Received: by 2002:a05:6a10:17d3:0:0:0:0 with SMTP id hz19csp107559pxb; Wed, 14 Apr 2021 10:31:05 -0700 (PDT) X-Google-Smtp-Source: ABdhPJyJu5nto3B/h0zgGVvMAMZAD99gtOGoC7XwD9j3OZHol8K5F1oF6J6O4Whx1bQg3DGoQUU3 X-Received: by 2002:a17:906:c9d0:: with SMTP id hk16mr38977656ejb.512.1618421465369; Wed, 14 Apr 2021 10:31:05 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1618421465; cv=none; d=google.com; s=arc-20160816; b=hiy7XIoNiHK2mva0ZE8igy+PcySCnzvVgSfeV477toXcOJdILPq/9QI4AHn932JYmX JDEYtgxKZ2ShOIB/u4F9EeTi69SPFx3/0fMKp7DjfXmT3eviDye7JvVNFeMqP3PIVGX0 OPdpjQKna2UoJ+Q930H6pFfnj10k1x2CllDfe8S8P1mzK3aFb5TFvVLH+CKTgqboyNBh CfnBaiPWQny43xlIrFWj1IwyadKLNgxOpgA5uR8D3AqBtFVX0wWpGU24Ma6L7KIi7ebl IJgqlWEEA4rM89tyjfXI2SFCfxE09WfYWG5QPbw9bvE5ADYG90A6IltXfFP22CTkS276 so5w== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:user-agent:in-reply-to:content-disposition :mime-version:references:message-id:subject:cc:to:from:date; bh=OaFlMixzjLnX4BshRPNXy/MtI74lCqKyuk5jCgNllz8=; b=EPygvh+IgkZPJnCqSMZgcJ3wiLLWMBk3OXHmi83z/v9nojzry5GNMUKIl65wxVPK+h b2MVf6xP00t97K4GG58QECPa2dQ1sgnElfVOREOk905weUVE52rlPK849CGgXWLeNoKV P7B5C0niCc93Yl9X9gFuxXwPK7JlY+MjycS01sp4RjOvr6gCnX+l7JkcIKLypW/qkW8A 0Jl7pZDTcnfTPLMlNWiBoRZVtpb/Q2ZFTnIE7G8+tsLubN2qtRHRD5yWggFX3usi45sO gE4W3JBKqy/uGupfqK+W8A4VBlJXcH/U0YLxQcQLV9spnJptH/ezUVGqAxHNd6k+pN4j rpgQ== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id y21si171971edc.301.2021.04.14.10.30.42; Wed, 14 Apr 2021 10:31:05 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1350607AbhDNPmN (ORCPT + 99 others); Wed, 14 Apr 2021 11:42:13 -0400 Received: from verein.lst.de ([213.95.11.211]:59351 "EHLO verein.lst.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1350566AbhDNPmK (ORCPT ); Wed, 14 Apr 2021 11:42:10 -0400 Received: by verein.lst.de (Postfix, from userid 2407) id 4840368C7B; Wed, 14 Apr 2021 17:41:41 +0200 (CEST) Date: Wed, 14 Apr 2021 17:41:41 +0200 From: Christoph Hellwig To: Tianyu Lan Cc: kys@microsoft.com, haiyangz@microsoft.com, sthemmin@microsoft.com, wei.liu@kernel.org, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, x86@kernel.org, hpa@zytor.com, arnd@arndb.de, akpm@linux-foundation.org, gregkh@linuxfoundation.org, konrad.wilk@oracle.com, hch@lst.de, m.szyprowski@samsung.com, robin.murphy@arm.com, joro@8bytes.org, will@kernel.org, davem@davemloft.net, kuba@kernel.org, jejb@linux.ibm.com, martin.petersen@oracle.com, Tianyu Lan , iommu@lists.linux-foundation.org, linux-arch@vger.kernel.org, linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-scsi@vger.kernel.org, netdev@vger.kernel.org, vkuznets@redhat.com, thomas.lendacky@amd.com, brijesh.singh@amd.com, sunilmut@microsoft.com Subject: Re: [Resend RFC PATCH V2 04/12] HV: Add Write/Read MSR registers via ghcb Message-ID: <20210414154141.GB32045@lst.de> References: <20210414144945.3460554-1-ltykernel@gmail.com> <20210414144945.3460554-5-ltykernel@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210414144945.3460554-5-ltykernel@gmail.com> User-Agent: Mutt/1.5.17 (2007-11-01) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > +EXPORT_SYMBOL_GPL(hv_ghcb_msr_write); Just curious, who is going to use all these exports? These seems like extremely low-level functionality. Isn't there a way to build a more useful higher level API?