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 2E00DC54FCE for ; Mon, 23 Mar 2020 13:09:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 009F22073E for ; Mon, 23 Mar 2020 13:09:41 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="e4nrWQdD" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728392AbgCWNJj (ORCPT ); Mon, 23 Mar 2020 09:09:39 -0400 Received: from mail-pj1-f68.google.com ([209.85.216.68]:53398 "EHLO mail-pj1-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728275AbgCWNJj (ORCPT ); Mon, 23 Mar 2020 09:09:39 -0400 Received: by mail-pj1-f68.google.com with SMTP id l36so6157015pjb.3; Mon, 23 Mar 2020 06:09:39 -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=UVUZSZmN0wfjBDMswnzLJO1IiNBLG8FZGAX4PW0SLkk=; b=e4nrWQdDZ5NyXWFxrTJOR86i5pZIZr/nwpPzSIUUS7OfQg0vG0p999rLCaZ4syxvqj rYTQkwVIfQvvsAibJBaJSw11yNn2RaV4LftQcZjYQihRm9SNXN5GYzLD3atDe1OuhCaa SBYpQFWc71X451bz9yKrmR0eTz9R0bFMPWVdY9Go6j+db3T30hfCiMvbR1zaUUuem0tD PZIO7xJtBsIc7PSLncYHnwHERLXXHTOB9I51bXpiP0CxGmJREOG6sWYpYj/qj/zYYeW7 mDSPMFrSOklfZq+si3TziJ9x3inTq8V/k5204MGzOqCA9F2B6t0eSQSx3i7Hkm+IdPy4 wjzw== 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=UVUZSZmN0wfjBDMswnzLJO1IiNBLG8FZGAX4PW0SLkk=; b=onxp7FADVsujDym7A+NZEQmuKQ99/bFT1OgFXIxPCVUcwGOg5Xl8om9iaJ0HMbsQ8M aPihbZ41M+KCPGJUBD1pdWgpEXrFLpiLg3JOhOvr1nTbSVqbd33m7Qma8XBt8UQhjBAY Np7mq0Ek7lr1iO477Xu+m2aRN5sElVN8fTsu2saRVx8/nVqgmCHTbIW+lo9cGDSQ+mBX AAcxLDhczaSFHKqSUdIETShUEqfFiOBP+AXV2t/gxy8h/3y4Ic/BrDzUXmiacJzXkXGm 04bDy3Q3OuBYrtEBX2pM3fCetKKG9lELwFELHNyWSHFtMnoI40xFno6t6Qv/gnsNBbW8 BPpA== X-Gm-Message-State: ANhLgQ03ImGn6uljcFtlPtAddlR2KX6e+rj0Qf2oeBBsl6kvOuToTw8Y n+2SLLhS/ikois2CCQzFu4A= X-Google-Smtp-Source: ADFU+vtB4leTBTZjE63gAMA35Rvm5e8MjeaU9ZkT+abole1ttsY0G4cq73QxN4AY1ERoj9DLZr9ndA== X-Received: by 2002:a17:90b:30ca:: with SMTP id hi10mr24931835pjb.113.1584968978640; Mon, 23 Mar 2020 06:09:38 -0700 (PDT) Received: from localhost.corp.microsoft.com ([131.107.147.210]) by smtp.googlemail.com with ESMTPSA id u14sm12262034pgg.67.2020.03.23.06.09.37 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Mon, 23 Mar 2020 06:09:37 -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 V2 0/6] x86/Hyper-V: Panic code path fixes Date: Mon, 23 Mar 2020 06:09:18 -0700 Message-Id: <20200323130924.2968-1-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 | 55 ++++++++++++++++++++++++++++-------------- 3 files changed, 50 insertions(+), 18 deletions(-) -- 2.14.5