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 Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 0BC35C77B73 for ; Wed, 31 May 2023 08:42:42 +0000 (UTC) Received: from list by lists.xenproject.org with outflank-mailman.541659.844623 (Exim 4.92) (envelope-from ) id 1q4HPP-0007qX-5v; Wed, 31 May 2023 08:42:19 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 541659.844623; Wed, 31 May 2023 08:42:19 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1q4HPP-0007qQ-36; Wed, 31 May 2023 08:42:19 +0000 Received: by outflank-mailman (input) for mailman id 541659; Wed, 31 May 2023 08:42:17 +0000 Received: from se1-gles-flk1-in.inumbo.com ([94.247.172.50] helo=se1-gles-flk1.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1q4HPN-0007qK-OB for xen-devel@lists.xenproject.org; Wed, 31 May 2023 08:42:17 +0000 Received: from mail-lf1-x12b.google.com (mail-lf1-x12b.google.com [2a00:1450:4864:20::12b]) by se1-gles-flk1.inumbo.com (Halon) with ESMTPS id 0acbb42c-ff8f-11ed-8611-37d641c3527e; Wed, 31 May 2023 10:42:14 +0200 (CEST) Received: by mail-lf1-x12b.google.com with SMTP id 2adb3069b0e04-4f4b384c09fso6483110e87.3 for ; Wed, 31 May 2023 01:42:15 -0700 (PDT) Received: from EMEAENGAAD19049. (default-46-102-197-194.interdsl.co.uk. [46.102.197.194]) by smtp.gmail.com with ESMTPSA id bg22-20020a05600c3c9600b003f4283f5c1bsm2549802wmb.2.2023.05.31.01.42.14 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 31 May 2023 01:42:14 -0700 (PDT) X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: 0acbb42c-ff8f-11ed-8611-37d641c3527e DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cloud.com; s=cloud; t=1685522535; x=1688114535; h=in-reply-to:content-transfer-encoding:content-disposition :mime-version:references:subject:cc:to:from:date:message-id:from:to :cc:subject:date:message-id:reply-to; bh=Osa6hVxTZdMNXuW1v1cwzqZsai20sLwtKYlmBbJRRqU=; b=M1ROsHsJwnjZ89apSgITOKrlhXXAt8aM4NwhpsZ9q3BYqQH93jP11khg+auJeK8a5f gue9HSh56ehbqjVeHF1XjPH/kme6rnBnEMBY4ZTyCKXFFRyC4bijwZw5yBNWpq36tTg6 msh6tnEUCrIADgpJdLdekWKD2BvJ5CIYlyz54= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1685522535; x=1688114535; h=in-reply-to:content-transfer-encoding:content-disposition :mime-version:references:subject:cc:to:from:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=Osa6hVxTZdMNXuW1v1cwzqZsai20sLwtKYlmBbJRRqU=; b=R055RyI+Dhn2E38jW90fkht7p6zzMFKRsvU2us7MnQDumSirLyA9lMcJdlFbt/KKnq Dl+s1SovbyKZR0pavv1HLAtPudrTC12aCoWtEc/izYwV++gm/muw88buS2ZyX+PAsrZL XNJ4s8lPQaFBCFy4DyAMf8hxb5i8ej3Ok6K+/B4sUo00AjCOgFyJetfxabPmyOu0QP3H DNlmrtb4GoA8jp+D232i5THoJu1cCpOHaKckxrw/yA+7Ms7jLGmGi00/6wMwtaF88uhW XaUu+NWvapGeLBmXCdk312YV0mz27MmWy3AeQFZOEAgjW2Lk/n2SLVU8fkF8hcmv02ED 2P/g== X-Gm-Message-State: AC+VfDyZVfgKDscGocOfDKaxSsVyAgt3hzAQv8YUDcZZtdrrHPmd78fy vKTmWghgbRi08QUZcILUWAXS33MVKQlYEBjVzFQ= X-Google-Smtp-Source: ACHHUZ6+f7F6JUKyaOyaNOXYrEv5GBvVb05c20J98HURKyeck1hZ9prak3v5hnBpfX4Fo6VahfXLXg== X-Received: by 2002:a05:6512:72:b0:4ef:f09c:c505 with SMTP id i18-20020a056512007200b004eff09cc505mr2063845lfo.37.1685522534956; Wed, 31 May 2023 01:42:14 -0700 (PDT) Message-ID: <64770866.050a0220.c32a7.5357@mx.google.com> X-Google-Original-Message-ID: Date: Wed, 31 May 2023 09:42:13 +0100 From: Alejandro Vallejo To: Andrew Cooper Cc: Xen-devel , Wei Liu , Anthony PERARD , Juergen Gross , Jan Beulich , Roger Pau =?iso-8859-1?Q?Monn=E9?= Subject: Re: [PATCH v2 1/3] x86: Add bit definitions for Automatic IBRS References: <20230530135854.1517-1-alejandro.vallejo@cloud.com> <20230530135854.1517-2-alejandro.vallejo@cloud.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: On Tue, May 30, 2023 at 06:29:14PM +0100, Andrew Cooper wrote: > ... I've changed this on commit to just "Automatic IBRS".  The behaviour > is more far complicated than this, and anyone who wants to know needs to > read the manual extra carefully. > > For one, there's a behaviour which depends on whether SEV-SNP was > enabled in firmware... > > ~Andrew Ack. Alejandro