From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Jan Beulich" Subject: Re: further post-Meltdown-bad-aid performance thoughts Date: Mon, 22 Jan 2018 02:25:05 -0700 Message-ID: <5A65BC0102000078001A0ED5@prv-mh.provo.novell.com> References: <5A6210B502000078001A06A5@prv-mh.provo.novell.com> <6134e80b-8fd0-8a7d-61c8-df5892685c63@citrix.com> <5A622C9602000078001A0847@prv-mh.provo.novell.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from all-amaz-eas1.inumbo.com ([34.197.232.57]) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1edYLr-0001jS-K4 for xen-devel@lists.xenproject.org; Mon, 22 Jan 2018 09:25:15 +0000 In-Reply-To: Content-Disposition: inline List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" To: George Dunlap Cc: George Dunlap , Andrew Cooper , xen-devel List-Id: xen-devel@lists.xenproject.org Pj4+IE9uIDE5LjAxLjE4IGF0IDE4OjAwLCA8Z2VvcmdlLmR1bmxhcEBjaXRyaXguY29tPiB3cm90 ZToKPiBPbiAwMS8xOS8yMDE4IDA0OjM2IFBNLCBKYW4gQmV1bGljaCB3cm90ZToKPj4+Pj4gT24g MTkuMDEuMTggYXQgMTY6NDMsIDxnZW9yZ2UuZHVubGFwQGNpdHJpeC5jb20+IHdyb3RlOgo+Pj4g U28gd2hhdCBpZiBpbnN0ZWFkIG9mIHRyeWluZyB0byBjbG9zZSB0aGUgIndpbmRvd3MiLCB3ZSBt YWRlIGl0IHNvIHRoYXQKPj4+IHRoZXJlIHdhcyBub3RoaW5nIHRocm91Z2ggdGhlIHdpbmRvd3Mg dG8gc2VlPyAgSWYgbm8gbWF0dGVyIHdoYXQgdGhlCj4+PiBoeXBlcnZpc29yIHNwZWN1bGF0aXZl bHkgZXhlY3V0ZWQsIG5vdGhpbmcgc2Vuc2l0aXZlIHdhcyB2aXNpYmlsZSBleGNlcHQKPj4+IHdo YXQgYSB2Y3B1IHdhcyBhbHJlYWR5IGFsbG93ZWQgdG8gc2VlLAo+PiAKPj4gSSB0aGluayB5b3Ug ZGlkbid0IGZpbmlzaCB5b3VyIHNlbnRlbmNlIGhlcmUsIGJ1dCBJIGFsc28gdGhpbmsgSQo+PiBj YW4gZ3Vlc3MgdGhlIG1pc3NpbmcgcGFydC4gVGhlcmUncyBhIHByaWNlIHRvIHBheSBmb3Igc3Vj aCBhbgo+PiBhcHByb2FjaCB0aG91Z2ggLSBpdGVyYXRpbmcgb3ZlciBkb21haW5zLCBvciB2Q1BV LXMgb2YgYQo+PiBkb21haW4gKGp1c3QgYXMgYW4gZXhhbXBsZSkgd291bGRuJ3QgYmUgc2ltcGxl IGxpc3Qgd2Fsa3MKPj4gYW55bW9yZS4gVGhlcmUgYXJlIGNlcnRhaW5seSBvdGhlciB0aGluZ3Mu IElPVyAtIHllcywgYW5kCj4+IGFwcHJvYWNoIGxpa2UgdGhpcyBzZWVtcyBwb3NzaWJsZSwgYnV0 IHdpdGggYWxsIHRoZSBsb3N0Cj4+IHBlcmZvcm1hbmNlIEkgdGhpbmsgd2Ugc2hvdWxkbid0IGdv IG92ZXJib2FyZCB3aXRoIGZ1cnRoZXIKPj4gaGlkaW5nLgo+IAo+IFJpZ2h0LCBzbyB0aGUgbmV4 dCBxdWVzdGlvbjogd2hhdCBpbmZvcm1hdGlvbiAqZnJvbSBvdGhlciBndWVzdHMqIGFyZQo+IHNl bnNpdGl2ZT8KPiAKPiBPYnZpb3VzbHkgdGhlIGd1ZXN0IHJlZ2lzdGVycyBhcmUgc2Vuc2l0aXZl LiAgQnV0IGhvdyBtdWNoIG9mIHRoZQo+IGluZm9ybWF0aW9uIGluIHZjcHUgc3RydWN0IHRoYXQg d2UgYWN0dWFsbHkgbmVlZCB0byBoYXZlICJ0byBoYW5kIiBpcwo+IGFjdHVhbGx5IHNlbnNpdGl2 ZSBpbmZvcm1hdGlvbiB0aGF0IHdlIG5lZWQgdG8gaGlkZSBmcm9tIG90aGVyIFZNcz8KCk5vbmUs IEkgdGhpbmsuIEJ1dCB0aGF0J3Mgbm90IHRoZSBtYWluIGFzcGVjdCBoZXJlLiBzdHJ1Y3QgdmNw dQppbnN0YW5jZXMgY29tZSBhbmQgZ28sIHdoaWNoIHdvdWxkIG1lYW4gd2UnZCBoYXZlIHRvCnBl cm1hbmVudGx5IHVwZGF0ZSB3aGF0IGlzIG9yIGlzIG5vdCBiZWluZyBleHBvc2VkIGluIHRoZSBw YWdlCnRhYmxlcyB1c2VkLiBUaGlzLCB3aGlsZSBzb2x2YWJsZSwgaXMgZ29pbmcgdG8gYmUgYSBz aWduaWZpY2FudApidXJkZW4gaW4gdGVybXMgb2Ygc3luY2hyb25pemluZyBwYWdlIHRhYmxlcyAo aWYgd2UgY29udGludWUgdG8KdXNlIHBlci1DUFUgb25lcykgYW5kL29yIFRMQiBzaG9vdGRvd24u IFdoZXJlYXMgaWYgb25seSB0aGUKcnVubmluZyB2Q1BVJ3Mgc3RydWN0dXJlIChhbmQgaXQncyBz dHJ1Y3QgZG9tYWluKSBhcmUgZXhwb3NlZCwKbm8gc3VjaCBzeW5jaHJvbml6YXRpb24gaXMgbmVl ZGVkICh0aGluZ3Mgd291bGQgc2ltcGx5IGJlCnVwZGF0ZWQgZHVyaW5nIGNvbnRleHQgc3dpdGNo KS4KCkphbgoKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f Clhlbi1kZXZlbCBtYWlsaW5nIGxpc3QKWGVuLWRldmVsQGxpc3RzLnhlbnByb2plY3Qub3JnCmh0 dHBzOi8vbGlzdHMueGVucHJvamVjdC5vcmcvbWFpbG1hbi9saXN0aW5mby94ZW4tZGV2ZWw=