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=-3.9 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 1AB4EC2BB1D for ; Tue, 17 Mar 2020 13:25:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D72972076A for ; Tue, 17 Mar 2020 13:25:32 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="iG0Wk+45" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726559AbgCQNZb (ORCPT ); Tue, 17 Mar 2020 09:25:31 -0400 Received: from mail-pg1-f194.google.com ([209.85.215.194]:39844 "EHLO mail-pg1-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725872AbgCQNZa (ORCPT ); Tue, 17 Mar 2020 09:25:30 -0400 Received: by mail-pg1-f194.google.com with SMTP id b22so5748972pgb.6; Tue, 17 Mar 2020 06:25:30 -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:mime-version :content-transfer-encoding; bh=agG+dITcuAm3KPc+VwzNwpsgr+i8A6gZOBf/aTNCeRE=; b=iG0Wk+45lpTMF6Qs9ptAuWGLvyCn/OdTa5ZWDJ7CrFZLWBOV7vQsaN+wETj/Ypzo8/ 5+g1gwgRhqIIDY7bAGP+7sSPXhCqYE4CGiDNG4stIeOKHgHdZ0QP1OGU7Mbs40zcsfbd meweTxGdlZ5pVXW01Jm7BAPxgUXoZJmWOUBe6phYUM+5z3aMhyT+o4bxug8EPSi+boGg UrnhKwlf+VofnjUMkhdoGkZP8+AcA5ISstIsrVYoxsmwqBcOswUUdDyH0noKSLa+fHHa h38JHOEbcLeP4ZLetyy9xB9qAR2zNOWSgw/ioSS9FLWRk31/bFWmMB3rtKU8226evWBI cNTw== 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:mime-version :content-transfer-encoding; bh=agG+dITcuAm3KPc+VwzNwpsgr+i8A6gZOBf/aTNCeRE=; b=UNsKLiyqkroO8ZcDUx/WQWZXdVXvl8KeuuN+WY7UjCm77zGPDcHgZcoFr53nduiqOI GgZ2r9bgIhW9cMcAspiLOL4Jlu6XGVEW65EFiNoz4wXC5j71WEdpnrC11jfsybhoVm5z iIKe7YC8kqLY1LxBAJ2u10T5L+GGSLv51KGoRqIWqiFsfUe9p+ECm55y0UPumLCrZT2x M0T2+G9OvwvZ6OV24bGOKuAxPIOG3Agy6YZvLQyxfQQ+Wy+VIcgufXEARvzKmFuWZkn3 WzTKZf3kdTe68uSotX/v0DADzjD2Fh0Hr29yROgjqsmPooUNNCANzoGRhSFsmt77nsLN wzfQ== X-Gm-Message-State: ANhLgQ3FYdyO5vrKfhuZZNoK/P9WZ5b7Y/Iu1VpES0Da3qrTWsU6T7I6 TjNAR86RJhN9IoJDrv4QZSQ= X-Google-Smtp-Source: ADFU+vsLRcmJ2YKpbw2In4/U3k6OYkKkfv94ONyzhv0jHQQnV+sSmfb3hOtExDusuMk9QBCfjQ4QnA== X-Received: by 2002:a63:348b:: with SMTP id b133mr5272049pga.372.1584451529546; Tue, 17 Mar 2020 06:25:29 -0700 (PDT) Received: from localhost.corp.microsoft.com ([167.220.2.210]) by smtp.googlemail.com with ESMTPSA id e30sm2910902pga.6.2020.03.17.06.25.28 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Tue, 17 Mar 2020 06:25:28 -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 0/4] x86/Hyper-V: Panic code path fixes Date: Tue, 17 Mar 2020 06:25:19 -0700 Message-Id: <20200317132523.1508-1-Tianyu.Lan@microsoft.com> X-Mailer: git-send-email 2.14.5 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 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 (4): 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 arch/x86/kernel/cpu/mshyperv.c | 10 ++++++++++ drivers/hv/channel_mgmt.c | 5 +++++ drivers/hv/vmbus_drv.c | 35 +++++++++++++++++++++++++---------- 3 files changed, 40 insertions(+), 10 deletions(-) -- 2.14.5