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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id EFEFAC433FE for ; Mon, 6 Dec 2021 14:14:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1343739AbhLFORj (ORCPT ); Mon, 6 Dec 2021 09:17:39 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41322 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1343688AbhLFORi (ORCPT ); Mon, 6 Dec 2021 09:17:38 -0500 Received: from mail-pg1-x529.google.com (mail-pg1-x529.google.com [IPv6:2607:f8b0:4864:20::529]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BB5AEC0613F8; Mon, 6 Dec 2021 06:14:09 -0800 (PST) Received: by mail-pg1-x529.google.com with SMTP id f125so10642170pgc.0; Mon, 06 Dec 2021 06:14:09 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=message-id:date:mime-version:user-agent:subject:content-language:to :cc:references:from:in-reply-to:content-transfer-encoding; bh=LG+zF8eXNnqFsGFKA2ZTnXSPUueJWK5YxbpbucSufXI=; b=mQqUkA3xIsQY4XmQYBzGNmYRws6Q0JrMJpuTq/VEAZ58elCNocHbrP8QMV+4phw9Ut vWKeJdfRRl2H6A3/U0ZfFrg46WCHuxCz5sAlIyGUXSN9dXWnqcoQP+R/jmprw5bfpFHj fKOmzAhbS2g+OM1Z5BI3nXKStQ11a7SSrQ5tFd6125uR6KPjsGJebIfx224pdX+EvGle FqorCYj7anmbSaX4e41EWyvuvtjfgov84k+oRDD0xrawuDr2dYvzxxLjG9dUVswmsHTE elai+rbP43KznXg+HMIMYpPzORZYpPi24LOHZHh8JFVSoiDVYRN7mdHXVcauIlegBAj5 mHBg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:message-id:date:mime-version:user-agent:subject :content-language:to:cc:references:from:in-reply-to :content-transfer-encoding; bh=LG+zF8eXNnqFsGFKA2ZTnXSPUueJWK5YxbpbucSufXI=; b=a/a6H3WXUQOc4RaM7MjJoynXjSlcbcd9Yu0dTzizVhzGcmw0SE2WnNEw2ggS7rTUxz l6YR0WejXUMO6myj40TFebIuLWBsuobLSd6WVJJA3lKQBPsVnvfmvdodAO25s9Y+e5in ySDQbEb65xcUFsG641MqU5dXvLRO1hRxCAFMUnfWzISRtaVROCOjb4yFbhfUS26VNe3i SUtgfu0u5plvrmXU80U3G33ZWRYVfrxVrxVXEn2353eASEUwPB/7PlZQOaD/GKqtqXJr CNHqxg9sql30CUncmMjc7B2LR2O7d64XnvsudowfSChoUAykyz4XTlg0XjOz0v5bwl6Y 33BQ== X-Gm-Message-State: AOAM5329jm21pOA/9nlt5UAbFCIgkmAOyfhk71dbT2P+spgg70P4Wg1V hVBRaMzMEozSkWL/C4gsfdA= X-Google-Smtp-Source: ABdhPJySAj+QT4OHzaoYLk1cSWHqCc54qgRjOngjnxP5g2RiZmDR4g0TxiHn1EhVWrwC669mfsgWOQ== X-Received: by 2002:a62:7e4c:0:b0:4a2:678e:8793 with SMTP id z73-20020a627e4c000000b004a2678e8793mr36890086pfc.75.1638800049309; Mon, 06 Dec 2021 06:14:09 -0800 (PST) Received: from ?IPV6:2404:f801:0:5:8000::50b? ([2404:f801:9000:18:efec::50b]) by smtp.gmail.com with ESMTPSA id pi17sm14658528pjb.34.2021.12.06.06.13.58 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 06 Dec 2021 06:14:08 -0800 (PST) Message-ID: <4d9049eb-d3a8-3872-c4c3-4ad41d93b58c@gmail.com> Date: Mon, 6 Dec 2021 22:13:57 +0800 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:91.0) Gecko/20100101 Thunderbird/91.3.2 Subject: Re: [PATCH V4 2/5] x86/hyper-v: Add hyperv Isolation VM check in the cc_platform_has() Content-Language: en-US To: Christoph Hellwig Cc: kys@microsoft.com, haiyangz@microsoft.com, sthemmin@microsoft.com, wei.liu@kernel.org, decui@microsoft.com, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com, jgross@suse.com, sstabellini@kernel.org, boris.ostrovsky@oracle.com, joro@8bytes.org, will@kernel.org, davem@davemloft.net, kuba@kernel.org, jejb@linux.ibm.com, martin.petersen@oracle.com, arnd@arndb.de, hch@infradead.org, m.szyprowski@samsung.com, robin.murphy@arm.com, thomas.lendacky@amd.com, Tianyu.Lan@microsoft.com, xen-devel@lists.xenproject.org, michael.h.kelley@microsoft.com, iommu@lists.linux-foundation.org, linux-arch@vger.kernel.org, linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org, netdev@vger.kernel.org, vkuznets@redhat.com, brijesh.singh@amd.com, konrad.wilk@oracle.com, parri.andrea@gmail.com, dave.hansen@intel.com References: <20211205081815.129276-1-ltykernel@gmail.com> <20211205081815.129276-3-ltykernel@gmail.com> <20211206140651.GA5100@lst.de> From: Tianyu Lan In-Reply-To: <20211206140651.GA5100@lst.de> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Christoph: Thanks for your review. On 12/6/2021 10:06 PM, Christoph Hellwig wrote: > On Sun, Dec 05, 2021 at 03:18:10AM -0500, Tianyu Lan wrote: >> +static bool hyperv_cc_platform_has(enum cc_attr attr) >> +{ >> +#ifdef CONFIG_HYPERV >> + return attr == CC_ATTR_GUEST_MEM_ENCRYPT; >> +#else >> + return false; >> +#endif >> +} > > Can we even end up here without CONFIG_HYPERV? > Yes, I will update in the next version. Thanks.