx3dF3Ti9HW2dsUUWICSQARAQABtDJQaGlsaXBwZSBN YXRoaWV1LURhdWTDqSAoUGhpbCkgPHBoaWxtZEByZWRoYXQuY29tPokCVQQTAQgAPwIbDwYL CQgHAwIGFQgCCQoLBBYCAwECHgECF4AWIQSJweePYB7obIZ0lcuio/1u3q3A3gUCXsfWwAUJ KtymWgAKCRCio/1u3q3A3ircD/9Vjh3aFNJ3uF3hddeoFg1H038wZr/xi8/rX27M1Vj2j9VH 0B8Olp4KUQw/hyO6kUxqkoojmzRpmzvlpZ0cUiZJo2bQIWnvScyHxFCv33kHe+YEIqoJlaQc JfKYlbCoubz+02E2A6bFD9+BvCY0LBbEj5POwyKGiDMjHKCGuzSuDRbCn0Mz4kCa7nFMF5Jv piC+JemRdiBd6102ThqgIsyGEBXuf1sy0QIVyXgaqr9O2b/0VoXpQId7yY7OJuYYxs7kQoXI 6WzSMpmuXGkmfxOgbc/L6YbzB0JOriX0iRClxu4dEUg8Bs2pNnr6huY2Ft+qb41RzCJvvMyu gS32LfN0bTZ6Qm2A8ayMtUQgnwZDSO23OKgQWZVglGliY3ezHZ6lVwC24Vjkmq/2yBSLakZE 6DZUjZzCW1nvtRK05ebyK6tofRsx8xB8pL/kcBb9nCuh70aLR+5cmE41X4O+MVJbwfP5s/RW 9BFSL3qgXuXso/3XuWTQjJJGgKhB6xXjMmb1J4q/h5IuVV4juv1Fem9sfmyrh+Wi5V1IzKI7 RPJ3KVb937eBgSENk53P0gUorwzUcO+ASEo3Z1cBKkJSPigDbeEjVfXQMzNt0oDRzpQqH2vp apo2jHnidWt8BsckuWZpxcZ9+/9obQ55DyVQHGiTN39hkETy3Emdnz1JVHTU0Q== Message-ID: Date: Wed, 17 Jun 2020 09:47:52 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.5.0 MIME-Version: 1.0 In-Reply-To: <20200617053934.122642-5-ppandit@redhat.com> Content-Language: en-US X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Received-SPF: pass client-ip=205.139.110.120; envelope-from=philmd@redhat.com; helo=us-smtp-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/06/16 23:30:45 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -30 X-Spam_score: -3.1 X-Spam_bar: --- X-Spam_report: (-3.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=_AUTOLEARN X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Prasad J Pandit , QEMU Developers , Lei Sun , Alex Williamson , =?UTF-8?Q?Herv=c3=a9_Poussineau?= , Joel Stanley , David Gibson Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On 6/17/20 7:39 AM, P J P wrote: > From: Prasad J Pandit > > Add ppc-parity mmio write method to avoid NULL pointer dereference > issue. > > Reported-by: Lei Sun > Signed-off-by: Prasad J Pandit > --- > hw/ppc/prep_systemio.c | 8 ++++++++ > 1 file changed, 8 insertions(+) > > diff --git a/hw/ppc/prep_systemio.c b/hw/ppc/prep_systemio.c > index bbc51b6e9a..aacd7831fd 100644 > --- a/hw/ppc/prep_systemio.c > +++ b/hw/ppc/prep_systemio.c > @@ -23,6 +23,7 @@ > */ > > #include "qemu/osdep.h" > +#include "qemu/log.h" > #include "hw/irq.h" > #include "hw/isa/isa.h" > #include "hw/qdev-properties.h" > @@ -235,8 +236,15 @@ static uint64_t ppc_parity_error_readl(void *opaque, hwaddr addr, > return val; > } > > +static void ppc_parity_error_writel(void *opaque, hwaddr addr, > + uint64_t data, unsigned size) > +{ > + qemu_log_mask(LOG_UNIMP, "%s not implemented\n", __func__); I understand the parity bits are calculated by the hardware, I doubt we can write them. So probably LOG_GUEST_ERROR or a transaction failure here. > +} > + > static const MemoryRegionOps ppc_parity_error_ops = { > .read = ppc_parity_error_readl, > + .write = ppc_parity_error_writel, > .valid = { > .min_access_size = 4, > .max_access_size = 4, >