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bh=4zHuApudvsembsl93d5mPQWIvtbUd2sJzinQJg0giqU=; b=hcJqbk7OZyzi6sT9cOdnPBnEsa9nnfv1jzGrW5RAn710guzLgmsaCxKgS0ObYb5zMsdW7o rvx/NDpQprCpj9FjTTZCGWtRawxpadlFZg5PtdwFnsMiCUS4mAwhPQ63/3mUaHiuyAvPrS yh1Bywoeh/pxFPHeDSTRBuVAvqTcJ5M= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-175-lVuRYFEGPRikU0kOUZclWw-1; Thu, 22 Oct 2020 10:13:19 -0400 X-MC-Unique: lVuRYFEGPRikU0kOUZclWw-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 51D3018C89DA; Thu, 22 Oct 2020 14:13:18 +0000 (UTC) Received: from localhost (ovpn-114-229.ams2.redhat.com [10.36.114.229]) by smtp.corp.redhat.com (Postfix) with ESMTP id 40AB66EF48; Thu, 22 Oct 2020 14:13:14 +0000 (UTC) Date: Thu, 22 Oct 2020 15:13:13 +0100 From: Stefan Hajnoczi To: Philippe =?iso-8859-1?Q?Mathieu-Daud=E9?= Subject: Re: [PATCH 05/16] util/vfio-helpers: Trace PCI I/O config accesses Message-ID: <20201022141313.GE761187@stefanha-x1.localdomain> References: <20201020172428.2220726-1-philmd@redhat.com> <20201020172428.2220726-6-philmd@redhat.com> MIME-Version: 1.0 In-Reply-To: <20201020172428.2220726-6-philmd@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=stefanha@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="nHwqXXcoX0o6fKCv" Content-Disposition: inline Received-SPF: pass client-ip=216.205.24.124; envelope-from=stefanha@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/10/22 08:33:10 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, 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=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no 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: Kevin Wolf , Fam Zheng , qemu-block@nongnu.org, qemu-devel@nongnu.org, Max Reitz , Alex Williamson Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" --nHwqXXcoX0o6fKCv Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, Oct 20, 2020 at 07:24:17PM +0200, Philippe Mathieu-Daud=E9 wrote: > We sometime get kernel panic with some devices on Aarch64 > hosts. Alex Williamson suggests it might be broken PCIe > root complex. Add trace event to record the latest I/O > access before crashing. In case, assert our accesses are > aligned. >=20 > Reviewed-by: Fam Zheng > Signed-off-by: Philippe Mathieu-Daud=E9 > --- > util/vfio-helpers.c | 8 ++++++++ > util/trace-events | 2 ++ > 2 files changed, 10 insertions(+) Reviewed-by: Stefan Hajnoczi --nHwqXXcoX0o6fKCv Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEhpWov9P5fNqsNXdanKSrs4Grc8gFAl+Rk3kACgkQnKSrs4Gr c8jxpAf/X7kPmzfwmFpDinjytg4bcMKP22xSAAaJgvCvGVB7t7Ifotm9JdbRJiOg AYAY1GuYyfoawmrM5vfYYm+7oqT2a/hvlKRgtenmMOuIm7towOC36GctgRCgaf5T 3ZJ8VrORsX1/2KEUW7+ka3Blk1GG3KP8RrDXJku4J5JXXKG2a0wEj9K4h3Gbhi+Q fkV3xNLyjbPAV8ugw+CJt9dLVTmEoI0OGqmCoPvjgBcAikq+iHnXE0HAFMQB+EbE j6zW6t++CXB4stixgY90xcg43HcHwySgiqD2oR+4UyZj5NnTuxqOoiwk+Cw28biS VejibITfQFpSAHm2i9QYVzHXPPNkMA== =vTa4 -----END PGP SIGNATURE----- --nHwqXXcoX0o6fKCv--