From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754889AbbLXAw4 (ORCPT ); Wed, 23 Dec 2015 19:52:56 -0500 Received: from bh-25.webhostbox.net ([208.91.199.152]:42882 "EHLO bh-25.webhostbox.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752809AbbLXAwy (ORCPT ); Wed, 23 Dec 2015 19:52:54 -0500 To: "linux-kernel@vger.kernel.org" Cc: Lorenzo Pieralisi , Will Deacon , QEMU Developers , Mark Rutland , "linux-arm-kernel@lists.infradead.org" From: Guenter Roeck Subject: arm64 qemu tests failing in linux-next since 'arm64: kernel: enforce pmuserenr_el0 initialization and restore' Message-ID: <567B41E3.5060800@roeck-us.net> Date: Wed, 23 Dec 2015 16:52:51 -0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.4.0 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit X-Authenticated_sender: linux@roeck-us.net X-OutGoing-Spam-Status: No, score=-1.0 X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - bh-25.webhostbox.net X-AntiAbuse: Original Domain - vger.kernel.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - roeck-us.net X-Get-Message-Sender-Via: bh-25.webhostbox.net: authenticated_id: linux@roeck-us.net X-Authenticated-Sender: bh-25.webhostbox.net: linux@roeck-us.net X-Source: X-Source-Args: X-Source-Dir: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi all, since commit 60792ad349f3 ("arm64: kernel: enforce pmuserenr_el0 initialization and restore"), my arm64 qemu tests of linux-next are failing. After this commit, qemu does not display any output. Qemu version is 2.5.0. Linux kernel configuration is arm64:defconfig. qemu command line is as follows: qemu-system-aarch64 -machine virt -cpu cortex-a57 -machine type=virt -nographic -smp 1 \ -m 512 -kernel arch/arm64/boot/Image -initrd rootfs.arm64.cpio -no-reboot \ -append "console=ttyAMA0" Any idea what might cause this problem and how to fix it (presumably in qemu) ? Bisect log is attached below. Reverting commit 60792ad349f3 on top of linux-next fixes the problem. Thanks, Guenter --- # bad: [80c75a0f1d81922bf322c0634d1e1a15825a89e6] Add linux-next specific files for 20151223 # good: [4ef7675344d687a0ef5b0d7c0cee12da005870c0] Linux 4.4-rc6 git bisect start 'HEAD' 'v4.4-rc6' # bad: [52c8be920db8e42d195ca7fe93fe31aa9958100e] Merge remote-tracking branch 'drm/drm-next' git bisect bad 52c8be920db8e42d195ca7fe93fe31aa9958100e # bad: [ef1ebde6af4d839a07d787440e35f0ae3b02e567] Merge remote-tracking branch 'v4l-dvb/master' git bisect bad ef1ebde6af4d839a07d787440e35f0ae3b02e567 # bad: [1e4012d4f91fd118167f14c4172bf779a7884d26] Merge remote-tracking branch 'tegra/for-next' git bisect bad 1e4012d4f91fd118167f14c4172bf779a7884d26 # good: [392fd3291c93094ca65853cca5e168016c4e08b1] Merge branch 'next/dt64' into for-next git bisect good 392fd3291c93094ca65853cca5e168016c4e08b1 # bad: [49fc6d2449b0cebd9738694a9c9ee794c3686797] Merge remote-tracking branch 'omap/for-next' git bisect bad 49fc6d2449b0cebd9738694a9c9ee794c3686797 # bad: [f5a47ef34509cbce244c18bef02b175d0e48dc4f] Merge remote-tracking branch 'at91/at91-next' git bisect bad f5a47ef34509cbce244c18bef02b175d0e48dc4f # good: [59f8d523983105e8490603ae1c0798207e9781e6] Merge remote-tracking branch 'arc/for-next' git bisect good 59f8d523983105e8490603ae1c0798207e9781e6 # good: [40499303a6c59c96da587a91fca617017106e908] Merge branch 'next/defconfig' into for-next git bisect good 40499303a6c59c96da587a91fca617017106e908 # good: [ea07b401d16052b43782c6389c9c2115aa3077ff] Merge branches 'component' and 'misc' into for-next git bisect good ea07b401d16052b43782c6389c9c2115aa3077ff # bad: [5d7ee87708d4d86fcc32afc9552d05f7625d303d] arm64: perf: add support for Cortex-A72 git bisect bad 5d7ee87708d4d86fcc32afc9552d05f7625d303d # good: [9e9caa6a496174e53d7753baa4779717771da4a7] arm64: perf: Add event descriptions git bisect good 9e9caa6a496174e53d7753baa4779717771da4a7 # bad: [60792ad349f3c6dc5735aafefe5dc9121c79e320] arm64: kernel: enforce pmuserenr_el0 initialization and restore git bisect bad 60792ad349f3c6dc5735aafefe5dc9121c79e320 # good: [aae881ad73460e1b2aea01f079a0541bd5a9136c] arm64: perf: Correct Cortex-A53/A57 compatible values git bisect good aae881ad73460e1b2aea01f079a0541bd5a9136c # first bad commit: [60792ad349f3c6dc5735aafefe5dc9121c79e320] arm64: kernel: enforce pmuserenr_el0 initialization and restore