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Tsirkin" , Jason Wang Subject: Re: [PATCH] virtio: acknowledge all features before access In-Reply-To: <20220117032429-mutt-send-email-mst@kernel.org> Organization: Red Hat GmbH References: <20220114200744.150325-1-mst@redhat.com> <20220117032429-mutt-send-email-mst@kernel.org> User-Agent: Notmuch/0.34 (https://notmuchmail.org) Date: Mon, 17 Jan 2022 13:38:42 +0100 Message-ID: <87mtjuv8od.fsf@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 Cc: Halil Pasic , linux-kernel@vger.kernel.org, stable@vger.kernel.org, virtualization@lists.linux-foundation.org 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-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: virtualization-bounces@lists.linux-foundation.org Sender: "Virtualization" T24gTW9uLCBKYW4gMTcgMjAyMiwgIk1pY2hhZWwgUy4gVHNpcmtpbiIgPG1zdEByZWRoYXQuY29t PiB3cm90ZToKCj4gT24gTW9uLCBKYW4gMTcsIDIwMjIgYXQgMDI6MzE6NDlQTSArMDgwMCwgSmFz b24gV2FuZyB3cm90ZToKPj4gCj4+IOWcqCAyMDIyLzEvMTUg5LiK5Y2INDowOSwgTWljaGFlbCBT LiBUc2lya2luIOWGmemBkzoKPj4gPiBAQCAtNDk1LDYgKzQ5NCwxMCBAQCBpbnQgdmlydGlvX2Rl dmljZV9yZXN0b3JlKHN0cnVjdCB2aXJ0aW9fZGV2aWNlICpkZXYpCj4+ID4gICAJLyogV2UgaGF2 ZSBhIGRyaXZlciEgKi8KPj4gPiAgIAl2aXJ0aW9fYWRkX3N0YXR1cyhkZXYsIFZJUlRJT19DT05G SUdfU19EUklWRVIpOwo+PiA+ICsJcmV0ID0gZGV2LT5jb25maWctPmZpbmFsaXplX2ZlYXR1cmVz KGRldik7Cj4+ID4gKwlpZiAocmV0KQo+PiA+ICsJCWdvdG8gZXJyOwo+PiAKPj4gCj4+IElzIHRo aXMgcGFydCBvZiBjb2RlIHJlbGF0ZWQ/Cj4+IAo+PiBUaGFua3MKPj4gCj4KPiBZZXMuIHZpcnRp b19maW5hbGl6ZV9mZWF0dXJlcyBubyBsb25nZXIgY2FsbHMgZGV2LT5jb25maWctPmZpbmFsaXpl X2ZlYXR1cmVzLgo+Cj4gSSB0aGluayB0aGUgZGV2LT5jb25maWctPmZpbmFsaXplX2ZlYXR1cmVz IGNhbGxiYWNrIGlzIGFjdHVhbGx5Cj4gYSBtaXNub21lciBub3csIGl0IGp1c3Qgc2VuZHMgdGhl IGZlYXR1cmVzIHRvIGRldmljZSwKPiBmaW5hbGl6ZSBpcyBGRUFUVVJFU19PSy4gUmVuYW1pbmcg dGhhdCBpcyBhIGJpZ2dlcgo+IHBhdGNoIHRob3VnaCwgYW5kIEknZCBsaWtlIHRoaXMgb25lIHRv IGJlIGNoZXJyeS1waWNrYWJsZQo+IHRvIHN0YWJsZS4KCkRvIHdlIHdhbnQgdG8gYWRkIGEgY29t bWVudCBiZWZvcmUgdGhlIGNhbGxzIHRvIC0+ZmluYWxpemVfZmVhdHVyZXMoKQooLyogd3JpdGUg ZmVhdHVyZXMgdG8gZGV2aWNlICovKSBhbmQgYWRhcHQgdGhlIGNvbW1lbnQgaW4gdmlydGlvX3Jp bmcuaD8KU2hvdWxkIHN0aWxsIGJlIHN0YWJsZS1mcmllbmRseSwgYW5kIGdpdmluZyB0aGUgY2Fs bGJhY2sgYSBiZXR0ZXIgbmFtZQpjYW4gYmUgYSBmb2xsb3ctdXAgcGF0Y2guCgo+Cj4+ID4gKwo+ PiA+ICAgCXJldCA9IHZpcnRpb19maW5hbGl6ZV9mZWF0dXJlcyhkZXYpOwo+PiA+ICAgCWlmIChy ZXQpCj4+ID4gICAJCWdvdG8gZXJyOwoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX18KVmlydHVhbGl6YXRpb24gbWFpbGluZyBsaXN0ClZpcnR1YWxpemF0aW9u QGxpc3RzLmxpbnV4LWZvdW5kYXRpb24ub3JnCmh0dHBzOi8vbGlzdHMubGludXhmb3VuZGF0aW9u Lm9yZy9tYWlsbWFuL2xpc3RpbmZvL3ZpcnR1YWxpemF0aW9u