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Thu, 03 Jun 2021 18:22:51 -0700 (PDT) X-Google-Smtp-Source: ABdhPJy8I13DZmKGfIc2huzbd5KLYaSyAe/mhYmV3rOnMwUy40nEmTkBCn9htxKDX0fkN/UX8S97Dg== X-Received: by 2002:aa7:8a5a:0:b029:2ec:7134:7540 with SMTP id n26-20020aa78a5a0000b02902ec71347540mr2069623pfa.66.1622769771073; Thu, 03 Jun 2021 18:22:51 -0700 (PDT) Received: from wangxiaodeMacBook-Air.local ([209.132.188.80]) by smtp.gmail.com with ESMTPSA id k17sm232575pff.66.2021.06.03.18.22.47 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 03 Jun 2021 18:22:50 -0700 (PDT) Subject: Re: [PATCH v1 1/8] virtio: Force only split mode with protected guest To: Andy Lutomirski , Andi Kleen , mst@redhat.com References: <20210603004133.4079390-1-ak@linux.intel.com> <20210603004133.4079390-2-ak@linux.intel.com> <2b2dec75-a0c1-4013-ac49-a49f30d5ac3c@www.fastmail.com> From: Jason Wang Message-ID: <9e842353-fec7-667e-8b76-61dbb092f0d8@redhat.com> Date: Fri, 4 Jun 2021 09:22:45 +0800 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:78.0) Gecko/20100101 Thunderbird/78.10.2 MIME-Version: 1.0 In-Reply-To: <2b2dec75-a0c1-4013-ac49-a49f30d5ac3c@www.fastmail.com> Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=jasowang@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Language: en-US Cc: sathyanarayanan.kuppuswamy@linux.intel.com, the arch/x86 maintainers , Linux Kernel Mailing List , virtualization@lists.linux-foundation.org, iommu@lists.linux-foundation.org, Josh Poimboeuf , robin.murphy@arm.com, hch@lst.de, m.szyprowski@samsung.com X-BeenThere: virtualization@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Linux virtualization 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: virtualization-bounces@lists.linux-foundation.org Sender: "Virtualization" CuWcqCAyMDIxLzYvNCDkuIrljYgzOjMxLCBBbmR5IEx1dG9taXJza2kg5YaZ6YGTOgo+Cj4gT24g VGh1LCBKdW4gMywgMjAyMSwgYXQgMTE6MDAgQU0sIEFuZGkgS2xlZW4gd3JvdGU6Cj4+IE9uIDYv My8yMDIxIDEwOjMzIEFNLCBBbmR5IEx1dG9taXJza2kgd3JvdGU6Cj4+PiBPbiA2LzIvMjEgNTo0 MSBQTSwgQW5kaSBLbGVlbiB3cm90ZToKPj4+PiBPbmx5IGFsbG93IHNwbGl0IG1vZGUgd2hlbiBp biBhIHByb3RlY3RlZCBndWVzdC4gRm9sbG93b24KPj4+PiBwYXRjaGVzIGhhcmRlbiB0aGUgc3Bs aXQgbW9kZSBjb2RlIHBhdGhzLCBhbmQgd2UgZG9uJ3Qgd2FudAo+Pj4+IGFuIG1hbGljaW91cyBo b3N0IHRvIGZvcmNlIGFueXRoaW5nIGVsc2UuIEFsc28gZGlzYWxsb3cKPj4+PiBpbmRpcmVjdCBt b2RlIGZvciBzaW1pbGFyIHJlYXNvbnMuCj4+PiBJIHJlYWQgdGhpcyBhcyAidGhlIHZpcnRpbyBk cml2ZXIgaXMgYnVnZ3kuICBMZXQncyBkaXNhYmxlIG1vc3Qgb2YgdGhlCj4+PiBidWdneSBjb2Rl IGluIG9uZSBzcGVjaWFsIGNhc2UgaW4gd2hpY2ggd2UgbmVlZCBhIGRyaXZlciB3aXRob3V0IGJ1 Z3MuCj4+PiBJbiBhbGwgdGhlIG90aGVyIGNhc2VzIChlLmcuIGhhcmR3YXJlIHZpcnRpbyBkZXZp Y2UgY29ubmVjdGVkIG92ZXIKPj4+IFVTQi1DKSwgZHJpdmVyIGJ1Z3MgYXJlIHN0aWxsIGFsbG93 ZWQuIgo+PiBNeSB1bmRlcnN0YW5kaW5nIGlzIG1vc3Qgb2YgdGhlIG90aGVyIG1vZGVzIChleGNl cHQgZm9yIHNwbGl0IHdpdGgKPj4gc2VwYXJhdGUgZGVzY3JpcHRvcnMpIGFyZSBvYnNvbGV0ZSBh bmQganVzdCB0aGVyZSBmb3IgY29tcGF0aWJpbGl0eS4gQXMKPj4gbG9uZyBhcyB0aGV5J3JlIGRl cHJlY2F0ZWQgdGhleSB3b24ndCBoYXJtIGFueW9uZS4KPj4KPj4KPiBUZWxsIHRoYXQgdG8gZXZl cnkgY3J5cHRvIGRvd25ncmFkZSBhdHRhY2sgZXZlci4KPgo+IEkgc2VlIHR3byBjcmVkaWJsZSBz b2x1dGlvbnM6Cj4KPiAxLiBBY3R1YWxseSBoYXJkZW4gdGhlIHZpcnRpbyBkcml2ZXIuCj4KPiAy LiBIYXZlIGEgbmV3IHZpcnRpby1tb2Rlcm4gZHJpdmVyIGFuZCB1c2UgaXQgZm9yIG1vZGVybiB1 c2UgY2FzZXMuIE1heWJlIHJlbmFtZSB0aGUgb2xkIGRyaXZlciB2aXJ0aW8tbGVnYWN5IG9yIHZp cnRpby1pbnNlY3VyZS4gIFRoZXkgY2FuIHNoYXJlIGNvZGUuCgoKTm90ZSB0aGF0IHdlIGhhZCBh bHJlYWR5IHNwbGl0IGxlZ2FjeSBkcml2ZXIgb3V0IHdoaWNoIGNhbiBiZSB0dXJuZWQgb2ZmIAp2 aWEgS2NvbmZpZy4KCgo+Cj4gQW5vdGhlciBzbmFnIHlvdSBtYXkgaGl0OiB2aXJ0aW/igJlzIGhl dXJpc3RpYyBmb3Igd2hldGhlciB0byB1c2UgcHJvcGVyIERNQSBvcHMgb3IgdG8gYnlwYXNzIHRo ZW0gaXMgYSBnaWFudCBrbHVkZ2UuIEnigJltIHZlcnkgc2xpZ2h0bHkgb3B0aW1pc3RpYyB0aGF0 IGdldHRpbmcgdGhlIGhldXJpc3RpYyB3cm9uZyB3aWxsIG1ha2UgdGhlIGRyaXZlciBmYWlsIHRv IG9wZXJhdGUgYnV0IHdvbuKAmXQgYWxsb3cgdGhlIGhvc3QgdG8gdGFrZSBvdmVyIHRoZSBndWVz dCwgYnV0IEnigJltIG5vdCByZWFsbHkgY29udmluY2VkLiBBbmQgSSB3cm90ZSB0aGF0IGNvZGUh ICBBIHZpcnRpby1tb2Rlcm4gbW9kZSBwcm9iYWJseSBzaG91bGQgbm90IGhhdmUgYSBoZXVyaXN0 aWMsIGFuZCB0aGUgdmFyaW91cyBpb21tdS1ieXBhc3NpbmcgbW9kZXMgc2hvdWxkIGJlIGZpeGVk IHRvIHdvcmsgYXQgdGhlIGJ1cyBsZXZlbCwgbm90IHRoZSBkZXZpY2UgbGV2ZWwuCgoKSSByZW1l bWJlciB0aGVyZSdzIGEgdmVyeSBsb25nIGRpc2N1c3Npb24gYWJvdXQgdGhpcyBhbmQgcHJvYmFi bHkgCndpdGhvdXQgYW55IGNvbmNsdXNpb24uIEZvcnR1bmF0ZWx5LCB0aGUgbWFuYWdlbWVudCBs YXllciBoYXMgYmVlbiAKdGF1Z2h0IHRvIGVuZm9yY2UgVklSVElPX0ZfQUNDRVNTX1BMQVRGT1JN IGZvciBlbmNyeXB0ZWQgZ3Vlc3RzLgoKQSBwb3NzaWJsZSB3YXkgdG8gZml4IHRoaXMgaXMgd2l0 aG91dCBhbnkgY29uZmxpY3RzIGlzIHRvIG1hbmRhdGUgdGhlIApWSVJUSU9fRl9BQ0NFU1NfUExB VEZPUk0gaW4gdmVyc2lvbiAxLjIuCgpUaGFua3MKCgo+CgpfX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fXwpWaXJ0dWFsaXphdGlvbiBtYWlsaW5nIGxpc3QKVmly dHVhbGl6YXRpb25AbGlzdHMubGludXgtZm91bmRhdGlvbi5vcmcKaHR0cHM6Ly9saXN0cy5saW51 eGZvdW5kYXRpb24ub3JnL21haWxtYW4vbGlzdGluZm8vdmlydHVhbGl6YXRpb24=