From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Michael S. Tsirkin" Subject: Re: [PATCH net-next 0/3] vhost: accelerate metadata access through vmap() Date: Tue, 25 Dec 2018 07:52:42 -0500 Message-ID: <20181225075054-mutt-send-email-mst@kernel.org> References: <20181213101022.12475-1-jasowang@redhat.com> <20181213102315-mutt-send-email-mst@kernel.org> <9459e227-a943-8553-732b-d7f5225a0f22@redhat.com> <20181214072334-mutt-send-email-mst@kernel.org> <20181224131040-mutt-send-email-mst@kernel.org> <51fa034d-99ae-3820-c3a4-d9e6f2eefe34@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, kvm@vger.kernel.org, virtualization@lists.linux-foundation.org To: Jason Wang Return-path: Content-Disposition: inline In-Reply-To: <51fa034d-99ae-3820-c3a4-d9e6f2eefe34@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 List-Id: netdev.vger.kernel.org T24gVHVlLCBEZWMgMjUsIDIwMTggYXQgMDY6MDk6MTlQTSArMDgwMCwgSmFzb24gV2FuZyB3cm90 ZToKPiAKPiBPbiAyMDE4LzEyLzI1IOS4iuWNiDI6MTIsIE1pY2hhZWwgUy4gVHNpcmtpbiB3cm90 ZToKPiA+IE9uIE1vbiwgRGVjIDI0LCAyMDE4IGF0IDA0OjMyOjM5UE0gKzA4MDAsIEphc29uIFdh bmcgd3JvdGU6Cj4gPiA+IE9uIDIwMTgvMTIvMTQg5LiL5Y2IODozMywgTWljaGFlbCBTLiBUc2ly a2luIHdyb3RlOgo+ID4gPiA+IE9uIEZyaSwgRGVjIDE0LCAyMDE4IGF0IDExOjQyOjE4QU0gKzA4 MDAsIEphc29uIFdhbmcgd3JvdGU6Cj4gPiA+ID4gPiBPbiAyMDE4LzEyLzEzIOS4i+WNiDExOjI3 LCBNaWNoYWVsIFMuIFRzaXJraW4gd3JvdGU6Cj4gPiA+ID4gPiA+IE9uIFRodSwgRGVjIDEzLCAy MDE4IGF0IDA2OjEwOjE5UE0gKzA4MDAsIEphc29uIFdhbmcgd3JvdGU6Cj4gPiA+ID4gPiA+ID4g SGk6Cj4gPiA+ID4gPiA+ID4gCj4gPiA+ID4gPiA+ID4gVGhpcyBzZXJpZXMgdHJpZXMgdG8gYWNj ZXNzIHZpcnRxdWV1ZSBtZXRhZGF0YSB0aHJvdWdoIGtlcm5lbCB2aXJ0dWFsCj4gPiA+ID4gPiA+ ID4gYWRkcmVzcyBpbnN0ZWFkIG9mIGNvcHlfdXNlcigpIGZyaWVuZHMgc2luY2UgdGhleSBoYWQg dG9vIG11Y2gKPiA+ID4gPiA+ID4gPiBvdmVyaGVhZHMgbGlrZSBjaGVja3MsIHNwZWMgYmFycmll cnMgb3IgZXZlbiBoYXJkd2FyZSBmZWF0dXJlCj4gPiA+ID4gPiA+ID4gdG9nZ2xpbmcuCj4gPiA+ ID4gPiA+IFVzZXJzcGFjZSBhY2Nlc3NlcyB0aHJvdWdoIHJlbWFwcGluZyB0cmlja3MgYW5kIG5l eHQgdGltZSB0aGVyZSdzIGEgbmVlZAo+ID4gPiA+ID4gPiBmb3IgYSBuZXcgYmFycmllciB3ZSBh cmUgbGVmdCB0byBmaWd1cmUgaXQgb3V0IGJ5IG91cnNlbHZlcy4KPiA+ID4gPiA+IEkgZG9uJ3Qg Z2V0IGhlcmUsIGRvIHlvdSBtZWFuIHNwZWMgYmFycmllcnM/Cj4gPiA+ID4gSSBtZWFuIHRoZSBu ZXh0IGJhcnJpZXIgcGVvcGxlIGRlY2lkZSB0byBwdXQgaW50byB1c2Vyc3BhY2UKPiA+ID4gPiBt ZW1vcnkgYWNjZXNzZXMuCj4gPiA+ID4gCj4gPiA+ID4gPiBJdCdzIGNvbXBsZXRlbHkgdW5uZWNl c3NhcnkgZm9yCj4gPiA+ID4gPiB2aG9zdCB3aGljaCBpcyBrZXJuZWwgdGhyZWFkLgo+ID4gPiA+ IEl0J3MgZGVmZW5jZSBpbiBkZXB0aC4gVGFrZSBhIGxvb2sgYXQgdGhlIGNvbW1pdCB0aGF0IGFk ZGVkIHRoZW0uCj4gPiA+ID4gQW5kIHllcyBxdWl0ZSBwb3NzaWJseSBpbiBtb3N0IGNhc2VzIHdl IGFjdHVhbGx5IGhhdmUgYSBzcGVjCj4gPiA+ID4gYmFycmllciBpbiB0aGUgdmFsaWRhdGlvbiBw aGFzZS4gSWYgd2UgZG8gbGV0J3MgdXNlIHRoZQo+ID4gPiA+IHVuc2FmZSB2YXJpYW50cyBzbyB0 aGV5IGNhbiBiZSBmb3VuZC4KPiA+ID4gCj4gPiA+IHVuc2FmZSB2YXJpYW50cyBjYW4gb25seSB3 b3JrIGlmIHlvdSBjYW4gYmF0Y2ggdXNlcnNwYWNlIGFjY2Vzcy4gVGhpcyBpcyBub3QKPiA+ID4g bmVjZXNzYXJpbHkgdGhlIGNhc2UgZm9yIGxpZ2h0IGxvYWQuCj4gPiAKPiA+IERvIHdlIGNhcmUg YSBsb3QgYWJvdXQgdGhlIGxpZ2h0IGxvYWQ/IEhvdyB3b3VsZCB5b3UgYmVuY2htYXJrIGl0Pwo+ ID4gCj4gCj4gSWYgd2UgY2FuIHJlZHVjZSB0aGUgbGF0ZW5jeSB0aGF0J3Mgd2lsbCBiZSBtb3Jl IHRoYW4gd2hhdCB3ZSBleHBlY3QuCj4gCj4gMSBieXRlIFRDUF9SUiBzaG93cyAxLjUlLTIlIGlt cHJvdmVtZW50LgoKSXQncyBuaWNlIGJ1dCBub3QgZ3JlYXQuIEUuZy4gYWRhcHRpdmUgcG9sbGlu ZyB3b3VsZCBiZQphIGJldHRlciBhcHByb2FjaCB0byB3b3JrIG9uIGxhdGVuY3kgaW1oby4KCj4g Cj4gPiA+ID4gPiBBbmQgZXZlbiBpZiB5b3UncmUgcmlnaHQsIHZob3N0IGlzIG5vdCB0aGUKPiA+ ID4gPiA+IG9ubHkgcGxhY2UsIHRoZXJlJ3MgbG90cyBvZiB2bWFwKCkgYmFzZWQgYWNjZXNzaW5n IGluIGtlcm5lbC4KPiA+ID4gPiBGb3Igc3VyZS4gQnV0IGlmIG9uZSBjYW4gZ2V0IGJ5IHdpdGhv dXQgZ2V0IHVzZXIgcGFnZXMsIG9uZQo+ID4gPiA+IHJlYWxseSBzaG91bGQuIFdpdG5lc3MgcmVj ZW50bHkgdW5jb3ZlcmVkIG1lc3Mgd2l0aCBmaWxlCj4gPiA+ID4gYmFja2VkIHN0b3JhZ2UuCj4g PiA+IAo+ID4gPiBXZSBvbmx5IHBpbiBtZXRhZGF0YSBwYWdlcywgSSBkb24ndCBiZWxpZXZlIHRo ZXkgd2lsbCBiZSB1c2VkIGJ5IGFueSBETUEuCj4gPiBJdCBkb2Vzbid0IG1hdHRlciByZWFsbHks IGlmIHlvdSBkaXJ0eSBwYWdlcyBiZWhpbmQgdGhlIE1NIGJhY2sKPiA+IHRoZSBwcm9ibGVtIGlz IHRoZXJlLgo+IAo+IAo+IE9rLCBidXQgdGhlIHVzdWFsIGNhc2UgaXMgYW5vbnltb3VzIHBhZ2Vz LCBkbyB3ZSB1c2UgZmlsZSBiYWNrZWQgcGFnZXMgZm9yCj4gdXNlciBvZiB2aG9zdD8KClNvbWUg cGVvcGxlIHVzZSBmaWxlIGJhY2tlZCBwYWdlcyBmb3Igdm1zLgpOb3RoaW5nIHByZXZlbnRzIHRo ZW0gZnJvbSB1c2luZyB2aG9zdCBhcyB3ZWxsLgoKPiBBbmQgZXZlbiBpZiB3ZSB1c2Ugc29tZXRp bWUsIGFjY29yZGluZyB0byB0aGUgcG9pbnRlciBpdCdzCj4gbm90IHNvbWV0aGluZyB0aGF0IGNh biBmaXgsIFJGQyBoYXMgYmVlbiBwb3N0ZWQgdG8gc29sdmUgdGhpcyBpc3N1ZS4KPiAKPiBUaGFu a3MKCkV4Y2VwdCBpdCdzIG5vdCBicm9rZW4gaWYgd2UgZG9uJ3QgdG8gZ3VwICsgd3JpdGUuClNv IHllYSwgd2FpdCBmb3IgcmZjIHRvIGJlIG1lcmdlZC4KCl9fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fClZpcnR1YWxpemF0aW9uIG1haWxpbmcgbGlzdApWaXJ0 dWFsaXphdGlvbkBsaXN0cy5saW51eC1mb3VuZGF0aW9uLm9yZwpodHRwczovL2xpc3RzLmxpbnV4 Zm91bmRhdGlvbi5vcmcvbWFpbG1hbi9saXN0aW5mby92aXJ0dWFsaXphdGlvbg==