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Tsirkin" To: Alvaro Karsz Subject: Re: [PATCH net] virtio-net: reject small vring sizes Message-ID: <20230423031308-mutt-send-email-mst@kernel.org> References: <20230417023911-mutt-send-email-mst@kernel.org> <20230417030713-mutt-send-email-mst@kernel.org> <20230417051816-mutt-send-email-mst@kernel.org> <20230417073830-mutt-send-email-mst@kernel.org> <20230417075645-mutt-send-email-mst@kernel.org> MIME-Version: 1.0 In-Reply-To: X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Disposition: inline Cc: "netdev@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "virtualization@lists.linux-foundation.org" , "edumazet@google.com" , "kuba@kernel.org" , "pabeni@redhat.com" , "davem@davemloft.net" 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" T24gU3VuLCBBcHIgMjMsIDIwMjMgYXQgMDY6NTE6NDZBTSArMDAwMCwgQWx2YXJvIEthcnN6IHdy b3RlOgo+ID4gWWVzIHRoYXQgbWFrZXMgc2Vuc2UsIGl0J3MgYXJjaGl0ZXR1cmFsLiBXZSBjYW4g ZGlzYWJsZSBjdHJsIHZxIHRob3VnaC4KPiAKPiBUaGUgcHJvYmxlbSBoZXJlIGlzIHRoYXQgd2Ug a25vdyB0aGUgdnJpbmcgc2l6ZSBhZnRlciBjYWxsaW5nIHZpcnRuZXRfZmluZF92cXMsIHNvIHRo ZSBudW1iZXIgb2YgVlFzIGFscmVhZHkgaW5jbHVkZXMgdGhlIGNvbnRyb2wgVlEuCj4gCj4gQWN0 dWFsbHksIG1hbnkgdmFyaWFibGVzL3NldHRpbmdzIHRoYXQgYXJlIGluaXRpYWxpemVkIGJlZm9y ZSB3ZSBjYWxsIHZpcnRuZXRfZmluZF92cXMgbWF5IG5lZWQgbW9kaWZpY2F0aW9ucyBpZiB3ZSB1 c2Ugc21hbGwgdnJpbmdzLgo+IEZvciBleGFtcGxlIGhhc19yc3NfaGFzaF9yZXBvcnQsIGhhc19y c3MsIGhkcl9sZW4gZXRjLi4KPiAKPiBXZSBjb3VsZCBoYXZlIGEgZml4dXAgZnVuY3Rpb24gdG8g Zml4IGV2ZXJ5dGhpbmcgYWZ0ZXIgd2UgZGlzY292ZXIgdGhhdCB3ZSBhcmUgdXNpbmcgc21hbGwg dnJpbmdzLCBidXQsIGhvbmVzdGx5LCBJIHRoaW5rIHRoYXQgdGhpcyB3aWxsIGJlIGhhcmQgdG8g bWFpbnRhaW4gaW4gdGhlIGZ1dHVyZSwgYW5kIEkgZG9uJ3QgbGlrZSB0aGlzIGFwcHJvYWNoIG11 Y2guCj4gCj4gVGhlIGlkZWFsIHRoaW5nIHdpbGwgYmUgdG8gZGlzY292ZXIgaWYgd2UgdXNlIHNt YWxsIHZyaW5ncyBpbiBwcm9iZSdzIGJlZ2lubmluZy4KPiAKPiBJJ20gbG9va2luZyBmb3IgYSB3 YXkgYXQgdGhlIG1vbWVudC4KCkhtbS4gSSB3YXMgd3JvbmcuIFRoZXJlIGlzIG5vIHdheSB0byBk aXNhYmxlIENWUSBmZWF0dXJlIGJpdC4KCjEuIFJlc2V0IHRoZSBkZXZpY2UuCjIuIFNldCB0aGUg QUNLTk9XTEVER0Ugc3RhdHVzIGJpdDogdGhlIGd1ZXN0IE9TIGhhcyBub3RpY2UgdGhlIGRldmlj ZS4KMy4gU2V0IHRoZSBEUklWRVIgc3RhdHVzIGJpdDogdGhlIGd1ZXN0IE9TIGtub3dzIGhvdyB0 byBkcml2ZSB0aGUgZGV2aWNlLgo0LiBSZWFkIGRldmljZSBmZWF0dXJlIGJpdHMsIGFuZCB3cml0 ZSB0aGUgc3Vic2V0IG9mIGZlYXR1cmUgYml0cyB1bmRlcnN0b29kIGJ5IHRoZSBPUyBhbmQgZHJp dmVyIHRvIHRoZQpkZXZpY2UuIER1cmluZyB0aGlzIHN0ZXAgdGhlIGRyaXZlciBNQVkgcmVhZCAo YnV0IE1VU1QgTk9UIHdyaXRlKSB0aGUgZGV2aWNlLXNwZWNpZmljIGNvbmZpZ3VyYXRpb24KZmll bGRzIHRvIGNoZWNrIHRoYXQgaXQgY2FuIHN1cHBvcnQgdGhlIGRldmljZSBiZWZvcmUgYWNjZXB0 aW5nIGl0Lgo1LiBTZXQgdGhlIEZFQVRVUkVTX09LIHN0YXR1cyBiaXQuIFRoZSBkcml2ZXIgTVVT VCBOT1QgYWNjZXB0IG5ldyBmZWF0dXJlIGJpdHMgYWZ0ZXIgdGhpcyBzdGVwLgo2LiBSZS1yZWFk IGRldmljZSBzdGF0dXMgdG8gZW5zdXJlIHRoZSBGRUFUVVJFU19PSyBiaXQgaXMgc3RpbGwgc2V0 OiBvdGhlcndpc2UsIHRoZSBkZXZpY2UgZG9lcyBub3QKc3VwcG9ydCBvdXIgc3Vic2V0IG9mIGZl YXR1cmVzIGFuZCB0aGUgZGV2aWNlIGlzIHVudXNhYmxlLgo3LiBQZXJmb3JtIGRldmljZS1zcGVj aWZpYyBzZXR1cCwgaW5jbHVkaW5nIGRpc2NvdmVyeSBvZiB2aXJ0cXVldWVzIGZvciB0aGUgZGV2 aWNlLCBvcHRpb25hbCBwZXItYnVzIHNldHVwLApyZWFkaW5nIGFuZCBwb3NzaWJseSB3cml0aW5n IHRoZSBkZXZpY2XigJlzIHZpcnRpbyBjb25maWd1cmF0aW9uIHNwYWNlLCBhbmQgcG9wdWxhdGlv biBvZiB2aXJ0cXVldWVzLgo4LiBTZXQgdGhlIERSSVZFUl9PSyBzdGF0dXMgYml0LiBBdCB0aGlz IHBvaW50IHRoZSBkZXZpY2UgaXMg4oCcbGl2ZeKAnS4KCgpTbyBmZWF0dXJlcyBhcmUgY29uZmly bWVkIGJlZm9yZSBmaW5kIHZxcy4KClRoZSByZXN0IG9mIHN0dWZmIGNhbiBwcm9iYWJseSBqdXN0 IGJlIG1vdmVkIHRvIGFmdGVyIGZpbmRfdnFzIHdpdGhvdXQKbXVjaCBwYWluLgoKU28gaWYgY3Zx IGlzIHRvbyBzbWFsbCB3ZSBjYW4gZWl0aGVyCi0gcHJvYmUgYnV0IGF2b2lkIHVzaW5nIGN2cQpv cgotIGZhaWwgcHJvYmUKCi0tIApNU1QKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fClZpcnR1YWxpemF0aW9uIG1haWxpbmcgbGlzdApWaXJ0dWFsaXphdGlv bkBsaXN0cy5saW51eC1mb3VuZGF0aW9uLm9yZwpodHRwczovL2xpc3RzLmxpbnV4Zm91bmRhdGlv bi5vcmcvbWFpbG1hbi9saXN0aW5mby92aXJ0dWFsaXphdGlvbg==