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=-4.4 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 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 400D4C432BE for ; Fri, 30 Jul 2021 02:53:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1FEFD60FE7 for ; Fri, 30 Jul 2021 02:53:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230165AbhG3CxG (ORCPT ); Thu, 29 Jul 2021 22:53:06 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40618 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229542AbhG3CxE (ORCPT ); Thu, 29 Jul 2021 22:53:04 -0400 Received: from mail-pj1-x1029.google.com (mail-pj1-x1029.google.com [IPv6:2607:f8b0:4864:20::1029]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 909F3C061765; Thu, 29 Jul 2021 19:52:59 -0700 (PDT) Received: by mail-pj1-x1029.google.com with SMTP id l19so13123269pjz.0; Thu, 29 Jul 2021 19:52:59 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=bmL4SQ8GAZJWK3xApvq+PZaab/7COKw/aR8FnJTkZ8A=; b=NAhocIP4f3vAt+HHEuF7oFkro+lh/6vEAuGcefhg6XueHZFW/VgAw1rUNxuPFA9NmR cmXx+ceLZex9nGJ0OyzZaxsYsT8tiRb1jRyPL71vgLtSWLPo0cCqvQ2qriDvy8CpQssj viNqrboexe+B/LVVnnduOrHj946GTrR2N6htuF3Da/GGsbOKkj/XSoD3hUHgJvjwaB5p T3Mh0d9xRtStBYG2xEqHf2hhw7W3QR/YGkGCbpjg9hYVaJSISM4slgqWraPF6pZEHZNm jukHYbtabQpZEinKjbGFHZgXMHh/LOo9XYtuFBdeFaYM0POV1AQF6Po3lzHo4DXqdZqC RNSA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=bmL4SQ8GAZJWK3xApvq+PZaab/7COKw/aR8FnJTkZ8A=; b=BxY6GLIvDAhhB/d/w4O2cgNVXG2HwWRr2NHWKwirZGPj082T0m9rr9Cw0oqEe01K7q //x2eiRzICqr6cY/7fXbSeNQCHcxih5NOpbv09scgntHcXJ9KDvrl7flac5sXdS7siVF x2iFbgeXqMNl9Pqnr5s/P8hXvJYrXfpAuVVzjYuaFdNLQOUPokUzXRbu2KTnMU/1PtYV 5Gjpgd16tTiBGx8rzin0JG6RckukwGHZNNrcLabWIiUnxcz+xh3E2BtbJE4cEevPiD0g 06SS3MZS4WO5dBLV4+jh78JL8HqAKndrC2RI0OFFBL5F8B8cZPryty0nS3o7BBPAaggH 1NUw== X-Gm-Message-State: AOAM533Xw4nqIh5Vka3CyyZu1b970O1aJyBqslC//jI7RIBqeEVvJiF8 cFOCzMCF9fpnazIxMh+t6tU= X-Google-Smtp-Source: ABdhPJyyZoBDWV7ZCj8Ji9VpActKffc9EXcufc2IzXROiuNMi/ja4nm1BshkPIm0WrFthtY+V0e3wQ== X-Received: by 2002:a17:90a:1109:: with SMTP id d9mr575516pja.183.1627613579170; Thu, 29 Jul 2021 19:52:59 -0700 (PDT) Received: from ?IPv6:2404:f801:0:5:8000::4b1? ([2404:f801:9000:18:efec::4b1]) by smtp.gmail.com with ESMTPSA id l10sm154977pjg.11.2021.07.29.19.52.45 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 29 Jul 2021 19:52:58 -0700 (PDT) Subject: Re: [PATCH 03/13] x86/HV: Add new hvcall guest address host visibility support To: Dave Hansen , 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, x86@kernel.org, hpa@zytor.com, dave.hansen@linux.intel.com, luto@kernel.org, peterz@infradead.org, konrad.wilk@oracle.com, boris.ostrovsky@oracle.com, jgross@suse.com, sstabellini@kernel.org, joro@8bytes.org, will@kernel.org, davem@davemloft.net, kuba@kernel.org, jejb@linux.ibm.com, martin.petersen@oracle.com, arnd@arndb.de, hch@lst.de, m.szyprowski@samsung.com, robin.murphy@arm.com, thomas.lendacky@amd.com, brijesh.singh@amd.com, ardb@kernel.org, Tianyu.Lan@microsoft.com, rientjes@google.com, martin.b.radev@gmail.com, akpm@linux-foundation.org, rppt@kernel.org, kirill.shutemov@linux.intel.com, aneesh.kumar@linux.ibm.com, krish.sadhukhan@oracle.com, saravanand@fb.com, xen-devel@lists.xenproject.org, pgonda@google.com, david@redhat.com, keescook@chromium.org, hannes@cmpxchg.org, sfr@canb.auug.org.au, michael.h.kelley@microsoft.com Cc: 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, anparri@microsoft.com References: <20210728145232.285861-1-ltykernel@gmail.com> <20210728145232.285861-4-ltykernel@gmail.com> <0d956a05-7d24-57a0-f4a9-dccc849b52fc@gmail.com> <8df2845d-ee90-56d0-1228-adebb103ec37@gmail.com> <7a2ddcca-e249-ba63-8709-e355fcef2d41@intel.com> From: Tianyu Lan Message-ID: Date: Fri, 30 Jul 2021 10:52:43 +0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.12.0 MIME-Version: 1.0 In-Reply-To: <7a2ddcca-e249-ba63-8709-e355fcef2d41@intel.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 7/30/2021 12:05 AM, Dave Hansen wrote: > On 7/29/21 8:02 AM, Tianyu Lan wrote: >>> >> >> There is x86_hyper_type to identify hypervisor type and we may check >> this variable after checking X86_FEATURE_HYPERVISOR. >> >> static inline bool hv_is_isolation_supported(void) >> { >>     if (!cpu_feature_enabled(X86_FEATURE_HYPERVISOR)) >>         return 0; >> >>         if (x86_hyper_type != X86_HYPER_MS_HYPERV) >>                 return 0; >> >>     // out of line function call: >>     return __hv_is_isolation_supported(); >> } > > Looks fine. You just might want to use this existing helper: > > static inline bool hypervisor_is_type(enum x86_hypervisor_type type) > { > return x86_hyper_type == type; > } > Yes,thanks for suggestion and will update in the next version. 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=-2.2 required=3.0 tests=BAYES_00,DKIM_ADSP_CUSTOM_MED, DKIM_INVALID,DKIM_SIGNED,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 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 3D1E5C4338F for ; Fri, 30 Jul 2021 02:53:05 +0000 (UTC) Received: from smtp2.osuosl.org (smtp2.osuosl.org [140.211.166.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id CE36560FED for ; Fri, 30 Jul 2021 02:53:04 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org CE36560FED Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=lists.linux-foundation.org Received: from localhost (localhost [127.0.0.1]) by smtp2.osuosl.org (Postfix) with ESMTP id 7C90F4022D; Fri, 30 Jul 2021 02:53:04 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp2.osuosl.org ([127.0.0.1]) by localhost (smtp2.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id psK9uELlH2oB; Fri, 30 Jul 2021 02:53:03 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by smtp2.osuosl.org (Postfix) with ESMTPS id 2392B400BE; Fri, 30 Jul 2021 02:53:03 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id D3ABCC001A; Fri, 30 Jul 2021 02:53:02 +0000 (UTC) Received: from smtp4.osuosl.org (smtp4.osuosl.org [IPv6:2605:bc80:3010::137]) by lists.linuxfoundation.org (Postfix) with ESMTP id E1FE6C000E for ; Fri, 30 Jul 2021 02:53:01 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp4.osuosl.org (Postfix) with ESMTP id C8702406A9 for ; Fri, 30 Jul 2021 02:53:01 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Authentication-Results: smtp4.osuosl.org (amavisd-new); dkim=pass (2048-bit key) header.d=gmail.com Received: from smtp4.osuosl.org ([127.0.0.1]) by localhost (smtp4.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id X_hpA7Q1nIyB for ; Fri, 30 Jul 2021 02:52:59 +0000 (UTC) X-Greylist: whitelisted by SQLgrey-1.8.0 Received: from mail-pj1-x1031.google.com (mail-pj1-x1031.google.com [IPv6:2607:f8b0:4864:20::1031]) by smtp4.osuosl.org (Postfix) with ESMTPS id AEE1D4067B for ; Fri, 30 Jul 2021 02:52:59 +0000 (UTC) Received: by mail-pj1-x1031.google.com with SMTP id ca5so12994499pjb.5 for ; Thu, 29 Jul 2021 19:52:59 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=bmL4SQ8GAZJWK3xApvq+PZaab/7COKw/aR8FnJTkZ8A=; b=NAhocIP4f3vAt+HHEuF7oFkro+lh/6vEAuGcefhg6XueHZFW/VgAw1rUNxuPFA9NmR cmXx+ceLZex9nGJ0OyzZaxsYsT8tiRb1jRyPL71vgLtSWLPo0cCqvQ2qriDvy8CpQssj viNqrboexe+B/LVVnnduOrHj946GTrR2N6htuF3Da/GGsbOKkj/XSoD3hUHgJvjwaB5p T3Mh0d9xRtStBYG2xEqHf2hhw7W3QR/YGkGCbpjg9hYVaJSISM4slgqWraPF6pZEHZNm jukHYbtabQpZEinKjbGFHZgXMHh/LOo9XYtuFBdeFaYM0POV1AQF6Po3lzHo4DXqdZqC RNSA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=bmL4SQ8GAZJWK3xApvq+PZaab/7COKw/aR8FnJTkZ8A=; b=nnW0Lmc1uUi76WW63PNoLBx8H6mWVHJBj+pWaj8WUhP2k2DceAjwMiAE0/OyQHVt5S T8xiYwXTMxhiHOUCsejl1qv7vE9fTa6cXbG2fxOoGnWz4GoMDJ1PZBrws/EykXmC1IO+ ReKIdudcvMmBI8XFHX/eLd4JsZWq+UMHEG9etY8FmfMf5e2qinYUkQKbvyqmFrec5Wzx T/VWYxiklQRyXmOnWBUSYWF6b3zFz52GsyBkdcbKnKx7kzrfMq063pp8hEdVTs3ctkuq JgBUcidmRyvs1fUEEegVVd0+TWl58IvKQyI8mNPznDSRkP5ew/fg9sz6aTHoFGZL2WsD Up+g== X-Gm-Message-State: AOAM530/q/9+libLg4THKnMW5jlIeLhiqE2RGAQlnywR8nSJE9YwU4o8 Q6VMkbR51/kI8vPyBNMdglc= X-Google-Smtp-Source: ABdhPJyyZoBDWV7ZCj8Ji9VpActKffc9EXcufc2IzXROiuNMi/ja4nm1BshkPIm0WrFthtY+V0e3wQ== X-Received: by 2002:a17:90a:1109:: with SMTP id d9mr575516pja.183.1627613579170; Thu, 29 Jul 2021 19:52:59 -0700 (PDT) Received: from ?IPv6:2404:f801:0:5:8000::4b1? ([2404:f801:9000:18:efec::4b1]) by smtp.gmail.com with ESMTPSA id l10sm154977pjg.11.2021.07.29.19.52.45 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 29 Jul 2021 19:52:58 -0700 (PDT) Subject: Re: [PATCH 03/13] x86/HV: Add new hvcall guest address host visibility support To: Dave Hansen , 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, x86@kernel.org, hpa@zytor.com, dave.hansen@linux.intel.com, luto@kernel.org, peterz@infradead.org, konrad.wilk@oracle.com, boris.ostrovsky@oracle.com, jgross@suse.com, sstabellini@kernel.org, joro@8bytes.org, will@kernel.org, davem@davemloft.net, kuba@kernel.org, jejb@linux.ibm.com, martin.petersen@oracle.com, arnd@arndb.de, hch@lst.de, m.szyprowski@samsung.com, robin.murphy@arm.com, thomas.lendacky@amd.com, brijesh.singh@amd.com, ardb@kernel.org, Tianyu.Lan@microsoft.com, rientjes@google.com, martin.b.radev@gmail.com, akpm@linux-foundation.org, rppt@kernel.org, kirill.shutemov@linux.intel.com, aneesh.kumar@linux.ibm.com, krish.sadhukhan@oracle.com, saravanand@fb.com, xen-devel@lists.xenproject.org, pgonda@google.com, david@redhat.com, keescook@chromium.org, hannes@cmpxchg.org, sfr@canb.auug.org.au, michael.h.kelley@microsoft.com References: <20210728145232.285861-1-ltykernel@gmail.com> <20210728145232.285861-4-ltykernel@gmail.com> <0d956a05-7d24-57a0-f4a9-dccc849b52fc@gmail.com> <8df2845d-ee90-56d0-1228-adebb103ec37@gmail.com> <7a2ddcca-e249-ba63-8709-e355fcef2d41@intel.com> From: Tianyu Lan Message-ID: Date: Fri, 30 Jul 2021 10:52:43 +0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.12.0 MIME-Version: 1.0 In-Reply-To: <7a2ddcca-e249-ba63-8709-e355fcef2d41@intel.com> Content-Language: en-US Cc: linux-arch@vger.kernel.org, linux-hyperv@vger.kernel.org, linux-scsi@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org, anparri@microsoft.com, vkuznets@redhat.com X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: base64 Content-Type: text/plain; charset="utf-8"; Format="flowed" Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" T24gNy8zMC8yMDIxIDEyOjA1IEFNLCBEYXZlIEhhbnNlbiB3cm90ZToKPiBPbiA3LzI5LzIxIDg6 MDIgQU0sIFRpYW55dSBMYW4gd3JvdGU6Cj4+Pgo+Pgo+PiBUaGVyZSBpcyB4ODZfaHlwZXJfdHlw ZSB0byBpZGVudGlmeSBoeXBlcnZpc29yIHR5cGUgYW5kIHdlIG1heSBjaGVjawo+PiB0aGlzIHZh cmlhYmxlIGFmdGVyIGNoZWNraW5nIFg4Nl9GRUFUVVJFX0hZUEVSVklTT1IuCj4+Cj4+IHN0YXRp YyBpbmxpbmUgYm9vbCBodl9pc19pc29sYXRpb25fc3VwcG9ydGVkKHZvaWQpCj4+IHsKPj4gIMKg wqDCoMKgaWYgKCFjcHVfZmVhdHVyZV9lbmFibGVkKFg4Nl9GRUFUVVJFX0hZUEVSVklTT1IpKQo+ PiAgwqDCoMKgwqDCoMKgwqAgcmV0dXJuIDA7Cj4+Cj4+ICDCoMKgwqDCoMKgwqDCoCBpZiAoeDg2 X2h5cGVyX3R5cGUgIT0gWDg2X0hZUEVSX01TX0hZUEVSVikKPj4gIMKgwqDCoMKgwqDCoMKgwqDC oMKgwqDCoMKgwqDCoCByZXR1cm4gMDsKPj4KPj4gIMKgwqDCoMKgLy8gb3V0IG9mIGxpbmUgZnVu Y3Rpb24gY2FsbDoKPj4gIMKgwqDCoMKgcmV0dXJuIF9faHZfaXNfaXNvbGF0aW9uX3N1cHBvcnRl ZCgpOwo+PiB9Cj4gCj4gTG9va3MgZmluZS4gIFlvdSBqdXN0IG1pZ2h0IHdhbnQgdG8gdXNlIHRo aXMgZXhpc3RpbmcgaGVscGVyOgo+IAo+IHN0YXRpYyBpbmxpbmUgYm9vbCBoeXBlcnZpc29yX2lz X3R5cGUoZW51bSB4ODZfaHlwZXJ2aXNvcl90eXBlIHR5cGUpCj4gewo+ICAgICAgICAgIHJldHVy biB4ODZfaHlwZXJfdHlwZSA9PSB0eXBlOwo+IH0KPiAKClllcyx0aGFua3MgZm9yIHN1Z2dlc3Rp b24gYW5kIHdpbGwgdXBkYXRlIGluIHRoZSBuZXh0IHZlcnNpb24uCl9fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCmlvbW11IG1haWxpbmcgbGlzdAppb21tdUBs aXN0cy5saW51eC1mb3VuZGF0aW9uLm9yZwpodHRwczovL2xpc3RzLmxpbnV4Zm91bmRhdGlvbi5v cmcvbWFpbG1hbi9saXN0aW5mby9pb21tdQ==