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=-3.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT 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 5A62FC4332B for ; Tue, 24 Mar 2020 07:57:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2FA4E20735 for ; Tue, 24 Mar 2020 07:57:47 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="br2TskT8" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727662AbgCXH5q (ORCPT ); Tue, 24 Mar 2020 03:57:46 -0400 Received: from mail-pf1-f196.google.com ([209.85.210.196]:34866 "EHLO mail-pf1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725923AbgCXH53 (ORCPT ); Tue, 24 Mar 2020 03:57:29 -0400 Received: by mail-pf1-f196.google.com with SMTP id u68so8900936pfb.2; Tue, 24 Mar 2020 00:57:27 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id; bh=irBljOk0QGJugnxQ5NoCZPwwicJ4zDs3GnO11w4ORvU=; b=br2TskT81jlCGlhkMlcyUkXwfJ9+86FxwmIw3kWYiAoPf+WaTyYtOLzGwHo82lu0vU ZS0vfvkFrJwHxFg9eSK0gnxLGSzJMI4HfvYdA4KOLRVNRHNIJf/btU4N4zYWJJPEwVdo dvMXCMTkHzva+rO5PNA5ApOBlIzg6VRItPiywzt1qIx7HkR9P2t1RBAWyEtc70ERF+53 bhw/YvLjZso1riMMAq/XvR0z2YRqzH7ja7Rfuh9OazCLw+HsMZYYFa10zq+SBG5jVmJA zhGvwqchsPvkr0wz2YRhDHty73M4rN0ATrbe02YBCnKlnrrh709mIYvbyeLxpzCnzxu6 Utbg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id; bh=irBljOk0QGJugnxQ5NoCZPwwicJ4zDs3GnO11w4ORvU=; b=l8oFQ2Wkfw+n69yIcTW54Vl0G7hE2D3BJ4OUxwKnOsru61/XlSMgWZWhEEWmuKnQVv P/3poxkIK4IfGvKeQ3s+lo5Mvl3XLmSQr0QQb3GhYGmeKG7ycdNR2YA7HYFIhlil+a66 cUy/foa+Twtq4CkbPfx07MpAKvuI9AXYeKUAHBU320VHp4Hd4Rm6Vk0brSl1i1q544j8 ehfGvewneWPPf7lieIAhTsnmZ8YEW75NdBhxFRC/oCQ5MlR75YMYauLXiiCouguWHrY6 0EAxb2VOg5kVwUVV+IKgqgrrOcCe41rPQaSZmGqGhrX/5N8ZJP3FXlirFhzEr/x7zPYX zyTQ== X-Gm-Message-State: ANhLgQ1fP+bzYRWxNAC15IfxkOc7B2g4ZifpSlw7abfBUB0dzDSs+udm 3n1LJUgW4a9e3/eR5O8aTgw= X-Google-Smtp-Source: ADFU+vslW5lXR6gN2jsy0EJxGIJIAnA6uHfaiA5mI/xhgDmAa7y64XzffE4scQVRaOFXvZhlBqiyfA== X-Received: by 2002:a63:dd0a:: with SMTP id t10mr18825805pgg.50.1585036647270; Tue, 24 Mar 2020 00:57:27 -0700 (PDT) Received: from localhost.corp.microsoft.com ([167.220.2.210]) by smtp.googlemail.com with ESMTPSA id x71sm15452076pfd.129.2020.03.24.00.57.26 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Tue, 24 Mar 2020 00:57:26 -0700 (PDT) From: ltykernel@gmail.com X-Google-Original-From: Tianyu.Lan@microsoft.com To: kys@microsoft.com, haiyangz@microsoft.com, sthemmin@microsoft.com, liuwe@microsoft.com, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, hpa@zytor.com, x86@kernel.org, michael.h.kelley@microsoft.com Cc: Tianyu Lan , linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org, vkuznets@redhat.com Subject: [PATCH V3 0/6] x86/Hyper-V: Panic code path fixes Date: Tue, 24 Mar 2020 00:57:14 -0700 Message-Id: <20200324075720.9462-1-Tianyu.Lan@microsoft.com> X-Mailer: git-send-email 2.14.5 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Tianyu Lan This patchset fixes some issues in the Hyper-V panic code path. Patch 1 resolves issue that panic system still responses network packets. Patch 2-3,5-6 resolves crash enlightenment issues. Patch 4 is to set crash_kexec_post_notifiers to true for Hyper-V VM in order to report crash data or kmsg to host before running kdump kernel. Tianyu Lan (6): x86/Hyper-V: Unload vmbus channel in hv panic callback x86/Hyper-V: Free hv_panic_page when fail to register kmsg dump x86/Hyper-V: Trigger crash enlightenment only once during system crash. x86/Hyper-V: Report crash register data or ksmg before running crash kernel x86/Hyper-V: Report crash register data when sysctl_record_panic_msg is not set x86/Hyper-V: Report crash data in die() when panic_on_oops is set arch/x86/kernel/cpu/mshyperv.c | 10 +++++++ drivers/hv/channel_mgmt.c | 3 +++ drivers/hv/vmbus_drv.c | 61 +++++++++++++++++++++++++++++------------- 3 files changed, 56 insertions(+), 18 deletions(-) -- 2.14.5