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=-4.1 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 89F95C433E6 for ; Mon, 31 Aug 2020 16:19:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 652992083E for ; Mon, 31 Aug 2020 16:19:35 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=alien8.de header.i=@alien8.de header.b="EDsIHgwX" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728701AbgHaQTd (ORCPT ); Mon, 31 Aug 2020 12:19:33 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34652 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728609AbgHaQTX (ORCPT ); Mon, 31 Aug 2020 12:19:23 -0400 Received: from mail.skyhub.de (mail.skyhub.de [IPv6:2a01:4f8:190:11c2::b:1457]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2EE03C061573; Mon, 31 Aug 2020 09:19:23 -0700 (PDT) Received: from zn.tnic (p200300ec2f085000329c23fffea6a903.dip0.t-ipconnect.de [IPv6:2003:ec:2f08:5000:329c:23ff:fea6:a903]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.skyhub.de (SuperMail on ZX Spectrum 128k) with ESMTPSA id 0B0CA1EC0411; Mon, 31 Aug 2020 18:19:17 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alien8.de; s=dkim; t=1598890757; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:in-reply-to:in-reply-to: references:references; bh=rfL6k8Otj4TxyClxiKln37HVfqC0ievcDAsLc0DJkWM=; b=EDsIHgwX4tVHtK0n4PAPlmr/1oxSVwSpoQg7yhXnSblad9KBBMSOLccMUg7mceWT5svqDj OfEhXwpzw1N94ysizfWVf40V5wdQP3Y1nhhab5b/ebZjVR5UPAskkVeP8cWoGg7vrzJpnw lALWl4sL/m2Ed+Edig69RARGCN2TZ1Q= Date: Mon, 31 Aug 2020 18:19:09 +0200 From: Borislav Petkov To: Joerg Roedel Cc: x86@kernel.org, Joerg Roedel , hpa@zytor.com, Andy Lutomirski , Dave Hansen , Peter Zijlstra , Jiri Slaby , Dan Williams , Tom Lendacky , Juergen Gross , Kees Cook , David Rientjes , Cfir Cohen , Erdem Aktas , Masami Hiramatsu , Mike Stunes , Sean Christopherson , Martin Radev , linux-kernel@vger.kernel.org, kvm@vger.kernel.org, virtualization@lists.linux-foundation.org Subject: Re: [PATCH v6 64/76] x86/sev-es: Handle #DB Events Message-ID: <20200831161909.GJ27517@zn.tnic> References: <20200824085511.7553-1-joro@8bytes.org> <20200824085511.7553-65-joro@8bytes.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20200824085511.7553-65-joro@8bytes.org> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Aug 24, 2020 at 10:54:59AM +0200, Joerg Roedel wrote: > From: Joerg Roedel > > Handle #VC exceptions caused by #DB exceptions in the guest. Those > must be handled outside of instrumentation_begin()/end() so that the > handler will not be raised recursivly. ^^^^^^^^^^ "recursively" -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette