From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tiwei Bie Subject: Re: [PATCH net-next v2 3/5] virtio_ring: add packed ring support Date: Thu, 8 Nov 2018 19:51:48 +0800 Message-ID: <20181108115148.GA15701__37822.7790854455$1541677885$gmane$org@debian> References: <20180711022711.7090-1-tiwei.bie@intel.com> <20180711022711.7090-4-tiwei.bie@intel.com> <20181107123933-mutt-send-email-mst@kernel.org> <20181108013759.GA20591@debian> <2d46a41e-bc00-276a-e19a-105c9dffc75a@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Content-Disposition: inline In-Reply-To: <2d46a41e-bc00-276a-e19a-105c9dffc75a@redhat.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: virtualization-bounces@lists.linux-foundation.org Errors-To: virtualization-bounces@lists.linux-foundation.org To: Jason Wang Cc: virtio-dev@lists.oasis-open.org, "Michael S. Tsirkin" , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, virtualization@lists.linux-foundation.org, wexu@redhat.com List-Id: virtualization@lists.linuxfoundation.org T24gVGh1LCBOb3YgMDgsIDIwMTggYXQgMDQ6MTg6MjVQTSArMDgwMCwgSmFzb24gV2FuZyB3cm90 ZToKPiAKPiBPbiAyMDE4LzExLzgg5LiK5Y2IOTozOCwgVGl3ZWkgQmllIHdyb3RlOgo+ID4gPiA+ ICsKPiA+ID4gPiArCWlmICh2cS0+dnEubnVtX2ZyZWUgPCBkZXNjc191c2VkKSB7Cj4gPiA+ID4g KwkJcHJfZGVidWcoIkNhbid0IGFkZCBidWYgbGVuICVpIC0gYXZhaWwgPSAlaVxuIiwKPiA+ID4g PiArCQkJIGRlc2NzX3VzZWQsIHZxLT52cS5udW1fZnJlZSk7Cj4gPiA+ID4gKwkJLyogRklYTUU6 IGZvciBoaXN0b3JpY2FsIHJlYXNvbnMsIHdlIGZvcmNlIGEgbm90aWZ5IGhlcmUgaWYKPiA+ID4g PiArCQkgKiB0aGVyZSBhcmUgb3V0Z29pbmcgcGFydHMgdG8gdGhlIGJ1ZmZlci4gIFByZXN1bWFi bHkgdGhlCj4gPiA+ID4gKwkJICogaG9zdCBzaG91bGQgc2VydmljZSB0aGUgcmluZyBBU0FQLiAq Lwo+ID4gPiBJIGRvbid0IHRoaW5rIHdlIGhhdmUgYSByZWFzb24gdG8gZG8gdGhpcyBmb3IgcGFj a2VkIHJpbmcuCj4gPiA+IE5vIGhpc3RvcmljYWwgYmFnZ2FnZSB0aGVyZSwgcmlnaHQ/Cj4gPiBC YXNlZCBvbiB0aGUgb3JpZ2luYWwgY29tbWl0IGxvZywgaXQgc2VlbXMgdGhhdCB0aGUgbm90aWZ5 IGhlcmUKPiA+IGlzIGp1c3QgYW4gIm9wdGltaXphdGlvbiIuIEJ1dCBJIGRvbid0IHF1aXRlIHVu ZGVyc3RhbmQgd2hhdCBkb2VzCj4gPiB0aGUgInRoZSBoZXVyaXN0aWNzIHdoaWNoIEtWTSB1c2Vz IiByZWZlciB0by4gSWYgaXQncyBzYWZlIHRvIGRyb3AKPiA+IHRoaXMgaW4gcGFja2VkIHJpbmcs IEknZCBsaWtlIHRvIGRvIGl0Lgo+IAo+IAo+IEFjY29yZGluZyB0byB0aGUgY29tbWl0IGxvZywg aXQgc2VlbXMgbGlrZSBhIHdvcmthcm91bmQgb2YgbGd1ZXN0IG5ldHdvcmtpbmcKPiBiYWNrZW5k LgoKRG8geW91IGtub3cgd2h5IHJlbW92aW5nIHRoaXMgbm90aWZ5IGluIFR4IHdpbGwgYnJlYWsg InRoZQpoZXVyaXN0aWNzIHdoaWNoIEtWTSB1c2VzIj8gT3Igd2hhdCBkb2VzICJ0aGUgaGV1cmlz dGljcwp3aGljaCBLVk0gdXNlcyIgcmVmZXIgdG8/CgoKPiBJIGFncmVlIHRvIGRyb3AgaXQsIHdl IHNob3VsZCBub3QgaGF2ZSBzdWNoIGJ1cmRlbi4KPiAKPiBCdXQgd2Ugc2hvdWxkIG5vdGljZSB0 aGF0LCB3aXRoIHRoaXMgcmVtb3ZlZCwgdGhlIGNvbXBhcmUgYmV0d2VlbiBwYWNrZWQgdnMKPiBz cGxpdCBpcyBraW5kIG9mIHVuZmFpci4gQ29uc2lkZXIgdGhlIHJlbW92YWwgb2YgbGd1ZXN0IHN1 cHBvcnQgcmVjZW50bHksCj4gbWF5YmUgd2UgY2FuIGRyb3AgdGhpcyBmb3Igc3BsaXQgcmluZyBh cyB3ZWxsPwo+IAo+IFRoYW5rcwo+IAo+IAo+ID4gCj4gPiBjb21taXQgNDQ2NTNlYWUxNDA3Zjc5 ZGZmNmY1MmZjZjU5NGFlODRjYjE2NWVjNAo+ID4gQXV0aG9yOiBSdXN0eSBSdXNzZWxsPHJ1c3R5 QHJ1c3Rjb3JwLmNvbS5hdT4KPiA+IERhdGU6ICAgRnJpIEp1bCAyNSAxMjowNjowNCAyMDA4IC0w NTAwCj4gPiAKPiA+ICAgICAgdmlydGlvOiBkb24ndCBhbHdheXMgZm9yY2UgYSBub3RpZmljYXRp b24gd2hlbiByaW5nIGlzIGZ1bGwKPiA+ICAgICAgV2UgZm9yY2Ugbm90aWZpY2F0aW9uIHdoZW4g dGhlIHJpbmcgaXMgZnVsbCwgZXZlbiBpZiB0aGUgaG9zdCBoYXMKPiA+ICAgICAgaW5kaWNhdGVk IGl0IGRvZXNuJ3Qgd2FudCB0byBrbm93LiAgVGhpcyBzZWVtZWQgbGlrZSBhIGdvb2QgaWRlYSBh dAo+ID4gICAgICB0aGUgdGltZTogaWYgd2UgZmlsbCB0aGUgdHJhbnNtaXQgcmluZywgd2Ugc2hv dWxkIHRlbGwgdGhlIGhvc3QKPiA+ICAgICAgaW1tZWRpYXRlbHkuCj4gPiAgICAgIFVuZm9ydHVu YXRlbHkgdGhpcyBsb2dpYyBhbHNvIGFwcGxpZXMgdG8gdGhlIHJlY2VpdmluZyByaW5nLCB3aGlj aCBpcwo+ID4gICAgICByZWZpbGxlZCBjb25zdGFudGx5LiAgV2Ugc2hvdWxkIGludHJvZHVjZSBy ZWFsIG5vdGlmaWNhdGlvbiB0aGVzaG9sZHMKPiA+ICAgICAgdG8gcmVwbGFjZSB0aGlzIGxvZ2lj LiAgTWVhbndoaWxlLCByZW1vdmluZyB0aGUgbG9naWMgYWx0b2dldGhlciBicmVha3MKPiA+ICAg ICAgdGhlIGhldXJpc3RpY3Mgd2hpY2ggS1ZNIHVzZXMsIHNvIHdlIHVzZSBhIGhhY2s6IG9ubHkg bm90aWZ5IGlmIHRoZXJlIGFyZQo+ID4gICAgICBvdXRnb2luZyBwYXJ0cyBvZiB0aGUgbmV3IGJ1 ZmZlci4KPiA+ICAgICAgSGVyZSBhcmUgdGhlIG51bWJlciBvZiBleGl0cyB3aXRoIGxndWVzdCdz IGNyYXBweSBuZXR3b3JrIGltcGxlbWVudGF0aW9uOgo+ID4gICAgICBCZWZvcmU6Cj4gPiAgICAg ICAgICAgICAgbmV0d29yayB4bWl0IDc4NTkwNTEgcmVjdiAyMzY0MjAKPiA+ICAgICAgQWZ0ZXI6 Cj4gPiAgICAgICAgICAgICAgbmV0d29yayB4bWl0IDc4NTg2MTAgcmVjdiAxMTgxMzYKPiA+ICAg ICAgU2lnbmVkLW9mZi1ieTogUnVzdHkgUnVzc2VsbDxydXN0eUBydXN0Y29ycC5jb20uYXU+Cj4g PiAKPiA+IGRpZmYgLS1naXQgYS9kcml2ZXJzL3ZpcnRpby92aXJ0aW9fcmluZy5jIGIvZHJpdmVy cy92aXJ0aW8vdmlydGlvX3JpbmcuYwo+ID4gaW5kZXggNzJiZjhiYzA5MDE0Li4yMWQ5YTYyNzY3 YWYgMTAwNjQ0Cj4gPiAtLS0gYS9kcml2ZXJzL3ZpcnRpby92aXJ0aW9fcmluZy5jCj4gPiArKysg Yi9kcml2ZXJzL3ZpcnRpby92aXJ0aW9fcmluZy5jCj4gPiBAQCAtODcsOCArODcsMTEgQEAgc3Rh dGljIGludCB2cmluZ19hZGRfYnVmKHN0cnVjdCB2aXJ0cXVldWUgKl92cSwKPiA+ICAgCWlmICh2 cS0+bnVtX2ZyZWUgPCBvdXQgKyBpbikgewo+ID4gICAJCXByX2RlYnVnKCJDYW4ndCBhZGQgYnVm IGxlbiAlaSAtIGF2YWlsID0gJWlcbiIsCj4gPiAgIAkJCSBvdXQgKyBpbiwgdnEtPm51bV9mcmVl KTsKPiA+IC0JCS8qIFdlIG5vdGlmeSpldmVuIGlmKiAgVlJJTkdfVVNFRF9GX05PX05PVElGWSBp cyBzZXQgaGVyZS4gKi8KPiA+IC0JCXZxLT5ub3RpZnkoJnZxLT52cSk7Cj4gPiArCQkvKiBGSVhN RTogZm9yIGhpc3RvcmljYWwgcmVhc29ucywgd2UgZm9yY2UgYSBub3RpZnkgaGVyZSBpZgo+ID4g KwkJICogdGhlcmUgYXJlIG91dGdvaW5nIHBhcnRzIHRvIHRoZSBidWZmZXIuICBQcmVzdW1hYmx5 IHRoZQo+ID4gKwkJICogaG9zdCBzaG91bGQgc2VydmljZSB0aGUgcmluZyBBU0FQLiAqLwo+ID4g KwkJaWYgKG91dCkKPiA+ICsJCQl2cS0+bm90aWZ5KCZ2cS0+dnEpOwo+ID4gICAJCUVORF9VU0Uo dnEpOwo+ID4gICAJCXJldHVybiAtRU5PU1BDOwo+ID4gICAJfQo+ID4gCj4gPiAKX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KVmlydHVhbGl6YXRpb24gbWFp bGluZyBsaXN0ClZpcnR1YWxpemF0aW9uQGxpc3RzLmxpbnV4LWZvdW5kYXRpb24ub3JnCmh0dHBz Oi8vbGlzdHMubGludXhmb3VuZGF0aW9uLm9yZy9tYWlsbWFuL2xpc3RpbmZvL3ZpcnR1YWxpemF0 aW9u