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Thu, 3 Jun 2021 19:53:53 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org 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 n47D5G2RcLnz; Thu, 3 Jun 2021 19:53:52 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.8.0 X-Greylist: domain auto-whitelisted by SQLgrey-1.8.0 Received: from mga18.intel.com (mga18.intel.com [134.134.136.126]) by smtp4.osuosl.org (Postfix) with ESMTPS id 6DF2C401CF; Thu, 3 Jun 2021 19:53:52 +0000 (UTC) IronPort-SDR: Ha4/aNhUjh9dLGHEqhpx5hq3ORFhUTngZoFbL6fk37c8VKQ+9MG+DaioNHmTj67K8xCeFIGqnR sEQSqFfTsHxA== X-IronPort-AV: E=McAfee;i="6200,9189,10004"; a="191474598" X-IronPort-AV: E=Sophos;i="5.83,246,1616482800"; d="scan'208";a="191474598" Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 03 Jun 2021 12:53:45 -0700 IronPort-SDR: j796NHDs2Zozxq/wBHEuvMXvyPgtLyCvrhm5igEiL3IiR3qXnYzpqEuyF5uad7fplBhS/dqAsL 5gvTbni69t6A== X-IronPort-AV: E=Sophos;i="5.83,246,1616482800"; d="scan'208";a="550819682" Received: from akleen-mobl1.amr.corp.intel.com (HELO [10.209.7.237]) ([10.209.7.237]) by fmsmga001-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 03 Jun 2021 12:53:44 -0700 Subject: Re: [PATCH v1 1/8] virtio: Force only split mode with protected guest To: Andy Lutomirski , 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: Andi Kleen Message-ID: <3159e1f4-77cd-e071-b6f2-a2bb83cfc69a@linux.intel.com> Date: Thu, 3 Jun 2021 12:53:43 -0700 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.10.2 MIME-Version: 1.0 In-Reply-To: <2b2dec75-a0c1-4013-ac49-a49f30d5ac3c@www.fastmail.com> Content-Language: en-US Cc: jasowang@redhat.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 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" Cj4gVGVsbCB0aGF0IHRvIGV2ZXJ5IGNyeXB0byBkb3duZ3JhZGUgYXR0YWNrIGV2ZXIuCgpUaGF0 J3MgZXhhY3RseSB3aGF0IHRoaXMgcGF0Y2ggYWRkcmVzc2VzLgoKPgo+IEkgc2VlIHR3byBjcmVk aWJsZSBzb2x1dGlvbnM6Cj4KPiAxLiBBY3R1YWxseSBoYXJkZW4gdGhlIHZpcnRpbyBkcml2ZXIu ClRoYXQncyBleGFjdGx5IHdoYXQgdGhpcyBwYXRjaGtpdCwgYW5kIHRoZSBhbHRlcm5hdGl2ZSBh cHByb2FjaGVzLCBsaWtlIApKYXNvbidzLCBhcmUgZG9pbmcuCj4KPiAyLiBIYXZlIGEgbmV3IHZp cnRpby1tb2Rlcm4gZHJpdmVyIGFuZCB1c2UgaXQgZm9yIG1vZGVybiB1c2UgY2FzZXMuIE1heWJl IHJlbmFtZSB0aGUgb2xkIGRyaXZlciB2aXJ0aW8tbGVnYWN5IG9yIHZpcnRpby1pbnNlY3VyZS4g IFRoZXkgY2FuIHNoYXJlIGNvZGUuCgpJbiBtb3N0IHVzZSBjYXNlcyB0aGUgbGVnYWN5IGRyaXZl ciBpcyBub3QgaW5zZWN1cmUgYmVjYXVzZSB0aGVyZSBpcyBubyAKbWVtb3J5IHByb3RlY3Rpb24g YW55d2F5cy4KClllcyBtYXliZSBzdWNoIGEgc3BsaXQgd291bGQgYmUgYSBnb29kIGlkZWEgZm9y IG1haW50ZW5hbmNlIGFuZCBtYXliZSAKcGVyZm9ybWFuY2UgcmVhc29ucywgYnV0IGF0IGxlYXN0 IGZyb20gdGhlIHNlY3VyaXR5IHBlcnNwZWN0aXZlIEkgZG9uJ3QgCnNlZSBhbnkgbmVlZCBmb3Ig aXQuCgo+Cj4gQW5vdGhlciBzbmFnIHlvdSBtYXkgaGl0OiB2aXJ0aW/igJlzIGhldXJpc3RpYyBm b3Igd2hldGhlciB0byB1c2UgcHJvcGVyIERNQSBvcHMgb3IgdG8gYnlwYXNzIHRoZW0gaXMgYSBn aWFudCBrbHVkZ2UuIEnigJltIHZlcnkgc2xpZ2h0bHkgb3B0aW1pc3RpYyB0aGF0IGdldHRpbmcg dGhlIGhldXJpc3RpYyB3cm9uZyB3aWxsIG1ha2UgdGhlIGRyaXZlciBmYWlsIHRvIG9wZXJhdGUg YnV0IHdvbuKAmXQgYWxsb3cgdGhlIGhvc3QgdG8gdGFrZSBvdmVyIHRoZSBndWVzdCwgYnV0IEni gJltIG5vdCByZWFsbHkgY29udmluY2VkLiBBbmQgSSB3cm90ZSB0aGF0IGNvZGUhICBBIHZpcnRp by1tb2Rlcm4gbW9kZSBwcm9iYWJseSBzaG91bGQgbm90IGhhdmUgYSBoZXVyaXN0aWMsIGFuZCB0 aGUgdmFyaW91cyBpb21tdS1ieXBhc3NpbmcgbW9kZXMgc2hvdWxkIGJlIGZpeGVkIHRvIHdvcmsg YXQgdGhlIGJ1cyBsZXZlbCwgbm90IHRoZSBkZXZpY2UgbGV2ZWwKClREWCBhbmQgU0VWIHVzZSB0 aGUgYXJjaCBob29rIHRvIGVuZm9yY2UgRE1BIEFQSSwgc28gdGhhdCBwYXJ0IGlzIGFsc28gCnNv bHZlZC4KCgotQW5kaQoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX18KaW9tbXUgbWFpbGluZyBsaXN0CmlvbW11QGxpc3RzLmxpbnV4LWZvdW5kYXRpb24ub3Jn Cmh0dHBzOi8vbGlzdHMubGludXhmb3VuZGF0aW9uLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2lvbW11