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Mon, 25 May 2020 20:50:08 +0000 (UTC) Received: from EX13D16EUB003.ant.amazon.com (10.43.166.99) by EX13MTAUEA002.ant.amazon.com (10.43.61.77) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Mon, 25 May 2020 20:50:08 +0000 Received: from 38f9d34ed3b1.ant.amazon.com (10.43.161.253) by EX13D16EUB003.ant.amazon.com (10.43.166.99) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Mon, 25 May 2020 20:49:59 +0000 Subject: Re: [PATCH v2 07/18] nitro_enclaves: Init misc device providing the ioctl interface To: Greg KH CC: , Anthony Liguori , Benjamin Herrenschmidt , Colm MacCarthaigh , Bjoern Doebel , David Woodhouse , Frank van der Linden , "Alexander Graf" , Martin Pohlack , Matt Wilson , Paolo Bonzini , Balbir Singh , Stefano Garzarella , "Stefan Hajnoczi" , Stewart Smith , "Uwe Dannowski" , , References: <20200522062946.28973-1-andraprs@amazon.com> <20200522062946.28973-8-andraprs@amazon.com> <20200522070708.GC771317@kroah.com> From: "Paraschiv, Andra-Irina" Message-ID: Date: Mon, 25 May 2020 23:49:50 +0300 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:68.0) Gecko/20100101 Thunderbird/68.8.0 MIME-Version: 1.0 In-Reply-To: <20200522070708.GC771317@kroah.com> Content-Language: en-US X-Originating-IP: [10.43.161.253] X-ClientProxiedBy: EX13D05UWB003.ant.amazon.com (10.43.161.26) To EX13D16EUB003.ant.amazon.com (10.43.166.99) Content-Type: text/plain; charset="utf-8"; format="flowed" Content-Transfer-Encoding: base64 Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org CgpPbiAyMi8wNS8yMDIwIDEwOjA3LCBHcmVnIEtIIHdyb3RlOgo+IE9uIEZyaSwgTWF5IDIyLCAy MDIwIGF0IDA5OjI5OjM1QU0gKzAzMDAsIEFuZHJhIFBhcmFzY2hpdiB3cm90ZToKPj4gK3N0YXRp YyBjaGFyICpuZV9jcHVzOwo+PiArbW9kdWxlX3BhcmFtKG5lX2NwdXMsIGNoYXJwLCAwNjQ0KTsK Pj4gK01PRFVMRV9QQVJNX0RFU0MobmVfY3B1cywgIjxjcHUtbGlzdD4gLSBDUFUgcG9vbCB1c2Vk IGZvciBOaXRybyBFbmNsYXZlcyIpOwo+IFRoaXMgaXMgbm90IHRoZSAxOTkwJ3MsIGRvbid0IHVz ZSBtb2R1bGUgcGFyYW1ldGVycyBpZiB5b3UgY2FuIGhlbHAgaXQuCj4gV2h5IGlzIHRoaXMgbmVl ZGVkLCBhbmQgd2hlcmUgaXMgaXQgZG9jdW1lbnRlZD8KClRoaXMgaXMgYSBDUFUgcG9vbCB0aGF0 IGNhbiBiZSBzZXQgYnkgdGhlIHJvb3QgdXNlciBhbmQgdGhhdCBpbmNsdWRlcyAKQ1BVcyBzZXQg YXNpZGUgdG8gYmUgdXNlZCBmb3IgdGhlIGVuY2xhdmUocykgc2V0dXA7IHRoZXNlIENQVXMgYXJl IApvZmZsaW5lZC4gRnJvbSB0aGlzIENQVSBwb29sLCB0aGUga2VybmVsIGxvZ2ljIGNob29zZXMg dGhlIENQVXMgdGhhdCBhcmUgCnNldCBmb3IgdGhlIGNyZWF0ZWQgZW5jbGF2ZShzKS4KClRoZSBj cHUtbGlzdCBmb3JtYXQgaXMgbWF0Y2hpbmcgdGhlIHNhbWUgdGhhdCBpcyBkb2N1bWVudGVkIGhl cmU6CgpodHRwczovL3d3dy5rZXJuZWwub3JnL2RvYy9odG1sL2xhdGVzdC9hZG1pbi1ndWlkZS9r ZXJuZWwtcGFyYW1ldGVycy5odG1sCgpJJ3ZlIGFsc28gdGhvdWdodCBvZiBoYXZpbmcgYSBzeXNm cyBlbnRyeSBmb3IgdGhlIHNldHVwIG9mIHRoaXMgZW5jbGF2ZSAKQ1BVIHBvb2wuCgo+Cj4+ICsv KiBDUFUgcG9vbCB1c2VkIGZvciBOaXRybyBFbmNsYXZlcy4gKi8KPj4gK3N0cnVjdCBuZV9jcHVf cG9vbCB7Cj4+ICsJLyogQXZhaWxhYmxlIENQVXMgaW4gdGhlIHBvb2wuICovCj4+ICsJY3B1bWFz a192YXJfdCBhdmFpbDsKPj4gKwlzdHJ1Y3QgbXV0ZXggbXV0ZXg7Cj4+ICt9Owo+PiArCj4+ICtz dGF0aWMgc3RydWN0IG5lX2NwdV9wb29sIG5lX2NwdV9wb29sOwo+PiArCj4+ICtzdGF0aWMgaW50 IG5lX29wZW4oc3RydWN0IGlub2RlICpub2RlLCBzdHJ1Y3QgZmlsZSAqZmlsZSkKPj4gK3sKPj4g KwlyZXR1cm4gMDsKPj4gK30KPiBJZiBvcGVuIGRvZXMgbm90aGluZywganVzdCBkb24ndCBldmVu IHByb3ZpZGUgaXQuCgpJIHJlbW92ZWQgdGhpcyBhbmQgb3RoZXIgZmlsZSBvcHMgb2NjdXJyZW5j ZXMgdGhhdCBkbyBub3RoaW5nIGZvciBub3cuCgo+Cj4+ICsKPj4gK3N0YXRpYyBsb25nIG5lX2lv Y3RsKHN0cnVjdCBmaWxlICpmaWxlLCB1bnNpZ25lZCBpbnQgY21kLCB1bnNpZ25lZCBsb25nIGFy ZykKPj4gK3sKPj4gKwlzd2l0Y2ggKGNtZCkgewo+PiArCj4+ICsJZGVmYXVsdDoKPj4gKwkJcmV0 dXJuIC1FTk9UVFk7Cj4+ICsJfQo+PiArCj4+ICsJcmV0dXJuIDA7Cj4+ICt9Cj4gU2FtZSBmb3Ig aW9jdGwuCgpUaGlzIGxvZ2ljIGlzIGNvbXBsZXRlZCBpbiB0aGUgbmV4dCBwYXRjaCBpbiB0aGUg c2VyaWVzLgoKPgo+PiArCj4+ICtzdGF0aWMgaW50IG5lX3JlbGVhc2Uoc3RydWN0IGlub2RlICpp bm9kZSwgc3RydWN0IGZpbGUgKmZpbGUpCj4+ICt7Cj4+ICsJcmV0dXJuIDA7Cj4+ICt9Cj4gU2Ft ZSBmb3IgcmVsZWFzZS4KCkRvbmUsIEkgcmVtb3ZlZCBpdCBmb3Igbm93LgoKPgo+PiArCj4+ICtz dGF0aWMgY29uc3Qgc3RydWN0IGZpbGVfb3BlcmF0aW9ucyBuZV9mb3BzID0gewo+PiArCS5vd25l cgkJPSBUSElTX01PRFVMRSwKPj4gKwkubGxzZWVrCQk9IG5vb3BfbGxzZWVrLAo+PiArCS51bmxv Y2tlZF9pb2N0bAk9IG5lX2lvY3RsLAo+PiArCS5vcGVuCQk9IG5lX29wZW4sCj4+ICsJLnJlbGVh c2UJPSBuZV9yZWxlYXNlLAo+PiArfTsKPj4gKwo+PiArc3RydWN0IG1pc2NkZXZpY2UgbmVfbWlz Y2RldmljZSA9IHsKPj4gKwkubWlub3IJPSBNSVNDX0RZTkFNSUNfTUlOT1IsCj4+ICsJLm5hbWUJ PSBORV9ERVZfTkFNRSwKPj4gKwkuZm9wcwk9ICZuZV9mb3BzLAo+PiArCS5tb2RlCT0gMDY2MCwK Pj4gK307Cj4+ICsKPj4gK3N0YXRpYyBpbnQgX19pbml0IG5lX2luaXQodm9pZCkKPj4gK3sKPj4g Kwl1bnNpZ25lZCBpbnQgY3B1ID0gMDsKPj4gKwl1bnNpZ25lZCBpbnQgY3B1X3NpYmxpbmcgPSAw Owo+PiArCWludCByYyA9IC1FSU5WQUw7Cj4+ICsKPj4gKwltZW1zZXQoJm5lX2NwdV9wb29sLCAw LCBzaXplb2YobmVfY3B1X3Bvb2wpKTsKPiBXaHkgZGlkIHlvdSBqdXN0IHNldCBhIHN0cnVjdHVy ZSB0byAwIHRoYXQgd2FzIGFscmVhZHkgaW5pdGlhbGl6ZWQgYnkKPiB0aGUgc3lzdGVtIHRvIDA/ ICBBcmUgeW91IHN1cmUgYWJvdXQgdGhpcz8KClRydWUsIHRoaXMgaXMgbm90IG5lZWRlZC4gUmVt b3ZlZCB0aGUgbWVtc2V0KCkgY2FsbC4KCj4KPj4gKwo+PiArCWlmICghemFsbG9jX2NwdW1hc2tf dmFyKCZuZV9jcHVfcG9vbC5hdmFpbCwgR0ZQX0tFUk5FTCkpCj4+ICsJCXJldHVybiAtRU5PTUVN Owo+PiArCj4+ICsJbXV0ZXhfaW5pdCgmbmVfY3B1X3Bvb2wubXV0ZXgpOwo+PiArCj4+ICsJcmMg PSBjcHVsaXN0X3BhcnNlKG5lX2NwdXMsIG5lX2NwdV9wb29sLmF2YWlsKTsKPj4gKwlpZiAocmMg PCAwKSB7Cj4+ICsJCXByX2Vycl9yYXRlbGltaXRlZChORSAiRXJyb3IgaW4gY3B1bGlzdCBwYXJz ZSBbcmM9JWRdXG4iLCByYyk7Cj4gQWdhaW4sIGRyb3AgYWxsIHJhdGVsaW1pdGVkIHN0dWZmIHBs ZWFzZS4KClVwZGF0ZWQgdG8gcHJfZXJyKCkuCgpUaGFuayB5b3UuCgpBbmRyYQoKCgpBbWF6b24g RGV2ZWxvcG1lbnQgQ2VudGVyIChSb21hbmlhKSBTLlIuTC4gcmVnaXN0ZXJlZCBvZmZpY2U6IDI3 QSBTZi4gTGF6YXIgU3RyZWV0LCBVQkM1LCBmbG9vciAyLCBJYXNpLCBJYXNpIENvdW50eSwgNzAw MDQ1LCBSb21hbmlhLiBSZWdpc3RlcmVkIGluIFJvbWFuaWEuIFJlZ2lzdHJhdGlvbiBudW1iZXIg SjIyLzI2MjEvMjAwNS4K